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: 1.84 $"
  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 spinlock_t ttiq_list_lock=SPIN_LOCK_UNLOCKED;
  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 volatile __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_iqdio_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 inline static 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 inline static 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 inline static 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 inline static 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                         q->timing.busy_start=0;
 609 #endif /* CONFIG_QDIO_DEBUG */
 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 inline static 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 inline static 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
 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 inline static 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 inline static int
 902 iqdio_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 inline static 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 inline static 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 (iqdio_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                 if (irq_ptr->input_qs[i]->slib)
1342                         kfree(irq_ptr->input_qs[i]->slib);
1343                 kfree(irq_ptr->input_qs[i]);
1344
1345 next:
1346                 if (!irq_ptr->output_qs[i])
1347                         continue;
1348
1349                 if (irq_ptr->output_qs[i]->slib)
1350                         kfree(irq_ptr->output_qs[i]->slib);
1351                 kfree(irq_ptr->output_qs[i]);
1352
1353         }
1354         kfree(irq_ptr->qdr);
1355         kfree(irq_ptr);
1356 }
1357
1358 static void
1359 qdio_set_impl_params(struct qdio_irq *irq_ptr,
1360                      unsigned int qib_param_field_format,
1361                      /* pointer to 128 bytes or NULL, if no param field */
1362                      unsigned char *qib_param_field,
1363                      /* pointer to no_queues*128 words of data or NULL */
1364                      unsigned int no_input_qs,
1365                      unsigned int no_output_qs,
1366                      unsigned long *input_slib_elements,
1367                      unsigned long *output_slib_elements)
1368 {
1369         int i,j;
1370
1371         if (!irq_ptr)
1372                 return;
1373
1374         irq_ptr->qib.pfmt=qib_param_field_format;
1375         if (qib_param_field)
1376                 memcpy(irq_ptr->qib.parm,qib_param_field,
1377                        QDIO_MAX_BUFFERS_PER_Q);
1378
1379         if (input_slib_elements)
1380                 for (i=0;i<no_input_qs;i++) {
1381                         for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1382                                 irq_ptr->input_qs[i]->slib->slibe[j].parms=
1383                                         input_slib_elements[
1384                                                 i*QDIO_MAX_BUFFERS_PER_Q+j];
1385                 }
1386         if (output_slib_elements)
1387                 for (i=0;i<no_output_qs;i++) {
1388                         for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1389                                 irq_ptr->output_qs[i]->slib->slibe[j].parms=
1390                                         output_slib_elements[
1391                                                 i*QDIO_MAX_BUFFERS_PER_Q+j];
1392                 }
1393 }
1394
1395 static int
1396 qdio_alloc_qs(struct qdio_irq *irq_ptr,
1397               int no_input_qs, int no_output_qs)
1398 {
1399         int i;
1400         struct qdio_q *q;
1401         int result=-ENOMEM;
1402
1403         for (i=0;i<no_input_qs;i++) {
1404                 q=kmalloc(sizeof(struct qdio_q),GFP_KERNEL);
1405
1406                 if (!q) {
1407                         QDIO_PRINT_ERR("kmalloc of q failed!\n");
1408                         goto out;
1409                 }
1410
1411                 memset(q,0,sizeof(struct qdio_q));
1412
1413                 q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL);
1414                 if (!q->slib) {
1415                         QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1416                         goto out;
1417                 }
1418
1419                 irq_ptr->input_qs[i]=q;
1420         }
1421
1422         for (i=0;i<no_output_qs;i++) {
1423                 q=kmalloc(sizeof(struct qdio_q),GFP_KERNEL);
1424
1425                 if (!q) {
1426                         goto out;
1427                 }
1428
1429                 memset(q,0,sizeof(struct qdio_q));
1430
1431                 q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL);
1432                 if (!q->slib) {
1433                         QDIO_PRINT_ERR("kmalloc of slib failed!\n");
1434                         goto out;
1435                 }
1436
1437                 irq_ptr->output_qs[i]=q;
1438         }
1439
1440         result=0;
1441 out:
1442         return result;
1443 }
1444
1445 static void
1446 qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev,
1447              int no_input_qs, int no_output_qs,
1448              qdio_handler_t *input_handler,
1449              qdio_handler_t *output_handler,
1450              unsigned long int_parm,int q_format,
1451              unsigned long flags,
1452              void **inbound_sbals_array,
1453              void **outbound_sbals_array)
1454 {
1455         struct qdio_q *q;
1456         int i,j;
1457         char dbf_text[20]; /* see qdio_initialize */
1458         void *ptr;
1459         int available;
1460
1461         sprintf(dbf_text,"qfqs%4x",cdev->private->irq);
1462         QDIO_DBF_TEXT0(0,setup,dbf_text);
1463         for (i=0;i<no_input_qs;i++) {
1464                 q=irq_ptr->input_qs[i];
1465
1466                 memset(q,0,((char*)&q->slib)-((char*)q));
1467                 sprintf(dbf_text,"in-q%4x",i);
1468                 QDIO_DBF_TEXT0(0,setup,dbf_text);
1469                 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1470
1471                 memset(q->slib,0,PAGE_SIZE);
1472                 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1473
1474                 available=0;
1475
1476                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1477                         q->sbal[j]=*(inbound_sbals_array++);
1478
1479                 q->queue_type=q_format;
1480                 q->int_parm=int_parm;
1481                 q->irq=irq_ptr->irq;
1482                 q->irq_ptr = irq_ptr;
1483                 q->cdev = cdev;
1484                 q->mask=1<<(31-i);
1485                 q->q_no=i;
1486                 q->is_input_q=1;
1487                 q->first_to_check=0;
1488                 q->last_move_ftc=0;
1489                 q->handler=input_handler;
1490                 q->dev_st_chg_ind=irq_ptr->dev_st_chg_ind;
1491
1492                 q->tasklet.data=(unsigned long)q;
1493                 /* q->is_thinint_q isn't valid at this time, but
1494                  * irq_ptr->is_thinint_irq is */
1495                 q->tasklet.func=(void(*)(unsigned long))
1496                         ((irq_ptr->is_thinint_irq)?&tiqdio_inbound_processing:
1497                          &qdio_inbound_processing);
1498
1499                 /* actually this is not used for inbound queues. yet. */
1500                 atomic_set(&q->busy_siga_counter,0);
1501                 q->timing.busy_start=0;
1502
1503 /*              for (j=0;j<QDIO_STATS_NUMBER;j++)
1504                         q->timing.last_transfer_times[j]=(qdio_get_micros()/
1505                                                           QDIO_STATS_NUMBER)*j;
1506                 q->timing.last_transfer_index=QDIO_STATS_NUMBER-1;
1507 */
1508
1509                 /* fill in slib */
1510                 if (i>0) irq_ptr->input_qs[i-1]->slib->nsliba=
1511                                  (unsigned long)(q->slib);
1512                 q->slib->sla=(unsigned long)(q->sl);
1513                 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1514
1515                 /* fill in sl */
1516                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1517                         q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1518
1519                 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1520                 ptr=(void*)q->sl;
1521                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1522                 ptr=(void*)&q->slsb;
1523                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1524                 ptr=(void*)q->sbal[0];
1525                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1526
1527                 /* fill in slsb */
1528                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) {
1529                         set_slsb(&q->slsb.acc.val[j],
1530                                  SLSB_P_INPUT_NOT_INIT);
1531 /*                      q->sbal[j]->element[1].sbalf.i1.key=QDIO_STORAGE_KEY;*/
1532                 }
1533         }
1534
1535         for (i=0;i<no_output_qs;i++) {
1536                 q=irq_ptr->output_qs[i];
1537                 memset(q,0,((char*)&q->slib)-((char*)q));
1538
1539                 sprintf(dbf_text,"outq%4x",i);
1540                 QDIO_DBF_TEXT0(0,setup,dbf_text);
1541                 QDIO_DBF_HEX0(0,setup,&q,sizeof(void*));
1542
1543                 memset(q->slib,0,PAGE_SIZE);
1544                 q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2);
1545
1546                 available=0;
1547
1548                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1549                         q->sbal[j]=*(outbound_sbals_array++);
1550
1551                 q->queue_type=q_format;
1552                 q->int_parm=int_parm;
1553                 q->is_input_q=0;
1554                 q->irq=irq_ptr->irq;
1555                 q->cdev = cdev;
1556                 q->irq_ptr = irq_ptr;
1557                 q->mask=1<<(31-i);
1558                 q->q_no=i;
1559                 q->first_to_check=0;
1560                 q->last_move_ftc=0;
1561                 q->handler=output_handler;
1562
1563                 q->tasklet.data=(unsigned long)q;
1564                 q->tasklet.func=(void(*)(unsigned long))
1565                         &qdio_outbound_processing;
1566
1567                 atomic_set(&q->busy_siga_counter,0);
1568                 q->timing.busy_start=0;
1569
1570                 /* fill in slib */
1571                 if (i>0) irq_ptr->output_qs[i-1]->slib->nsliba=
1572                                  (unsigned long)(q->slib);
1573                 q->slib->sla=(unsigned long)(q->sl);
1574                 q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]);
