drivers/s390/cio/qdio.h

   1 #ifndef _CIO_QDIO_H
   2 #define _CIO_QDIO_H
   3
   4 #include <asm/page.h>
   5
   6 #include "schid.h"
   7
   8 #ifdef CONFIG_QDIO_DEBUG
   9 #define QDIO_VERBOSE_LEVEL 9
  10 #else /* CONFIG_QDIO_DEBUG */
  11 #define QDIO_VERBOSE_LEVEL 5
  12 #endif /* CONFIG_QDIO_DEBUG */
  13 #define QDIO_USE_PROCESSING_STATE
  14
  15 #ifdef CONFIG_QDIO_PERF_STATS
  16 #define QDIO_PERFORMANCE_STATS
  17 #endif /* CONFIG_QDIO_PERF_STATS */
  18
  19 #define QDIO_MINIMAL_BH_RELIEF_TIME 16
  20 #define QDIO_TIMER_POLL_VALUE 1
  21 #define IQDIO_TIMER_POLL_VALUE 1
  22
  23 /*
  24  * unfortunately this can't be (QDIO_MAX_BUFFERS_PER_Q*4/3) or so -- as
  25  * we never know, whether we'll get initiative again, e.g. to give the
  26  * transmit skb's back to the stack, however the stack may be waiting for
  27  * them... therefore we define 4 as threshold to start polling (which
  28  * will stop as soon as the asynchronous queue catches up)
  29  * btw, this only applies to the asynchronous HiperSockets queue
  30  */
  31 #define IQDIO_FILL_LEVEL_TO_POLL 4
  32
  33 #define TIQDIO_THININT_ISC 3
  34 #define TIQDIO_DELAY_TARGET 0
  35 #define QDIO_BUSY_BIT_PATIENCE 100 /* in microsecs */
  36 #define QDIO_BUSY_BIT_GIVE_UP 10000000 /* 10 seconds */
  37 #define IQDIO_GLOBAL_LAPS 2 /* GLOBAL_LAPS are not used as we */
  38 #define IQDIO_GLOBAL_LAPS_INT 1 /* don't global summary */
  39 #define IQDIO_LOCAL_LAPS 4
  40 #define IQDIO_LOCAL_LAPS_INT 1
  41 #define IQDIO_GLOBAL_SUMMARY_CC_MASK 2
  42 /*#define IQDIO_IQDC_INT_PARM 0x1234*/
  43
  44 #define QDIO_Q_LAPS 5
  45
  46 #define QDIO_STORAGE_KEY PAGE_DEFAULT_KEY
  47
  48 #define L2_CACHELINE_SIZE 256
  49 #define INDICATORS_PER_CACHELINE (L2_CACHELINE_SIZE/sizeof(__u32))
  50
  51 #define QDIO_PERF "qdio_perf"
  52
  53 /* must be a power of 2 */
  54 /*#define QDIO_STATS_NUMBER 4
  55
  56 #define QDIO_STATS_CLASSES 2
  57 #define QDIO_STATS_COUNT_NEEDED 2*/
  58
  59 #define QDIO_NO_USE_COUNT_TIMEOUT (1*HZ) /* wait for 1 sec on each q before
  60                                             exiting without having use_count
  61                                             of the queue to 0 */
  62
  63 #define QDIO_ESTABLISH_TIMEOUT (1*HZ)
  64 #define QDIO_ACTIVATE_TIMEOUT ((5*HZ)>>10)
  65 #define QDIO_CLEANUP_CLEAR_TIMEOUT (20*HZ)
  66 #define QDIO_CLEANUP_HALT_TIMEOUT (10*HZ)
  67
  68 enum qdio_irq_states {
  69         QDIO_IRQ_STATE_INACTIVE,
  70         QDIO_IRQ_STATE_ESTABLISHED,
  71         QDIO_IRQ_STATE_ACTIVE,
  72         QDIO_IRQ_STATE_STOPPED,
  73         QDIO_IRQ_STATE_CLEANUP,
  74         QDIO_IRQ_STATE_ERR,
  75         NR_QDIO_IRQ_STATES,
  76 };
  77
  78 /* used as intparm in do_IO: */
  79 #define QDIO_DOING_SENSEID 0
  80 #define QDIO_DOING_ESTABLISH 1
  81 #define QDIO_DOING_ACTIVATE 2
  82 #define QDIO_DOING_CLEANUP 3
  83
  84 /************************* DEBUG FACILITY STUFF *********************/
  85
  86 #define QDIO_DBF_HEX(ex,name,level,addr,len) \
  87         do { \
  88         if (ex) \
  89                 debug_exception(qdio_dbf_##name,level,(void*)(addr),len); \
