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 #define QDIO_MINIMAL_BH_RELIEF_TIME 16
  16 #define QDIO_TIMER_POLL_VALUE 1
  17 #define IQDIO_TIMER_POLL_VALUE 1
  18
  19 /*
  20  * unfortunately this can't be (QDIO_MAX_BUFFERS_PER_Q*4/3) or so -- as
  21  * we never know, whether we'll get initiative again, e.g. to give the
  22  * transmit skb's back to the stack, however the stack may be waiting for
  23  * them... therefore we define 4 as threshold to start polling (which
  24  * will stop as soon as the asynchronous queue catches up)
  25  * btw, this only applies to the asynchronous HiperSockets queue
  26  */
  27 #define IQDIO_FILL_LEVEL_TO_POLL 4
  28
  29 #define TIQDIO_THININT_ISC 3
  30 #define TIQDIO_DELAY_TARGET 0
  31 #define QDIO_BUSY_BIT_PATIENCE 100 /* in microsecs */
  32 #define QDIO_BUSY_BIT_GIVE_UP 10000000 /* 10 seconds */
  33 #define IQDIO_GLOBAL_LAPS 2 /* GLOBAL_LAPS are not used as we */
  34 #define IQDIO_GLOBAL_LAPS_INT 1 /* don't global summary */
  35 #define IQDIO_LOCAL_LAPS 4
  36 #define IQDIO_LOCAL_LAPS_INT 1
  37 #define IQDIO_GLOBAL_SUMMARY_CC_MASK 2
  38 /*#define IQDIO_IQDC_INT_PARM 0x1234*/
  39
  40 #define QDIO_Q_LAPS 5
  41
  42 #define QDIO_STORAGE_KEY PAGE_DEFAULT_KEY
  43
  44 #define L2_CACHELINE_SIZE 256
  45 #define INDICATORS_PER_CACHELINE (L2_CACHELINE_SIZE/sizeof(__u32))
  46
  47 #define QDIO_PERF "qdio_perf"
  48
  49 /* must be a power of 2 */
  50 /*#define QDIO_STATS_NUMBER 4
  51
  52 #define QDIO_STATS_CLASSES 2
  53 #define QDIO_STATS_COUNT_NEEDED 2*/
  54
  55 #define QDIO_NO_USE_COUNT_TIMEOUT (1*HZ) /* wait for 1 sec on each q before
  56                                             exiting without having use_count
  57                                             of the queue to 0 */
  58
  59 #define QDIO_ESTABLISH_TIMEOUT (1*HZ)
  60 #define QDIO_ACTIVATE_TIMEOUT ((5*HZ)>>10)
  61 #define QDIO_CLEANUP_CLEAR_TIMEOUT (20*HZ)
  62 #define QDIO_CLEANUP_HALT_TIMEOUT (10*HZ)
  63 #define QDIO_FORCE_CHECK_TIMEOUT (10*HZ)
  64
  65 enum qdio_irq_states {
  66         QDIO_IRQ_STATE_INACTIVE,
  67         QDIO_IRQ_STATE_ESTABLISHED,
  68         QDIO_IRQ_STATE_ACTIVE,
  69         QDIO_IRQ_STATE_STOPPED,
  70         QDIO_IRQ_STATE_CLEANUP,
  71         QDIO_IRQ_STATE_ERR,
  72         NR_QDIO_IRQ_STATES,
  73 };
  74
  75 /* used as intparm in do_IO: */
  76 #define QDIO_DOING_SENSEID 0
  77 #define QDIO_DOING_ESTABLISH 1
  78 #define QDIO_DOING_ACTIVATE 2
  79 #define QDIO_DOING_CLEANUP 3
  80
  81 /************************* DEBUG FACILITY STUFF *********************/
  82
  83 #define QDIO_DBF_HEX(ex,name,level,addr,len) \
  84         do { \
  85         if (ex) \
  86                 debug_exception(qdio_dbf_##name,level,(void*)(addr),len); \
  87         else \
  88                 debug_event(qdio_dbf_##name,level,(void*)(addr),len); \