1575
1576                 /* fill in sl */
1577                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++)
1578                         q->sl->element[j].sbal=(unsigned long)(q->sbal[j]);
1579
1580                 QDIO_DBF_TEXT2(0,setup,"sl-sb-b0");
1581                 ptr=(void*)q->sl;
1582                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1583                 ptr=(void*)&q->slsb;
1584                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1585                 ptr=(void*)q->sbal[0];
1586                 QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*));
1587
1588                 /* fill in slsb */
1589                 for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) {
1590                         set_slsb(&q->slsb.acc.val[j],
1591                                  SLSB_P_OUTPUT_NOT_INIT);
1592 /*                      q->sbal[j]->element[1].sbalf.i1.key=QDIO_STORAGE_KEY;*/
1593                 }
1594         }
1595 }
1596
1597 static void
1598 qdio_fill_thresholds(struct qdio_irq *irq_ptr,
1599                      unsigned int no_input_qs,
1600                      unsigned int no_output_qs,
1601                      unsigned int min_input_threshold,
1602                      unsigned int max_input_threshold,
1603                      unsigned int min_output_threshold,
1604                      unsigned int max_output_threshold)
1605 {
1606         int i;
1607         struct qdio_q *q;
1608
1609         for (i=0;i<no_input_qs;i++) {
1610                 q=irq_ptr->input_qs[i];
1611                 q->timing.threshold=max_input_threshold;
1612 /*              for (j=0;j<QDIO_STATS_CLASSES;j++) {
1613                         q->threshold_classes[j].threshold=
1614                                 min_input_threshold+
1615                                 (max_input_threshold-min_input_threshold)/
1616                                 QDIO_STATS_CLASSES;
1617                 }
1618                 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1619         }
1620         for (i=0;i<no_output_qs;i++) {
1621                 q=irq_ptr->output_qs[i];
1622                 q->timing.threshold=max_output_threshold;
1623 /*              for (j=0;j<QDIO_STATS_CLASSES;j++) {
1624                         q->threshold_classes[j].threshold=
1625                                 min_output_threshold+
1626                                 (max_output_threshold-min_output_threshold)/
1627                                 QDIO_STATS_CLASSES;
1628                 }
1629                 qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/
1630         }
1631 }
1632
1633 static int
1634 tiqdio_thinint_handler(void)
1635 {
1636         QDIO_DBF_TEXT4(0,trace,"thin_int");
1637
1638 #ifdef QDIO_PERFORMANCE_STATS
1639         perf_stats.thinints++;
1640         perf_stats.start_time_inbound=NOW;
1641 #endif /* QDIO_PERFORMANCE_STATS */
1642
1643         /* SVS only when needed:
1644          * issue SVS to benefit from iqdio interrupt avoidance
1645          * (SVS clears AISOI)*/
1646         if (!omit_svs)
1647                 tiqdio_clear_global_summary();
1648
1649         tiqdio_inbound_checks();
1650         return 0;
1651 }
1652
1653 static void
1654 qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state)
1655 {
1656         int i;
1657 #ifdef CONFIG_QDIO_DEBUG
1658         char dbf_text[15];
1659
1660         QDIO_DBF_TEXT5(0,trace,"newstate");
1661         sprintf(dbf_text,"%4x%4x",irq_ptr->irq,state);
1662         QDIO_DBF_TEXT5(0,trace,dbf_text);
1663 #endif /* CONFIG_QDIO_DEBUG */
1664
1665         irq_ptr->state=state;
1666         for (i=0;i<irq_ptr->no_input_qs;i++)
1667                 irq_ptr->input_qs[i]->state=state;
1668         for (i=0;i<irq_ptr->no_output_qs;i++)
1669                 irq_ptr->output_qs[i]->state=state;
1670         mb();
1671 }
1672
1673 static inline void
1674 qdio_irq_check_sense(int irq, struct irb *irb)
1675 {
1676         char dbf_text[15];
1677
1678         if (irb->esw.esw0.erw.cons) {
1679                 sprintf(dbf_text,"sens%4x",irq);
1680                 QDIO_DBF_TEXT2(1,trace,dbf_text);
1681                 QDIO_DBF_HEX0(0,sense,irb,QDIO_DBF_SENSE_LEN);
1682
1683                 QDIO_PRINT_WARN("sense data available on qdio channel.\n");
1684                 HEXDUMP16(WARN,"irb: ",irb);
1685                 HEXDUMP16(WARN,"sense data: ",irb->ecw);
1686         }
1687
1688 }
1689
1690 static inline void
1691 qdio_handle_pci(struct qdio_irq *irq_ptr)
1692 {
1693         int i;
1694         struct qdio_q *q;
1695
1696 #ifdef QDIO_PERFORMANCE_STATS
1697         perf_stats.pcis++;
1698         perf_stats.start_time_inbound=NOW;
1699 #endif /* QDIO_PERFORMANCE_STATS */
1700         for (i=0;i<irq_ptr->no_input_qs;i++) {
1701                 q=irq_ptr->input_qs[i];
1702                 if (q->is_input_q&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT)
1703                         qdio_mark_q(q);
1704                 else {
1705 #ifdef QDIO_PERFORMANCE_STATS
1706                         perf_stats.tl_runs--;
1707 #endif /* QDIO_PERFORMANCE_STATS */
1708                         __qdio_inbound_processing(q);
1709                 }
1710         }
1711         if (!irq_ptr->hydra_gives_outbound_pcis)
1712                 return;
1713         for (i=0;i<irq_ptr->no_output_qs;i++) {
1714                 q=irq_ptr->output_qs[i];
1715 #ifdef QDIO_PERFORMANCE_STATS
1716                 perf_stats.tl_runs--;
1717 #endif /* QDIO_PERFORMANCE_STATS */
1718                 if (qdio_is_outbound_q_done(q))
1719                         continue;
1720                 if (!irq_ptr->sync_done_on_outb_pcis)
1721                         SYNC_MEMORY;
1722                 __qdio_outbound_processing(q);
1723         }
1724 }
1725
1726 static void qdio_establish_handle_irq(struct ccw_device*, int, int);
1727
1728 static inline void
1729 qdio_handle_activate_check(struct ccw_device *cdev, unsigned long intparm,
1730                            int cstat, int dstat)
1731 {
1732         struct qdio_irq *irq_ptr;
1733         struct qdio_q *q;
1734         char dbf_text[15];
1735
1736         irq_ptr = cdev->private->qdio_data;
1737
1738         QDIO_DBF_TEXT2(1, trace, "ick2");
1739         sprintf(dbf_text,"%s", cdev->dev.bus_id);
1740         QDIO_DBF_TEXT2(1,trace,dbf_text);
1741         QDIO_DBF_HEX2(0,trace,&intparm,sizeof(int));
1742         QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
1743         QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
1744         QDIO_PRINT_ERR("received check condition on activate " \
1745                        "queues on device %s (cs=x%x, ds=x%x).\n",
1746                        cdev->dev.bus_id, cstat, dstat);
1747         if (irq_ptr->no_input_qs) {
1748                 q=irq_ptr->input_qs[0];
1749         } else if (irq_ptr->no_output_qs) {
1750                 q=irq_ptr->output_qs[0];
1751         } else {
1752                 QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n",
1753                                cdev->dev.bus_id);
1754                 goto omit_handler_call;
1755         }
1756         q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION|
1757                    QDIO_STATUS_LOOK_FOR_ERROR,
1758                    0,0,0,-1,-1,q->int_parm);
1759 omit_handler_call:
1760         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_STOPPED);
1761
1762 }
1763
1764 static void
1765 qdio_call_shutdown(void *data)
1766 {
1767         struct ccw_device *cdev;
1768
1769         cdev = (struct ccw_device *)data;
1770         qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
1771         put_device(&cdev->dev);
1772 }
1773
1774 static void
1775 qdio_timeout_handler(struct ccw_device *cdev)
1776 {
1777         struct qdio_irq *irq_ptr;
1778         char dbf_text[15];
1779
1780         QDIO_DBF_TEXT2(0, trace, "qtoh");
1781         sprintf(dbf_text, "%s", cdev->dev.bus_id);
1782         QDIO_DBF_TEXT2(0, trace, dbf_text);
1783
1784         irq_ptr = cdev->private->qdio_data;
1785         sprintf(dbf_text, "state:%d", irq_ptr->state);
1786         QDIO_DBF_TEXT2(0, trace, dbf_text);
1787
1788         switch (irq_ptr->state) {
1789         case QDIO_IRQ_STATE_INACTIVE:
1790                 QDIO_PRINT_ERR("establish queues on irq %04x: timed out\n",
1791                                irq_ptr->irq);
1792                 QDIO_DBF_TEXT2(1,setup,"eq:timeo");
1793                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
1794                 break;
1795         case QDIO_IRQ_STATE_CLEANUP:
1796                 QDIO_PRINT_INFO("Did not get interrupt on cleanup, irq=0x%x.\n",
1797                                 irq_ptr->irq);
1798                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
1799                 break;
1800         case QDIO_IRQ_STATE_ESTABLISHED:
1801         case QDIO_IRQ_STATE_ACTIVE:
1802                 /* I/O has been terminated by common I/O layer. */
1803                 QDIO_PRINT_INFO("Queues on irq %04x killed by cio.\n",
1804                                 irq_ptr->irq);
1805                 QDIO_DBF_TEXT2(1, trace, "cio:term");
1806                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
1807                 if (get_device(&cdev->dev)) {
1808                         /* Can't call shutdown from interrupt context. */
1809                         PREPARE_WORK(&cdev->private->kick_work,
1810                                      qdio_call_shutdown, (void *)cdev);
1811                         queue_work(ccw_device_work, &cdev->private->kick_work);
1812                 }
1813                 break;
1814         default:
1815                 BUG();
1816         }
1817         ccw_device_set_timeout(cdev, 0);
1818         wake_up(&cdev->private->wait_q);
1819 }
1820
1821 static void
1822 qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
1823 {
1824         struct qdio_irq *irq_ptr;
1825         int cstat,dstat;
1826         char dbf_text[15];
1827
1828 #ifdef CONFIG_QDIO_DEBUG
1829         QDIO_DBF_TEXT4(0, trace, "qint");
1830         sprintf(dbf_text, "%s", cdev->dev.bus_id);
1831         QDIO_DBF_TEXT4(0, trace, dbf_text);
1832 #endif /* CONFIG_QDIO_DEBUG */
1833
1834         if (!intparm) {
1835                 QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \
1836                                   "handler, device %s\n", cdev->dev.bus_id);
1837                 return;
1838         }
1839
1840         irq_ptr = cdev->private->qdio_data;
1841         if (!irq_ptr) {
1842                 QDIO_DBF_TEXT2(1, trace, "uint");
1843                 sprintf(dbf_text,"%s", cdev->dev.bus_id);
1844                 QDIO_DBF_TEXT2(1,trace,dbf_text);
1845                 QDIO_PRINT_ERR("received interrupt on unused device %s!\n",
1846                                cdev->dev.bus_id);
1847                 return;
