git.oblomov.eu Git - linux-2.6/blob - 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 <cohuck@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/config.h>
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36
  37 #include <linux/slab.h>
  38 #include <linux/kernel.h>
  39 #include <linux/proc_fs.h>
  40 #include <linux/timer.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/qdio.h>
  50
  51 #include "cio.h"
  52 #include "css.h"
  53 #include "device.h"
  54 #include "airq.h"
  55 #include "qdio.h"
  56 #include "ioasm.h"
  57 #include "chsc.h"
  58
  59 #define VERSION_QDIO_C "$Revision: 1.108 $"
  60
  61 /****************** MODULE PARAMETER VARIABLES ********************/
  62 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com>");
  63 MODULE_DESCRIPTION("QDIO base support version 2, " \
  64                    "Copyright 2000 IBM Corporation");
  65 MODULE_LICENSE("GPL");
  66
  67 /******************** HERE WE GO ***********************************/
  68
  69 static const char version[] = "QDIO base support version 2 ("
  70         VERSION_QDIO_C "/" VERSION_QDIO_H  "/" VERSION_CIO_QDIO_H ")";
  71
  72 #ifdef QDIO_PERFORMANCE_STATS
  73 static int proc_perf_file_registration;
  74 static unsigned long i_p_c, i_p_nc, o_p_c, o_p_nc, ii_p_c, ii_p_nc;
  75 static struct qdio_perf_stats perf_stats;
  76 #endif /* QDIO_PERFORMANCE_STATS */
  77
  78 static int hydra_thinints;
  79 static int omit_svs;
  80
  81 static int indicator_used[INDICATORS_PER_CACHELINE];
  82 static __u32 * volatile indicators;
  83 static __u32 volatile spare_indicator;
  84 static atomic_t spare_indicator_usecount;
  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 int register_thinint_result;
 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
 115 static inline __u64
 116 qdio_get_micros(void)
 117 {
 118         return (get_clock() >> 10); /* time>>12 is microseconds */
 119 }
 120
 121 /*
 122  * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve
 123  * the q in any case, so that we'll not be interrupted when we are in
 124  * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost
 125  * ever works (last famous words)
 126  */
 127 static inline int
 128 qdio_reserve_q(struct qdio_q *q)
 129 {
 130         return atomic_add_return(1,&q->use_count) - 1;
 131 }
 132
 133 static inline void
 134 qdio_release_q(struct qdio_q *q)
 135 {
 136         atomic_dec(&q->use_count);
 137 }
 138
 139 static volatile inline void
 140 qdio_set_slsb(volatile char *slsb, unsigned char value)
 141 {
 142         xchg((char*)slsb,value);
 143 }
 144
 145 static inline int
 146 qdio_siga_sync(struct qdio_q *q, unsigned int gpr2,
 147                unsigned int gpr3)
 148 {
 149         int cc;
 150
 151         QDIO_DBF_TEXT4(0,trace,"sigasync");
 152         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 153
 154 #ifdef QDIO_PERFORMANCE_STATS
 155         perf_stats.siga_syncs++;
 156 #endif /* QDIO_PERFORMANCE_STATS */
 157
 158         cc = do_siga_sync(q->irq, gpr2, gpr3);
 159         if (cc)
 160                 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
 161
 162         return cc;
 163 }
 164
 165 static inline int
 166 qdio_siga_sync_q(struct qdio_q *q)
 167 {
 168         if (q->is_input_q)
 169                 return qdio_siga_sync(q, 0, q->mask);
 170         return qdio_siga_sync(q, q->mask, 0);
 171 }
 172
 173 /*
 174  * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns
 175  * an access exception
 176  */
 177 static inline int
 178 qdio_siga_output(struct qdio_q *q)
 179 {
 180         int cc;
 181         __u32 busy_bit;
 182         __u64 start_time=0;
 183
 184 #ifdef QDIO_PERFORMANCE_STATS
 185         perf_stats.siga_outs++;
 186 #endif /* QDIO_PERFORMANCE_STATS */
 187
 188         QDIO_DBF_TEXT4(0,trace,"sigaout");
 189         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 190
 191         for (;;) {
 192                 cc = do_siga_output(q->irq, q->mask, &busy_bit);
 193 //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit);
 194                 if ((cc==2) && (busy_bit) && (q->is_iqdio_q)) {
 195                         if (!start_time)
 196                                 start_time=NOW;
 197                         if ((NOW-start_time)>QDIO_BUSY_BIT_PATIENCE)
 198                                 break;
 199                 } else
 200                         break;
 201         }
 202
 203         if ((cc==2) && (busy_bit))
 204                 cc |= QDIO_SIGA_ERROR_B_BIT_SET;
 205
 206         if (cc)
 207                 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
 208
 209         return cc;
 210 }
 211
 212 static inline int
 213 qdio_siga_input(struct qdio_q *q)
 214 {
 215         int cc;
 216
 217         QDIO_DBF_TEXT4(0,trace,"sigain");
 218         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 219
 220 #ifdef QDIO_PERFORMANCE_STATS
 221         perf_stats.siga_ins++;
 222 #endif /* QDIO_PERFORMANCE_STATS */
 223
 224         cc = do_siga_input(q->irq, q->mask);
 225
 226         if (cc)
 227                 QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*));
 228
 229         return cc;
 230 }
 231
 232 /* locked by the locks in qdio_activate and qdio_cleanup */
 233 static __u32 volatile *
 234 qdio_get_indicator(void)
 235 {
 236         int i;
 237
 238         for (i=1;i<INDICATORS_PER_CACHELINE;i++)
 239                 if (!indicator_used[i]) {
 240                         indicator_used[i]=1;
 241                         return indicators+i;
 242                 }
 243         atomic_inc(&spare_indicator_usecount);
 244         return (__u32 * volatile) &spare_indicator;
 245 }
 246
 247 /* locked by the locks in qdio_activate and qdio_cleanup */
 248 static void
 249 qdio_put_indicator(__u32 *addr)
 250 {
 251         int i;
 252
 253         if ( (addr) && (addr!=&spare_indicator) ) {
 254                 i=addr-indicators;
 255                 indicator_used[i]=0;
 256         }
 257         if (addr == &spare_indicator)
 258                 atomic_dec(&spare_indicator_usecount);
 259 }
 260
 261 static inline volatile void
 262 tiqdio_clear_summary_bit(__u32 *location)
 263 {
 264         QDIO_DBF_TEXT5(0,trace,"clrsummb");
 265         QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
 266
 267         xchg(location,0);
 268 }
 269
 270 static inline volatile void
 271 tiqdio_set_summary_bit(__u32 *location)
 272 {
 273         QDIO_DBF_TEXT5(0,trace,"setsummb");
 274         QDIO_DBF_HEX5(0,trace,&location,sizeof(void*));
 275
 276         xchg(location,-1);
 277 }
 278
 279 static inline void
 280 tiqdio_sched_tl(void)
 281 {
 282         tasklet_hi_schedule(&tiqdio_tasklet);
 283 }
 284
 285 static inline void
 286 qdio_mark_tiq(struct qdio_q *q)
 287 {
 288         unsigned long flags;
 289
 290         QDIO_DBF_TEXT4(0,trace,"mark iq");
 291         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 292
 293         spin_lock_irqsave(&ttiq_list_lock,flags);
 294         if (unlikely(atomic_read(&q->is_in_shutdown)))
 295                 goto out_unlock;
 296
 297         if (!q->is_input_q)
 298                 goto out_unlock;
 299
 300         if ((q->list_prev) || (q->list_next))
 301                 goto out_unlock;
 302
 303         if (!tiq_list) {
 304                 tiq_list=q;
 305                 q->list_prev=q;
 306                 q->list_next=q;
 307         } else {
 308                 q->list_next=tiq_list;
 309                 q->list_prev=tiq_list->list_prev;
 310                 tiq_list->list_prev->list_next=q;
 311                 tiq_list->list_prev=q;
 312         }
 313         spin_unlock_irqrestore(&ttiq_list_lock,flags);
 314
 315         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
 316         tiqdio_sched_tl();
 317         return;
 318 out_unlock:
 319         spin_unlock_irqrestore(&ttiq_list_lock,flags);
 320         return;
 321 }
 322
 323 static inline void
 324 qdio_mark_q(struct qdio_q *q)
 325 {
 326         QDIO_DBF_TEXT4(0,trace,"mark q");
 327         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 328
 329         if (unlikely(atomic_read(&q->is_in_shutdown)))
 330                 return;
 331
 332         tasklet_schedule(&q->tasklet);
 333 }
 334
 335 static inline int
 336 qdio_stop_polling(struct qdio_q *q)
 337 {
 338 #ifdef QDIO_USE_PROCESSING_STATE
 339         int gsf;
 340
 341         if (!atomic_swap(&q->polling,0))
 342                 return 1;
 343
 344         QDIO_DBF_TEXT4(0,trace,"stoppoll");
 345         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 346
 347         /* show the card that we are not polling anymore */
 348         if (!q->is_input_q)
 349                 return 1;
 350
 351         gsf=GET_SAVED_FRONTIER(q);
 352         set_slsb(&q->slsb.acc.val[(gsf+QDIO_MAX_BUFFERS_PER_Q-1)&
 353                                   (QDIO_MAX_BUFFERS_PER_Q-1)],
 354                  SLSB_P_INPUT_NOT_INIT);
 355         /*
 356          * we don't issue this SYNC_MEMORY, as we trust Rick T and
 357          * moreover will not use the PROCESSING state under VM, so
 358          * q->polling was 0 anyway
 359          */
 360         /*SYNC_MEMORY;*/
 361         if (q->slsb.acc.val[gsf]!=SLSB_P_INPUT_PRIMED)
 362                 return 1;
 363         /*
 364          * set our summary bit again, as otherwise there is a
 365          * small window we can miss between resetting it and
 366          * checking for PRIMED state
 367          */
 368         if (q->is_thinint_q)
 369                 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
 370         return 0;
 371
 372 #else /* QDIO_USE_PROCESSING_STATE */
 373         return 1;
 374 #endif /* QDIO_USE_PROCESSING_STATE */
 375 }
 376
 377 /*
 378  * see the comment in do_QDIO and before qdio_reserve_q about the
 379  * sophisticated locking outside of unmark_q, so that we don't need to
 380  * disable the interrupts :-)
 381 */
 382 static inline void
 383 qdio_unmark_q(struct qdio_q *q)
 384 {
 385         unsigned long flags;
 386
 387         QDIO_DBF_TEXT4(0,trace,"unmark q");
 388         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 389
 390         if ((!q->list_prev)||(!q->list_next))
 391                 return;
 392
 393         if ((q->is_thinint_q)&&(q->is_input_q)) {
 394                 /* iQDIO */
 395                 spin_lock_irqsave(&ttiq_list_lock,flags);
 396                 /* in case cleanup has done this already and simultanously
 397                  * qdio_unmark_q is called from the interrupt handler, we've
 398                  * got to check this in this specific case again */
 399                 if ((!q->list_prev)||(!q->list_next))
 400                         goto out;
 401                 if (q->list_next==q) {
 402                         /* q was the only interesting q */
 403                         tiq_list=NULL;
 404                         q->list_next=NULL;
 405                         q->list_prev=NULL;
 406                 } else {
 407                         q->list_next->list_prev=q->list_prev;
 408                         q->list_prev->list_next=q->list_next;
 409                         tiq_list=q->list_next;
 410                         q->list_next=NULL;
 411                         q->list_prev=NULL;
 412                 }
 413 out:
 414                 spin_unlock_irqrestore(&ttiq_list_lock,flags);
 415         }
 416 }
 417
 418 static inline unsigned long
 419 tiqdio_clear_global_summary(void)
 420 {
 421         unsigned long time;
 422
 423         QDIO_DBF_TEXT5(0,trace,"clrglobl");
 424
 425         time = do_clear_global_summary();
 426
 427         QDIO_DBF_HEX5(0,trace,&time,sizeof(unsigned long));
 428
 429         return time;
 430 }
 431
 432
 433 /************************* OUTBOUND ROUTINES *******************************/
 434
 435 static inline int
 436 qdio_get_outbound_buffer_frontier(struct qdio_q *q)
 437 {
 438         int f,f_mod_no;
 439         volatile char *slsb;
 440         int first_not_to_check;
 441         char dbf_text[15];
 442
 443         QDIO_DBF_TEXT4(0,trace,"getobfro");
 444         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 445
 446         slsb=&q->slsb.acc.val[0];
 447         f_mod_no=f=q->first_to_check;
 448         /*
 449          * f points to already processed elements, so f+no_used is correct...
 450          * ... but: we don't check 128 buffers, as otherwise
 451          * qdio_has_outbound_q_moved would return 0
 452          */
 453         first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
 454                                       (QDIO_MAX_BUFFERS_PER_Q-1));
 455
 456         if ((!q->is_iqdio_q)&&(!q->hydra_gives_outbound_pcis))
 457                 SYNC_MEMORY;
 458
 459 check_next:
 460         if (f==first_not_to_check)
 461                 goto out;
 462
 463         switch(slsb[f_mod_no]) {
 464
 465         /* the adapter has not fetched the output yet */
 466         case SLSB_CU_OUTPUT_PRIMED:
 467                 QDIO_DBF_TEXT5(0,trace,"outpprim");
 468                 break;
 469
 470         /* the adapter got it */
 471         case SLSB_P_OUTPUT_EMPTY:
 472                 atomic_dec(&q->number_of_buffers_used);
 473                 f++;
 474                 f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
 475                 QDIO_DBF_TEXT5(0,trace,"outpempt");
 476                 goto check_next;
 477
 478         case SLSB_P_OUTPUT_ERROR:
 479                 QDIO_DBF_TEXT3(0,trace,"outperr");
 480                 sprintf(dbf_text,"%x-%x-%x",f_mod_no,
 481                         q->sbal[f_mod_no]->element[14].sbalf.value,
 482                         q->sbal[f_mod_no]->element[15].sbalf.value);
 483                 QDIO_DBF_TEXT3(1,trace,dbf_text);
 484                 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
 485
 486                 /* kind of process the buffer */
 487                 set_slsb(&q->slsb.acc.val[f_mod_no], SLSB_P_OUTPUT_NOT_INIT);
 488
 489                 /*
 490                  * we increment the frontier, as this buffer
 491                  * was processed obviously
 492                  */
 493                 atomic_dec(&q->number_of_buffers_used);
 494                 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
 495
 496                 if (q->qdio_error)
 497                         q->error_status_flags|=
 498                                 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
 499                 q->qdio_error=SLSB_P_OUTPUT_ERROR;
 500                 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
 501
 502                 break;
 503
 504         /* no new buffers */
 505         default:
 506                 QDIO_DBF_TEXT5(0,trace,"outpni");
 507         }
 508 out:
 509         return (q->first_to_check=f_mod_no);
 510 }
 511
 512 /* all buffers are processed */
 513 static inline int
 514 qdio_is_outbound_q_done(struct qdio_q *q)
 515 {
 516         int no_used;
 517 #ifdef CONFIG_QDIO_DEBUG
 518         char dbf_text[15];
 519 #endif
 520
 521         no_used=atomic_read(&q->number_of_buffers_used);
 522
 523 #ifdef CONFIG_QDIO_DEBUG
 524         if (no_used) {
 525                 sprintf(dbf_text,"oqisnt%02x",no_used);
 526                 QDIO_DBF_TEXT4(0,trace,dbf_text);
 527         } else {
 528                 QDIO_DBF_TEXT4(0,trace,"oqisdone");
 529         }
 530         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 531 #endif /* CONFIG_QDIO_DEBUG */
 532         return (no_used==0);
 533 }
 534
 535 static inline int
 536 qdio_has_outbound_q_moved(struct qdio_q *q)
 537 {
 538         int i;
 539
 540         i=qdio_get_outbound_buffer_frontier(q);
 541
 542         if ( (i!=GET_SAVED_FRONTIER(q)) ||
 543              (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
 544                 SAVE_FRONTIER(q,i);
 545                 QDIO_DBF_TEXT4(0,trace,"oqhasmvd");
 546                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 547                 return 1;
 548         } else {
 549                 QDIO_DBF_TEXT4(0,trace,"oqhsntmv");
 550                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 551                 return 0;
 552         }
 553 }
 554
 555 static inline void
 556 qdio_kick_outbound_q(struct qdio_q *q)
 557 {
 558         int result;
 559 #ifdef CONFIG_QDIO_DEBUG
 560         char dbf_text[15];
 561
 562         QDIO_DBF_TEXT4(0,trace,"kickoutq");
 563         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 564 #endif /* CONFIG_QDIO_DEBUG */
 565
 566         if (!q->siga_out)
 567                 return;
 568
 569         /* here's the story with cc=2 and busy bit set (thanks, Rick):
 570          * VM's CP could present us cc=2 and busy bit set on SIGA-write
 571          * during reconfiguration of their Guest LAN (only in HIPERS mode,
 572          * QDIO mode is asynchronous -- cc=2 and busy bit there will take
 573          * the queues down immediately; and not being under VM we have a
 574          * problem on cc=2 and busy bit set right away).