  89         } while (0)
  90 #define QDIO_DBF_TEXT(ex,name,level,text) \
  91         do { \
  92         if (ex) \
  93                 debug_text_exception(qdio_dbf_##name,level,text); \
  94         else \
  95                 debug_text_event(qdio_dbf_##name,level,text); \
  96         } while (0)
  97
  98
  99 #define QDIO_DBF_HEX0(ex,name,addr,len) QDIO_DBF_HEX(ex,name,0,addr,len)
 100 #define QDIO_DBF_HEX1(ex,name,addr,len) QDIO_DBF_HEX(ex,name,1,addr,len)
 101 #define QDIO_DBF_HEX2(ex,name,addr,len) QDIO_DBF_HEX(ex,name,2,addr,len)
 102 #ifdef CONFIG_QDIO_DEBUG
 103 #define QDIO_DBF_HEX3(ex,name,addr,len) QDIO_DBF_HEX(ex,name,3,addr,len)
 104 #define QDIO_DBF_HEX4(ex,name,addr,len) QDIO_DBF_HEX(ex,name,4,addr,len)
 105 #define QDIO_DBF_HEX5(ex,name,addr,len) QDIO_DBF_HEX(ex,name,5,addr,len)
 106 #define QDIO_DBF_HEX6(ex,name,addr,len) QDIO_DBF_HEX(ex,name,6,addr,len)
 107 #else /* CONFIG_QDIO_DEBUG */
 108 #define QDIO_DBF_HEX3(ex,name,addr,len) do {} while (0)
 109 #define QDIO_DBF_HEX4(ex,name,addr,len) do {} while (0)
 110 #define QDIO_DBF_HEX5(ex,name,addr,len) do {} while (0)
 111 #define QDIO_DBF_HEX6(ex,name,addr,len) do {} while (0)
 112 #endif /* CONFIG_QDIO_DEBUG */
 113
 114 #define QDIO_DBF_TEXT0(ex,name,text) QDIO_DBF_TEXT(ex,name,0,text)
 115 #define QDIO_DBF_TEXT1(ex,name,text) QDIO_DBF_TEXT(ex,name,1,text)
 116 #define QDIO_DBF_TEXT2(ex,name,text) QDIO_DBF_TEXT(ex,name,2,text)
 117 #ifdef CONFIG_QDIO_DEBUG
 118 #define QDIO_DBF_TEXT3(ex,name,text) QDIO_DBF_TEXT(ex,name,3,text)
 119 #define QDIO_DBF_TEXT4(ex,name,text) QDIO_DBF_TEXT(ex,name,4,text)
 120 #define QDIO_DBF_TEXT5(ex,name,text) QDIO_DBF_TEXT(ex,name,5,text)
 121 #define QDIO_DBF_TEXT6(ex,name,text) QDIO_DBF_TEXT(ex,name,6,text)
 122 #else /* CONFIG_QDIO_DEBUG */
 123 #define QDIO_DBF_TEXT3(ex,name,text) do {} while (0)
 124 #define QDIO_DBF_TEXT4(ex,name,text) do {} while (0)
 125 #define QDIO_DBF_TEXT5(ex,name,text) do {} while (0)
 126 #define QDIO_DBF_TEXT6(ex,name,text) do {} while (0)
 127 #endif /* CONFIG_QDIO_DEBUG */
 128
 129 #define QDIO_DBF_SETUP_NAME "qdio_setup"
 130 #define QDIO_DBF_SETUP_LEN 8
 131 #define QDIO_DBF_SETUP_PAGES 4
 132 #define QDIO_DBF_SETUP_NR_AREAS 1
 133 #ifdef CONFIG_QDIO_DEBUG
 134 #define QDIO_DBF_SETUP_LEVEL 6
 135 #else /* CONFIG_QDIO_DEBUG */
 136 #define QDIO_DBF_SETUP_LEVEL 2
 137 #endif /* CONFIG_QDIO_DEBUG */
 138
 139 #define QDIO_DBF_SBAL_NAME "qdio_labs" /* sbal */
 140 #define QDIO_DBF_SBAL_LEN 256
 141 #define QDIO_DBF_SBAL_PAGES 4
 142 #define QDIO_DBF_SBAL_NR_AREAS 2
 143 #ifdef CONFIG_QDIO_DEBUG
 144 #define QDIO_DBF_SBAL_LEVEL 6
 145 #else /* CONFIG_QDIO_DEBUG */
 146 #define QDIO_DBF_SBAL_LEVEL 2
 147 #endif /* CONFIG_QDIO_DEBUG */
 148
 149 #define QDIO_DBF_TRACE_NAME "qdio_trace"
 150 #define QDIO_DBF_TRACE_LEN 8
 151 #define QDIO_DBF_TRACE_NR_AREAS 2