  90         else \
  91                 debug_event(qdio_dbf_##name,level,(void*)(addr),len); \
  92         } while (0)
  93 #define QDIO_DBF_TEXT(ex,name,level,text) \
  94         do { \
  95         if (ex) \
  96                 debug_text_exception(qdio_dbf_##name,level,text); \
  97         else \
  98                 debug_text_event(qdio_dbf_##name,level,text); \
  99         } while (0)
 100
 101
 102 #define QDIO_DBF_HEX0(ex,name,addr,len) QDIO_DBF_HEX(ex,name,0,addr,len)
 103 #define QDIO_DBF_HEX1(ex,name,addr,len) QDIO_DBF_HEX(ex,name,1,addr,len)
 104 #define QDIO_DBF_HEX2(ex,name,addr,len) QDIO_DBF_HEX(ex,name,2,addr,len)
 105 #ifdef CONFIG_QDIO_DEBUG
 106 #define QDIO_DBF_HEX3(ex,name,addr,len) QDIO_DBF_HEX(ex,name,3,addr,len)
 107 #define QDIO_DBF_HEX4(ex,name,addr,len) QDIO_DBF_HEX(ex,name,4,addr,len)
 108 #define QDIO_DBF_HEX5(ex,name,addr,len) QDIO_DBF_HEX(ex,name,5,addr,len)
 109 #define QDIO_DBF_HEX6(ex,name,addr,len) QDIO_DBF_HEX(ex,name,6,addr,len)
 110 #else /* CONFIG_QDIO_DEBUG */
 111 #define QDIO_DBF_HEX3(ex,name,addr,len) do {} while (0)
 112 #define QDIO_DBF_HEX4(ex,name,addr,len) do {} while (0)
 113 #define QDIO_DBF_HEX5(ex,name,addr,len) do {} while (0)
 114 #define QDIO_DBF_HEX6(ex,name,addr,len) do {} while (0)
 115 #endif /* CONFIG_QDIO_DEBUG */
 116
 117 #define QDIO_DBF_TEXT0(ex,name,text) QDIO_DBF_TEXT(ex,name,0,text)
 118 #define QDIO_DBF_TEXT1(ex,name,text) QDIO_DBF_TEXT(ex,name,1,text)
 119 #define QDIO_DBF_TEXT2(ex,name,text) QDIO_DBF_TEXT(ex,name,2,text)
 120 #ifdef CONFIG_QDIO_DEBUG
 121 #define QDIO_DBF_TEXT3(ex,name,text) QDIO_DBF_TEXT(ex,name,3,text)
 122 #define QDIO_DBF_TEXT4(ex,name,text) QDIO_DBF_TEXT(ex,name,4,text)
 123 #define QDIO_DBF_TEXT5(ex,name,text) QDIO_DBF_TEXT(ex,name,5,text)
 124 #define QDIO_DBF_TEXT6(ex,name,text) QDIO_DBF_TEXT(ex,name,6,text)
 125 #else /* CONFIG_QDIO_DEBUG */
 126 #define QDIO_DBF_TEXT3(ex,name,text) do {} while (0)
 127 #define QDIO_DBF_TEXT4(ex,name,text) do {} while (0)
 128 #define QDIO_DBF_TEXT5(ex,name,text) do {} while (0)
 129 #define QDIO_DBF_TEXT6(ex,name,text) do {} while (0)
 130 #endif /* CONFIG_QDIO_DEBUG */
 131
 132 #define QDIO_DBF_SETUP_NAME "qdio_setup"
 133 #define QDIO_DBF_SETUP_LEN 8
 134 #define QDIO_DBF_SETUP_PAGES 4
 135 #define QDIO_DBF_SETUP_NR_AREAS 1
 136 #ifdef CONFIG_QDIO_DEBUG
 137 #define QDIO_DBF_SETUP_LEVEL 6
 138 #else /* CONFIG_QDIO_DEBUG */
 139 #define QDIO_DBF_SETUP_LEVEL 2
 140 #endif /* CONFIG_QDIO_DEBUG */
 141
 142 #define QDIO_DBF_SBAL_NAME "qdio_labs" /* sbal */
 143 #define QDIO_DBF_SBAL_LEN 256
 144 #define QDIO_DBF_SBAL_PAGES 4
 145 #define QDIO_DBF_SBAL_NR_AREAS 2
 146 #ifdef CONFIG_QDIO_DEBUG
 147 #define QDIO_DBF_SBAL_LEVEL 6
 148 #else /* CONFIG_QDIO_DEBUG */
 149 #define QDIO_DBF_SBAL_LEVEL 2
 150 #endif /* CONFIG_QDIO_DEBUG */
 151
 152 #define QDIO_DBF_TRACE_NAME "qdio_trace"
 153 #define QDIO_DBF_TRACE_LEN 8
 154 #define QDIO_DBF_TRACE_NR_AREAS 2
 155 #ifdef CONFIG_QDIO_DEBUG
 156 #define QDIO_DBF_TRACE_PAGES 16
 157 #define QDIO_DBF_TRACE_LEVEL 4 /* -------- could be even more verbose here */