1848         }
1849
1850         if (IS_ERR(irb)) {
1851                 /* Currently running i/o is in error. */
1852                 switch (PTR_ERR(irb)) {
1853                 case -EIO:
1854                         QDIO_PRINT_ERR("i/o error on device %s\n",
1855                                        cdev->dev.bus_id);
1856                         return;
1857                 case -ETIMEDOUT:
1858                         qdio_timeout_handler(cdev);
1859                         return;
1860                 default:
1861                         QDIO_PRINT_ERR("unknown error state %ld on device %s\n",
1862                                        PTR_ERR(irb), cdev->dev.bus_id);
1863                         return;
1864                 }
1865         }
1866
1867         qdio_irq_check_sense(irq_ptr->irq, irb);
1868
1869 #ifdef CONFIG_QDIO_DEBUG
1870         sprintf(dbf_text, "state:%d", irq_ptr->state);
1871         QDIO_DBF_TEXT4(0, trace, dbf_text);
1872 #endif /* CONFIG_QDIO_DEBUG */
1873
1874         cstat = irb->scsw.cstat;
1875         dstat = irb->scsw.dstat;
1876
1877         switch (irq_ptr->state) {
1878         case QDIO_IRQ_STATE_INACTIVE:
1879                 qdio_establish_handle_irq(cdev, cstat, dstat);
1880                 break;
1881
1882         case QDIO_IRQ_STATE_CLEANUP:
1883                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
1884                 break;
1885
1886         case QDIO_IRQ_STATE_ESTABLISHED:
1887         case QDIO_IRQ_STATE_ACTIVE:
1888                 if (cstat & SCHN_STAT_PCI) {
1889                         qdio_handle_pci(irq_ptr);
1890                         break;
1891                 }
1892
1893                 if ((cstat&~SCHN_STAT_PCI)||dstat) {
1894                         qdio_handle_activate_check(cdev, intparm, cstat, dstat);
1895                         break;
1896                 }
1897         default:
1898                 QDIO_PRINT_ERR("got interrupt for queues in state %d on " \
1899                                "device %s?!\n",
1900                                irq_ptr->state, cdev->dev.bus_id);
1901         }
1902         wake_up(&cdev->private->wait_q);
1903
1904 }
1905
1906 int
1907 qdio_synchronize(struct ccw_device *cdev, unsigned int flags,
1908                  unsigned int queue_number)
1909 {
1910         int cc;
1911         struct qdio_q *q;
1912         struct qdio_irq *irq_ptr;
1913         void *ptr;
1914 #ifdef CONFIG_QDIO_DEBUG
1915         char dbf_text[15]="SyncXXXX";
1916 #endif
1917
1918         irq_ptr = cdev->private->qdio_data;
1919         if (!irq_ptr)
1920                 return -ENODEV;
1921
1922 #ifdef CONFIG_QDIO_DEBUG
1923         *((int*)(&dbf_text[4])) = irq_ptr->irq;
1924         QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
1925         *((int*)(&dbf_text[0]))=flags;
1926         *((int*)(&dbf_text[4]))=queue_number;
1927         QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN);
1928 #endif /* CONFIG_QDIO_DEBUG */
1929
1930         if (flags&QDIO_FLAG_SYNC_INPUT) {
1931                 q=irq_ptr->input_qs[queue_number];
1932                 if (!q)
1933                         return -EINVAL;
1934                 cc = do_siga_sync(q->irq, 0, q->mask);
1935         } else if (flags&QDIO_FLAG_SYNC_OUTPUT) {
1936                 q=irq_ptr->output_qs[queue_number];
1937                 if (!q)
1938                         return -EINVAL;
1939                 cc = do_siga_sync(q->irq, q->mask, 0);
1940         } else
1941                 return -EINVAL;
1942
1943         ptr=&cc;
1944         if (cc)
1945                 QDIO_DBF_HEX3(0,trace,&ptr,sizeof(int));
1946
1947         return cc;
1948 }
1949
1950 static unsigned char
1951 qdio_check_siga_needs(int sch)
1952 {
1953         int result;
1954         unsigned char qdioac;
1955
1956         struct {
1957                 struct chsc_header request;
1958                 u16 reserved1;
1959                 u16 first_sch;
1960                 u16 reserved2;
1961                 u16 last_sch;
1962                 u32 reserved3;
1963                 struct chsc_header response;
1964                 u32 reserved4;
1965                 u8  flags;
1966                 u8  reserved5;
1967                 u16 sch;
1968                 u8  qfmt;
1969                 u8  reserved6;
1970                 u8  qdioac;
1971                 u8  sch_class;
1972                 u8  reserved7;
1973                 u8  icnt;
1974                 u8  reserved8;
1975                 u8  ocnt;
1976         } *ssqd_area;
1977
1978         ssqd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
1979         if (!ssqd_area) {
1980                 QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \
1981                                 "SIGAs for sch x%x.\n", sch);
1982                 return CHSC_FLAG_SIGA_INPUT_NECESSARY ||
1983                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
1984                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
1985         }
1986         ssqd_area->request = (struct chsc_header) {
1987                 .length = 0x0010,
1988                 .code   = 0x0024,
1989         };
1990
1991         ssqd_area->first_sch = sch;
1992         ssqd_area->last_sch = sch;
1993
1994         result=chsc(ssqd_area);
1995
1996         if (result) {
1997                 QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \
1998                                 "SIGAs for sch x%x.\n",
1999                                 result,sch);
2000                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
2001                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2002                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2003                 goto out;
2004         }
2005
2006         if (ssqd_area->response.code != QDIO_CHSC_RESPONSE_CODE_OK) {
2007                 QDIO_PRINT_WARN("response upon checking SIGA needs " \
2008                                 "is 0x%x. Using all SIGAs for sch x%x.\n",
2009                                 ssqd_area->response.code, sch);
2010                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY ||
2011                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY ||
2012                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */
2013                 goto out;
2014         }
2015         if (!(ssqd_area->flags & CHSC_FLAG_QDIO_CAPABILITY) ||
2016             !(ssqd_area->flags & CHSC_FLAG_VALIDITY) ||
2017             (ssqd_area->sch != sch)) {
2018                 QDIO_PRINT_WARN("huh? problems checking out sch x%x... " \
2019                                 "using all SIGAs.\n",sch);
2020                 qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY |
2021                         CHSC_FLAG_SIGA_OUTPUT_NECESSARY |
2022                         CHSC_FLAG_SIGA_SYNC_NECESSARY; /* worst case */
2023                 goto out;
2024         }
2025
2026         qdioac = ssqd_area->qdioac;
2027 out:
2028         free_page ((unsigned long) ssqd_area);
2029         return qdioac;
2030 }
2031
2032 static unsigned int
2033 tiqdio_check_chsc_availability(void)
2034 {
2035         char dbf_text[15];
2036
2037         if (!css_characteristics_avail)
2038                 return -EIO;
2039
2040         /* Check for bit 41. */
2041         if (!css_general_characteristics.aif) {
2042                 QDIO_PRINT_WARN("Adapter interruption facility not " \
2043                                 "installed.\n");
2044                 return -ENOENT;
2045         }
2046         /* Check for bits 107 and 108. */
2047         if (!css_chsc_characteristics.scssc ||
2048             !css_chsc_characteristics.scsscf) {
2049                 QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \
2050                                 "not available.\n");
2051                 return -ENOENT;
2052         }
2053
2054         /* Check for OSA/FCP thin interrupts (bit 67). */
2055         hydra_thinints = css_general_characteristics.aif_osa;
2056         sprintf(dbf_text,"hydrati%1x", hydra_thinints);
2057         QDIO_DBF_TEXT0(0,setup,dbf_text);
2058
2059         /* Check for aif time delay disablement fac (bit 56). If installed,
2060          * omit svs even under lpar (good point by rick again) */
2061         omit_svs = css_general_characteristics.aif_tdd;
2062         sprintf(dbf_text,"omitsvs%1x", omit_svs);
2063         QDIO_DBF_TEXT0(0,setup,dbf_text);
2064         return 0;
2065 }
2066
2067
2068 static unsigned int
2069 tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero)
2070 {
2071         unsigned long real_addr_local_summary_bit;
2072         unsigned long real_addr_dev_st_chg_ind;
2073         void *ptr;
2074         char dbf_text[15];
2075
2076         unsigned int resp_code;
2077         int result;
2078
2079         struct {
2080                 struct chsc_header request;
2081                 u16 operation_code;
2082                 u16 reserved1;
2083                 u32 reserved2;
2084                 u32 reserved3;
2085                 u64 summary_indicator_addr;
2086                 u64 subchannel_indicator_addr;
2087                 u32 ks:4;
2088                 u32 kc:4;
2089                 u32 reserved4:21;
2090                 u32 isc:3;
2091                 u32 reserved5[2];
2092                 u32 subsystem_id;
2093                 u32 reserved6[1004];
2094                 struct chsc_header response;
2095                 u32 reserved7;
2096         } *scssc_area;
2097
2098         if (!irq_ptr->is_thinint_irq)
2099                 return -ENODEV;
2100
2101         if (reset_to_zero) {
2102                 real_addr_local_summary_bit=0;
2103                 real_addr_dev_st_chg_ind=0;
2104         } else {
2105                 real_addr_local_summary_bit=
2106                         virt_to_phys((volatile void *)indicators);
2107                 real_addr_dev_st_chg_ind=
2108                         virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind);
2109         }
2110
2111         scssc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
2112         if (!scssc_area) {
2113                 QDIO_PRINT_WARN("No memory for setting indicators on " \
2114                                 "subchannel x%x.\n", irq_ptr->irq);
2115                 return -ENOMEM;
2116         }
2117         scssc_area->request = (struct chsc_header) {
2118                 .length = 0x0fe0,
2119                 .code   = 0x0021,
2120         };
2121         scssc_area->operation_code = 0;
2122
2123         scssc_area->summary_indicator_addr = real_addr_local_summary_bit;
2124         scssc_area->subchannel_indicator_addr = real_addr_dev_st_chg_ind;
2125         scssc_area->ks = QDIO_STORAGE_KEY;
2126         scssc_area->kc = QDIO_STORAGE_KEY;
2127         scssc_area->isc = TIQDIO_THININT_ISC;