 575          *
 576          * Therefore qdio_siga_output will try for a short time constantly,
 577          * if such a condition occurs. If it doesn't change, it will
 578          * increase the busy_siga_counter and save the timestamp, and
 579          * schedule the queue for later processing (via mark_q, using the
 580          * queue tasklet). __qdio_outbound_processing will check out the
 581          * counter. If non-zero, it will call qdio_kick_outbound_q as often
 582          * as the value of the counter. This will attempt further SIGA
 583          * instructions. For each successful SIGA, the counter is
 584          * decreased, for failing SIGAs the counter remains the same, after
 585          * all.
 586          * After some time of no movement, qdio_kick_outbound_q will
 587          * finally fail and reflect corresponding error codes to call
 588          * the upper layer module and have it take the queues down.
 589          *
 590          * Note that this is a change from the original HiperSockets design
 591          * (saying cc=2 and busy bit means take the queues down), but in
 592          * these days Guest LAN didn't exist... excessive cc=2 with busy bit
 593          * conditions will still take the queues down, but the threshold is
 594          * higher due to the Guest LAN environment.
 595          */
 596
 597
 598         result=qdio_siga_output(q);
 599
 600                 switch (result) {
 601                 case 0:
 602                         /* went smooth this time, reset timestamp */
 603 #ifdef CONFIG_QDIO_DEBUG
 604                         QDIO_DBF_TEXT3(0,trace,"cc2reslv");
 605                         sprintf(dbf_text,"%4x%2x%2x",q->irq,q->q_no,
 606                                 atomic_read(&q->busy_siga_counter));
 607                         QDIO_DBF_TEXT3(0,trace,dbf_text);
 608 #endif /* CONFIG_QDIO_DEBUG */
 609                         q->timing.busy_start=0;
 610                         break;
 611                 case (2|QDIO_SIGA_ERROR_B_BIT_SET):
 612                         /* cc=2 and busy bit: */
 613                         atomic_inc(&q->busy_siga_counter);
 614
 615                         /* if the last siga was successful, save
 616                          * timestamp here */
 617                         if (!q->timing.busy_start)
 618                                 q->timing.busy_start=NOW;
 619
 620                         /* if we're in time, don't touch error_status_flags
 621                          * and siga_error */
 622                         if (NOW-q->timing.busy_start<QDIO_BUSY_BIT_GIVE_UP) {
 623                                 qdio_mark_q(q);
 624                                 break;
 625                         }
 626                         QDIO_DBF_TEXT2(0,trace,"cc2REPRT");
 627 #ifdef CONFIG_QDIO_DEBUG
 628                         sprintf(dbf_text,"%4x%2x%2x",q->irq,q->q_no,
 629                                 atomic_read(&q->busy_siga_counter));
 630                         QDIO_DBF_TEXT3(0,trace,dbf_text);
 631 #endif /* CONFIG_QDIO_DEBUG */
 632                         /* else fallthrough and report error */
 633                 default:
 634                         /* for plain cc=1, 2 or 3: */
 635                         if (q->siga_error)
 636                                 q->error_status_flags|=
 637                                         QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
 638                         q->error_status_flags|=
 639                                 QDIO_STATUS_LOOK_FOR_ERROR;
 640                         q->siga_error=result;
 641                 }
 642 }
 643
 644 static inline void
 645 qdio_kick_outbound_handler(struct qdio_q *q)
 646 {
 647         int start, end, real_end, count;
 648 #ifdef CONFIG_QDIO_DEBUG
 649         char dbf_text[15];
 650 #endif
 651
 652         start = q->first_element_to_kick;
 653         /* last_move_ftc was just updated */
 654         real_end = GET_SAVED_FRONTIER(q);
 655         end = (real_end+QDIO_MAX_BUFFERS_PER_Q-1)&
 656                 (QDIO_MAX_BUFFERS_PER_Q-1);
 657         count = (end+QDIO_MAX_BUFFERS_PER_Q+1-start)&
 658                 (QDIO_MAX_BUFFERS_PER_Q-1);
 659
 660 #ifdef CONFIG_QDIO_DEBUG
 661         QDIO_DBF_TEXT4(0,trace,"kickouth");
 662         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 663
 664         sprintf(dbf_text,"s=%2xc=%2x",start,count);
 665         QDIO_DBF_TEXT4(0,trace,dbf_text);
 666 #endif /* CONFIG_QDIO_DEBUG */
 667
 668         if (q->state==QDIO_IRQ_STATE_ACTIVE)
 669                 q->handler(q->cdev,QDIO_STATUS_OUTBOUND_INT|
 670                            q->error_status_flags,
 671                            q->qdio_error,q->siga_error,q->q_no,start,count,
 672                            q->int_parm);
 673
 674         /* for the next time: */
 675         q->first_element_to_kick=real_end;
 676         q->qdio_error=0;
 677         q->siga_error=0;
 678         q->error_status_flags=0;
 679 }
 680
 681 static inline void
 682 __qdio_outbound_processing(struct qdio_q *q)
 683 {
 684         int siga_attempts;
 685
 686         QDIO_DBF_TEXT4(0,trace,"qoutproc");
 687         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 688
 689         if (unlikely(qdio_reserve_q(q))) {
 690                 qdio_release_q(q);
 691 #ifdef QDIO_PERFORMANCE_STATS
 692                 o_p_c++;
 693 #endif /* QDIO_PERFORMANCE_STATS */
 694                 /* as we're sissies, we'll check next time */
 695                 if (likely(!atomic_read(&q->is_in_shutdown))) {
 696                         qdio_mark_q(q);
 697                         QDIO_DBF_TEXT4(0,trace,"busy,agn");
 698                 }
 699                 return;
 700         }
 701 #ifdef QDIO_PERFORMANCE_STATS
 702         o_p_nc++;
 703         perf_stats.tl_runs++;
 704 #endif /* QDIO_PERFORMANCE_STATS */
 705
 706         /* see comment in qdio_kick_outbound_q */
 707         siga_attempts=atomic_read(&q->busy_siga_counter);
 708         while (siga_attempts) {
 709                 atomic_dec(&q->busy_siga_counter);
 710                 qdio_kick_outbound_q(q);
 711                 siga_attempts--;
 712         }
 713
 714         if (qdio_has_outbound_q_moved(q))
 715                 qdio_kick_outbound_handler(q);
 716
 717         if (q->is_iqdio_q) {
 718                 /*
 719                  * for asynchronous queues, we better check, if the fill
 720                  * level is too high. for synchronous queues, the fill
 721                  * level will never be that high.
 722                  */
 723                 if (atomic_read(&q->number_of_buffers_used)>
 724                     IQDIO_FILL_LEVEL_TO_POLL)
 725                         qdio_mark_q(q);
 726
 727         } else if (!q->hydra_gives_outbound_pcis)
 728                 if (!qdio_is_outbound_q_done(q))
 729                         qdio_mark_q(q);
 730
 731         qdio_release_q(q);
 732 }
 733
 734 static void
 735 qdio_outbound_processing(struct qdio_q *q)
 736 {
 737         __qdio_outbound_processing(q);
 738 }
 739
 740 /************************* INBOUND ROUTINES *******************************/
 741
 742
 743 static inline int
 744 qdio_get_inbound_buffer_frontier(struct qdio_q *q)
 745 {
 746         int f,f_mod_no;
 747         volatile char *slsb;
 748         int first_not_to_check;
 749 #ifdef CONFIG_QDIO_DEBUG
 750         char dbf_text[15];
 751 #endif /* CONFIG_QDIO_DEBUG */
 752 #ifdef QDIO_USE_PROCESSING_STATE
 753         int last_position=-1;
 754 #endif /* QDIO_USE_PROCESSING_STATE */
 755
 756         QDIO_DBF_TEXT4(0,trace,"getibfro");
 757         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 758
 759         slsb=&q->slsb.acc.val[0];
 760         f_mod_no=f=q->first_to_check;
 761         /*
 762          * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved
 763          * would return 0
 764          */
 765         first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
 766                                       (QDIO_MAX_BUFFERS_PER_Q-1));
 767
 768         /*
 769          * we don't use this one, as a PCI or we after a thin interrupt
 770          * will sync the queues
 771          */
 772         /* SYNC_MEMORY;*/
 773
 774 check_next:
 775         f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1);
 776         if (f==first_not_to_check)
 777                 goto out;
 778         switch (slsb[f_mod_no]) {
 779
 780         /* CU_EMPTY means frontier is reached */
 781         case SLSB_CU_INPUT_EMPTY:
 782                 QDIO_DBF_TEXT5(0,trace,"inptempt");
 783                 break;
 784
 785         /* P_PRIMED means set slsb to P_PROCESSING and move on */
 786         case SLSB_P_INPUT_PRIMED:
 787                 QDIO_DBF_TEXT5(0,trace,"inptprim");
 788
 789 #ifdef QDIO_USE_PROCESSING_STATE
 790                 /*
 791                  * as soon as running under VM, polling the input queues will
 792                  * kill VM in terms of CP overhead
 793                  */
 794                 if (q->siga_sync) {
 795                         set_slsb(&slsb[f_mod_no],SLSB_P_INPUT_NOT_INIT);
 796                 } else {
 797                         /* set the previous buffer to NOT_INIT. The current
 798                          * buffer will be set to PROCESSING at the end of
 799                          * this function to avoid further interrupts. */
 800                         if (last_position>=0)
 801                                 set_slsb(&slsb[last_position],
 802                                          SLSB_P_INPUT_NOT_INIT);
 803                         atomic_set(&q->polling,1);
 804                         last_position=f_mod_no;
 805                 }
 806 #else /* QDIO_USE_PROCESSING_STATE */
 807                 set_slsb(&slsb[f_mod_no],SLSB_P_INPUT_NOT_INIT);
 808 #endif /* QDIO_USE_PROCESSING_STATE */
 809                 /*
 810                  * not needed, as the inbound queue will be synced on the next
 811                  * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s
 812                  */
 813                 /*SYNC_MEMORY;*/
 814                 f++;
 815                 atomic_dec(&q->number_of_buffers_used);
 816                 goto check_next;
 817
 818         case SLSB_P_INPUT_NOT_INIT:
 819         case SLSB_P_INPUT_PROCESSING:
 820                 QDIO_DBF_TEXT5(0,trace,"inpnipro");
 821                 break;
 822
 823         /* P_ERROR means frontier is reached, break and report error */
 824         case SLSB_P_INPUT_ERROR:
 825 #ifdef CONFIG_QDIO_DEBUG
 826                 sprintf(dbf_text,"inperr%2x",f_mod_no);
 827                 QDIO_DBF_TEXT3(1,trace,dbf_text);
 828 #endif /* CONFIG_QDIO_DEBUG */
 829                 QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256);
 830
 831                 /* kind of process the buffer */
 832                 set_slsb(&slsb[f_mod_no],SLSB_P_INPUT_NOT_INIT);
 833
 834                 if (q->qdio_error)
 835                         q->error_status_flags|=
 836                                 QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR;
 837                 q->qdio_error=SLSB_P_INPUT_ERROR;
 838                 q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
 839
 840                 /* we increment the frontier, as this buffer
 841                  * was processed obviously */
 842                 f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
 843                 atomic_dec(&q->number_of_buffers_used);
 844
 845 #ifdef QDIO_USE_PROCESSING_STATE
 846                 last_position=-1;
 847 #endif /* QDIO_USE_PROCESSING_STATE */
 848
 849                 break;
 850
 851         /* everything else means frontier not changed (HALTED or so) */
 852         default:
 853                 break;
 854         }
 855 out:
 856         q->first_to_check=f_mod_no;
 857
 858 #ifdef QDIO_USE_PROCESSING_STATE
 859         if (last_position>=0)
 860                 set_slsb(&slsb[last_position],SLSB_P_INPUT_PROCESSING);
 861 #endif /* QDIO_USE_PROCESSING_STATE */
 862
 863         QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int));
 864
 865         return q->first_to_check;
 866 }
 867
 868 static inline int
 869 qdio_has_inbound_q_moved(struct qdio_q *q)
 870 {
 871         int i;
 872
 873 #ifdef QDIO_PERFORMANCE_STATS
 874         static int old_pcis=0;
 875         static int old_thinints=0;
 876
 877         if ((old_pcis==perf_stats.pcis)&&(old_thinints==perf_stats.thinints))
 878                 perf_stats.start_time_inbound=NOW;
 879         else
 880                 old_pcis=perf_stats.pcis;
 881 #endif /* QDIO_PERFORMANCE_STATS */
 882
 883         i=qdio_get_inbound_buffer_frontier(q);
 884         if ( (i!=GET_SAVED_FRONTIER(q)) ||
 885              (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) {
 886                 SAVE_FRONTIER(q,i);
 887                 if ((!q->siga_sync)&&(!q->hydra_gives_outbound_pcis))
 888                         SAVE_TIMESTAMP(q);
 889
 890                 QDIO_DBF_TEXT4(0,trace,"inhasmvd");
 891                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 892                 return 1;
 893         } else {
 894                 QDIO_DBF_TEXT4(0,trace,"inhsntmv");
 895                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 896                 return 0;
 897         }
 898 }
 899
 900 /* means, no more buffers to be filled */
 901 static inline int
 902 tiqdio_is_inbound_q_done(struct qdio_q *q)
 903 {
 904         int no_used;
 905 #ifdef CONFIG_QDIO_DEBUG
 906         char dbf_text[15];
 907 #endif
 908
 909         no_used=atomic_read(&q->number_of_buffers_used);
 910
 911         /* propagate the change from 82 to 80 through VM */
 912         SYNC_MEMORY;
 913
 914 #ifdef CONFIG_QDIO_DEBUG
 915         if (no_used) {
 916                 sprintf(dbf_text,"iqisnt%02x",no_used);
 917                 QDIO_DBF_TEXT4(0,trace,dbf_text);
 918         } else {
 919                 QDIO_DBF_TEXT4(0,trace,"iniqisdo");
 920         }
 921         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 922 #endif /* CONFIG_QDIO_DEBUG */
 923
 924         if (!no_used)
 925                 return 1;
 926
 927         if (!q->siga_sync)
 928                 /* we'll check for more primed buffers in qeth_stop_polling */
 929                 return 0;
 930
 931         if (q->slsb.acc.val[q->first_to_check]!=SLSB_P_INPUT_PRIMED)
 932                 /*
 933                  * nothing more to do, if next buffer is not PRIMED.
 934                  * note that we did a SYNC_MEMORY before, that there
 935                  * has been a sychnronization.
 936                  * we will return 0 below, as there is nothing to do
 937                  * (stop_polling not necessary, as we have not been
 938                  * using the PROCESSING state
 939                  */
 940                 return 0;
 941
 942         /*
 943          * ok, the next input buffer is primed. that means, that device state
 944          * change indicator and adapter local summary are set, so we will find
 945          * it next time.
 946          * we will return 0 below, as there is nothing to do, except scheduling
 947          * ourselves for the next time.