 158 #else /* CONFIG_QDIO_DEBUG */
 159 #define QDIO_DBF_TRACE_PAGES 4
 160 #define QDIO_DBF_TRACE_LEVEL 2
 161 #endif /* CONFIG_QDIO_DEBUG */
 162
 163 #define QDIO_DBF_SENSE_NAME "qdio_sense"
 164 #define QDIO_DBF_SENSE_LEN 64
 165 #define QDIO_DBF_SENSE_PAGES 2
 166 #define QDIO_DBF_SENSE_NR_AREAS 1
 167 #ifdef CONFIG_QDIO_DEBUG
 168 #define QDIO_DBF_SENSE_LEVEL 6
 169 #else /* CONFIG_QDIO_DEBUG */
 170 #define QDIO_DBF_SENSE_LEVEL 2
 171 #endif /* CONFIG_QDIO_DEBUG */
 172
 173 #ifdef CONFIG_QDIO_DEBUG
 174 #define QDIO_TRACE_QTYPE QDIO_ZFCP_QFMT
 175
 176 #define QDIO_DBF_SLSB_OUT_NAME "qdio_slsb_out"
 177 #define QDIO_DBF_SLSB_OUT_LEN QDIO_MAX_BUFFERS_PER_Q
 178 #define QDIO_DBF_SLSB_OUT_PAGES 256
 179 #define QDIO_DBF_SLSB_OUT_NR_AREAS 1
 180 #define QDIO_DBF_SLSB_OUT_LEVEL 6
 181
 182 #define QDIO_DBF_SLSB_IN_NAME "qdio_slsb_in"
 183 #define QDIO_DBF_SLSB_IN_LEN QDIO_MAX_BUFFERS_PER_Q
 184 #define QDIO_DBF_SLSB_IN_PAGES 256
 185 #define QDIO_DBF_SLSB_IN_NR_AREAS 1
 186 #define QDIO_DBF_SLSB_IN_LEVEL 6
 187 #endif /* CONFIG_QDIO_DEBUG */
 188
 189 #define QDIO_PRINTK_HEADER QDIO_NAME ": "
 190
 191 #if QDIO_VERBOSE_LEVEL>8
 192 #define QDIO_PRINT_STUPID(x...) printk( KERN_DEBUG QDIO_PRINTK_HEADER x)
 193 #else
 194 #define QDIO_PRINT_STUPID(x...) do { } while (0)
 195 #endif
 196
 197 #if QDIO_VERBOSE_LEVEL>7
 198 #define QDIO_PRINT_ALL(x...) printk( QDIO_PRINTK_HEADER x)
 199 #else
 200 #define QDIO_PRINT_ALL(x...) do { } while (0)
 201 #endif
 202
 203 #if QDIO_VERBOSE_LEVEL>6
 204 #define QDIO_PRINT_INFO(x...) printk( QDIO_PRINTK_HEADER x)
 205 #else
 206 #define QDIO_PRINT_INFO(x...) do { } while (0)
 207 #endif
 208
 209 #if QDIO_VERBOSE_LEVEL>5
 210 #define QDIO_PRINT_WARN(x...) printk( QDIO_PRINTK_HEADER x)
 211 #else
 212 #define QDIO_PRINT_WARN(x...) do { } while (0)
 213 #endif
 214
 215 #if QDIO_VERBOSE_LEVEL>4
 216 #define QDIO_PRINT_ERR(x...) printk( QDIO_PRINTK_HEADER x)
 217 #else
 218 #define QDIO_PRINT_ERR(x...) do { } while (0)
 219 #endif
 220
 221 #if QDIO_VERBOSE_LEVEL>3
 222 #define QDIO_PRINT_CRIT(x...) printk( QDIO_PRINTK_HEADER x)
 223 #else
 224 #define QDIO_PRINT_CRIT(x...) do { } while (0)
 225 #endif
 226
 227 #if QDIO_VERBOSE_LEVEL>2
 228 #define QDIO_PRINT_ALERT(x...) printk( QDIO_PRINTK_HEADER x)
 229 #else
 230 #define QDIO_PRINT_ALERT(x...) do { } while (0)
 231 #endif
 232
 233 #if QDIO_VERBOSE_LEVEL>1
 234 #define QDIO_PRINT_EMERG(x...) printk( QDIO_PRINTK_HEADER x)
 235 #else
 236 #define QDIO_PRINT_EMERG(x...) do { } while (0)
 237 #endif
 238
 239 #define HEXDUMP16(importance,header,ptr) \
 240 QDIO_PRINT_##importance(header "%02x %02x %02x %02x  " \
 241                         "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
 242                         "%02x %02x %02x %02x\n",*(((char*)ptr)), \
 243                         *(((char*)ptr)+1),*(((char*)ptr)+2), \
 244                         *(((char*)ptr)+3),*(((char*)ptr)+4), \
 245                         *(((char*)ptr)+5),*(((char*)ptr)+6), \
 246                         *(((char*)ptr)+7),*(((char*)ptr)+8), \
 247                         *(((char*)ptr)+9),*(((char*)ptr)+10), \