2128         scssc_area->subsystem_id = (1<<16) + irq_ptr->irq;
2129
2130         result = chsc(scssc_area);
2131         if (result) {
2132                 QDIO_PRINT_WARN("could not set indicators on irq x%x, " \
2133                                 "cc=%i.\n",irq_ptr->irq,result);
2134                 result = -EIO;
2135                 goto out;
2136         }
2137
2138         resp_code = scssc_area->response.code;
2139         if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2140                 QDIO_PRINT_WARN("response upon setting indicators " \
2141                                 "is 0x%x.\n",resp_code);
2142                 sprintf(dbf_text,"sidR%4x",resp_code);
2143                 QDIO_DBF_TEXT1(0,trace,dbf_text);
2144                 QDIO_DBF_TEXT1(0,setup,dbf_text);
2145                 ptr=&scssc_area->response;
2146                 QDIO_DBF_HEX2(1,setup,&ptr,QDIO_DBF_SETUP_LEN);
2147                 result = -EIO;
2148                 goto out;
2149         }
2150
2151         QDIO_DBF_TEXT2(0,setup,"setscind");
2152         QDIO_DBF_HEX2(0,setup,&real_addr_local_summary_bit,
2153                       sizeof(unsigned long));
2154         QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long));
2155         result = 0;
2156 out:
2157         free_page ((unsigned long) scssc_area);
2158         return result;
2159
2160 }
2161
2162 static unsigned int
2163 tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target)
2164 {
2165         unsigned int resp_code;
2166         int result;
2167         void *ptr;
2168         char dbf_text[15];
2169
2170         struct {
2171                 struct chsc_header request;
2172                 u16 operation_code;
2173                 u16 reserved1;
2174                 u32 reserved2;
2175                 u32 reserved3;
2176                 u32 reserved4[2];
2177                 u32 delay_target;
2178                 u32 reserved5[1009];
2179                 struct chsc_header response;
2180                 u32 reserved6;
2181         } *scsscf_area;
2182
2183         if (!irq_ptr->is_thinint_irq)
2184                 return -ENODEV;
2185
2186         scsscf_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
2187         if (!scsscf_area) {
2188                 QDIO_PRINT_WARN("No memory for setting delay target on " \
2189                                 "subchannel x%x.\n", irq_ptr->irq);
2190                 return -ENOMEM;
2191         }
2192         scsscf_area->request = (struct chsc_header) {
2193                 .length = 0x0fe0,
2194                 .code   = 0x1027,
2195         };
2196
2197         scsscf_area->delay_target = delay_target<<16;
2198
2199         result=chsc(scsscf_area);
2200         if (result) {
2201                 QDIO_PRINT_WARN("could not set delay target on irq x%x, " \
2202                                 "cc=%i. Continuing.\n",irq_ptr->irq,result);
2203                 result = -EIO;
2204                 goto out;
2205         }
2206
2207         resp_code = scsscf_area->response.code;
2208         if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) {
2209                 QDIO_PRINT_WARN("response upon setting delay target " \
2210                                 "is 0x%x. Continuing.\n",resp_code);
2211                 sprintf(dbf_text,"sdtR%4x",resp_code);
2212                 QDIO_DBF_TEXT1(0,trace,dbf_text);
2213                 QDIO_DBF_TEXT1(0,setup,dbf_text);
2214                 ptr=&scsscf_area->response;
2215                 QDIO_DBF_HEX2(1,trace,&ptr,QDIO_DBF_TRACE_LEN);
2216         }
2217         QDIO_DBF_TEXT2(0,trace,"delytrgt");
2218         QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long));
2219         result = 0; /* not critical */
2220 out:
2221         free_page ((unsigned long) scsscf_area);
2222         return result;
2223 }
2224
2225 int
2226 qdio_cleanup(struct ccw_device *cdev, int how)
2227 {
2228         struct qdio_irq *irq_ptr;
2229         char dbf_text[15];
2230         int rc;
2231
2232         irq_ptr = cdev->private->qdio_data;
2233         if (!irq_ptr)
2234                 return -ENODEV;
2235
2236         sprintf(dbf_text,"qcln%4x",irq_ptr->irq);
2237         QDIO_DBF_TEXT1(0,trace,dbf_text);
2238         QDIO_DBF_TEXT0(0,setup,dbf_text);
2239
2240         rc = qdio_shutdown(cdev, how);
2241         if ((rc == 0) || (rc == -EINPROGRESS))
2242                 rc = qdio_free(cdev);
2243         return rc;
2244 }
2245
2246 int
2247 qdio_shutdown(struct ccw_device *cdev, int how)
2248 {
2249         struct qdio_irq *irq_ptr;
2250         int i;
2251         int result = 0;
2252         int rc;
2253         unsigned long flags;
2254         int timeout;
2255         char dbf_text[15];
2256
2257         irq_ptr = cdev->private->qdio_data;
2258         if (!irq_ptr)
2259                 return -ENODEV;
2260
2261         down(&irq_ptr->setting_up_sema);
2262
2263         sprintf(dbf_text,"qsqs%4x",irq_ptr->irq);
2264         QDIO_DBF_TEXT1(0,trace,dbf_text);
2265         QDIO_DBF_TEXT0(0,setup,dbf_text);
2266
2267         /* mark all qs as uninteresting */
2268         for (i=0;i<irq_ptr->no_input_qs;i++)
2269                 atomic_set(&irq_ptr->input_qs[i]->is_in_shutdown,1);
2270
2271         for (i=0;i<irq_ptr->no_output_qs;i++)
2272                 atomic_set(&irq_ptr->output_qs[i]->is_in_shutdown,1);
2273
2274         tasklet_kill(&tiqdio_tasklet);
2275
2276         for (i=0;i<irq_ptr->no_input_qs;i++) {
2277                 qdio_unmark_q(irq_ptr->input_qs[i]);
2278                 tasklet_kill(&irq_ptr->input_qs[i]->tasklet);
2279                 wait_event_interruptible_timeout(cdev->private->wait_q,
2280                                                  !atomic_read(&irq_ptr->
2281                                                               input_qs[i]->
2282                                                               use_count),
2283                                                  QDIO_NO_USE_COUNT_TIMEOUT);
2284                 if (atomic_read(&irq_ptr->input_qs[i]->use_count))
2285                         result=-EINPROGRESS;
2286         }
2287
2288         for (i=0;i<irq_ptr->no_output_qs;i++) {
2289                 tasklet_kill(&irq_ptr->output_qs[i]->tasklet);
2290                 wait_event_interruptible_timeout(cdev->private->wait_q,
2291                                                  !atomic_read(&irq_ptr->
2292                                                               output_qs[i]->
2293                                                               use_count),
2294                                                  QDIO_NO_USE_COUNT_TIMEOUT);
2295                 if (atomic_read(&irq_ptr->output_qs[i]->use_count))
2296                         result=-EINPROGRESS;
2297         }
2298
2299         /* cleanup subchannel */
2300         spin_lock_irqsave(get_ccwdev_lock(cdev),flags);
2301         if (how&QDIO_FLAG_CLEANUP_USING_CLEAR) {
2302                 rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP);
2303                 timeout=QDIO_CLEANUP_CLEAR_TIMEOUT;
2304         } else if (how&QDIO_FLAG_CLEANUP_USING_HALT) {
2305                 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2306                 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2307         } else { /* default behaviour */
2308                 rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
2309                 timeout=QDIO_CLEANUP_HALT_TIMEOUT;
2310         }
2311         if (rc == -ENODEV) {
2312                 /* No need to wait for device no longer present. */
2313                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2314                 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2315         } else if (rc == 0) {
2316                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP);
2317                 ccw_device_set_timeout(cdev, timeout);
2318                 spin_unlock_irqrestore(get_ccwdev_lock(cdev),flags);
2319
2320                 wait_event(cdev->private->wait_q,
2321                            irq_ptr->state == QDIO_IRQ_STATE_INACTIVE ||
2322                            irq_ptr->state == QDIO_IRQ_STATE_ERR);
2323         } else {
2324                 QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for "
2325                                 "device %s\n", result, cdev->dev.bus_id);
2326                 spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
2327                 result = rc;
2328                 goto out;
2329         }
2330         if (irq_ptr->is_thinint_irq) {
2331                 qdio_put_indicator((__u32*)irq_ptr->dev_st_chg_ind);
2332                 tiqdio_set_subchannel_ind(irq_ptr,1);
2333                 /* reset adapter interrupt indicators */
2334         }
2335
2336         /* exchange int handlers, if necessary */
2337         if ((void*)cdev->handler == (void*)qdio_handler)
2338                 cdev->handler=irq_ptr->original_int_handler;
2339
2340         /* Ignore errors. */
2341         qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
2342         ccw_device_set_timeout(cdev, 0);
2343 out:
2344         up(&irq_ptr->setting_up_sema);
2345         return result;
2346 }
2347
2348 int
2349 qdio_free(struct ccw_device *cdev)
2350 {
2351         struct qdio_irq *irq_ptr;
2352         char dbf_text[15];
2353
2354         irq_ptr = cdev->private->qdio_data;
2355         if (!irq_ptr)
2356                 return -ENODEV;
2357
2358         down(&irq_ptr->setting_up_sema);
2359
2360         sprintf(dbf_text,"qfqs%4x",irq_ptr->irq);
2361         QDIO_DBF_TEXT1(0,trace,dbf_text);
2362         QDIO_DBF_TEXT0(0,setup,dbf_text);
2363
2364         cdev->private->qdio_data = 0;
2365
2366         up(&irq_ptr->setting_up_sema);
2367
2368         qdio_release_irq_memory(irq_ptr);
2369         module_put(THIS_MODULE);
2370         return 0;
2371 }
2372
2373 static inline void
2374 qdio_allocate_do_dbf(struct qdio_initialize *init_data)
2375 {
2376         char dbf_text[20]; /* if a printf printed out more than 8 chars */
2377
2378         sprintf(dbf_text,"qfmt:%x",init_data->q_format);
2379         QDIO_DBF_TEXT0(0,setup,dbf_text);
2380         QDIO_DBF_HEX0(0,setup,init_data->adapter_name,8);
2381         sprintf(dbf_text,"qpff%4x",init_data->qib_param_field_format);
2382         QDIO_DBF_TEXT0(0,setup,dbf_text);
2383         QDIO_DBF_HEX0(0,setup,&init_data->qib_param_field,sizeof(char*));
2384         QDIO_DBF_HEX0(0,setup,&init_data->input_slib_elements,sizeof(long*));
2385         QDIO_DBF_HEX0(0,setup,&init_data->output_slib_elements,sizeof(long*));
2386         sprintf(dbf_text,"miit%4x",init_data->min_input_threshold);
2387         QDIO_DBF_TEXT0(0,setup,dbf_text);
2388         sprintf(dbf_text,"mait%4x",init_data->max_input_threshold);
2389         QDIO_DBF_TEXT0(0,setup,dbf_text);
2390         sprintf(dbf_text,"miot%4x",init_data->min_output_threshold);