 152 #ifdef CONFIG_QDIO_DEBUG
 153 #define QDIO_DBF_TRACE_PAGES 16
 154 #define QDIO_DBF_TRACE_LEVEL 4 /* -------- could be even more verbose here */
 155 #else /* CONFIG_QDIO_DEBUG */
 156 #define QDIO_DBF_TRACE_PAGES 4
 157 #define QDIO_DBF_TRACE_LEVEL 2
 158 #endif /* CONFIG_QDIO_DEBUG */
 159
 160 #define QDIO_DBF_SENSE_NAME "qdio_sense"
 161 #define QDIO_DBF_SENSE_LEN 64
 162 #define QDIO_DBF_SENSE_PAGES 2
 163 #define QDIO_DBF_SENSE_NR_AREAS 1
 164 #ifdef CONFIG_QDIO_DEBUG
 165 #define QDIO_DBF_SENSE_LEVEL 6
 166 #else /* CONFIG_QDIO_DEBUG */
 167 #define QDIO_DBF_SENSE_LEVEL 2
 168 #endif /* CONFIG_QDIO_DEBUG */
 169
 170 #ifdef CONFIG_QDIO_DEBUG
 171 #define QDIO_TRACE_QTYPE QDIO_ZFCP_QFMT
 172
 173 #define QDIO_DBF_SLSB_OUT_NAME "qdio_slsb_out"
 174 #define QDIO_DBF_SLSB_OUT_LEN QDIO_MAX_BUFFERS_PER_Q
 175 #define QDIO_DBF_SLSB_OUT_PAGES 256
 176 #define QDIO_DBF_SLSB_OUT_NR_AREAS 1
 177 #define QDIO_DBF_SLSB_OUT_LEVEL 6
 178
 179 #define QDIO_DBF_SLSB_IN_NAME "qdio_slsb_in"
 180 #define QDIO_DBF_SLSB_IN_LEN QDIO_MAX_BUFFERS_PER_Q
 181 #define QDIO_DBF_SLSB_IN_PAGES 256
 182 #define QDIO_DBF_SLSB_IN_NR_AREAS 1
 183 #define QDIO_DBF_SLSB_IN_LEVEL 6
 184 #endif /* CONFIG_QDIO_DEBUG */
 185
 186 #define QDIO_PRINTK_HEADER QDIO_NAME ": "
 187
 188 #if QDIO_VERBOSE_LEVEL>8
 189 #define QDIO_PRINT_STUPID(x...) printk( KERN_DEBUG QDIO_PRINTK_HEADER x)
 190 #else
 191 #define QDIO_PRINT_STUPID(x...) do { } while (0)
 192 #endif
 193
 194 #if QDIO_VERBOSE_LEVEL>7
 195 #define QDIO_PRINT_ALL(x...) printk( QDIO_PRINTK_HEADER x)
 196 #else
 197 #define QDIO_PRINT_ALL(x...) do { } while (0)
 198 #endif
 199
 200 #if QDIO_VERBOSE_LEVEL>6
 201 #define QDIO_PRINT_INFO(x...) printk( QDIO_PRINTK_HEADER x)
 202 #else
 203 #define QDIO_PRINT_INFO(x...) do { } while (0)
 204 #endif
 205
 206 #if QDIO_VERBOSE_LEVEL>5
 207 #define QDIO_PRINT_WARN(x...) printk( QDIO_PRINTK_HEADER x)
 208 #else
 209 #define QDIO_PRINT_WARN(x...) do { } while (0)
 210 #endif
 211
 212 #if QDIO_VERBOSE_LEVEL>4
 213 #define QDIO_PRINT_ERR(x...) printk( QDIO_PRINTK_HEADER x)
 214 #else
 215 #define QDIO_PRINT_ERR(x...) do { } while (0)
 216 #endif
 217
 218 #if QDIO_VERBOSE_LEVEL>3
 219 #define QDIO_PRINT_CRIT(x...) printk( QDIO_PRINTK_HEADER x)
 220 #else
 221 #define QDIO_PRINT_CRIT(x...) do { } while (0)
 222 #endif
 223
 224 #if QDIO_VERBOSE_LEVEL>2
 225 #define QDIO_PRINT_ALERT(x...) printk( QDIO_PRINTK_HEADER x)
 226 #else
 227 #define QDIO_PRINT_ALERT(x...) do { } while (0)
 228 #endif
 229
 230 #if QDIO_VERBOSE_LEVEL>1
 231 #define QDIO_PRINT_EMERG(x...) printk( QDIO_PRINTK_HEADER x)
 232 #else
 233 #define QDIO_PRINT_EMERG(x...) do { } while (0)
 234 #endif
 235
 236 #define QDIO_HEXDUMP16(importance,header,ptr) \
 237 QDIO_PRINT_##importance(header "%02x %02x %02x %02x  " \