 948          */
 949         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
 950         tiqdio_sched_tl();
 951         return 0;
 952 }
 953
 954 static inline int
 955 qdio_is_inbound_q_done(struct qdio_q *q)
 956 {
 957         int no_used;
 958 #ifdef CONFIG_QDIO_DEBUG
 959         char dbf_text[15];
 960 #endif
 961
 962         no_used=atomic_read(&q->number_of_buffers_used);
 963
 964         /*
 965          * we need that one for synchronization with the adapter, as it
 966          * does a kind of PCI avoidance
 967          */
 968         SYNC_MEMORY;
 969
 970         if (!no_used) {
 971                 QDIO_DBF_TEXT4(0,trace,"inqisdnA");
 972                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 973                 QDIO_DBF_TEXT4(0,trace,dbf_text);
 974                 return 1;
 975         }
 976
 977         if (q->slsb.acc.val[q->first_to_check]==SLSB_P_INPUT_PRIMED) {
 978                 /* we got something to do */
 979                 QDIO_DBF_TEXT4(0,trace,"inqisntA");
 980                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 981                 return 0;
 982         }
 983
 984         /* on VM, we don't poll, so the q is always done here */
 985         if (q->siga_sync)
 986                 return 1;
 987         if (q->hydra_gives_outbound_pcis)
 988                 return 1;
 989
 990         /*
 991          * at this point we know, that inbound first_to_check
 992          * has (probably) not moved (see qdio_inbound_processing)
 993          */
 994         if (NOW>GET_SAVED_TIMESTAMP(q)+q->timing.threshold) {
 995 #ifdef CONFIG_QDIO_DEBUG
 996                 QDIO_DBF_TEXT4(0,trace,"inqisdon");
 997                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
 998                 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
 999                 QDIO_DBF_TEXT4(0,trace,dbf_text);
1000 #endif /* CONFIG_QDIO_DEBUG */
1001                 return 1;
1002         } else {
1003 #ifdef CONFIG_QDIO_DEBUG
1004                 QDIO_DBF_TEXT4(0,trace,"inqisntd");
1005                 QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1006                 sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used);
1007                 QDIO_DBF_TEXT4(0,trace,dbf_text);
1008 #endif /* CONFIG_QDIO_DEBUG */
1009                 return 0;
1010         }
1011 }
1012
1013 static inline void
1014 qdio_kick_inbound_handler(struct qdio_q *q)
1015 {
1016         int count, start, end, real_end, i;
1017 #ifdef CONFIG_QDIO_DEBUG
1018         char dbf_text[15];
1019 #endif
1020
1021         QDIO_DBF_TEXT4(0,trace,"kickinh");
1022         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1023
1024         start=q->first_element_to_kick;
1025         real_end=q->first_to_check;
1026         end=(real_end+QDIO_MAX_BUFFERS_PER_Q-1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1027
1028         i=start;
1029         count=0;
1030         while (1) {
1031                 count++;
1032                 if (i==end)
1033                         break;
1034                 i=(i+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
1035         }
1036
1037 #ifdef CONFIG_QDIO_DEBUG
1038         sprintf(dbf_text,"s=%2xc=%2x",start,count);
1039         QDIO_DBF_TEXT4(0,trace,dbf_text);
1040 #endif /* CONFIG_QDIO_DEBUG */
1041
1042         if (likely(q->state==QDIO_IRQ_STATE_ACTIVE))
1043                 q->handler(q->cdev,
1044                            QDIO_STATUS_INBOUND_INT|q->error_status_flags,
1045                            q->qdio_error,q->siga_error,q->q_no,start,count,
1046                            q->int_parm);
1047
1048         /* for the next time: */
1049         q->first_element_to_kick=real_end;
1050         q->qdio_error=0;
1051         q->siga_error=0;
1052         q->error_status_flags=0;
1053
1054 #ifdef QDIO_PERFORMANCE_STATS
1055         perf_stats.inbound_time+=NOW-perf_stats.start_time_inbound;
1056         perf_stats.inbound_cnt++;
1057 #endif /* QDIO_PERFORMANCE_STATS */
1058 }
1059
1060 static inline void
1061 __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set)
1062 {
1063         struct qdio_irq *irq_ptr;
1064         struct qdio_q *oq;
1065         int i;
1066
1067         QDIO_DBF_TEXT4(0,trace,"iqinproc");
1068         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1069
1070         /*
1071          * we first want to reserve the q, so that we know, that we don't
1072          * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might
1073          * be set
1074          */
1075         if (unlikely(qdio_reserve_q(q))) {
1076                 qdio_release_q(q);
1077 #ifdef QDIO_PERFORMANCE_STATS
1078                 ii_p_c++;
1079 #endif /* QDIO_PERFORMANCE_STATS */
1080                 /*
1081                  * as we might just be about to stop polling, we make
1082                  * sure that we check again at least once more
1083                  */
1084                 tiqdio_sched_tl();
1085                 return;
1086         }
1087 #ifdef QDIO_PERFORMANCE_STATS
1088         ii_p_nc++;
1089 #endif /* QDIO_PERFORMANCE_STATS */
1090         if (unlikely(atomic_read(&q->is_in_shutdown))) {
1091                 qdio_unmark_q(q);
1092                 goto out;
1093         }
1094
1095         /*
1096          * we reset spare_ind_was_set, when the queue does not use the
1097          * spare indicator
1098          */
1099         if (spare_ind_was_set)
1100                 spare_ind_was_set = (q->dev_st_chg_ind == &spare_indicator);
1101
1102         if (!(*(q->dev_st_chg_ind)) && !spare_ind_was_set)
1103                 goto out;
1104         /*
1105          * q->dev_st_chg_ind is the indicator, be it shared or not.
1106          * only clear it, if indicator is non-shared
1107          */
1108         if (!spare_ind_was_set)
1109                 tiqdio_clear_summary_bit((__u32*)q->dev_st_chg_ind);
1110
1111         if (q->hydra_gives_outbound_pcis) {
1112                 if (!q->siga_sync_done_on_thinints) {
1113                         SYNC_MEMORY_ALL;
1114                 } else if ((!q->siga_sync_done_on_outb_tis)&&
1115                          (q->hydra_gives_outbound_pcis)) {
1116                         SYNC_MEMORY_ALL_OUTB;
1117                 }
1118         } else {
1119                 SYNC_MEMORY;
1120         }
1121         /*
1122          * maybe we have to do work on our outbound queues... at least
1123          * we have to check the outbound-int-capable thinint-capable
1124          * queues
1125          */
1126         if (q->hydra_gives_outbound_pcis) {
1127                 irq_ptr = (struct qdio_irq*)q->irq_ptr;
1128                 for (i=0;i<irq_ptr->no_output_qs;i++) {
1129                         oq = irq_ptr->output_qs[i];
1130 #ifdef QDIO_PERFORMANCE_STATS
1131                         perf_stats.tl_runs--;
1132 #endif /* QDIO_PERFORMANCE_STATS */
1133                         if (!qdio_is_outbound_q_done(oq))
1134                                 __qdio_outbound_processing(oq);
1135                 }
1136         }
1137
1138         if (!qdio_has_inbound_q_moved(q))
1139                 goto out;
1140
1141         qdio_kick_inbound_handler(q);
1142         if (tiqdio_is_inbound_q_done(q))
1143                 if (!qdio_stop_polling(q)) {
1144                         /*
1145                          * we set the flags to get into the stuff next time,
1146                          * see also comment in qdio_stop_polling
1147                          */
1148                         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1149                         tiqdio_sched_tl();
1150                 }
1151 out:
1152         qdio_release_q(q);
1153 }
1154
1155 static void
1156 tiqdio_inbound_processing(struct qdio_q *q)
1157 {
1158         __tiqdio_inbound_processing(q, atomic_read(&spare_indicator_usecount));
1159 }
1160
1161 static inline void
1162 __qdio_inbound_processing(struct qdio_q *q)
1163 {
1164         int q_laps=0;
1165
1166         QDIO_DBF_TEXT4(0,trace,"qinproc");
1167         QDIO_DBF_HEX4(0,trace,&q,sizeof(void*));
1168
1169         if (unlikely(qdio_reserve_q(q))) {
1170                 qdio_release_q(q);
1171 #ifdef QDIO_PERFORMANCE_STATS
1172                 i_p_c++;
1173 #endif /* QDIO_PERFORMANCE_STATS */
1174                 /* as we're sissies, we'll check next time */
1175                 if (likely(!atomic_read(&q->is_in_shutdown))) {
1176                         qdio_mark_q(q);
1177                         QDIO_DBF_TEXT4(0,trace,"busy,agn");
1178                 }
1179                 return;
1180         }
1181 #ifdef QDIO_PERFORMANCE_STATS
1182         i_p_nc++;
1183         perf_stats.tl_runs++;
1184 #endif /* QDIO_PERFORMANCE_STATS */
1185
1186 again:
1187         if (qdio_has_inbound_q_moved(q)) {
1188                 qdio_kick_inbound_handler(q);
1189                 if (!qdio_stop_polling(q)) {
1190                         q_laps++;
1191                         if (q_laps<QDIO_Q_LAPS)
1192                                 goto again;
1193                 }
1194                 qdio_mark_q(q);
1195         } else {
1196                 if (!qdio_is_inbound_q_done(q))
1197                         /* means poll time is not yet over */
1198                         qdio_mark_q(q);
1199         }
1200
1201         qdio_release_q(q);
1202 }
1203
1204 static void
1205 qdio_inbound_processing(struct qdio_q *q)
1206 {
1207         __qdio_inbound_processing(q);
1208 }
1209
1210 /************************* MAIN ROUTINES *******************************/
1211
1212 #ifdef QDIO_USE_PROCESSING_STATE
1213 static inline int
1214 tiqdio_reset_processing_state(struct qdio_q *q, int q_laps)
1215 {
1216         if (!q) {
1217                 tiqdio_sched_tl();
1218                 return 0;
1219         }
1220
1221         /*
1222          * under VM, we have not used the PROCESSING state, so no
1223          * need to stop polling
1224          */
1225         if (q->siga_sync)
1226                 return 2;
1227
1228         if (unlikely(qdio_reserve_q(q))) {
1229                 qdio_release_q(q);
1230 #ifdef QDIO_PERFORMANCE_STATS
1231                 ii_p_c++;
1232 #endif /* QDIO_PERFORMANCE_STATS */
1233                 /*
1234                  * as we might just be about to stop polling, we make
1235                  * sure that we check again at least once more
1236                  */
1237
1238                 /*
1239                  * sanity -- we'd get here without setting the
1240                  * dev st chg ind
1241                  */
1242                 tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1243                 tiqdio_sched_tl();
1244                 return 0;
1245         }
1246         if (qdio_stop_polling(q)) {
1247                 qdio_release_q(q);
1248                 return 2;
1249         }
1250         if (q_laps<QDIO_Q_LAPS-1) {
1251                 qdio_release_q(q);
1252                 return 3;
1253         }
1254         /*
1255          * we set the flags to get into the stuff
1256          * next time, see also comment in qdio_stop_polling
1257          */
1258         tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind);
1259         tiqdio_sched_tl();
1260         qdio_release_q(q);
1261         return 1;
1262
1263 }
1264 #endif /* QDIO_USE_PROCESSING_STATE */
1265
1266 static inline void
1267 tiqdio_inbound_checks(void)
1268 {
1269         struct qdio_q *q;
1270         int spare_ind_was_set=0;
1271 #ifdef QDIO_USE_PROCESSING_STATE
1272         int q_laps=0;
1273 #endif /* QDIO_USE_PROCESSING_STATE */
1274
1275         QDIO_DBF_TEXT4(0,trace,"iqdinbck");
1276         QDIO_DBF_TEXT5(0,trace,"iqlocsum");
1277
1278 #ifdef QDIO_USE_PROCESSING_STATE
1279 again:
1280 #endif /* QDIO_USE_PROCESSING_STATE */
1281
1282         /* when the spare indicator is used and set, save that and clear it */
1283         if ((atomic_read(&spare_indicator_usecount)) && spare_indicator) {
1284                 spare_ind_was_set = 1;
1285                 tiqdio_clear_summary_bit((__u32*)&spare_indicator);
1286         }
1287
1288         q=(struct qdio_q*)tiq_list;
1289         do {
1290                 if (!q)
1291                         break;
1292                 __tiqdio_inbound_processing(q, spare_ind_was_set);
1293                 q=(struct qdio_q*)q->list_next;
1294         } while (q!=(struct qdio_q*)tiq_list);
1295
1296 #ifdef QDIO_USE_PROCESSING_STATE
1297         q=(struct qdio_q*)tiq_list;
1298         do {
1299                 int ret;
1300
1301                 ret = tiqdio_reset_processing_state(q, q_laps);
1302                 switch (ret) {
1303                 case 0:
1304                         return;
1305                 case 1:
1306                         q_laps++;
1307                 case 2:
1308                         q = (struct qdio_q*)q->list_next;
1309                         break;
1310                 default:
1311                         q_laps++;
1312                         goto again;
1313                 }
1314         } while (q!=(struct qdio_q*)tiq_list);
1315 #endif /* QDIO_USE_PROCESSING_STATE */
1316 }
1317
1318 static void
1319 tiqdio_tl(unsigned long data)
1320 {
1321         QDIO_DBF_TEXT4(0,trace,"iqdio_tl");
1322
1323 #ifdef QDIO_PERFORMANCE_STATS
1324         perf_stats.tl_runs++;
1325 #endif /* QDIO_PERFORMANCE_STATS */
1326
1327         tiqdio_inbound_checks();
1328 }
1329
1330 /********************* GENERAL HELPER_ROUTINES ***********************/
1331
1332 static void
1333 qdio_release_irq_memory(struct qdio_irq *irq_ptr)
1334 {
1335         int i;
1336
1337         for (i=0;i<QDIO_MAX_QUEUES_PER_IRQ;i++) {
1338                 if (!irq_ptr->input_qs[i])
1339                         goto next;
1340
1341                 kfree(irq_ptr->input_qs[i]->slib);
1342                 kfree(irq_ptr->input_qs[i]);
1343
1344 next:
1345                 if (!irq_ptr->output_qs[i])
1346                         continue;
1347
1348                 kfree(irq_ptr->output_qs[i]->slib);
1349                 kfree(irq_ptr->output_qs[i]);
1350
1351         }
1352         kfree(irq_ptr->qdr);
1353         kfree(irq_ptr);
1354 }
1355
1356 static void
1357 qdio_set_impl_params(struct qdio_irq *irq_ptr,
1358                      unsigned int qib_param_field_format,
1359                      /* pointer to 128 bytes or NULL, if no param field */
1360                      unsigned char *qib_param_field,
1361                      /* pointer to no_queues*128 words of data or NULL */
1362                      unsigned int no_input_qs,
1363                      unsigned int no_output_qs,
1364                      unsigned long *input_slib_elements,
1365                      unsigned long *output_slib_elements)
1366 {
1367         int i,j;
1368
1369         if (!irq_ptr)
1370                 return;
1371
1372         irq_ptr->qib.pfmt=qib_param_field_format;
1373         if (qib_param_field)
1374                 memcpy(irq_ptr->qib.parm,qib_param_field,
1375                        QDIO_MAX_BUFFERS_PER_Q);
1376
1377         if (input_slib_elements)
1378                 for (i=0;i<no_input_qs;i++) {
1379                         for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1380                                 irq_ptr->input_qs[i]->slib->slibe[j].parms=
1381                                         input_slib_elements[
1382                                                 i*QDIO_MAX_BUFFERS_PER_Q+j];
1383                 }
1384         if (output_slib_elements)
1385                 for (i=0;i<no_output_qs;i++) {
1386                         for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1387                                 irq_ptr->output_qs[i]->slib->slibe[j].parms=
1388                                         output_slib_elements[
1389                                                 i*QDIO_MAX_BUFFERS_PER_Q+j];
1390                 }
1391 }
1392
1393 static int
1394 qdio_alloc_qs(struct qdio_irq *irq_ptr,
1395               int no_input_qs, int no_output_qs)
1396 {
1397         int i;
1398         struct qdio_q *q;
1399         int result=-ENOMEM;
1400
1401         for (i=0;i<no_input_qs;i++) {
1402                 q=kmalloc(sizeof(struct qdio_q),GFP_KERNEL);
1403
1404                 if (!q) {
1405                         QDIO_PRINT_ERR("kmalloc of q failed!\n");
1406                         goto out;
1407                 }
1408
1409                 memset(q,0,sizeof(struct qdio_q));
1410
1411                 q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL);
1412                 if (!q->slib) {
1413                         QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1414                         goto out;
1415                 }
1416
1417                 irq_ptr->input_qs[i]=q;
1418         }
1419
1420         for (i=0;i<no_output_qs;i++) {
1421                 q=kmalloc(sizeof(struct qdio_q),GFP_KERNEL);
1422
1423                 if (!q) {
1424                         goto out;
1425                 }
1426
1427                 memset(q,0,sizeof(struct qdio_q));
1428
1429                 q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL);
1430                 if (!q->slib) {
1431                         QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1432                         goto out;
1433                 }
1434
1435                 irq_ptr->output_qs[i]=q;
1436         }
1437
1438         result=0;
1439 out:
1440         return result;
1441 }
1442
1443 static void
1444 qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev,
1445              int no_input_qs, int no_output_qs,
1446              qdio_handler_t *input_handler,
1447              qdio_handler_t *output_handler,
1448              unsigned long int_parm,int q_format,
1449              unsigned long flags,
1450              void **inbound_sbals_array,