2391         QDIO_DBF_TEXT0(0,setup,dbf_text);
2392         sprintf(dbf_text,"maot%4x",init_data->max_output_threshold);
2393         QDIO_DBF_TEXT0(0,setup,dbf_text);
2394         sprintf(dbf_text,"niq:%4x",init_data->no_input_qs);
2395         QDIO_DBF_TEXT0(0,setup,dbf_text);
2396         sprintf(dbf_text,"noq:%4x",init_data->no_output_qs);
2397         QDIO_DBF_TEXT0(0,setup,dbf_text);
2398         QDIO_DBF_HEX0(0,setup,&init_data->input_handler,sizeof(void*));
2399         QDIO_DBF_HEX0(0,setup,&init_data->output_handler,sizeof(void*));
2400         QDIO_DBF_HEX0(0,setup,&init_data->int_parm,sizeof(long));
2401         QDIO_DBF_HEX0(0,setup,&init_data->flags,sizeof(long));
2402         QDIO_DBF_HEX0(0,setup,&init_data->input_sbal_addr_array,sizeof(void*));
2403         QDIO_DBF_HEX0(0,setup,&init_data->output_sbal_addr_array,sizeof(void*));
2404 }
2405
2406 static inline void
2407 qdio_allocate_fill_input_desc(struct qdio_irq *irq_ptr, int i, int iqfmt)
2408 {
2409         irq_ptr->input_qs[i]->is_iqdio_q = iqfmt;
2410         irq_ptr->input_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2411
2412         irq_ptr->qdr->qdf0[i].sliba=(unsigned long)(irq_ptr->input_qs[i]->slib);
2413
2414         irq_ptr->qdr->qdf0[i].sla=(unsigned long)(irq_ptr->input_qs[i]->sl);
2415
2416         irq_ptr->qdr->qdf0[i].slsba=
2417                 (unsigned long)(&irq_ptr->input_qs[i]->slsb.acc.val[0]);
2418
2419         irq_ptr->qdr->qdf0[i].akey=QDIO_STORAGE_KEY;
2420         irq_ptr->qdr->qdf0[i].bkey=QDIO_STORAGE_KEY;
2421         irq_ptr->qdr->qdf0[i].ckey=QDIO_STORAGE_KEY;
2422         irq_ptr->qdr->qdf0[i].dkey=QDIO_STORAGE_KEY;
2423 }
2424
2425 static inline void
2426 qdio_allocate_fill_output_desc(struct qdio_irq *irq_ptr, int i,
2427                                int j, int iqfmt)
2428 {
2429         irq_ptr->output_qs[i]->is_iqdio_q = iqfmt;
2430         irq_ptr->output_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq;
2431
2432         irq_ptr->qdr->qdf0[i+j].sliba=(unsigned long)(irq_ptr->output_qs[i]->slib);
2433
2434         irq_ptr->qdr->qdf0[i+j].sla=(unsigned long)(irq_ptr->output_qs[i]->sl);
2435
2436         irq_ptr->qdr->qdf0[i+j].slsba=
2437                 (unsigned long)(&irq_ptr->output_qs[i]->slsb.acc.val[0]);
2438
2439         irq_ptr->qdr->qdf0[i+j].akey=QDIO_STORAGE_KEY;
2440         irq_ptr->qdr->qdf0[i+j].bkey=QDIO_STORAGE_KEY;
2441         irq_ptr->qdr->qdf0[i+j].ckey=QDIO_STORAGE_KEY;
2442         irq_ptr->qdr->qdf0[i+j].dkey=QDIO_STORAGE_KEY;
2443 }
2444
2445
2446 static inline void
2447 qdio_initialize_set_siga_flags_input(struct qdio_irq *irq_ptr)
2448 {
2449         int i;
2450
2451         for (i=0;i<irq_ptr->no_input_qs;i++) {
2452                 irq_ptr->input_qs[i]->siga_sync=
2453                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2454                 irq_ptr->input_qs[i]->siga_in=
2455                         irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2456                 irq_ptr->input_qs[i]->siga_out=
2457                         irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2458                 irq_ptr->input_qs[i]->siga_sync_done_on_thinints=
2459                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2460                 irq_ptr->input_qs[i]->hydra_gives_outbound_pcis=
2461                         irq_ptr->hydra_gives_outbound_pcis;
2462                 irq_ptr->input_qs[i]->siga_sync_done_on_outb_tis=
2463                         ((irq_ptr->qdioac&
2464                           (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2465                            CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2466                          (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2467                           CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2468
2469         }
2470 }
2471
2472 static inline void
2473 qdio_initialize_set_siga_flags_output(struct qdio_irq *irq_ptr)
2474 {
2475         int i;
2476
2477         for (i=0;i<irq_ptr->no_output_qs;i++) {
2478                 irq_ptr->output_qs[i]->siga_sync=
2479                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY;
2480                 irq_ptr->output_qs[i]->siga_in=
2481                         irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY;
2482                 irq_ptr->output_qs[i]->siga_out=
2483                         irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY;
2484                 irq_ptr->output_qs[i]->siga_sync_done_on_thinints=
2485                         irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS;
2486                 irq_ptr->output_qs[i]->hydra_gives_outbound_pcis=
2487                         irq_ptr->hydra_gives_outbound_pcis;
2488                 irq_ptr->output_qs[i]->siga_sync_done_on_outb_tis=
2489                         ((irq_ptr->qdioac&
2490                           (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2491                            CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))==
2492                          (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS|
2493                           CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS));
2494
2495         }
2496 }
2497
2498 static inline int
2499 qdio_establish_irq_check_for_errors(struct ccw_device *cdev, int cstat,
2500                                     int dstat)
2501 {
2502         char dbf_text[15];
2503         struct qdio_irq *irq_ptr;
2504
2505         irq_ptr = cdev->private->qdio_data;
2506
2507         if (cstat || (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END))) {
2508                 sprintf(dbf_text,"ick1%4x",irq_ptr->irq);
2509                 QDIO_DBF_TEXT2(1,trace,dbf_text);
2510                 QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int));
2511                 QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int));
2512                 QDIO_PRINT_ERR("received check condition on establish " \
2513                                "queues on irq 0x%x (cs=x%x, ds=x%x).\n",
2514                                irq_ptr->irq,cstat,dstat);
2515                 qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ERR);
2516         }
2517
2518         if (!(dstat & DEV_STAT_DEV_END)) {
2519                 QDIO_DBF_TEXT2(1,setup,"eq:no de");
2520                 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2521                 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2522                 QDIO_PRINT_ERR("establish queues on irq %04x: didn't get "
2523                                "device end: dstat=%02x, cstat=%02x\n",
2524                                irq_ptr->irq, dstat, cstat);
2525                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2526                 return 1;
2527         }
2528
2529         if (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) {
2530                 QDIO_DBF_TEXT2(1,setup,"eq:badio");
2531                 QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat));
2532                 QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat));
2533                 QDIO_PRINT_ERR("establish queues on irq %04x: got "
2534                                "the following devstat: dstat=%02x, "
2535                                "cstat=%02x\n",
2536                                irq_ptr->irq, dstat, cstat);
2537                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
2538                 return 1;
2539         }
2540         return 0;
2541 }
2542
2543 static void
2544 qdio_establish_handle_irq(struct ccw_device *cdev, int cstat, int dstat)
2545 {
2546         struct qdio_irq *irq_ptr;
2547         char dbf_text[15];
2548
2549         irq_ptr = cdev->private->qdio_data;
2550
2551         sprintf(dbf_text,"qehi%4x",cdev->private->irq);
2552         QDIO_DBF_TEXT0(0,setup,dbf_text);
2553         QDIO_DBF_TEXT0(0,trace,dbf_text);
2554
2555         if (qdio_establish_irq_check_for_errors(cdev, cstat, dstat)) {
2556                 ccw_device_set_timeout(cdev, 0);
2557                 return;
2558         }
2559
2560         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ESTABLISHED);
2561         ccw_device_set_timeout(cdev, 0);
2562 }
2563
2564 int
2565 qdio_initialize(struct qdio_initialize *init_data)
2566 {
2567         int rc;
2568         char dbf_text[15];
2569
2570         sprintf(dbf_text,"qini%4x",init_data->cdev->private->irq);
2571         QDIO_DBF_TEXT0(0,setup,dbf_text);
2572         QDIO_DBF_TEXT0(0,trace,dbf_text);
2573
2574         rc = qdio_allocate(init_data);
2575         if (rc == 0) {
2576                 rc = qdio_establish(init_data);
2577                 if (rc != 0)
2578                         qdio_free(init_data->cdev);
2579         }
2580
2581         return rc;
2582 }
2583
2584
2585 int
2586 qdio_allocate(struct qdio_initialize *init_data)
2587 {
2588         struct qdio_irq *irq_ptr;
2589         char dbf_text[15];
2590
2591         sprintf(dbf_text,"qalc%4x",init_data->cdev->private->irq);
2592         QDIO_DBF_TEXT0(0,setup,dbf_text);
2593         QDIO_DBF_TEXT0(0,trace,dbf_text);
2594         if ( (init_data->no_input_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2595              (init_data->no_output_qs>QDIO_MAX_QUEUES_PER_IRQ) ||
2596              ((init_data->no_input_qs) && (!init_data->input_handler)) ||
2597              ((init_data->no_output_qs) && (!init_data->output_handler)) )
2598                 return -EINVAL;
2599
2600         if (!init_data->input_sbal_addr_array)
2601                 return -EINVAL;
2602
2603         if (!init_data->output_sbal_addr_array)
2604                 return -EINVAL;
2605
2606         qdio_allocate_do_dbf(init_data);
2607
2608         /* create irq */
2609         irq_ptr=kmalloc(sizeof(struct qdio_irq), GFP_KERNEL | GFP_DMA);
2610
2611         QDIO_DBF_TEXT0(0,setup,"irq_ptr:");
2612         QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*));
2613
2614         if (!irq_ptr) {
2615                 QDIO_PRINT_ERR("kmalloc of irq_ptr failed!\n");
2616                 return -ENOMEM;
2617         }
2618
2619         memset(irq_ptr,0,sizeof(struct qdio_irq));
2620
2621         init_MUTEX(&irq_ptr->setting_up_sema);
2622
2623         irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA);
2624         if (!(irq_ptr->qdr)) {
2625                 kfree(irq_ptr);
2626                 QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n");
2627                 return -ENOMEM;
2628         }
2629         QDIO_DBF_TEXT0(0,setup,"qdr:");
2630         QDIO_DBF_HEX0(0,setup,&irq_ptr->qdr,sizeof(void*));
2631
2632         if (qdio_alloc_qs(irq_ptr,
2633                           init_data->no_input_qs,
2634                           init_data->no_output_qs)) {
2635                 qdio_release_irq_memory(irq_ptr);