 248                         *(((char*)ptr)+11),*(((char*)ptr)+12), \
 249                         *(((char*)ptr)+13),*(((char*)ptr)+14), \
 250                         *(((char*)ptr)+15)); \
 251 QDIO_PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
 252                         "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
 253                         *(((char*)ptr)+16),*(((char*)ptr)+17), \
 254                         *(((char*)ptr)+18),*(((char*)ptr)+19), \
 255                         *(((char*)ptr)+20),*(((char*)ptr)+21), \
 256                         *(((char*)ptr)+22),*(((char*)ptr)+23), \
 257                         *(((char*)ptr)+24),*(((char*)ptr)+25), \
 258                         *(((char*)ptr)+26),*(((char*)ptr)+27), \
 259                         *(((char*)ptr)+28),*(((char*)ptr)+29), \
 260                         *(((char*)ptr)+30),*(((char*)ptr)+31));
 261
 262 /****************** END OF DEBUG FACILITY STUFF *********************/
 263
 264 /*
 265  * Some instructions as assembly
 266  */
 267
 268 static inline int
 269 do_sqbs(unsigned long sch, unsigned char state, int queue,
 270        unsigned int *start, unsigned int *count)
 271 {
 272 #ifdef CONFIG_64BIT
 273        register unsigned long _ccq asm ("0") = *count;
 274        register unsigned long _sch asm ("1") = sch;
 275        unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
 276
 277        asm volatile(
 278                "        .insn   rsy,0xeb000000008A,%1,0,0(%2)"
 279                : "+d" (_ccq), "+d" (_queuestart)
 280                : "d" ((unsigned long)state), "d" (_sch)
 281                : "memory", "cc");
 282        *count = _ccq & 0xff;
 283        *start = _queuestart & 0xff;
 284
 285        return (_ccq >> 32) & 0xff;
 286 #else
 287        return 0;
 288 #endif
 289 }
 290
 291 static inline int
 292 do_eqbs(unsigned long sch, unsigned char *state, int queue,
 293         unsigned int *start, unsigned int *count)
 294 {
 295 #ifdef CONFIG_64BIT
 296         register unsigned long _ccq asm ("0") = *count;
 297         register unsigned long _sch asm ("1") = sch;
 298         unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
 299         unsigned long _state = 0;
 300
 301         asm volatile(
 302                 "       .insn   rrf,0xB99c0000,%1,%2,0,0"
 303                 : "+d" (_ccq), "+d" (_queuestart), "+d" (_state)
 304                 : "d" (_sch)
 305                 : "memory", "cc" );
 306         *count = _ccq & 0xff;
 307         *start = _queuestart & 0xff;
 308         *state = _state & 0xff;
 309
 310         return (_ccq >> 32) & 0xff;
 311 #else
 312         return 0;
 313 #endif
 314 }
 315
 316
 317 static inline int
 318 do_siga_sync(struct subchannel_id schid, unsigned int mask1, unsigned int mask2)
 319 {
 320         register unsigned long reg0 asm ("0") = 2;
 321         register struct subchannel_id reg1 asm ("1") = schid;
 322         register unsigned long reg2 asm ("2") = mask1;
 323         register unsigned long reg3 asm ("3") = mask2;
 324         int cc;
 325
 326         asm volatile(