1451              void **outbound_sbals_array)
1452 {
1453         struct qdio_q *q;
1454         int i,j;
1455         char dbf_text[20]; /* see qdio_initialize */
1456         void *ptr;
1457         int available;
1458
1459         sprintf(dbf_text,"qfqs%4x",cdev->private->irq);
1460         QDIO_DBF_TEXT0(0,setup,dbf_text);
1461         for (i=0;i<no_input_qs;i++) {
1462                 q=irq_ptr->input_qs[i];
1463
1464                 memset(q,0,((char*)&q->slib)-((char*)q));
1465                 sprintf(dbf_text,"in-q%4x",i);
1466                 QDIO_DBF_TEXT0(0,setup,dbf_text);
1467                 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1468
1469                 memset(q->slib,0,PAGE_SIZE);
1470                 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1471
1472                 available=0;
1473
1474                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1475                         q->sbal[j]=*(inbound_sbals_array++);
1476
1477                 q->queue_type=q_format;
1478                 q->int_parm=int_parm;
1479                 q->irq=irq_ptr->irq;
1480                 q->irq_ptr = irq_ptr;
1481                 q->cdev = cdev;
1482                 q->mask=1<<(31-i);
1483                 q->q_no=i;
1484                 q->is_input_q=1;
1485                 q->first_to_check=0;
1486                 q->last_move_ftc=0;
1487                 q->handler=input_handler;
1488                 q->dev_st_chg_ind=irq_ptr->dev_st_chg_ind;
1489
1490                 q->tasklet.data=(unsigned long)q;
1491                 /* q->is_thinint_q isn't valid at this time, but
1492                  * irq_ptr->is_thinint_irq is */
1493                 q->tasklet.func=(void(*)(unsigned long))
1494                         ((irq_ptr->is_thinint_irq)?&tiqdio_inbound_processing:
1495                          &qdio_inbound_processing);
1496
1497                 /* actually this is not used for inbound queues. yet. */
1498                 atomic_set(&q->busy_siga_counter,0);
1499                 q->timing.busy_start=0;
1500
1501 /*              for (j=0;j<QDIO_STATS_NUMBER;j++)
1502                         q->timing.last_transfer_times[j]=(qdio_get_micros()/
1503                                                           QDIO_STATS_NUMBER)*j;
1504                 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1505 */
1506
1507                 /* fill in slib */
1508                 if (i>0) irq_ptr->input_qs[i-1]->slib->nsliba=
1509                                  (unsigned long)(q->slib);
1510                 q->slib->sla=(unsigned long)(q->sl);
1511                 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1512
1513                 /* fill in sl */
1514                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1515                         q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1516
1517                 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1518                 ptr=(void*)q->sl;
1519                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1520                 ptr=(void*)&q->slsb;
1521                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1522                 ptr=(void*)q->sbal[0];
1523                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1524
1525                 /* fill in slsb */
1526                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) {
1527                         set_slsb(&q->slsb.acc.val[j],
1528                                  SLSB_P_INPUT_NOT_INIT);
1529 /*                      q->sbal[j]->element[1].sbalf.i1.key=QDIO_STORAGE_KEY;*/
1530                 }
1531         }
1532
1533         for (i=0;i<no_output_qs;i++) {
1534                 q=irq_ptr->output_qs[i];
1535                 memset(q,0,((char*)&q->slib)-((char*)q));
1536
1537                 sprintf(dbf_text,"outq%4x",i);
1538                 QDIO_DBF_TEXT0(0,setup,dbf_text);
1539                 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1540
1541                 memset(q->slib,0,PAGE_SIZE);
1542                 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1543
1544                 available=0;
1545
1546                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1547                         q->sbal[j]=*(outbound_sbals_array++);
1548
1549                 q->queue_type=q_format;
1550                 q->int_parm=int_parm;
1551                 q->is_input_q=0;
1552                 q->irq=irq_ptr->irq;
1553                 q->cdev = cdev;
1554                 q->irq_ptr = irq_ptr;
1555                 q->mask=1<<(31-i);
1556                 q->q_no=i;
1557                 q->first_to_check=0;
1558                 q->last_move_ftc=0;
1559                 q->handler=output_handler;
1560
1561                 q->tasklet.data=(unsigned long)q;
1562                 q->tasklet.func=(void(*)(unsigned long))
1563                         &qdio_outbound_processing;
1564
1565                 atomic_set(&q->busy_siga_counter,0);
1566                 q->timing.busy_start=0;
1567
1568                 /* fill in slib */
1569                 if (i>0) irq_ptr->output_qs[i-1]->slib->nsliba=
1570                                  (unsigned long)(q->slib);
1571                 q->slib->sla=(unsigned long)(q->sl);
1572                 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1573
1574                 /* fill in sl */
1575                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1576                         q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1577
1578                 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1579                 ptr=(void*)q->sl;
1580                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1581                 ptr=(void*)&q->slsb;
1582                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1583                 ptr=(void*)q->sbal[0];
1584                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1585
1586                 /* fill in slsb */
1587                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) {
1588                         set_slsb(&q->slsb.acc.val[j],
1589                                  SLSB_P_OUTPUT_NOT_INIT);
1590 /*                      q->sbal[j]->element[1].sbalf.i1.key=QDIO_STORAGE_KEY;*/
1591                 }
1592         }
1593 }
1594
1595 static void
1596 qdio_fill_thresholds(struct qdio_irq *irq_ptr,
1597                      unsigned int no_input_qs,
1598                      unsigned int no_output_qs,
1599                      unsigned int min_input_threshold,
1600                      unsigned int max_input_threshold,
1601                      unsigned int min_output_threshold,
1602                      unsigned int max_output_threshold)
1603 {
1604         int i;
1605         struct qdio_q *q;
1606
1607         for (i=0;i<no_input_qs;i++) {
1608                 q=irq_ptr->input_qs[i];
1609                 q->timing.threshold=max_input_threshold;
1610 /*              for (j=0;j<QDIO_STATS_CLASSES;j++) {
1611                         q->threshold_classes[j].threshold=
1612                                 min_input_threshold+
1613                                 (max_input_threshold-min_input_threshold)/
1614                                 QDIO_STATS_CLASSES;
1615                 }
1616                 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1617         }
1618         for (i=0;i<no_output_qs;i++) {
1619                 q=irq_ptr->output_qs[i];
1620                 q->timing.threshold=max_output_threshold;
1621 /*              for (j=0;j<QDIO_STATS_CLASSES;j++) {
1622                         q->threshold_classes[j].threshold=
1623                                 min_output_threshold+
1624                                 (max_output_threshold-min_output_threshold)/
1625                                 QDIO_STATS_CLASSES;
1626                 }
1627                 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1628         }
1629 }
1630
1631 static int
1632 tiqdio_thinint_handler(void)
1633 {
1634         QDIO_DBF_TEXT4(0,trace,"thin_int");
1635
1636 #ifdef QDIO_PERFORMANCE_STATS
1637         perf_stats.thinints++;
1638         perf_stats.start_time_inbound=NOW;
1639 #endif /* QDIO_PERFORMANCE_STATS */
1640
1641         /* SVS only when needed:
1642          * issue SVS to benefit from iqdio interrupt avoidance
1643          * (SVS clears AISOI)*/
1644         if (!omit_svs)
1645                 tiqdio_clear_global_summary();
1646
1647         tiqdio_inbound_checks();
1648         return 0;
1649 }
1650
1651 static void
1652 qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state)
1653 {
1654         int i;
1655 #ifdef CONFIG_QDIO_DEBUG
1656         char dbf_text[15];
1657
1658         QDIO_DBF_TEXT5(0,trace,"newstate");
1659         sprintf(dbf_text,"%4x%4x",irq_ptr->irq,state);
1660         QDIO_DBF_TEXT5(0,trace,dbf_text);
1661 #endif /* CONFIG_QDIO_DEBUG */
1662
1663         irq_ptr->state=state;
1664         for (i=0;i<irq_ptr->no_input_qs;i++)
1665                 irq_ptr->input_qs[i]->state=state;
1666         for (i=0;i<irq_ptr->no_output_qs;i++)
1667                 irq_ptr->output_qs[i]->state=state;
1668         mb();
1669 }
1670
1671 static inline void
1672 qdio_irq_check_sense(int irq, struct irb *irb)
1673 {
1674         char dbf_text[15];
1675
1676         if (irb->esw.esw0.erw.cons) {
1677                 sprintf(dbf_text,"sens%4x",irq);
1678                 QDIO_DBF_TEXT2(1,trace,dbf_text);
1679                 QDIO_DBF_HEX0(0,sense,irb,QDIO_DBF_SENSE_LEN);
1680
1681                 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1682                 HEXDUMP16(WARN,"irb: ",irb);
1683                 HEXDUMP16(WARN,"sense data: ",irb->ecw);
1684         }
1685
1686 }
1687
1688 static inline void
1689 qdio_handle_pci(struct qdio_irq *irq_ptr)
1690 {
1691         int i;
1692         struct qdio_q *q;
1693
1694 #ifdef QDIO_PERFORMANCE_STATS
1695         perf_stats.pcis++;
1696         perf_stats.start_time_inbound=NOW;
1697 #endif /* QDIO_PERFORMANCE_STATS */
1698         for (i=0;i<irq_ptr->no_input_qs;i++) {
1699                 q=irq_ptr->input_qs[i];
1700                 if (q->is_input_q&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT)
1701                         qdio_mark_q(q);
1702                 else {
1703 #ifdef QDIO_PERFORMANCE_STATS
1704                         perf_stats.tl_runs--;
1705 #endif /* QDIO_PERFORMANCE_STATS */
1706                         __qdio_inbound_processing(q);
1707                 }
1708         }
1709         if (!irq_ptr->hydra_gives_outbound_pcis)
1710                 return;
1711         for (i=0;i<irq_ptr->no_output_qs;i++) {
1712                 q=irq_ptr->output_qs[i];
1713 #ifdef QDIO_PERFORMANCE_STATS
1714                 perf_stats.tl_runs--;
1715 #endif /* QDIO_PERFORMANCE_STATS */
1716                 if (qdio_is_outbound_q_done(q))
1717                         continue;
1718                 if (!irq_ptr->sync_done_on_outb_pcis)
1719                         SYNC_MEMORY;
1720                 __qdio_outbound_processing(q);
1721         }
1722 }
1723
1724 static void qdio_establish_handle_irq(struct ccw_device*, int, int);
1725
1726 static inline void
1727 qdio_handle_activate_check(struct ccw_device *cdev, unsigned long intparm,
1728                            int cstat, int dstat)
1729 {
1730         struct qdio_irq *irq_ptr;
1731         struct qdio_q *q;
1732         char dbf_text[15];
1733
1734         irq_ptr = cdev->private->qdio_data;
1735
1736         QDIO_DBF_TEXT2(1, trace, "ick2");
1737         sprintf(dbf_text,"%s", cdev->dev.bus_id);
1738         QDIO_DBF_TEXT2(1,trace,dbf_text);
1739         QDIO_DBF_HEX2(0,trace,&intparm,sizeof(int));
1740         QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
1741         QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
1742         QDIO_PRINT_ERR("received check condition on activate " \
1743                        "queues on device %s (cs=x%x, ds=x%x).\n",
1744                        cdev->dev.bus_id, cstat, dstat);
1745         if (irq_ptr->no_input_qs) {
1746                 q=irq_ptr->input_qs[0];
1747         } else if (irq_ptr->no_output_qs) {
1748                 q=irq_ptr->output_qs[0];
1749         } else {
1750                 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
1751                                cdev->dev.bus_id);
1752                 goto omit_handler_call;
1753         }
1754         q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
1755                    QDIO_STATUS_LOOK_FOR_ERROR,
1756                    0,0,0,-1,-1,q->int_parm);
1757 omit_handler_call:
1758         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_STOPPED);
1759
1760 }
1761
1762 static void
1763 qdio_call_shutdown(void *data)
1764 {
1765         struct ccw_device *cdev;
1766
1767         cdev = (struct ccw_device *)data;
1768         qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
1769         put_device(&cdev->dev);
1770 }
1771
1772 static void
1773 qdio_timeout_handler(struct ccw_device *cdev)
1774 {
1775         struct qdio_irq *irq_ptr;
1776         char dbf_text[15];
1777
1778         QDIO_DBF_TEXT2(0, trace, "qtoh");
1779         sprintf(dbf_text, "%s", cdev->dev.bus_id);
1780         QDIO_DBF_TEXT2(0, trace, dbf_text);
1781
1782         irq_ptr = cdev->private->qdio_data;
1783         sprintf(dbf_text, "state:%d", irq_ptr->state);
1784         QDIO_DBF_TEXT2(0, trace, dbf_text);
1785
1786         switch (irq_ptr->state) {
1787         case QDIO_IRQ_STATE_INACTIVE:
1788                 QDIO_PRINT_ERR("establish queues on irq %04x: timed out\n",
1789                                irq_ptr->irq);
1790                 QDIO_DBF_TEXT2(1,setup,"eq:timeo");
1791                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
1792                 break;
1793         case QDIO_IRQ_STATE_CLEANUP:
1794                 QDIO_PRINT_INFO("Did not get interrupt on cleanup, irq=0x%x.\n",
1795                                 irq_ptr->irq);
1796                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
1797                 break;
1798         case QDIO_IRQ_STATE_ESTABLISHED:
1799         case QDIO_IRQ_STATE_ACTIVE:
1800                 /* I/O has been terminated by common I/O layer. */
1801                 QDIO_PRINT_INFO("Queues on irq %04x killed by cio.\n",
1802                                 irq_ptr->irq);
1803                 QDIO_DBF_TEXT2(1, trace, "cio:term");
1804                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
1805                 if (get_device(&cdev->dev)) {
1806                         /* Can't call shutdown from interrupt context. */
1807                         PREPARE_WORK(&cdev->private->kick_work,
1808                                      qdio_call_shutdown, (void *)cdev);
1809                         queue_work(ccw_device_work, &cdev->private->kick_work);
1810                 }
1811                 break;
1812         default:
1813                 BUG();
1814         }
1815         ccw_device_set_timeout(cdev, 0);
1816         wake_up(&cdev->private->wait_q);
1817 }
1818
1819 static void
1820 qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
1821 {
1822         struct qdio_irq *irq_ptr;
1823         int cstat,dstat;
1824         char dbf_text[15];
1825
1826 #ifdef CONFIG_QDIO_DEBUG
1827         QDIO_DBF_TEXT4(0, trace, "qint");
1828         sprintf(dbf_text, "%s", cdev->dev.bus_id);
1829         QDIO_DBF_TEXT4(0, trace, dbf_text);
1830 #endif /* CONFIG_QDIO_DEBUG */
1831
1832         if (!intparm) {
1833                 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
1834                                   "handler, device %s\n", cdev->dev.bus_id);
1835                 return;
1836         }
1837
1838         irq_ptr = cdev->private->qdio_data;
1839         if (!irq_ptr) {
1840                 QDIO_DBF_TEXT2(1, trace, "uint");
1841                 sprintf(dbf_text,"%s", cdev->dev.bus_id);
1842                 QDIO_DBF_TEXT2(1,trace,dbf_text);
1843                 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
1844                                cdev->dev.bus_id);
1845                 return;
1846         }
1847
1848         if (IS_ERR(irb)) {
1849                 /* Currently running i/o is in error. */
1850                 switch (PTR_ERR(irb)) {
1851                 case -EIO:
1852                         QDIO_PRINT_ERR("i/o error on device %s\n",
1853                                        cdev->dev.bus_id);
1854                         return;
1855                 case -ETIMEDOUT:
1856                         qdio_timeout_handler(cdev);
1857                         return;
1858                 default:
1859                         QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
1860                                        PTR_ERR(irb), cdev->dev.bus_id);
1861                         return;
1862                 }
1863         }
1864
1865         qdio_irq_check_sense(irq_ptr->irq, irb);
1866
1867 #ifdef CONFIG_QDIO_DEBUG
1868         sprintf(dbf_text, "state:%d", irq_ptr->state);
1869         QDIO_DBF_TEXT4(0, trace, dbf_text);
1870 #endif /* CONFIG_QDIO_DEBUG */
1871
1872         cstat = irb->scsw.cstat;
1873         dstat = irb->scsw.dstat;
1874
1875         switch (irq_ptr->state) {
1876         case QDIO_IRQ_STATE_INACTIVE:
1877                 qdio_establish_handle_irq(cdev, cstat, dstat);
1878                 break;
1879
1880         case QDIO_IRQ_STATE_CLEANUP:
1881                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
1882                 break;
1883
1884         case QDIO_IRQ_STATE_ESTABLISHED:
1885         case QDIO_IRQ_STATE_ACTIVE:
1886                 if (cstat & SCHN_STAT_PCI) {
1887                         qdio_handle_pci(irq_ptr);
1888                         break;