2636                 return -ENOMEM;
2637         }
2638
2639         init_data->cdev->private->qdio_data = irq_ptr;
2640
2641         qdio_set_state(irq_ptr,QDIO_IRQ_STATE_INACTIVE);
2642
2643         return 0;
2644 }
2645
2646 int qdio_fill_irq(struct qdio_initialize *init_data)
2647 {
2648         int i;
2649         char dbf_text[15];
2650         struct ciw *ciw;
2651         int is_iqdio;
2652         struct qdio_irq *irq_ptr;
2653
2654         irq_ptr = init_data->cdev->private->qdio_data;
2655
2656         memset(irq_ptr,0,((char*)&irq_ptr->qdr)-((char*)irq_ptr));
2657
2658         /* wipes qib.ac, required by ar7063 */
2659         memset(irq_ptr->qdr,0,sizeof(struct qdr));
2660
2661         irq_ptr->int_parm=init_data->int_parm;
2662
2663         irq_ptr->irq = init_data->cdev->private->irq;
2664         irq_ptr->no_input_qs=init_data->no_input_qs;
2665         irq_ptr->no_output_qs=init_data->no_output_qs;
2666
2667         if (init_data->q_format==QDIO_IQDIO_QFMT) {
2668                 irq_ptr->is_iqdio_irq=1;
2669                 irq_ptr->is_thinint_irq=1;
2670         } else {
2671                 irq_ptr->is_iqdio_irq=0;
2672                 irq_ptr->is_thinint_irq=hydra_thinints;
2673         }
2674         sprintf(dbf_text,"is_i_t%1x%1x",
2675                 irq_ptr->is_iqdio_irq,irq_ptr->is_thinint_irq);
2676         QDIO_DBF_TEXT2(0,setup,dbf_text);
2677
2678         if (irq_ptr->is_thinint_irq) {
2679                 irq_ptr->dev_st_chg_ind=qdio_get_indicator();
2680                 QDIO_DBF_HEX1(0,setup,&irq_ptr->dev_st_chg_ind,sizeof(void*));
2681                 if (!irq_ptr->dev_st_chg_ind) {
2682                         QDIO_PRINT_WARN("no indicator location available " \
2683                                         "for irq 0x%x\n",irq_ptr->irq);
2684                         qdio_release_irq_memory(irq_ptr);
2685                         return -ENOBUFS;
2686                 }
2687         }
2688
2689         /* defaults */
2690         irq_ptr->equeue.cmd=DEFAULT_ESTABLISH_QS_CMD;
2691         irq_ptr->equeue.count=DEFAULT_ESTABLISH_QS_COUNT;
2692         irq_ptr->aqueue.cmd=DEFAULT_ACTIVATE_QS_CMD;
2693         irq_ptr->aqueue.count=DEFAULT_ACTIVATE_QS_COUNT;
2694
2695         qdio_fill_qs(irq_ptr, init_data->cdev,
2696                      init_data->no_input_qs,
2697                      init_data->no_output_qs,
2698                      init_data->input_handler,
2699                      init_data->output_handler,init_data->int_parm,
2700                      init_data->q_format,init_data->flags,
2701                      init_data->input_sbal_addr_array,
2702                      init_data->output_sbal_addr_array);
2703
2704         if (!try_module_get(THIS_MODULE)) {
2705                 QDIO_PRINT_CRIT("try_module_get() failed!\n");
2706                 qdio_release_irq_memory(irq_ptr);
2707                 return -EINVAL;
2708         }
2709
2710         qdio_fill_thresholds(irq_ptr,init_data->no_input_qs,
2711                              init_data->no_output_qs,
2712                              init_data->min_input_threshold,
2713                              init_data->max_input_threshold,
2714                              init_data->min_output_threshold,
2715                              init_data->max_output_threshold);
2716
2717         /* fill in qdr */
2718         irq_ptr->qdr->qfmt=init_data->q_format;
2719         irq_ptr->qdr->iqdcnt=init_data->no_input_qs;
2720         irq_ptr->qdr->oqdcnt=init_data->no_output_qs;
2721         irq_ptr->qdr->iqdsz=sizeof(struct qdesfmt0)/4; /* size in words */
2722         irq_ptr->qdr->oqdsz=sizeof(struct qdesfmt0)/4;
2723
2724         irq_ptr->qdr->qiba=(unsigned long)&irq_ptr->qib;
2725         irq_ptr->qdr->qkey=QDIO_STORAGE_KEY;
2726
2727         /* fill in qib */
2728         irq_ptr->qib.qfmt=init_data->q_format;
2729         if (init_data->no_input_qs)
2730                 irq_ptr->qib.isliba=(unsigned long)(irq_ptr->input_qs[0]->slib);
2731         if (init_data->no_output_qs)
2732                 irq_ptr->qib.osliba=(unsigned long)(irq_ptr->output_qs[0]->slib);
2733         memcpy(irq_ptr->qib.ebcnam,init_data->adapter_name,8);
2734
2735         qdio_set_impl_params(irq_ptr,init_data->qib_param_field_format,
2736                              init_data->qib_param_field,
2737                              init_data->no_input_qs,
2738                              init_data->no_output_qs,
2739                              init_data->input_slib_elements,
2740                              init_data->output_slib_elements);
2741
2742         /* first input descriptors, then output descriptors */
2743         is_iqdio = (init_data->q_format == QDIO_IQDIO_QFMT) ? 1 : 0;
2744         for (i=0;i<init_data->no_input_qs;i++)
2745                 qdio_allocate_fill_input_desc(irq_ptr, i, is_iqdio);
2746
2747         for (i=0;i<init_data->no_output_qs;i++)
2748                 qdio_allocate_fill_output_desc(irq_ptr, i,
2749                                                init_data->no_input_qs,
2750                                                is_iqdio);
2751
2752         /* qdr, qib, sls, slsbs, slibs, sbales filled. */
2753
2754         /* get qdio commands */
2755         ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
2756         if (!ciw) {
2757                 QDIO_DBF_TEXT2(1,setup,"no eq");
2758                 QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. "
2759                                 "Trying to use default.\n");
2760         } else
2761                 irq_ptr->equeue = *ciw;
2762         ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
2763         if (!ciw) {
2764                 QDIO_DBF_TEXT2(1,setup,"no aq");
2765                 QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. "
2766                                 "Trying to use default.\n");
2767         } else
2768                 irq_ptr->aqueue = *ciw;
2769
2770         /* Set new interrupt handler. */
2771         irq_ptr->original_int_handler = init_data->cdev->handler;
2772         init_data->cdev->handler = qdio_handler;
2773
2774         return 0;
2775 }
2776
2777 int
2778 qdio_establish(struct qdio_initialize *init_data)
2779 {
2780         struct qdio_irq *irq_ptr;
2781         unsigned long saveflags;
2782         int result, result2;
2783         struct ccw_device *cdev;
2784         char dbf_text[20];
2785
2786         cdev=init_data->cdev;
2787         irq_ptr = cdev->private->qdio_data;
2788         if (!irq_ptr)
2789                 return -EINVAL;
2790
2791         if (cdev->private->state != DEV_STATE_ONLINE)
2792                 return -EINVAL;
2793
2794         down(&irq_ptr->setting_up_sema);
2795
2796         qdio_fill_irq(init_data);
2797
2798         /* the thinint CHSC stuff */
2799         if (irq_ptr->is_thinint_irq) {
2800
2801                 result = tiqdio_set_subchannel_ind(irq_ptr,0);
2802                 if (result) {
2803                         up(&irq_ptr->setting_up_sema);
2804                         qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2805                         return result;
2806                 }
2807                 tiqdio_set_delay_target(irq_ptr,TIQDIO_DELAY_TARGET);
2808         }
2809
2810         sprintf(dbf_text,"qest%4x",cdev->private->irq);
2811         QDIO_DBF_TEXT0(0,setup,dbf_text);
2812         QDIO_DBF_TEXT0(0,trace,dbf_text);
2813
2814         /* establish q */
2815         irq_ptr->ccw.cmd_code=irq_ptr->equeue.cmd;
2816         irq_ptr->ccw.flags=CCW_FLAG_SLI;
2817         irq_ptr->ccw.count=irq_ptr->equeue.count;
2818         irq_ptr->ccw.cda=QDIO_GET_ADDR(irq_ptr->qdr);
2819
2820         spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
2821
2822         ccw_device_set_options(cdev, 0);
2823         result=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
2824                                         QDIO_DOING_ESTABLISH,0, 0,
2825                                         QDIO_ESTABLISH_TIMEOUT);
2826         if (result) {
2827                 result2=ccw_device_start_timeout(cdev,&irq_ptr->ccw,
2828                                                  QDIO_DOING_ESTABLISH,0,0,
2829                                                  QDIO_ESTABLISH_TIMEOUT);
2830                 sprintf(dbf_text,"eq:io%4x",result);
2831                 QDIO_DBF_TEXT2(1,setup,dbf_text);
2832                 if (result2) {
2833                         sprintf(dbf_text,"eq:io%4x",result);
2834                         QDIO_DBF_TEXT2(1,setup,dbf_text);
2835                 }
2836                 QDIO_PRINT_WARN("establish queues on irq %04x: do_IO " \
2837                            "returned %i, next try returned %i\n",
2838                            irq_ptr->irq,result,result2);
2839                 result=result2;
2840                 if (result)
2841                         ccw_device_set_timeout(cdev, 0);
2842         }
2843
2844         spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
2845
2846         if (result) {
2847                 up(&irq_ptr->setting_up_sema);
2848                 qdio_shutdown(cdev,QDIO_FLAG_CLEANUP_USING_CLEAR);
2849                 return result;
2850         }
2851
2852         wait_event_interruptible_timeout(cdev->private->wait_q,
2853                  irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED ||
2854                  irq_ptr->state == QDIO_IRQ_STATE_ERR,
2855                  QDIO_ESTABLISH_TIMEOUT);
2856
2857         if (irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED)
2858                 result = 0;
2859         else {
2860                 up(&irq_ptr->setting_up_sema);
2861                 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2862                 return -EIO;
2863         }
2864
2865         irq_ptr->qdioac=qdio_check_siga_needs(irq_ptr->irq);
2866         /* if this gets set once, we're running under VM and can omit SVSes */
2867         if (irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY)
2868                 omit_svs=1;
2869
2870         sprintf(dbf_text,"qdioac%2x",irq_ptr->qdioac);
2871         QDIO_DBF_TEXT2(0,setup,dbf_text);
2872
2873         sprintf(dbf_text,"qib ac%2x",irq_ptr->qib.ac);
2874         QDIO_DBF_TEXT2(0,setup,dbf_text);
2875
2876         irq_ptr->hydra_gives_outbound_pcis=
2877                 irq_ptr->qib.ac&QIB_AC_OUTBOUND_PCI_SUPPORTED;
2878         irq_ptr->sync_done_on_outb_pcis=
2879                 irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS;
2880
2881         qdio_initialize_set_siga_flags_input(irq_ptr);
2882         qdio_initialize_set_siga_flags_output(irq_ptr);
2883
2884         up(&irq_ptr->setting_up_sema);
2885
2886         return result;
2887
2888 }
2889
2890 int
2891 qdio_activate(struct ccw_device *cdev, int flags)
2892 {
2893         struct qdio_irq *irq_ptr;
2894         int i,result=0,result2;