 327                 "       siga    0\n"
 328                 "       ipm     %0\n"
 329                 "       srl     %0,28\n"
 330                 : "=d" (cc)
 331                 : "d" (reg0), "d" (reg1), "d" (reg2), "d" (reg3) : "cc");
 332         return cc;
 333 }
 334
 335 static inline int
 336 do_siga_input(struct subchannel_id schid, unsigned int mask)
 337 {
 338         register unsigned long reg0 asm ("0") = 1;
 339         register struct subchannel_id reg1 asm ("1") = schid;
 340         register unsigned long reg2 asm ("2") = mask;
 341         int cc;
 342
 343         asm volatile(
 344                 "       siga    0\n"
 345                 "       ipm     %0\n"
 346                 "       srl     %0,28\n"
 347                 : "=d" (cc)
 348                 : "d" (reg0), "d" (reg1), "d" (reg2) : "cc", "memory");
 349         return cc;
 350 }
 351
 352 static inline int
 353 do_siga_output(unsigned long schid, unsigned long mask, __u32 *bb,
 354                unsigned int fc)
 355 {
 356         register unsigned long __fc asm("0") = fc;
 357         register unsigned long __schid asm("1") = schid;
 358         register unsigned long __mask asm("2") = mask;
 359         int cc;
 360
 361         asm volatile(
 362                 "       siga    0\n"
 363                 "0:     ipm     %0\n"
 364                 "       srl     %0,28\n"
 365                 "1:\n"
 366                 EX_TABLE(0b,1b)
 367                 : "=d" (cc), "+d" (__fc), "+d" (__schid), "+d" (__mask)
 368                 : "0" (QDIO_SIGA_ERROR_ACCESS_EXCEPTION)
 369                 : "cc", "memory");
 370         (*bb) = ((unsigned int) __fc) >> 31;
 371         return cc;
 372 }
 373
 374 static inline unsigned long
 375 do_clear_global_summary(void)
 376 {
 377         register unsigned long __fn asm("1") = 3;
 378         register unsigned long __tmp asm("2");
 379         register unsigned long __time asm("3");
 380
 381         asm volatile(
 382                 "       .insn   rre,0xb2650000,2,0"
 383                 : "+d" (__fn), "=d" (__tmp), "=d" (__time));
 384         return __time;
 385 }
 386
 387 /*
 388  * QDIO device commands returned by extended Sense-ID
 389  */
 390 #define DEFAULT_ESTABLISH_QS_CMD 0x1b
 391 #define DEFAULT_ESTABLISH_QS_COUNT 0x1000
 392 #define DEFAULT_ACTIVATE_QS_CMD 0x1f
 393 #define DEFAULT_ACTIVATE_QS_COUNT 0
 394
 395 /*
 396  * additional CIWs returned by extended Sense-ID
 397  */
 398 #define CIW_TYPE_EQUEUE 0x3       /* establish QDIO queues */
 399 #define CIW_TYPE_AQUEUE 0x4       /* activate QDIO queues */
 400
 401 #define QDIO_CHSC_RESPONSE_CODE_OK 1
 402 /* flags for st qdio sch data */
 403 #define CHSC_FLAG_QDIO_CAPABILITY 0x80
 404 #define CHSC_FLAG_VALIDITY 0x40
 405
 406 #define CHSC_FLAG_SIGA_INPUT_NECESSARY 0x40
 407 #define CHSC_FLAG_SIGA_OUTPUT_NECESSARY 0x20
 408 #define CHSC_FLAG_SIGA_SYNC_NECESSARY 0x10
 409 #define CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS 0x08
 410 #define CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS 0x04
 411
 412 #ifdef QDIO_PERFORMANCE_STATS