1889                 }
1890
1891                 if ((cstat&~SCHN_STAT_PCI)||dstat) {
1892                         qdio_handle_activate_check(cdev, intparm, cstat, dstat);
1893                         break;
1894                 }
1895         default:
1896                 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
1897                                "device %s?!\n",
1898                                irq_ptr->state, cdev->dev.bus_id);
1899         }
1900         wake_up(&cdev->private->wait_q);
1901
1902 }
1903
1904 int
1905 qdio_synchronize(struct ccw_device *cdev, unsigned int flags,
1906                  unsigned int queue_number)
1907 {
1908         int cc;
1909         struct qdio_q *q;
1910         struct qdio_irq *irq_ptr;
1911         void *ptr;
1912 #ifdef CONFIG_QDIO_DEBUG
1913         char dbf_text[15]="SyncXXXX";
1914 #endif
1915
1916         irq_ptr = cdev->private->qdio_data;
1917         if (!irq_ptr)
1918                 return -ENODEV;
1919
1920 #ifdef CONFIG_QDIO_DEBUG
1921         *((int*)(&dbf_text[4])) = irq_ptr->irq;
1922         QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
1923         *((int*)(&dbf_text[0]))=flags;
1924         *((int*)(&dbf_text[4]))=queue_number;
1925         QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
1926 #endif /* CONFIG_QDIO_DEBUG */
1927
1928         if (flags&QDIO_FLAG_SYNC_INPUT) {
1929                 q=irq_ptr->input_qs[queue_number];
1930                 if (!q)
1931                         return -EINVAL;
1932                 cc = do_siga_sync(q->irq, 0, q->mask);
1933         } else if (flags&QDIO_FLAG_SYNC_OUTPUT) {
1934                 q=irq_ptr->output_qs[queue_number];
1935                 if (!q)
1936                         return -EINVAL;
1937                 cc = do_siga_sync(q->irq, q->mask, 0);
1938         } else
1939                 return -EINVAL;
1940
1941         ptr=&cc;
1942         if (cc)
1943                 QDIO_DBF_HEX3(0,trace,&ptr,sizeof(int));
1944
1945         return cc;
1946 }
1947
1948 static unsigned char
1949 qdio_check_siga_needs(int sch)
1950 {
1951         int result;
1952         unsigned char qdioac;
1953
1954         struct {
1955                 struct chsc_header request;
1956                 u16 reserved1;
1957                 u16 first_sch;
1958                 u16 reserved2;
1959                 u16 last_sch;
1960                 u32 reserved3;
1961                 struct chsc_header response;
1962                 u32 reserved4;
1963                 u8  flags;
1964                 u8  reserved5;
1965                 u16 sch;
1966                 u8  qfmt;
1967                 u8  reserved6;
1968                 u8  qdioac;
1969                 u8  sch_class;
1970                 u8  reserved7;
1971                 u8  icnt;
1972                 u8  reserved8;
1973                 u8  ocnt;
1974         } *ssqd_area;
1975
1976         ssqd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
1977         if (!ssqd_area) {
1978                 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
1979                                 "SIGAs for sch x%x.\n", sch);
1980                 return CHSC_FLAG_SIGA_INPUT_NECESSARY ||
1981                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
1982                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
1983         }
1984         ssqd_area->request = (struct chsc_header) {
1985                 .length = 0x0010,
1986                 .code   = 0x0024,
1987         };
1988
1989         ssqd_area->first_sch = sch;
1990         ssqd_area->last_sch = sch;
1991
1992         result=chsc(ssqd_area);
1993
1994         if (result) {
1995                 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
1996                                 "SIGAs for sch x%x.\n",
1997                                 result,sch);
1998                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
1999                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2000                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2001                 goto out;
2002         }
2003
2004         if (ssqd_area->response.code != QDIO_CHSC_RESPONSE_CODE_OK) {
2005                 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2006                                 "is 0x%x. Using all SIGAs for sch x%x.\n",
2007                                 ssqd_area->response.code, sch);
2008                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
2009                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2010                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2011                 goto out;
2012         }
2013         if (!(ssqd_area->flags & CHSC_FLAG_QDIO_CAPABILITY) ||
2014             !(ssqd_area->flags & CHSC_FLAG_VALIDITY) ||
2015             (ssqd_area->sch != sch)) {
2016                 QDIO_PRINT_WARN("huh? problems checking out sch x%x... " \
2017                                 "using all SIGAs.\n",sch);
2018                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2019                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2020                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* worst case */
2021                 goto out;
2022         }
2023
2024         qdioac = ssqd_area->qdioac;
2025 out:
2026         free_page ((unsigned long) ssqd_area);
2027         return qdioac;
2028 }
2029
2030 static unsigned int
2031 tiqdio_check_chsc_availability(void)
2032 {
2033         char dbf_text[15];
2034
2035         if (!css_characteristics_avail)
2036                 return -EIO;
2037
2038         /* Check for bit 41. */
2039         if (!css_general_characteristics.aif) {
2040                 QDIO_PRINT_WARN("Adapter interruption facility not " \
2041                                 "installed.\n");
2042                 return -ENOENT;
2043         }
2044
2045         /* Check for bits 107 and 108. */
2046         if (!css_chsc_characteristics.scssc ||
2047             !css_chsc_characteristics.scsscf) {
2048                 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2049                                 "not available.\n");
2050                 return -ENOENT;
2051         }
2052
2053         /* Check for OSA/FCP thin interrupts (bit 67). */
2054         hydra_thinints = css_general_characteristics.aif_osa;
2055         sprintf(dbf_text,"hydrati%1x", hydra_thinints);
2056         QDIO_DBF_TEXT0(0,setup,dbf_text);
2057
2058         /* Check for aif time delay disablement fac (bit 56). If installed,
2059          * omit svs even under lpar (good point by rick again) */
2060         omit_svs = css_general_characteristics.aif_tdd;
2061         sprintf(dbf_text,"omitsvs%1x", omit_svs);
2062         QDIO_DBF_TEXT0(0,setup,dbf_text);
2063         return 0;
2064 }
2065
2066
2067 static unsigned int
2068 tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
2069 {
2070         unsigned long real_addr_local_summary_bit;
2071         unsigned long real_addr_dev_st_chg_ind;
2072         void *ptr;
2073         char dbf_text[15];
2074
2075         unsigned int resp_code;
2076         int result;
2077
2078         struct {
2079                 struct chsc_header request;
2080                 u16 operation_code;
2081                 u16 reserved1;
2082                 u32 reserved2;
2083                 u32 reserved3;
2084                 u64 summary_indicator_addr;
2085                 u64 subchannel_indicator_addr;
2086                 u32 ks:4;
2087                 u32 kc:4;
2088                 u32 reserved4:21;
2089                 u32 isc:3;
2090                 u32 word_with_d_bit;
2091                 /* set to 0x10000000 to enable
2092                  * time delay disablement facility */
2093                 u32 reserved5;
2094                 u32 subsystem_id;
2095                 u32 reserved6[1004];
2096                 struct chsc_header response;
2097                 u32 reserved7;
2098         } *scssc_area;
2099
2100         if (!irq_ptr->is_thinint_irq)
2101                 return -ENODEV;
2102
2103         if (reset_to_zero) {
2104                 real_addr_local_summary_bit=0;
2105                 real_addr_dev_st_chg_ind=0;
2106         } else {
2107                 real_addr_local_summary_bit=
2108                         virt_to_phys((volatile void *)indicators);
2109                 real_addr_dev_st_chg_ind=
2110                         virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
2111         }
2112
2113         scssc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
2114         if (!scssc_area) {
2115                 QDIO_PRINT_WARN("No memory for setting indicators on " \
2116                                 "subchannel x%x.\n", irq_ptr->irq);
2117                 return -ENOMEM;
2118         }
2119         scssc_area->request = (struct chsc_header) {
2120                 .length = 0x0fe0,
2121                 .code   = 0x0021,
2122         };
2123         scssc_area->operation_code = 0;
2124
2125         scssc_area->summary_indicator_addr = real_addr_local_summary_bit;
2126         scssc_area->subchannel_indicator_addr = real_addr_dev_st_chg_ind;
2127         scssc_area->ks = QDIO_STORAGE_KEY;
2128         scssc_area->kc = QDIO_STORAGE_KEY;
2129         scssc_area->isc = TIQDIO_THININT_ISC;
2130         scssc_area->subsystem_id = (1<<16) + irq_ptr->irq;
2131         /* enables the time delay disablement facility. Don't care
2132          * whether it is really there (i.e. we haven't checked for
2133          * it) */
2134         if (css_general_characteristics.aif_tdd)
2135                 scssc_area->word_with_d_bit = 0x10000000;
2136         else
2137                 QDIO_PRINT_WARN("Time delay disablement facility " \
2138                                 "not available\n");
2139
2140
2141
2142         result = chsc(scssc_area);
2143         if (result) {
2144                 QDIO_PRINT_WARN("could not set indicators on irq x%x, " \
2145                                 "cc=%i.\n",irq_ptr->irq,result);
2146                 result = -EIO;
2147                 goto out;
2148         }
2149
2150         resp_code = scssc_area->response.code;
2151         if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2152                 QDIO_PRINT_WARN("response upon setting indicators " \
2153                                 "is 0x%x.\n",resp_code);
2154                 sprintf(dbf_text,"sidR%4x",resp_code);
2155                 QDIO_DBF_TEXT1(0,trace,dbf_text);
2156                 QDIO_DBF_TEXT1(0,setup,dbf_text);
2157                 ptr=&scssc_area->response;
2158                 QDIO_DBF_HEX2(1,setup,&ptr,QDIO_DBF_SETUP_LEN);
2159                 result = -EIO;
2160                 goto out;
2161         }
2162
2163         QDIO_DBF_TEXT2(0,setup,"setscind");
2164         QDIO_DBF_HEX2(0,setup,&real_addr_local_summary_bit,
2165                       sizeof(unsigned long));
2166         QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
2167         result = 0;
2168 out:
2169         free_page ((unsigned long) scssc_area);
2170         return result;
2171
2172 }
2173
2174 static unsigned int
2175 tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
2176 {
2177         unsigned int resp_code;
2178         int result;
2179         void *ptr;
2180         char dbf_text[15];
2181
2182         struct {
2183                 struct chsc_header request;
2184                 u16 operation_code;
2185                 u16 reserved1;
2186                 u32 reserved2;
2187                 u32 reserved3;
2188                 u32 reserved4[2];
2189                 u32 delay_target;
2190                 u32 reserved5[1009];
2191                 struct chsc_header response;
2192                 u32 reserved6;
2193         } *scsscf_area;
2194
2195         if (!irq_ptr->is_thinint_irq)
2196                 return -ENODEV;
2197
2198         scsscf_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
2199         if (!scsscf_area) {
2200                 QDIO_PRINT_WARN("No memory for setting delay target on " \
2201                                 "subchannel x%x.\n", irq_ptr->irq);
2202                 return -ENOMEM;
2203         }
2204         scsscf_area->request = (struct chsc_header) {
2205                 .length = 0x0fe0,
2206                 .code   = 0x1027,
2207         };
2208
2209         scsscf_area->delay_target = delay_target<<16;
2210
2211         result=chsc(scsscf_area);
2212         if (result) {
2213                 QDIO_PRINT_WARN("could not set delay target on irq x%x, " \
2214                                 "cc=%i. Continuing.\n",irq_ptr->irq,result);
2215                 result = -EIO;
2216                 goto out;
2217         }
2218
2219         resp_code = scsscf_area->response.code;
2220         if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2221                 QDIO_PRINT_WARN("response upon setting delay target " \
2222                                 "is 0x%x. Continuing.\n",resp_code);
2223                 sprintf(dbf_text,"sdtR%4x",resp_code);
2224                 QDIO_DBF_TEXT1(0,trace,dbf_text);
2225                 QDIO_DBF_TEXT1(0,setup,dbf_text);
2226                 ptr=&scsscf_area->response;
2227                 QDIO_DBF_HEX2(1,trace,&ptr,QDIO_DBF_TRACE_LEN);
2228         }
2229         QDIO_DBF_TEXT2(0,trace,"delytrgt");
2230         QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
2231         result = 0; /* not critical */
2232 out:
2233         free_page ((unsigned long) scsscf_area);
2234         return result;
2235 }
2236
2237 int
2238 qdio_cleanup(struct ccw_device *cdev, int how)
2239 {
2240         struct qdio_irq *irq_ptr;
2241         char dbf_text[15];
2242         int rc;
2243
2244         irq_ptr = cdev->private->qdio_data;
2245         if (!irq_ptr)
2246                 return -ENODEV;
2247
2248         sprintf(dbf_text,"qcln%4x",irq_ptr->irq);
2249         QDIO_DBF_TEXT1(0,trace,dbf_text);
2250         QDIO_DBF_TEXT0(0,setup,dbf_text);
2251
2252         rc = qdio_shutdown(cdev, how);
2253         if ((rc == 0) || (rc == -EINPROGRESS))
2254                 rc = qdio_free(cdev);
2255         return rc;
2256 }
2257
2258 int
2259 qdio_shutdown(struct ccw_device *cdev, int how)
2260 {
2261         struct qdio_irq *irq_ptr;
2262         int i;
2263         int result = 0;
2264         int rc;
2265         unsigned long flags;
2266         int timeout;
2267         char dbf_text[15];
2268
2269         irq_ptr = cdev->private->qdio_data;
2270         if (!irq_ptr)
2271                 return -ENODEV;
2272
2273         down(&irq_ptr->setting_up_sema);
2274
2275         sprintf(dbf_text,"qsqs%4x",irq_ptr->irq);
2276         QDIO_DBF_TEXT1(0,trace,dbf_text);
2277         QDIO_DBF_TEXT0(0,setup,dbf_text);
2278
2279         /* mark all qs as uninteresting */
2280         for (i=0;i<irq_ptr->no_input_qs;i++)
2281                 atomic_set(&irq_ptr->input_qs[i]->is_in_shutdown,1);
2282
2283         for (i=0;i<irq_ptr->no_output_qs;i++)
2284                 atomic_set(&irq_ptr->output_qs[i]->is_in_shutdown,1);
2285
2286         tasklet_kill(&tiqdio_tasklet);
2287
2288         for (i=0;i<irq_ptr->no_input_qs;i++) {
2289                 qdio_unmark_q(irq_ptr->input_qs[i]);
2290                 tasklet_kill(&irq_ptr->input_qs[i]->tasklet);
2291                 wait_event_interruptible_timeout(cdev->private->wait_q,
2292                                                  !atomic_read(&irq_ptr->
2293                                                               input_qs[i]->
2294                                                               use_count),
2295                                                  QDIO_NO_USE_COUNT_TIMEOUT);
2296                 if (atomic_read(&irq_ptr->input_qs[i]->use_count))
2297                         result=-EINPROGRESS;
2298         }
2299
2300         for (i=0;i<irq_ptr->no_output_qs;i++) {
2301                 tasklet_kill(&irq_ptr->output_qs[i]->tasklet);
2302                 wait_event_interruptible_timeout(cdev->private->wait_q,
2303                                                  !atomic_read(&irq_ptr->
2304                                                               output_qs[i]->
2305                                                               use_count),
2306                                                  QDIO_NO_USE_COUNT_TIMEOUT);
2307                 if (atomic_read(&irq_ptr->output_qs[i]->use_count))
2308                         result=-EINPROGRESS;
2309         }
2310
2311         /* cleanup subchannel */
2312         spin_lock_irqsave(get_ccwdev_lock(cdev),flags);
2313         if (how&QDIO_FLAG_CLEANUP_USING_CLEAR) {
2314                 rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
2315                 timeout=QDIO_CLEANUP_CLEAR_TIMEOUT;
2316         } else if (how&QDIO_FLAG_CLEANUP_USING_HALT) {
2317                 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2318                 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2319         } else { /* default behaviour */
2320                 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2321                 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2322         }
2323         if (rc == -ENODEV) {
2324                 /* No need to wait for device no longer present. */
2325                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2326                 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2327         } else if (((void *)cdev->handler != (void *)qdio_handler) && rc == 0) {
2328                 /*
2329                  * Whoever put another handler there, has to cope with the
2330                  * interrupt theirself. Might happen if qdio_shutdown was
2331                  * called on already shutdown queues, but this shouldn't have
2332                  * bad side effects.