2895         unsigned long saveflags;
2896         char dbf_text[20]; /* see qdio_initialize */
2897
2898         irq_ptr = cdev->private->qdio_data;
2899         if (!irq_ptr)
2900                 return -ENODEV;
2901
2902         if (cdev->private->state != DEV_STATE_ONLINE)
2903                 return -EINVAL;
2904
2905         down(&irq_ptr->setting_up_sema);
2906         if (irq_ptr->state==QDIO_IRQ_STATE_INACTIVE) {
2907                 result=-EBUSY;
2908                 goto out;
2909         }
2910
2911         sprintf(dbf_text,"qact%4x", irq_ptr->irq);
2912         QDIO_DBF_TEXT2(0,setup,dbf_text);
2913         QDIO_DBF_TEXT2(0,trace,dbf_text);
2914
2915         /* activate q */
2916         irq_ptr->ccw.cmd_code=irq_ptr->aqueue.cmd;
2917         irq_ptr->ccw.flags=CCW_FLAG_SLI;
2918         irq_ptr->ccw.count=irq_ptr->aqueue.count;
2919         irq_ptr->ccw.cda=QDIO_GET_ADDR(0);
2920
2921         spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags);
2922
2923         ccw_device_set_timeout(cdev, 0);
2924         ccw_device_set_options(cdev, CCWDEV_REPORT_ALL);
2925         result=ccw_device_start(cdev,&irq_ptr->ccw,QDIO_DOING_ACTIVATE,
2926                                 0, DOIO_DENY_PREFETCH);
2927         if (result) {
2928                 result2=ccw_device_start(cdev,&irq_ptr->ccw,
2929                                          QDIO_DOING_ACTIVATE,0,0);
2930                 sprintf(dbf_text,"aq:io%4x",result);
2931                 QDIO_DBF_TEXT2(1,setup,dbf_text);
2932                 if (result2) {
2933                         sprintf(dbf_text,"aq:io%4x",result);
2934                         QDIO_DBF_TEXT2(1,setup,dbf_text);
2935                 }
2936                 QDIO_PRINT_WARN("activate queues on irq %04x: do_IO " \
2937                            "returned %i, next try returned %i\n",
2938                            irq_ptr->irq,result,result2);
2939                 result=result2;
2940         }
2941
2942         spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags);
2943         if (result)
2944                 goto out;
2945
2946         for (i=0;i<irq_ptr->no_input_qs;i++) {
2947                 if (irq_ptr->is_thinint_irq) {
2948                         /*
2949                          * that way we know, that, if we will get interrupted
2950                          * by tiqdio_inbound_processing, qdio_unmark_q will
2951                          * not be called
2952                          */
2953                         qdio_reserve_q(irq_ptr->input_qs[i]);
2954                         qdio_mark_tiq(irq_ptr->input_qs[i]);
2955                         qdio_release_q(irq_ptr->input_qs[i]);
2956                 }
2957         }
2958
2959         if (flags&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT) {
2960                 for (i=0;i<irq_ptr->no_input_qs;i++) {
2961                         irq_ptr->input_qs[i]->is_input_q|=
2962                                 QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT;
2963                 }
2964         }
2965
2966         wait_event_interruptible_timeout(cdev->private->wait_q,
2967                                          ((irq_ptr->state ==
2968                                           QDIO_IRQ_STATE_STOPPED) ||
2969                                           (irq_ptr->state ==
2970                                            QDIO_IRQ_STATE_ERR)),
2971                                          QDIO_ACTIVATE_TIMEOUT);
2972
2973         switch (irq_ptr->state) {
2974         case QDIO_IRQ_STATE_STOPPED:
2975         case QDIO_IRQ_STATE_ERR:
2976                 up(&irq_ptr->setting_up_sema);
2977                 qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
2978                 down(&irq_ptr->setting_up_sema);
2979                 result = -EIO;
2980                 break;
2981         default:
2982                 qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ACTIVE);
2983                 result = 0;
2984         }
2985  out:
2986         up(&irq_ptr->setting_up_sema);
2987
2988         return result;
2989 }
2990
2991 /* buffers filled forwards again to make Rick happy */
2992 static inline void
2993 qdio_do_qdio_fill_input(struct qdio_q *q, unsigned int qidx,
2994                         unsigned int count, struct qdio_buffer *buffers)
2995 {
2996         for (;;) {
2997                 set_slsb(&q->slsb.acc.val[qidx],SLSB_CU_INPUT_EMPTY);
2998                 count--;
2999                 if (!count) break;
3000                 qidx=(qidx+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
3001         }
3002
3003         /* not necessary, as the queues are synced during the SIGA read */
3004         /*SYNC_MEMORY;*/
3005 }
3006
3007 static inline void
3008 qdio_do_qdio_fill_output(struct qdio_q *q, unsigned int qidx,
3009                          unsigned int count, struct qdio_buffer *buffers)
3010 {
3011         for (;;) {
3012                 set_slsb(&q->slsb.acc.val[qidx],SLSB_CU_OUTPUT_PRIMED);
3013                 count--;
3014                 if (!count) break;
3015                 qidx=(qidx+1)&(QDIO_MAX_BUFFERS_PER_Q-1);
3016         }
3017
3018         /* SIGA write will sync the queues */
3019         /*SYNC_MEMORY;*/
3020 }
3021
3022 static inline void
3023 do_qdio_handle_inbound(struct qdio_q *q, unsigned int callflags,
3024                        unsigned int qidx, unsigned int count,
3025                        struct qdio_buffer *buffers)
3026 {
3027         int used_elements;
3028
3029         /* This is the inbound handling of queues */
3030         used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3031
3032         qdio_do_qdio_fill_input(q,qidx,count,buffers);
3033
3034         if ((used_elements+count==QDIO_MAX_BUFFERS_PER_Q)&&
3035             (callflags&QDIO_FLAG_UNDER_INTERRUPT))
3036                 atomic_swap(&q->polling,0);
3037
3038         if (used_elements)
3039                 return;
3040         if (callflags&QDIO_FLAG_DONT_SIGA)
3041                 return;
3042         if (q->siga_in) {
3043                 int result;
3044
3045                 result=qdio_siga_input(q);
3046                 if (result) {
3047                         if (q->siga_error)
3048                                 q->error_status_flags|=
3049                                         QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR;
3050                         q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR;
3051                         q->siga_error=result;
3052                 }
3053         }
3054
3055         qdio_mark_q(q);
3056 }
3057
3058 static inline void
3059 do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags,
3060                         unsigned int qidx, unsigned int count,
3061                         struct qdio_buffer *buffers)
3062 {
3063         int used_elements;
3064
3065         /* This is the outbound handling of queues */
3066 #ifdef QDIO_PERFORMANCE_STATS
3067         perf_stats.start_time_outbound=NOW;
3068 #endif /* QDIO_PERFORMANCE_STATS */
3069
3070         qdio_do_qdio_fill_output(q,qidx,count,buffers);
3071
3072         used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count;
3073
3074         if (callflags&QDIO_FLAG_DONT_SIGA) {
3075 #ifdef QDIO_PERFORMANCE_STATS
3076                 perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
3077                 perf_stats.outbound_cnt++;
3078 #endif /* QDIO_PERFORMANCE_STATS */
3079                 return;
3080         }
3081         if (q->is_iqdio_q) {
3082                 /* one siga for every sbal */
3083                 while (count--)
3084                         qdio_kick_outbound_q(q);
3085
3086                 __qdio_outbound_processing(q);
3087         } else {
3088                 /* under VM, we do a SIGA sync unconditionally */
3089                 SYNC_MEMORY;
3090                 else {
3091                         /*
3092                          * w/o shadow queues (else branch of
3093                          * SYNC_MEMORY :-/ ), we try to
3094                          * fast-requeue buffers
3095                          */
3096                         if (q->slsb.acc.val[(qidx+QDIO_MAX_BUFFERS_PER_Q-1)
3097                                             &(QDIO_MAX_BUFFERS_PER_Q-1)]!=
3098                             SLSB_CU_OUTPUT_PRIMED) {
3099                                 qdio_kick_outbound_q(q);
3100                         } else {
3101                                 QDIO_DBF_TEXT3(0,trace, "fast-req");
3102 #ifdef QDIO_PERFORMANCE_STATS
3103                                 perf_stats.fast_reqs++;
3104 #endif /* QDIO_PERFORMANCE_STATS */
3105                         }
3106                 }
3107                 /*
3108                  * only marking the q could take too long,
3109                  * the upper layer module could do a lot of
3110                  * traffic in that time
3111                  */
3112                 __qdio_outbound_processing(q);
3113         }
3114
3115 #ifdef QDIO_PERFORMANCE_STATS
3116         perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound;
3117         perf_stats.outbound_cnt++;
3118 #endif /* QDIO_PERFORMANCE_STATS */
3119 }
3120
3121 /* count must be 1 in iqdio */
3122 int
3123 do_QDIO(struct ccw_device *cdev,unsigned int callflags,
3124         unsigned int queue_number, unsigned int qidx,
3125         unsigned int count,struct qdio_buffer *buffers)
3126 {
3127         struct qdio_irq *irq_ptr;
3128 #ifdef CONFIG_QDIO_DEBUG
3129         char dbf_text[20];
3130
3131         sprintf(dbf_text,"doQD%04x",cdev->private->irq);
3132         QDIO_DBF_TEXT3(0,trace,dbf_text);
3133 #endif /* CONFIG_QDIO_DEBUG */
3134
3135         if ( (qidx>QDIO_MAX_BUFFERS_PER_Q) ||
3136              (count>QDIO_MAX_BUFFERS_PER_Q) ||
3137              (queue_number>QDIO_MAX_QUEUES_PER_IRQ) )
3138                 return -EINVAL;
3139
3140         if (count==0)
3141                 return 0;
3142
3143         irq_ptr = cdev->private->qdio_data;
3144         if (!irq_ptr)
3145                 return -ENODEV;
3146
3147 #ifdef CONFIG_QDIO_DEBUG
3148         if (callflags&QDIO_FLAG_SYNC_INPUT)
3149                 QDIO_DBF_HEX3(0,trace,&irq_ptr->input_qs[queue_number],
3150                               sizeof(void*));
3151         else
3152                 QDIO_DBF_HEX3(0,trace,&irq_ptr->output_qs[queue_number],
3153                               sizeof(void*));
3154         sprintf(dbf_text,"flag%04x",callflags);
3155         QDIO_DBF_TEXT3(0,trace,dbf_text);
3156         sprintf(dbf_text,"qi%02xct%02x",qidx,count);
3157         QDIO_DBF_TEXT3(0,trace,dbf_text);
3158 #endif /* CONFIG_QDIO_DEBUG */
3159
3160         if (irq_ptr->state!=QDIO_IRQ_STATE_ACTIVE)
3161                 return -EBUSY;
3162
3163         if (callflags&QDIO_FLAG_SYNC_INPUT)
3164                 do_qdio_handle_inbound(irq_ptr->input_qs[queue_number],