 413 struct qdio_perf_stats {
 414         unsigned int tl_runs;
 415
 416         unsigned int siga_outs;
 417         unsigned int siga_ins;
 418         unsigned int siga_syncs;
 419         unsigned int pcis;
 420         unsigned int thinints;
 421         unsigned int fast_reqs;
 422
 423         __u64 start_time_outbound;
 424         unsigned int outbound_cnt;
 425         unsigned int outbound_time;
 426         __u64 start_time_inbound;
 427         unsigned int inbound_cnt;
 428         unsigned int inbound_time;
 429 };
 430 #endif /* QDIO_PERFORMANCE_STATS */
 431
 432 #define atomic_swap(a,b) xchg((int*)a.counter,b)
 433
 434 /* unlikely as the later the better */
 435 #define SYNC_MEMORY if (unlikely(q->siga_sync)) qdio_siga_sync_q(q)
 436 #define SYNC_MEMORY_ALL if (unlikely(q->siga_sync)) \
 437         qdio_siga_sync(q,~0U,~0U)
 438 #define SYNC_MEMORY_ALL_OUTB if (unlikely(q->siga_sync)) \
 439         qdio_siga_sync(q,~0U,0)
 440
 441 #define NOW qdio_get_micros()
 442 #define SAVE_TIMESTAMP(q) q->timing.last_transfer_time=NOW
 443 #define GET_SAVED_TIMESTAMP(q) (q->timing.last_transfer_time)
 444 #define SAVE_FRONTIER(q,val) q->last_move_ftc=val
 445 #define GET_SAVED_FRONTIER(q) (q->last_move_ftc)
 446
 447 #define MY_MODULE_STRING(x) #x
 448
 449 #ifdef CONFIG_64BIT
 450 #define QDIO_GET_ADDR(x) ((__u32)(unsigned long)x)
 451 #else /* CONFIG_64BIT */
 452 #define QDIO_GET_ADDR(x) ((__u32)(long)x)
 453 #endif /* CONFIG_64BIT */
 454
 455 struct qdio_q {
 456         volatile struct slsb slsb;
 457
 458         char unused[QDIO_MAX_BUFFERS_PER_Q];
 459
 460         __u32 * dev_st_chg_ind;
 461
 462         int is_input_q;
 463         struct subchannel_id schid;
 464         struct ccw_device *cdev;
 465
 466         unsigned int is_iqdio_q;
 467         unsigned int is_thinint_q;
 468
 469         /* bit 0 means queue 0, bit 1 means queue 1, ... */
 470         unsigned int mask;
 471         unsigned int q_no;
 472
 473         qdio_handler_t (*handler);
 474
 475         /* points to the next buffer to be checked for having
 476          * been processed by the card (outbound)
 477          * or to the next buffer the program should check for (inbound) */
 478         volatile int first_to_check;
 479         /* and the last time it was: */
 480         volatile int last_move_ftc;
 481
 482         atomic_t number_of_buffers_used;
 483         atomic_t polling;
 484
 485         unsigned int siga_in;
 486         unsigned int siga_out;
 487         unsigned int siga_sync;
 488         unsigned int siga_sync_done_on_thinints;
 489         unsigned int siga_sync_done_on_outb_tis;
 490         unsigned int hydra_gives_outbound_pcis;
 491
 492         /* used to save beginning position when calling dd_handlers */
 493         int first_element_to_kick;
 494
 495         atomic_t use_count;
 496         atomic_t is_in_shutdown;
 497
 498         void *irq_ptr;
 499
 500 #ifdef QDIO_USE_TIMERS_FOR_POLLING
 501         struct timer_list timer;
 502         atomic_t timer_already_set;
 503         spinlock_t timer_lock;
 504 #else /* QDIO_USE_TIMERS_FOR_POLLING */