2333                  */
2334                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2335                 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2336         } else if (rc == 0) {
2337                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
2338                 ccw_device_set_timeout(cdev, timeout);
2339                 spin_unlock_irqrestore(get_ccwdev_lock(cdev),flags);
2340
2341                 wait_event(cdev->private->wait_q,
2342                            irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
2343                            irq_ptr->state == QDIO_IRQ_STATE_ERR);
2344         } else {
2345                 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2346                                 "device %s\n", result, cdev->dev.bus_id);
2347                 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2348                 result = rc;
2349                 goto out;
2350         }
2351         if (irq_ptr->is_thinint_irq) {
2352                 qdio_put_indicator((__u32*)irq_ptr->dev_st_chg_ind);
2353                 tiqdio_set_subchannel_ind(irq_ptr,1);
2354                 /* reset adapter interrupt indicators */
2355         }
2356
2357         /* exchange int handlers, if necessary */
2358         if ((void*)cdev->handler == (void*)qdio_handler)
2359                 cdev->handler=irq_ptr->original_int_handler;
2360
2361         /* Ignore errors. */
2362         qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2363         ccw_device_set_timeout(cdev, 0);
2364 out:
2365         up(&irq_ptr->setting_up_sema);
2366         return result;
2367 }
2368
2369 int
2370 qdio_free(struct ccw_device *cdev)
2371 {
2372         struct qdio_irq *irq_ptr;
2373         char dbf_text[15];
2374
2375         irq_ptr = cdev->private->qdio_data;
2376         if (!irq_ptr)
2377                 return -ENODEV;
2378
2379         down(&irq_ptr->setting_up_sema);
2380
2381         sprintf(dbf_text,"qfqs%4x",irq_ptr->irq);
2382         QDIO_DBF_TEXT1(0,trace,dbf_text);
2383         QDIO_DBF_TEXT0(0,setup,dbf_text);
2384
2385         cdev->private->qdio_data = 0;
2386
2387         up(&irq_ptr->setting_up_sema);
2388
2389         qdio_release_irq_memory(irq_ptr);
2390         module_put(THIS_MODULE);
2391         return 0;
2392 }
2393
2394 static inline void
2395 qdio_allocate_do_dbf(struct qdio_initialize *init_data)
2396 {
2397         char dbf_text[20]; /* if a printf printed out more than 8 chars */
2398
2399         sprintf(dbf_text,"qfmt:%x",init_data->q_format);
2400         QDIO_DBF_TEXT0(0,setup,dbf_text);
2401         QDIO_DBF_HEX0(0,setup,init_data->adapter_name,8);
2402         sprintf(dbf_text,"qpff%4x",init_data->qib_param_field_format);
2403         QDIO_DBF_TEXT0(0,setup,dbf_text);
2404         QDIO_DBF_HEX0(0,setup,&init_data->qib_param_field,sizeof(char*));
2405         QDIO_DBF_HEX0(0,setup,&init_data->input_slib_elements,sizeof(long*));
2406         QDIO_DBF_HEX0(0,setup,&init_data->output_slib_elements,sizeof(long*));
2407         sprintf(dbf_text,"miit%4x",init_data->min_input_threshold);
2408         QDIO_DBF_TEXT0(0,setup,dbf_text);
2409         sprintf(dbf_text,"mait%4x",init_data->max_input_threshold);
2410         QDIO_DBF_TEXT0(0,setup,dbf_text);
2411         sprintf(dbf_text,"miot%4x",init_data->min_output_threshold);
2412         QDIO_DBF_TEXT0(0,setup,dbf_text);
2413         sprintf(dbf_text,"maot%4x",init_data->max_output_threshold);
2414         QDIO_DBF_TEXT0(0,setup,dbf_text);
2415         sprintf(dbf_text,"niq:%4x",init_data->no_input_qs);
2416         QDIO_DBF_TEXT0(0,setup,dbf_text);
2417         sprintf(dbf_text,"noq:%4x",init_data->no_output_qs);
2418         QDIO_DBF_TEXT0(0,setup,dbf_text);
2419         QDIO_DBF_HEX0(0,setup,&init_data->input_handler,sizeof(void*));
2420         QDIO_DBF_HEX0(0,setup,&init_data->output_handler,sizeof(void*));
2421         QDIO_DBF_HEX0(0,setup,&init_data->int_parm,sizeof(long));
2422         QDIO_DBF_HEX0(0,setup,&init_data->flags,sizeof(long));
2423         QDIO_DBF_HEX0(0,setup,&init_data->input_sbal_addr_array,sizeof(void*));
2424         QDIO_DBF_HEX0(0,setup,&init_data->output_sbal_addr_array,sizeof(void*));
2425 }
2426
2427 static inline void
2428 qdio_allocate_fill_input_desc(struct qdio_irq *irq_ptr, int i, int iqfmt)
2429 {
2430         irq_ptr->input_qs[i]->is_iqdio_q = iqfmt;
2431         irq_ptr->input_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2432
2433         irq_ptr->qdr->qdf0[i].sliba=(unsigned long)(irq_ptr->input_qs[i]->slib);
2434
2435         irq_ptr->qdr->qdf0[i].sla=(unsigned long)(irq_ptr->input_qs[i]->sl);
2436
2437         irq_ptr->qdr->qdf0[i].slsba=
2438                 (unsigned long)(&irq_ptr->input_qs[i]->slsb.acc.val[0]);
2439
2440         irq_ptr->qdr->qdf0[i].akey=QDIO_STORAGE_KEY;
2441         irq_ptr->qdr->qdf0[i].bkey=QDIO_STORAGE_KEY;
2442         irq_ptr->qdr->qdf0[i].ckey=QDIO_STORAGE_KEY;
2443         irq_ptr->qdr->qdf0[i].dkey=QDIO_STORAGE_KEY;
2444 }
2445
2446 static inline void
2447 qdio_allocate_fill_output_desc(struct qdio_irq *irq_ptr, int i,
2448                                int j, int iqfmt)
2449 {
2450         irq_ptr->output_qs[i]->is_iqdio_q = iqfmt;
2451         irq_ptr->output_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2452
2453         irq_ptr->qdr->qdf0[i+j].sliba=(unsigned long)(irq_ptr->output_qs[i]->slib);
2454
2455         irq_ptr->qdr->qdf0[i+j].sla=(unsigned long)(irq_ptr->output_qs[i]->sl);
2456
2457         irq_ptr->qdr->qdf0[i+j].slsba=
2458                 (unsigned long)(&irq_ptr->output_qs[i]->slsb.acc.val[0]);
2459
2460         irq_ptr->qdr->qdf0[i+j].akey=QDIO_STORAGE_KEY;
2461         irq_ptr->qdr->qdf0[i+j].bkey=QDIO_STORAGE_KEY;
2462         irq_ptr->qdr->qdf0[i+j].ckey=QDIO_STORAGE_KEY;
2463         irq_ptr->qdr->qdf0[i+j].dkey=QDIO_STORAGE_KEY;
2464 }
2465
2466
2467 static inline void
2468 qdio_initialize_set_siga_flags_input(struct qdio_irq *irq_ptr)
2469 {
2470         int i;
2471
2472         for (i=0;i<irq_ptr->no_input_qs;i++) {
2473                 irq_ptr->input_qs[i]->siga_sync=
2474                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2475                 irq_ptr->input_qs[i]->siga_in=
2476                         irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2477                 irq_ptr->input_qs[i]->siga_out=
2478                         irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2479                 irq_ptr->input_qs[i]->siga_sync_done_on_thinints=
2480                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2481                 irq_ptr->input_qs[i]->hydra_gives_outbound_pcis=
2482                         irq_ptr->hydra_gives_outbound_pcis;
2483                 irq_ptr->input_qs[i]->siga_sync_done_on_outb_tis=
2484                         ((irq_ptr->qdioac&
2485                           (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2486                            CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2487                          (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2488                           CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2489
2490         }
2491 }
2492
2493 static inline void
2494 qdio_initialize_set_siga_flags_output(struct qdio_irq *irq_ptr)
2495 {
2496         int i;
2497
2498         for (i=0;i<irq_ptr->no_output_qs;i++) {
2499                 irq_ptr->output_qs[i]->siga_sync=
2500                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2501                 irq_ptr->output_qs[i]->siga_in=
2502                         irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2503                 irq_ptr->output_qs[i]->siga_out=
2504                         irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2505                 irq_ptr->output_qs[i]->siga_sync_done_on_thinints=
2506                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2507                 irq_ptr->output_qs[i]->hydra_gives_outbound_pcis=
2508                         irq_ptr->hydra_gives_outbound_pcis;
2509                 irq_ptr->output_qs[i]->siga_sync_done_on_outb_tis=
2510                         ((irq_ptr->qdioac&
2511                           (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2512                            CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2513                          (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2514                           CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2515
2516         }
2517 }
2518
2519 static inline int
2520 qdio_establish_irq_check_for_errors(struct ccw_device *cdev, int cstat,
2521                                     int dstat)
2522 {
2523         char dbf_text[15];
2524         struct qdio_irq *irq_ptr;
2525
2526         irq_ptr = cdev->private->qdio_data;
2527
2528         if (cstat || (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END))) {
2529                 sprintf(dbf_text,"ick1%4x",irq_ptr->irq);
2530                 QDIO_DBF_TEXT2(1,trace,dbf_text);
2531                 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2532                 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2533                 QDIO_PRINT_ERR("received check condition on establish " \
2534                                "queues on irq 0x%x (cs=x%x, ds=x%x).\n",
2535                                irq_ptr->irq,cstat,dstat);
2536                 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ERR);
2537         }
2538
2539         if (!(dstat & DEV_STAT_DEV_END)) {
2540                 QDIO_DBF_TEXT2(1,setup,"eq:no de");
2541                 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2542                 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2543                 QDIO_PRINT_ERR("establish queues on irq %04x: didn't get "
2544                                "device end: dstat=%02x, cstat=%02x\n",
2545                                irq_ptr->irq, dstat, cstat);
2546                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2547                 return 1;
2548         }
2549
2550         if (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) {
2551                 QDIO_DBF_TEXT2(1,setup,"eq:badio");
2552                 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2553                 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2554                 QDIO_PRINT_ERR("establish queues on irq %04x: got "
2555                                "the following devstat: dstat=%02x, "
2556                                "cstat=%02x\n",
2557                                irq_ptr->irq, dstat, cstat);
2558                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2559                 return 1;
2560         }
2561         return 0;
2562 }
2563
2564 static void
2565 qdio_establish_handle_irq(struct ccw_device *cdev, int cstat, int dstat)
2566 {
2567         struct qdio_irq *irq_ptr;
2568         char dbf_text[15];
2569
2570         irq_ptr = cdev->private->qdio_data;
2571
2572         sprintf(dbf_text,"qehi%4x",cdev->private->irq);
2573         QDIO_DBF_TEXT0(0,setup,dbf_text);
2574         QDIO_DBF_TEXT0(0,trace,dbf_text);
2575
2576         if (qdio_establish_irq_check_for_errors(cdev, cstat, dstat)) {
2577                 ccw_device_set_timeout(cdev, 0);
2578                 return;
2579         }
2580
2581         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ESTABLISHED);
2582         ccw_device_set_timeout(cdev, 0);
2583 }
2584
2585 int
2586 qdio_initialize(struct qdio_initialize *init_data)
2587 {
2588         int rc;
2589         char dbf_text[15];
2590
2591         sprintf(dbf_text,"qini%4x",init_data->cdev->private->irq);
2592         QDIO_DBF_TEXT0(0,setup,dbf_text);
2593         QDIO_DBF_TEXT0(0,trace,dbf_text);
2594
2595         rc = qdio_allocate(init_data);
2596         if (rc == 0) {
2597                 rc = qdio_establish(init_data);
2598                 if (rc != 0)
2599                         qdio_free(init_data->cdev);
2600         }
2601
2602         return rc;
2603 }
2604
2605
2606 int
2607 qdio_allocate(struct qdio_initialize *init_data)
2608 {
2609         struct qdio_irq *irq_ptr;
2610         char dbf_text[15];
2611
2612         sprintf(dbf_text,"qalc%4x",init_data->cdev->private->irq);
2613         QDIO_DBF_TEXT0(0,setup,dbf_text);
2614         QDIO_DBF_TEXT0(0,trace,dbf_text);
2615         if ( (init_data->no_input_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2616              (init_data->no_output_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2617              ((init_data->no_input_qs) && (!init_data->input_handler)) ||
2618              ((init_data->no_output_qs) && (!init_data->output_handler)) )
2619                 return -EINVAL;
2620
2621         if (!init_data->input_sbal_addr_array)
2622                 return -EINVAL;
2623
2624         if (!init_data->output_sbal_addr_array)
2625                 return -EINVAL;
2626
2627         qdio_allocate_do_dbf(init_data);
2628
2629         /* create irq */
2630         irq_ptr=kmalloc(sizeof(struct qdio_irq), GFP_KERNEL | GFP_DMA);
2631
2632         QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
2633         QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
2634
2635         if (!irq_ptr) {
2636                 QDIO_PRINT_ERR("kmalloc of irq_ptr failed!\n");
2637                 return -ENOMEM;
2638         }
2639
2640         memset(irq_ptr,0,sizeof(struct qdio_irq));
2641
2642         init_MUTEX(&irq_ptr->setting_up_sema);
2643
2644         /* QDR must be in DMA area since CCW data address is only 32 bit */
2645         irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA);
2646         if (!(irq_ptr->qdr)) {
2647                 kfree(irq_ptr);
2648                 QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
2649                 return -ENOMEM;
2650         }
2651         QDIO_DBF_TEXT0(0,setup,"qdr:");
2652         QDIO_DBF_HEX0(0,setup,&irq_ptr->qdr,sizeof(void*));
2653
2654         if (qdio_alloc_qs(irq_ptr,
2655                           init_data->no_input_qs,
2656                           init_data->no_output_qs)) {
2657                 qdio_release_irq_memory(irq_ptr);
2658                 return -ENOMEM;
2659         }
2660
2661         init_data->cdev->private->qdio_data = irq_ptr;
2662
2663         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_INACTIVE);
2664
2665         return 0;
2666 }
2667
2668 int qdio_fill_irq(struct qdio_initialize *init_data)
2669 {
2670         int i;
2671         char dbf_text[15];
2672         struct ciw *ciw;
2673         int is_iqdio;
2674         struct qdio_irq *irq_ptr;
2675
2676         irq_ptr = init_data->cdev->private->qdio_data;
2677
2678         memset(irq_ptr,0,((char*)&irq_ptr->qdr)-((char*)irq_ptr));
2679
2680         /* wipes qib.ac, required by ar7063 */
2681         memset(irq_ptr->qdr,0,sizeof(struct qdr));
2682
2683         irq_ptr->int_parm=init_data->int_parm;
2684
2685         irq_ptr->irq = init_data->cdev->private->irq;
2686         irq_ptr->no_input_qs=init_data->no_input_qs;
2687         irq_ptr->no_output_qs=init_data->no_output_qs;
2688
2689         if (init_data->q_format==QDIO_IQDIO_QFMT) {
2690                 irq_ptr->is_iqdio_irq=1;
2691                 irq_ptr->is_thinint_irq=1;
2692         } else {
2693                 irq_ptr->is_iqdio_irq=0;
2694                 irq_ptr->is_thinint_irq=hydra_thinints;
2695         }
2696         sprintf(dbf_text,"is_i_t%1x%1x",
2697                 irq_ptr->is_iqdio_irq,irq_ptr->is_thinint_irq);