3165                                        callflags, qidx, count, buffers);
3166         else if (callflags&QDIO_FLAG_SYNC_OUTPUT)
3167                 do_qdio_handle_outbound(irq_ptr->output_qs[queue_number],
3168                                         callflags, qidx, count, buffers);
3169         else {
3170                 QDIO_DBF_TEXT3(1,trace,"doQD:inv");
3171                 return -EINVAL;
3172         }
3173         return 0;
3174 }
3175
3176 #ifdef QDIO_PERFORMANCE_STATS
3177 static int
3178 qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset,
3179                         int buffer_length, int *eof, void *data)
3180 {
3181         int c=0;
3182
3183         /* we are always called with buffer_length=4k, so we all
3184            deliver on the first read */
3185         if (offset>0)
3186                 return 0;
3187
3188 #define _OUTP_IT(x...) c+=sprintf(buffer+c,x)
3189         _OUTP_IT("i_p_nc/c=%lu/%lu\n",i_p_nc,i_p_c);
3190         _OUTP_IT("ii_p_nc/c=%lu/%lu\n",ii_p_nc,ii_p_c);
3191         _OUTP_IT("o_p_nc/c=%lu/%lu\n",o_p_nc,o_p_c);
3192         _OUTP_IT("Number of tasklet runs (total)                  : %u\n",
3193                  perf_stats.tl_runs);
3194         _OUTP_IT("\n");
3195         _OUTP_IT("Number of SIGA sync's issued                    : %u\n",
3196                  perf_stats.siga_syncs);
3197         _OUTP_IT("Number of SIGA in's issued                      : %u\n",
3198                  perf_stats.siga_ins);
3199         _OUTP_IT("Number of SIGA out's issued                     : %u\n",
3200                  perf_stats.siga_outs);
3201         _OUTP_IT("Number of PCIs caught                           : %u\n",
3202                  perf_stats.pcis);
3203         _OUTP_IT("Number of adapter interrupts caught             : %u\n",
3204                  perf_stats.thinints);
3205         _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA)  : %u\n",
3206                  perf_stats.fast_reqs);
3207         _OUTP_IT("\n");
3208         _OUTP_IT("Total time of all inbound actions (us) incl. UL : %u\n",
3209                  perf_stats.inbound_time);
3210         _OUTP_IT("Number of inbound transfers                     : %u\n",
3211                  perf_stats.inbound_cnt);
3212         _OUTP_IT("Total time of all outbound do_QDIOs (us)        : %u\n",
3213                  perf_stats.outbound_time);
3214         _OUTP_IT("Number of do_QDIOs outbound                     : %u\n",
3215                  perf_stats.outbound_cnt);
3216         _OUTP_IT("\n");
3217
3218         return c;
3219 }
3220
3221 static struct proc_dir_entry *qdio_perf_proc_file;
3222 #endif /* QDIO_PERFORMANCE_STATS */
3223
3224 static void
3225 qdio_add_procfs_entry(void)
3226 {
3227 #ifdef QDIO_PERFORMANCE_STATS
3228         proc_perf_file_registration=0;
3229         qdio_perf_proc_file=create_proc_entry(QDIO_PERF,
3230                                               S_IFREG|0444,&proc_root);
3231         if (qdio_perf_proc_file) {
3232                 qdio_perf_proc_file->read_proc=&qdio_perf_procfile_read;
3233         } else proc_perf_file_registration=-1;
3234
3235         if (proc_perf_file_registration)
3236                 QDIO_PRINT_WARN("was not able to register perf. " \
3237                                 "proc-file (%i).\n",
3238                                 proc_perf_file_registration);
3239 #endif /* QDIO_PERFORMANCE_STATS */
3240 }
3241
3242 static void
3243 qdio_remove_procfs_entry(void)
3244 {
3245 #ifdef QDIO_PERFORMANCE_STATS
3246         perf_stats.tl_runs=0;
3247
3248         if (!proc_perf_file_registration) /* means if it went ok earlier */
3249                 remove_proc_entry(QDIO_PERF,&proc_root);
3250 #endif /* QDIO_PERFORMANCE_STATS */
3251 }
3252
3253 static void
3254 tiqdio_register_thinints(void)
3255 {
3256         char dbf_text[20];
3257         register_thinint_result=
3258                 s390_register_adapter_interrupt(&tiqdio_thinint_handler);
3259         if (register_thinint_result) {
3260                 sprintf(dbf_text,"regthn%x",(register_thinint_result&0xff));
3261                 QDIO_DBF_TEXT0(0,setup,dbf_text);
3262                 QDIO_PRINT_ERR("failed to register adapter handler " \
3263                                "(rc=%i).\nAdapter interrupts might " \
3264                                "not work. Continuing.\n",
3265                                register_thinint_result);
3266         }
3267 }
3268
3269 static void
3270 tiqdio_unregister_thinints(void)
3271 {
3272         if (!register_thinint_result)
3273                 s390_unregister_adapter_interrupt(&tiqdio_thinint_handler);
3274 }
3275
3276 static int
3277 qdio_get_qdio_memory(void)
3278 {
3279         int i;
3280         indicator_used[0]=1;
3281
3282         for (i=1;i<INDICATORS_PER_CACHELINE;i++)
3283                 indicator_used[i]=0;
3284         indicators=(__u32*)kmalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE),
3285                                    GFP_KERNEL);
3286         if (!indicators) return -ENOMEM;
3287         memset(indicators,0,sizeof(__u32)*(INDICATORS_PER_CACHELINE));
3288         return 0;
3289 }
3290
3291 static void
3292 qdio_release_qdio_memory(void)
3293 {
3294         if (indicators)
3295                 kfree(indicators);
3296 }
3297
3298 static void
3299 qdio_unregister_dbf_views(void)
3300 {
3301         if (qdio_dbf_setup)
3302                 debug_unregister(qdio_dbf_setup);
3303         if (qdio_dbf_sbal)
3304                 debug_unregister(qdio_dbf_sbal);
3305         if (qdio_dbf_sense)
3306                 debug_unregister(qdio_dbf_sense);
3307         if (qdio_dbf_trace)
3308                 debug_unregister(qdio_dbf_trace);
3309 #ifdef CONFIG_QDIO_DEBUG
3310         if (qdio_dbf_slsb_out)
3311                 debug_unregister(qdio_dbf_slsb_out);
3312         if (qdio_dbf_slsb_in)
3313                 debug_unregister(qdio_dbf_slsb_in);
3314 #endif /* CONFIG_QDIO_DEBUG */
3315 }
3316
3317 static int
3318 qdio_register_dbf_views(void)
3319 {
3320         qdio_dbf_setup=debug_register(QDIO_DBF_SETUP_NAME,
3321                                       QDIO_DBF_SETUP_INDEX,
3322                                       QDIO_DBF_SETUP_NR_AREAS,
3323                                       QDIO_DBF_SETUP_LEN);
3324         if (!qdio_dbf_setup)
3325                 goto oom;
3326         debug_register_view(qdio_dbf_setup,&debug_hex_ascii_view);
3327         debug_set_level(qdio_dbf_setup,QDIO_DBF_SETUP_LEVEL);
3328
3329         qdio_dbf_sbal=debug_register(QDIO_DBF_SBAL_NAME,
3330                                      QDIO_DBF_SBAL_INDEX,
3331                                      QDIO_DBF_SBAL_NR_AREAS,
3332                                      QDIO_DBF_SBAL_LEN);
3333         if (!qdio_dbf_sbal)
3334                 goto oom;
3335
3336         debug_register_view(qdio_dbf_sbal,&debug_hex_ascii_view);
3337         debug_set_level(qdio_dbf_sbal,QDIO_DBF_SBAL_LEVEL);
3338
3339         qdio_dbf_sense=debug_register(QDIO_DBF_SENSE_NAME,
3340                                       QDIO_DBF_SENSE_INDEX,
3341                                       QDIO_DBF_SENSE_NR_AREAS,
3342                                       QDIO_DBF_SENSE_LEN);
3343         if (!qdio_dbf_sense)
3344                 goto oom;
3345
3346         debug_register_view(qdio_dbf_sense,&debug_hex_ascii_view);
3347         debug_set_level(qdio_dbf_sense,QDIO_DBF_SENSE_LEVEL);
3348
3349         qdio_dbf_trace=debug_register(QDIO_DBF_TRACE_NAME,
3350                                       QDIO_DBF_TRACE_INDEX,
3351                                       QDIO_DBF_TRACE_NR_AREAS,
3352                                       QDIO_DBF_TRACE_LEN);
3353         if (!qdio_dbf_trace)
3354                 goto oom;
3355
3356         debug_register_view(qdio_dbf_trace,&debug_hex_ascii_view);
3357         debug_set_level(qdio_dbf_trace,QDIO_DBF_TRACE_LEVEL);
3358
3359 #ifdef CONFIG_QDIO_DEBUG
3360         qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME,
3361                                          QDIO_DBF_SLSB_OUT_INDEX,
3362                                          QDIO_DBF_SLSB_OUT_NR_AREAS,
3363                                          QDIO_DBF_SLSB_OUT_LEN);
3364         if (!qdio_dbf_slsb_out)
3365                 goto oom;
3366         debug_register_view(qdio_dbf_slsb_out,&debug_hex_ascii_view);
3367         debug_set_level(qdio_dbf_slsb_out,QDIO_DBF_SLSB_OUT_LEVEL);
3368
3369         qdio_dbf_slsb_in=debug_register(QDIO_DBF_SLSB_IN_NAME,
3370                                         QDIO_DBF_SLSB_IN_INDEX,
3371                                         QDIO_DBF_SLSB_IN_NR_AREAS,
3372                                         QDIO_DBF_SLSB_IN_LEN);
3373         if (!qdio_dbf_slsb_in)
3374                 goto oom;
3375         debug_register_view(qdio_dbf_slsb_in,&debug_hex_ascii_view);
3376         debug_set_level(qdio_dbf_slsb_in,QDIO_DBF_SLSB_IN_LEVEL);
3377 #endif /* CONFIG_QDIO_DEBUG */
3378         return 0;
3379 oom:
3380         QDIO_PRINT_ERR("not enough memory for dbf.\n");
3381         qdio_unregister_dbf_views();
3382         return -ENOMEM;
3383 }
3384
3385 static int __init
3386 init_QDIO(void)
3387 {
3388         int res;
3389 #ifdef QDIO_PERFORMANCE_STATS
3390         void *ptr;
3391 #endif /* QDIO_PERFORMANCE_STATS */
3392
3393         printk("qdio: loading %s\n",version);
3394
3395         res=qdio_get_qdio_memory();
3396         if (res)
3397                 return res;
3398
3399         res = qdio_register_dbf_views();
3400         if (res)
3401                 return res;
3402
3403         QDIO_DBF_TEXT0(0,setup,"initQDIO");
3404
3405 #ifdef QDIO_PERFORMANCE_STATS
3406         memset((void*)&perf_stats,0,sizeof(perf_stats));
3407         QDIO_DBF_TEXT0(0,setup,"perfstat");
3408         ptr=&perf_stats;
3409         QDIO_DBF_HEX0(0,setup,&ptr,sizeof(void*));
3410 #endif /* QDIO_PERFORMANCE_STATS */
3411
3412         qdio_add_procfs_entry();
3413
3414         if (tiqdio_check_chsc_availability())
3415                 QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
3416
3417         tiqdio_register_thinints();
3418
3419         return 0;
3420  }
3421
3422 static void __exit
3423 cleanup_QDIO(void)
3424 {
3425         tiqdio_unregister_thinints();
3426         qdio_remove_procfs_entry();
3427         qdio_release_qdio_memory();
3428         qdio_unregister_dbf_views();
3429
3430         printk("qdio: %s: module removed\n",version);
3431 }
3432
3433 module_init(init_QDIO);
3434 module_exit(cleanup_QDIO);
3435
3436 EXPORT_SYMBOL(qdio_allocate);
3437 EXPORT_SYMBOL(qdio_establish);
3438 EXPORT_SYMBOL(qdio_initialize);
3439 EXPORT_SYMBOL(qdio_activate);
3440 EXPORT_SYMBOL(do_QDIO);
3441 EXPORT_SYMBOL(qdio_shutdown);
3442 EXPORT_SYMBOL(qdio_free);
3443 EXPORT_SYMBOL(qdio_cleanup);
3444 EXPORT_SYMBOL(qdio_synchronize);