 505         struct tasklet_struct tasklet;
 506 #endif /* QDIO_USE_TIMERS_FOR_POLLING */
 507
 508
 509         enum qdio_irq_states state;
 510
 511         /* used to store the error condition during a data transfer */
 512         unsigned int qdio_error;
 513         unsigned int siga_error;
 514         unsigned int error_status_flags;
 515
 516         /* list of interesting queues */
 517         volatile struct qdio_q *list_next;
 518         volatile struct qdio_q *list_prev;
 519
 520         struct sl *sl;
 521         volatile struct sbal *sbal[QDIO_MAX_BUFFERS_PER_Q];
 522
 523         struct qdio_buffer *qdio_buffers[QDIO_MAX_BUFFERS_PER_Q];
 524
 525         unsigned long int_parm;
 526
 527         /*struct {
 528                 int in_bh_check_limit;
 529                 int threshold;
 530         } threshold_classes[QDIO_STATS_CLASSES];*/
 531
 532         struct {
 533                 /* inbound: the time to stop polling
 534                    outbound: the time to kick peer */
 535                 int threshold; /* the real value */
 536
 537                 /* outbound: last time of do_QDIO
 538                    inbound: last time of noticing incoming data */
 539                 /*__u64 last_transfer_times[QDIO_STATS_NUMBER];
 540                 int last_transfer_index; */
 541
 542                 __u64 last_transfer_time;
 543                 __u64 busy_start;
 544         } timing;
 545         atomic_t busy_siga_counter;
 546         unsigned int queue_type;
 547
 548         /* leave this member at the end. won't be cleared in qdio_fill_qs */
 549         struct slib *slib; /* a page is allocated under this pointer,
 550                               sl points into this page, offset PAGE_SIZE/2
 551                               (after slib) */
 552 } __attribute__ ((aligned(256)));
 553
 554 struct qdio_irq {
 555         __u32 * volatile dev_st_chg_ind;
 556
 557         unsigned long int_parm;
 558         struct subchannel_id schid;
 559
 560         unsigned int is_iqdio_irq;
 561         unsigned int is_thinint_irq;
 562         unsigned int hydra_gives_outbound_pcis;
 563         unsigned int sync_done_on_outb_pcis;
 564
 565         /* QEBSM facility */
 566         unsigned int is_qebsm;
 567         unsigned long sch_token;
 568
 569         enum qdio_irq_states state;
 570
 571         unsigned int no_input_qs;
 572         unsigned int no_output_qs;
 573
 574         unsigned char qdioac;
 575
 576         struct ccw1 ccw;
 577
 578         struct ciw equeue;
 579         struct ciw aqueue;
 580
 581         struct qib qib;
 582
 583         void (*original_int_handler) (struct ccw_device *,
 584                                       unsigned long, struct irb *);
 585
 586         /* leave these four members together at the end. won't be cleared in qdio_fill_irq */
 587         struct qdr *qdr;
 588         struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
 589         struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];
 590         struct semaphore setting_up_sema;
 591 };
 592 #endif