2698         QDIO_DBF_TEXT2(0,setup,dbf_text);
2699
2700         if (irq_ptr->is_thinint_irq) {
2701                 irq_ptr->dev_st_chg_ind=qdio_get_indicator();
2702                 QDIO_DBF_HEX1(0,setup,&irq_ptr->dev_st_chg_ind,sizeof(void*));
2703                 if (!irq_ptr->dev_st_chg_ind) {
2704                         QDIO_PRINT_WARN("no indicator location available " \
2705                                         "for irq 0x%x\n",irq_ptr->irq);
2706                         qdio_release_irq_memory(irq_ptr);
2707                         return -ENOBUFS;
2708                 }
2709         }
2710
2711         /* defaults */
2712         irq_ptr->equeue.cmd=DEFAULT_ESTABLISH_QS_CMD;
2713         irq_ptr->equeue.count=DEFAULT_ESTABLISH_QS_COUNT;
2714         irq_ptr->aqueue.cmd=DEFAULT_ACTIVATE_QS_CMD;
2715         irq_ptr->aqueue.count=DEFAULT_ACTIVATE_QS_COUNT;
2716
2717         qdio_fill_qs(irq_ptr, init_data->cdev,
2718                      init_data->no_input_qs,
2719                      init_data->no_output_qs,
2720                      init_data->input_handler,
2721                      init_data->output_handler,init_data->int_parm,
2722                      init_data->q_format,init_data->flags,
2723                      init_data->input_sbal_addr_array,
2724                      init_data->output_sbal_addr_array);
2725
2726         if (!try_module_get(THIS_MODULE)) {
2727                 QDIO_PRINT_CRIT("try_module_get() failed!\n");
2728                 qdio_release_irq_memory(irq_ptr);
2729                 return -EINVAL;
2730         }
2731
2732         qdio_fill_thresholds(irq_ptr,init_data->no_input_qs,
2733                              init_data->no_output_qs,
2734                              init_data->min_input_threshold,
2735                              init_data->max_input_threshold,
2736                              init_data->min_output_threshold,
2737                              init_data->max_output_threshold);
2738
2739         /* fill in qdr */
2740         irq_ptr->qdr->qfmt=init_data->q_format;
2741         irq_ptr->qdr->iqdcnt=init_data->no_input_qs;
2742         irq_ptr->qdr->oqdcnt=init_data->no_output_qs;
2743         irq_ptr->qdr->iqdsz=sizeof(struct qdesfmt0)/4; /* size in words */
2744         irq_ptr->qdr->oqdsz=sizeof(struct qdesfmt0)/4;
2745
2746         irq_ptr->qdr->qiba=(unsigned long)&irq_ptr->qib;
2747         irq_ptr->qdr->qkey=QDIO_STORAGE_KEY;
2748
2749         /* fill in qib */
2750         irq_ptr->qib.qfmt=init_data->q_format;
2751         if (init_data->no_input_qs)
2752                 irq_ptr->qib.isliba=(unsigned long)(irq_ptr->input_qs[0]->slib);
2753         if (init_data->no_output_qs)
2754                 irq_ptr->qib.osliba=(unsigned long)(irq_ptr->output_qs[0]->slib);
2755         memcpy(irq_ptr->qib.ebcnam,init_data->adapter_name,8);
2756
2757         qdio_set_impl_params(irq_ptr,init_data->qib_param_field_format,
2758                              init_data->qib_param_field,
2759                              init_data->no_input_qs,
2760                              init_data->no_output_qs,
2761                              init_data->input_slib_elements,
2762                              init_data->output_slib_elements);
2763
2764         /* first input descriptors, then output descriptors */
2765         is_iqdio = (init_data->q_format == QDIO_IQDIO_QFMT) ? 1 : 0;
2766         for (i=0;i<init_data->no_input_qs;i++)
2767                 qdio_allocate_fill_input_desc(irq_ptr, i, is_iqdio);
2768
2769         for (i=0;i<init_data->no_output_qs;i++)
2770                 qdio_allocate_fill_output_desc(irq_ptr, i,
2771                                                init_data->no_input_qs,
2772                                                is_iqdio);
2773
2774         /* qdr, qib, sls, slsbs, slibs, sbales filled. */
2775
2776         /* get qdio commands */
2777         ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
2778         if (!ciw) {
2779                 QDIO_DBF_TEXT2(1,setup,"no eq");
2780                 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
2781                                 "Trying to use default.\n");
2782         } else
2783                 irq_ptr->equeue = *ciw;
2784         ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
2785         if (!ciw) {
2786                 QDIO_DBF_TEXT2(1,setup,"no aq");
2787                 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
2788                                 "Trying to use default.\n");
2789         } else
2790                 irq_ptr->aqueue = *ciw;
2791
2792         /* Set new interrupt handler. */
2793         irq_ptr->original_int_handler = init_data->cdev->handler;
2794         init_data->cdev->handler = qdio_handler;
2795
2796         return 0;
2797 }
2798
2799 int
2800 qdio_establish(struct qdio_initialize *init_data)
2801 {
2802         struct qdio_irq *irq_ptr;
2803         unsigned long saveflags;
2804         int result, result2;
2805         struct ccw_device *cdev;
2806         char dbf_text[20];
2807
2808         cdev=init_data->cdev;
2809         irq_ptr = cdev->private->qdio_data;
2810         if (!irq_ptr)
2811                 return -EINVAL;
2812
2813         if (cdev->private->state != DEV_STATE_ONLINE)
2814                 return -EINVAL;
2815
2816         down(&irq_ptr->setting_up_sema);
2817
2818         qdio_fill_irq(init_data);
2819
2820         /* the thinint CHSC stuff */
2821         if (irq_ptr->is_thinint_irq) {
2822
2823                 result = tiqdio_set_subchannel_ind(irq_ptr,0);
2824                 if (result) {
2825                         up(&irq_ptr->setting_up_sema);
2826                         qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2827                         return result;
2828                 }
2829                 tiqdio_set_delay_target(irq_ptr,TIQDIO_DELAY_TARGET);
2830         }
2831
2832         sprintf(dbf_text,"qest%4x",cdev->private->irq);
2833         QDIO_DBF_TEXT0(0,setup,dbf_text);
2834         QDIO_DBF_TEXT0(0,trace,dbf_text);
2835
2836         /* establish q */
2837         irq_ptr->ccw.cmd_code=irq_ptr->equeue.cmd;
2838         irq_ptr->ccw.flags=CCW_FLAG_SLI;
2839         irq_ptr->ccw.count=irq_ptr->equeue.count;
2840         irq_ptr->ccw.cda=QDIO_GET_ADDR(irq_ptr->qdr);
2841
2842         spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
2843
2844         ccw_device_set_options(cdev, 0);
2845         result=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
2846                                         QDIO_DOING_ESTABLISH,0, 0,
2847                                         QDIO_ESTABLISH_TIMEOUT);
2848         if (result) {
2849                 result2=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
2850                                                  QDIO_DOING_ESTABLISH,0,0,
2851                                                  QDIO_ESTABLISH_TIMEOUT);
2852                 sprintf(dbf_text,"eq:io%4x",result);
2853                 QDIO_DBF_TEXT2(1,setup,dbf_text);
2854                 if (result2) {
2855                         sprintf(dbf_text,"eq:io%4x",result);
2856                         QDIO_DBF_TEXT2(1,setup,dbf_text);
2857                 }
2858                 QDIO_PRINT_WARN("establish queues on irq %04x: do_IO " \
2859                            "returned %i, next try returned %i\n",
2860                            irq_ptr->irq,result,result2);
2861                 result=result2;
2862                 if (result)
2863                         ccw_device_set_timeout(cdev, 0);
2864         }
2865
2866         spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
2867
2868         if (result) {
2869                 up(&irq_ptr->setting_up_sema);
2870                 qdio_shutdown(cdev,QDIO_FLAG_CLEANUP_USING_CLEAR);
2871                 return result;
2872         }
2873
2874         /* Timeout is cared for already by using ccw_device_start_timeout(). */
2875         wait_event_interruptible(cdev->private->wait_q,
2876                  irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED ||
2877                  irq_ptr->state == QDIO_IRQ_STATE_ERR);
2878
2879         if (irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED)
2880                 result = 0;
2881         else {
2882                 up(&irq_ptr->setting_up_sema);
2883                 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2884                 return -EIO;
2885         }
2886
2887         irq_ptr->qdioac=qdio_check_siga_needs(irq_ptr->irq);
2888         /* if this gets set once, we're running under VM and can omit SVSes */
2889         if (irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY)
2890                 omit_svs=1;
2891
2892         sprintf(dbf_text,"qdioac%2x",irq_ptr->qdioac);
2893         QDIO_DBF_TEXT2(0,setup,dbf_text);
2894
2895         sprintf(dbf_text,"qib ac%2x",irq_ptr->qib.ac);
2896         QDIO_DBF_TEXT2(0,setup,dbf_text);
2897
2898         irq_ptr->hydra_gives_outbound_pcis=
2899                 irq_ptr->qib.ac&QIB_AC_OUTBOUND_PCI_SUPPORTED;
2900         irq_ptr->sync_done_on_outb_pcis=
2901                 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS;
2902
2903         qdio_initialize_set_siga_flags_input(irq_ptr);
2904         qdio_initialize_set_siga_flags_output(irq_ptr);
2905
2906         up(&irq_ptr->setting_up_sema);
2907
2908         return result;
2909
2910 }
2911
2912 int
2913 qdio_activate(struct ccw_device *cdev, int flags)
2914 {
2915         struct qdio_irq *irq_ptr;
2916         int i,result=0,result2;
2917         unsigned long saveflags;
2918         char dbf_text[20]; /* see qdio_initialize */
2919
2920         irq_ptr = cdev->private->qdio_data;
2921         if (!irq_ptr)
2922                 return -ENODEV;
2923
2924         if (cdev->private->state != DEV_STATE_ONLINE)
2925                 return -EINVAL;
2926
2927         down(&irq_ptr->setting_up_sema);
2928         if (irq_ptr->state==QDIO_IRQ_STATE_INACTIVE) {
2929                 result=-EBUSY;
2930                 goto out;
2931         }
2932
2933         sprintf(dbf_text,"qact%4x", irq_ptr->irq);
2934         QDIO_DBF_TEXT2(0,setup,dbf_text);
2935         QDIO_DBF_TEXT2(0,trace,dbf_text);
2936
2937         /* activate q */
2938         irq_ptr->ccw.cmd_code=irq_ptr->aqueue.cmd;
2939         irq_ptr->ccw.flags=CCW_FLAG_SLI;
2940         irq_ptr->ccw.count=irq_ptr->aqueue.count;
2941         irq_ptr->ccw.cda=QDIO_GET_ADDR(0);
2942
2943         spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
2944
2945         ccw_device_set_timeout(cdev, 0);
2946         ccw_device_set_options(cdev, CCWDEV_REPORT_ALL);
2947         result=ccw_device_start(cdev,&irq_ptr->ccw,QDIO_DOING_ACTIVATE,
2948                                 0, DOIO_DENY_PREFETCH);
2949         if (result) {
2950                 result2=ccw_device_start(cdev,&irq_ptr->ccw,
2951                                          QDIO_DOING_ACTIVATE,0,0);
2952                 sprintf(dbf_text,"aq:io%4x",result);
2953                 QDIO_DBF_TEXT2(1,setup,dbf_text);
2954                 if (result2) {
2955                         sprintf(dbf_text,"aq:io%4x",result);
2956                         QDIO_DBF_TEXT2(1,setup,dbf_text);
2957                 }
2958                 QDIO_PRINT_WARN("activate queues on irq %04x: do_IO " \
2959                            "returned %i, next try returned %i\n",
2960                            irq_ptr->irq,result,result2);
2961                 result=result2;
2962         }
2963
2964         spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
2965         if (result)
2966                 goto out;
2967
2968         for (i=0;i<irq_ptr->no_input_qs;i++) {
2969                 if (irq_ptr->is_thinint_irq) {
2970                         /*
2971                          * that way we know, that, if we will get interrupted
2972                          * by tiqdio_inbound_processing, qdio_unmark_q will
2973                          * not be called
2974                          */
2975                         qdio_reserve_q(irq_ptr->input_qs[i]);
2976                         qdio_mark_tiq(irq_ptr->input_qs[i]);
2977                         qdio_release_q(irq_ptr->input_qs[i]);
2978                 }
2979         }
2980
2981         if (flags&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT) {
2982                 for (i=0;i<irq_ptr->no_input_qs;i++) {
2983                         irq_ptr->input_qs[i]->is_input_q|=
2984                                 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT;
2985                 }
2986         }
2987
2988         wait_event_interruptible_timeout(cdev->private->wait_q,
2989                                          ((irq_ptr->state ==
2990                                           QDIO_IRQ_STATE_STOPPED) ||
2991                                           (irq_ptr->state ==
2992                                            QDIO_IRQ_STATE_ERR)),
2993                                          QDIO_ACTIVATE_TIMEOUT);
2994
2995         switch (irq_ptr->state) {
2996         case QDIO_IRQ_STATE_STOPPED:
2997         case QDIO_IRQ_STATE_ERR:
2998                 up(&irq_ptr->setting_up_sema);
2999                 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
3000                 down(&irq_ptr->setting_up_sema);
3001                 result = -EIO;
3002                 break;
3003         default:
3004                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ACTIVE);
3005                 result = 0;
3006         }
3007  out:
3008         up(&irq_ptr->setting_up_sema);
3009
3010         return result;
3011 }
3012
3013 /* buffers filled forwards again to make Rick happy */
3014 static inline void
3015 qdio_do_qdio_fill_input(struct qdio_q *q, unsigned int qidx,
3016                         unsigned int count, struct qdio_buffer *buffers)
3017 {
3018         for (;;) {
3019                 set_slsb(&q->slsb.acc.val[qidx],SLSB_CU_INPUT_EMPTY);
3020                 count--;
3021                 if (!count) break;
3022                 qidx=(qidx+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
3023         }
3024
3025         /* not necessary, as the queues are synced during the SIGA read */
3026         /*SYNC_MEMORY;*/
3027 }
3028
3029 static inline void
3030 qdio_do_qdio_fill_output(struct qdio_q *q, unsigned int qidx,
3031                          unsigned int count, struct qdio_buffer *buffers)
3032 {
3033         for (;;) {
3034                 set_slsb(&q->slsb.acc.val[qidx],SLSB_CU_OUTPUT_PRIMED);
3035                 count--;
3036                 if (!count) break;
3037                 qidx=(qidx+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
3038         }
3039
3040         /* SIGA write will sync the queues */
3041         /*SYNC_MEMORY;*/
3042 }
3043
3044 static inline void
3045 do_qdio_handle_inbound(struct qdio_q *q, unsigned int callflags,
3046                        unsigned int qidx, unsigned int count,
3047                        struct qdio_buffer *buffers)
3048 {
3049         int used_elements;
3050
3051         /* This is the inbound handling of queues */
3052         used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3053
3054         qdio_do_qdio_fill_input(q,qidx,count,buffers);
3055
3056         if ((used_elements+count==QDIO_MAX_BUFFERS_PER_Q)&&
3057             (callflags&QDIO_FLAG_UNDER_INTERRUPT))
3058                 atomic_swap(&q->polling,0);
3059
3060         if (used_elements)
3061                 return;
3062         if (callflags&QDIO_FLAG_DONT_SIGA)
3063                 return;
3064         if (q->siga_in) {
3065                 int result;
3066
3067                 result=qdio_siga_input(q);
3068                 if (result) {
3069                         if (q->siga_error)
3070                                 q->error_status_flags|=
3071                                         QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
3072                         q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
3073                         q->siga_error=result;
3074                 }
3075         }
3076
3077         qdio_mark_q(q);
3078 }
3079
3080 static inline void
3081 do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
3082                         unsigned int qidx, unsigned int count,
3083                         struct qdio_buffer *buffers)
3084 {
3085         int used_elements;
3086
3087         /* This is the outbound handling of queues */
3088 #ifdef QDIO_PERFORMANCE_STATS
3089         perf_stats.start_time_outbound=NOW;
3090 #endif /* QDIO_PERFORMANCE_STATS */
3091
3092         qdio_do_qdio_fill_output(q,qidx,count,buffers);
3093
3094         used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3095
3096         if (callflags&QDIO_FLAG_DONT_SIGA) {
3097 #ifdef QDIO_PERFORMANCE_STATS
3098                 perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
3099                 perf_stats.outbound_cnt++;
3100 #endif /* QDIO_PERFORMANCE_STATS */
3101                 return;
3102         }
3103         if (q->is_iqdio_q) {
3104                 /* one siga for every sbal */
3105                 while (count--)
3106                         qdio_kick_outbound_q(q);
3107
3108                 __qdio_outbound_processing(q);
3109         } else {
3110                 /* under VM, we do a SIGA sync unconditionally */
3111                 SYNC_MEMORY;
3112                 else {
3113                         /*
3114                          * w/o shadow queues (else branch of
3115                          * SYNC_MEMORY :-/ ), we try to
3116                          * fast-requeue buffers
3117                          */
3118                         if (q->slsb.acc.val[(qidx+QDIO_MAX_BUFFERS_PER_Q-1)
3119                                             &(QDIO_MAX_BUFFERS_PER_Q-1)]!=
3120                             SLSB_CU_OUTPUT_PRIMED) {
3121                                 qdio_kick_outbound_q(q);
3122                         } else {
3123                                 QDIO_DBF_TEXT3(0,trace, "fast-req");
3124 #ifdef QDIO_PERFORMANCE_STATS
3125                                 perf_stats.fast_reqs++;
3126 #endif /* QDIO_PERFORMANCE_STATS */
3127                         }
3128                 }
3129                 /*
3130                  * only marking the q could take too long,
3131                  * the upper layer module could do a lot of
3132                  * traffic in that time
3133                  */
3134                 __qdio_outbound_processing(q);
3135         }
3136
3137 #ifdef QDIO_PERFORMANCE_STATS
3138         perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
3139         perf_stats.outbound_cnt++;
3140 #endif /* QDIO_PERFORMANCE_STATS */
3141 }
3142
3143 /* count must be 1 in iqdio */
3144 int
3145 do_QDIO(struct ccw_device *cdev,unsigned int callflags,
3146         unsigned int queue_number, unsigned int qidx,
3147         unsigned int count,struct qdio_buffer *buffers)
3148 {
3149         struct qdio_irq *irq_ptr;
3150 #ifdef CONFIG_QDIO_DEBUG
3151         char dbf_text[20];
3152
3153         sprintf(dbf_text,"doQD%04x",cdev->private->irq);
3154         QDIO_DBF_TEXT3(0,trace,dbf_text);
3155 #endif /* CONFIG_QDIO_DEBUG */
3156
3157         if ( (qidx>QDIO_MAX_BUFFERS_PER_Q) ||
3158              (count>QDIO_MAX_BUFFERS_PER_Q) ||
3159              (queue_number>QDIO_MAX_QUEUES_PER_IRQ) )
3160                 return -EINVAL;
3161
3162         if (count==0)
3163                 return 0;
3164
3165         irq_ptr = cdev->private->qdio_data;
3166         if (!irq_ptr)
3167                 return -ENODEV;
3168
3169 #ifdef CONFIG_QDIO_DEBUG
3170         if (callflags&QDIO_FLAG_SYNC_INPUT)
3171                 QDIO_DBF_HEX3(0,trace,&irq_ptr->input_qs[queue_number],
3172                               sizeof(void*));
3173         else
3174                 QDIO_DBF_HEX3(0,trace,&irq_ptr->output_qs[queue_number],
3175                               sizeof(void*));
3176         sprintf(dbf_text,"flag%04x",callflags);
3177         QDIO_DBF_TEXT3(0,trace,dbf_text);
3178         sprintf(dbf_text,"qi%02xct%02x",qidx,count);
3179         QDIO_DBF_TEXT3(0,trace,dbf_text);
3180 #endif /* CONFIG_QDIO_DEBUG */
3181
3182         if (irq_ptr->state!=QDIO_IRQ_STATE_ACTIVE)
3183                 return -EBUSY;
3184
3185         if (callflags&QDIO_FLAG_SYNC_INPUT)
3186                 do_qdio_handle_inbound(irq_ptr->input_qs[queue_number],
3187                                        callflags, qidx, count, buffers);
3188         else if (callflags&QDIO_FLAG_SYNC_OUTPUT)
3189                 do_qdio_handle_outbound(irq_ptr->output_qs[queue_number],
3190                                         callflags, qidx, count, buffers);
3191         else {
3192                 QDIO_DBF_TEXT3(1,trace,"doQD:inv");
3193                 return -EINVAL;
3194         }
3195         return 0;
3196 }
3197
3198 #ifdef QDIO_PERFORMANCE_STATS
3199 static int
3200 qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
3201                         int buffer_length, int *eof, void *data)
3202 {
3203         int c=0;
3204
3205         /* we are always called with buffer_length=4k, so we all
3206            deliver on the first read */
3207         if (offset>0)
3208                 return 0;
3209
3210 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3211         _OUTP_IT("i_p_nc/c=%lu/%lu\n",i_p_nc,i_p_c);
3212         _OUTP_IT("ii_p_nc/c=%lu/%lu\n",ii_p_nc,ii_p_c);
3213         _OUTP_IT("o_p_nc/c=%lu/%lu\n",o_p_nc,o_p_c);
3214         _OUTP_IT("Number of tasklet runs (total)                  : %u\n",
3215                  perf_stats.tl_runs);
3216         _OUTP_IT("\n");
3217         _OUTP_IT("Number of SIGA sync's issued                    : %u\n",
3218                  perf_stats.siga_syncs);
3219         _OUTP_IT("Number of SIGA in's issued                      : %u\n",
3220                  perf_stats.siga_ins);
3221         _OUTP_IT("Number of SIGA out's issued                     : %u\n",
3222                  perf_stats.siga_outs);
3223         _OUTP_IT("Number of PCIs caught                           : %u\n",
3224                  perf_stats.pcis);
3225         _OUTP_IT("Number of adapter interrupts caught             : %u\n",
3226                  perf_stats.thinints);
3227         _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA)  : %u\n",
3228                  perf_stats.fast_reqs);
3229         _OUTP_IT("\n");
3230         _OUTP_IT("Total time of all inbound actions (us) incl. UL : %u\n",
3231                  perf_stats.inbound_time);
3232         _OUTP_IT("Number of inbound transfers                     : %u\n",
3233                  perf_stats.inbound_cnt);
3234         _OUTP_IT("Total time of all outbound do_QDIOs (us)        : %u\n",
3235                  perf_stats.outbound_time);
3236         _OUTP_IT("Number of do_QDIOs outbound                     : %u\n",
3237                  perf_stats.outbound_cnt);
3238         _OUTP_IT("\n");
3239
3240         return c;
3241 }
3242
3243 static struct proc_dir_entry *qdio_perf_proc_file;
3244 #endif /* QDIO_PERFORMANCE_STATS */
3245
3246 static void
3247 qdio_add_procfs_entry(void)
3248 {
3249 #ifdef QDIO_PERFORMANCE_STATS
3250         proc_perf_file_registration=0;
3251         qdio_perf_proc_file=create_proc_entry(QDIO_PERF,
3252                                               S_IFREG|0444,&proc_root);
3253         if (qdio_perf_proc_file) {
3254                 qdio_perf_proc_file->read_proc=&qdio_perf_procfile_read;
3255         } else proc_perf_file_registration=-1;
3256
3257         if (proc_perf_file_registration)
3258                 QDIO_PRINT_WARN("was not able to register perf. " \
3259                                 "proc-file (%i).\n",
3260                                 proc_perf_file_registration);
3261 #endif /* QDIO_PERFORMANCE_STATS */
3262 }
3263
3264 static void
3265 qdio_remove_procfs_entry(void)
3266 {
3267 #ifdef QDIO_PERFORMANCE_STATS
3268         perf_stats.tl_runs=0;
3269
3270         if (!proc_perf_file_registration) /* means if it went ok earlier */
3271                 remove_proc_entry(QDIO_PERF,&proc_root);
3272 #endif /* QDIO_PERFORMANCE_STATS */
3273 }
3274
3275 static void
3276 tiqdio_register_thinints(void)
3277 {
3278         char dbf_text[20];
3279         register_thinint_result=
3280                 s390_register_adapter_interrupt(&tiqdio_thinint_handler);
3281         if (register_thinint_result) {
3282                 sprintf(dbf_text,"regthn%x",(register_thinint_result&0xff));
3283                 QDIO_DBF_TEXT0(0,setup,dbf_text);
3284                 QDIO_PRINT_ERR("failed to register adapter handler " \
3285                                "(rc=%i).\nAdapter interrupts might " \
3286                                "not work. Continuing.\n",
3287                                register_thinint_result);
3288         }
3289 }
3290
3291 static void
3292 tiqdio_unregister_thinints(void)
3293 {
3294         if (!register_thinint_result)
3295                 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler);
3296 }
3297
3298 static int
3299 qdio_get_qdio_memory(void)
3300 {
3301         int i;
3302         indicator_used[0]=1;
3303
3304         for (i=1;i<INDICATORS_PER_CACHELINE;i++)
3305                 indicator_used[i]=0;
3306         indicators=(__u32*)kmalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE),
3307                                    GFP_KERNEL);
3308         if (!indicators) return -ENOMEM;
3309         memset(indicators,0,sizeof(__u32)*(INDICATORS_PER_CACHELINE));
3310         return 0;
3311 }
3312
3313 static void
3314 qdio_release_qdio_memory(void)
3315 {
3316         kfree(indicators);
3317 }
3318
3319 static void
3320 qdio_unregister_dbf_views(void)
3321 {
3322         if (qdio_dbf_setup)
3323                 debug_unregister(qdio_dbf_setup);
3324         if (qdio_dbf_sbal)
3325                 debug_unregister(qdio_dbf_sbal);
3326         if (qdio_dbf_sense)
3327                 debug_unregister(qdio_dbf_sense);
3328         if (qdio_dbf_trace)
3329                 debug_unregister(qdio_dbf_trace);
3330 #ifdef CONFIG_QDIO_DEBUG
3331         if (qdio_dbf_slsb_out)
3332                 debug_unregister(qdio_dbf_slsb_out);
3333         if (qdio_dbf_slsb_in)
3334                 debug_unregister(qdio_dbf_slsb_in);
3335 #endif /* CONFIG_QDIO_DEBUG */
3336 }
3337
3338 static int
3339 qdio_register_dbf_views(void)
3340 {
3341         qdio_dbf_setup=debug_register(QDIO_DBF_SETUP_NAME,
3342                                       QDIO_DBF_SETUP_PAGES,
3343                                       QDIO_DBF_SETUP_NR_AREAS,
3344                                       QDIO_DBF_SETUP_LEN);
3345         if (!qdio_dbf_setup)
3346                 goto oom;
3347         debug_register_view(qdio_dbf_setup,&debug_hex_ascii_view);
3348         debug_set_level(qdio_dbf_setup,QDIO_DBF_SETUP_LEVEL);
3349
3350         qdio_dbf_sbal=debug_register(QDIO_DBF_SBAL_NAME,
3351                                      QDIO_DBF_SBAL_PAGES,
3352                                      QDIO_DBF_SBAL_NR_AREAS,
3353                                      QDIO_DBF_SBAL_LEN);
3354         if (!qdio_dbf_sbal)
3355                 goto oom;
3356
3357         debug_register_view(qdio_dbf_sbal,&debug_hex_ascii_view);
3358         debug_set_level(qdio_dbf_sbal,QDIO_DBF_SBAL_LEVEL);
3359
3360         qdio_dbf_sense=debug_register(QDIO_DBF_SENSE_NAME,
3361                                       QDIO_DBF_SENSE_PAGES,
3362                                       QDIO_DBF_SENSE_NR_AREAS,
3363                                       QDIO_DBF_SENSE_LEN);
3364         if (!qdio_dbf_sense)
3365                 goto oom;
3366
3367         debug_register_view(qdio_dbf_sense,&debug_hex_ascii_view);
3368         debug_set_level(qdio_dbf_sense,QDIO_DBF_SENSE_LEVEL);
3369
3370         qdio_dbf_trace=debug_register(QDIO_DBF_TRACE_NAME,
3371                                       QDIO_DBF_TRACE_PAGES,
3372                                       QDIO_DBF_TRACE_NR_AREAS,
3373                                       QDIO_DBF_TRACE_LEN);
3374         if (!qdio_dbf_trace)
3375                 goto oom;
3376
3377         debug_register_view(qdio_dbf_trace,&debug_hex_ascii_view);
3378         debug_set_level(qdio_dbf_trace,QDIO_DBF_TRACE_LEVEL);
3379
3380 #ifdef CONFIG_QDIO_DEBUG
3381         qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME,
3382                                          QDIO_DBF_SLSB_OUT_PAGES,
3383                                          QDIO_DBF_SLSB_OUT_NR_AREAS,
3384                                          QDIO_DBF_SLSB_OUT_LEN);
3385         if (!qdio_dbf_slsb_out)
3386                 goto oom;
3387         debug_register_view(qdio_dbf_slsb_out,&debug_hex_ascii_view);
3388         debug_set_level(qdio_dbf_slsb_out,QDIO_DBF_SLSB_OUT_LEVEL);
3389
3390         qdio_dbf_slsb_in=debug_register(QDIO_DBF_SLSB_IN_NAME,
3391                                         QDIO_DBF_SLSB_IN_PAGES,
3392                                         QDIO_DBF_SLSB_IN_NR_AREAS,
3393                                         QDIO_DBF_SLSB_IN_LEN);
3394         if (!qdio_dbf_slsb_in)
3395                 goto oom;
3396         debug_register_view(qdio_dbf_slsb_in,&debug_hex_ascii_view);
3397         debug_set_level(qdio_dbf_slsb_in,QDIO_DBF_SLSB_IN_LEVEL);
3398 #endif /* CONFIG_QDIO_DEBUG */
3399         return 0;
3400 oom:
3401         QDIO_PRINT_ERR("not enough memory for dbf.\n");
3402         qdio_unregister_dbf_views();
3403         return -ENOMEM;
3404 }
3405
3406 static int __init
3407 init_QDIO(void)
3408 {
3409         int res;
3410 #ifdef QDIO_PERFORMANCE_STATS
3411         void *ptr;
3412 #endif /* QDIO_PERFORMANCE_STATS */
3413
3414         printk("qdio: loading %s\n",version);
3415
3416         res=qdio_get_qdio_memory();
3417         if (res)
3418                 return res;
3419
3420         res = qdio_register_dbf_views();
3421         if (res)
3422                 return res;
3423
3424         QDIO_DBF_TEXT0(0,setup,"initQDIO");
3425
3426 #ifdef QDIO_PERFORMANCE_STATS
3427         memset((void*)&perf_stats,0,sizeof(perf_stats));
3428         QDIO_DBF_TEXT0(0,setup,"perfstat");
3429         ptr=&perf_stats;
3430         QDIO_DBF_HEX0(0,setup,&ptr,sizeof(void*));
3431 #endif /* QDIO_PERFORMANCE_STATS */
3432
3433         qdio_add_procfs_entry();
3434
3435         if (tiqdio_check_chsc_availability())
3436                 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3437
3438         tiqdio_register_thinints();
3439
3440         return 0;
3441  }
3442
3443 static void __exit
3444 cleanup_QDIO(void)
3445 {
3446         tiqdio_unregister_thinints();
3447         qdio_remove_procfs_entry();
3448         qdio_release_qdio_memory();
3449         qdio_unregister_dbf_views();
3450
3451         printk("qdio: %s: module removed\n",version);
3452 }
3453
3454 module_init(init_QDIO);
3455 module_exit(cleanup_QDIO);
3456
3457 EXPORT_SYMBOL(qdio_allocate);
3458 EXPORT_SYMBOL(qdio_establish);
3459 EXPORT_SYMBOL(qdio_initialize);
3460 EXPORT_SYMBOL(qdio_activate);
3461 EXPORT_SYMBOL(do_QDIO);
3462 EXPORT_SYMBOL(qdio_shutdown);
3463 EXPORT_SYMBOL(qdio_free);
3464 EXPORT_SYMBOL(qdio_cleanup);
3465 EXPORT_SYMBOL(qdio_synchronize);