 238                         "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
 239                         "%02x %02x %02x %02x\n",*(((char*)ptr)), \
 240                         *(((char*)ptr)+1),*(((char*)ptr)+2), \
 241                         *(((char*)ptr)+3),*(((char*)ptr)+4), \
 242                         *(((char*)ptr)+5),*(((char*)ptr)+6), \
 243                         *(((char*)ptr)+7),*(((char*)ptr)+8), \
 244                         *(((char*)ptr)+9),*(((char*)ptr)+10), \
 245                         *(((char*)ptr)+11),*(((char*)ptr)+12), \
 246                         *(((char*)ptr)+13),*(((char*)ptr)+14), \
 247                         *(((char*)ptr)+15)); \
 248 QDIO_PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
 249                         "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
 250                         *(((char*)ptr)+16),*(((char*)ptr)+17), \
 251                         *(((char*)ptr)+18),*(((char*)ptr)+19), \
 252                         *(((char*)ptr)+20),*(((char*)ptr)+21), \
 253                         *(((char*)ptr)+22),*(((char*)ptr)+23), \
 254                         *(((char*)ptr)+24),*(((char*)ptr)+25), \
 255                         *(((char*)ptr)+26),*(((char*)ptr)+27), \
 256                         *(((char*)ptr)+28),*(((char*)ptr)+29), \
 257                         *(((char*)ptr)+30),*(((char*)ptr)+31));
 258
 259 /****************** END OF DEBUG FACILITY STUFF *********************/
 260
 261 /*
 262  * Some instructions as assembly
 263  */
 264
 265 static inline int
 266 do_sqbs(unsigned long sch, unsigned char state, int queue,
 267        unsigned int *start, unsigned int *count)
 268 {
 269 #ifdef CONFIG_64BIT
 270        register unsigned long _ccq asm ("0") = *count;
 271        register unsigned long _sch asm ("1") = sch;
 272        unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
 273
 274        asm volatile(
 275                "        .insn   rsy,0xeb000000008A,%1,0,0(%2)"
 276                : "+d" (_ccq), "+d" (_queuestart)
 277                : "d" ((unsigned long)state), "d" (_sch)
 278                : "memory", "cc");
 279        *count = _ccq & 0xff;
 280        *start = _queuestart & 0xff;
 281
 282        return (_ccq >> 32) & 0xff;
 283 #else
 284        return 0;
 285 #endif
 286 }
 287
 288 static inline int
 289 do_eqbs(unsigned long sch, unsigned char *state, int queue,
 290         unsigned int *start, unsigned int *count)
 291 {
 292 #ifdef CONFIG_64BIT
 293         register unsigned long _ccq asm ("0") = *count;
 294         register unsigned long _sch asm ("1") = sch;
 295         unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
 296         unsigned long _state = 0;
 297
 298         asm volatile(
 299                 "       .insn   rrf,0xB99c0000,%1,%2,0,0"
 300                 : "+d" (_ccq), "+d" (_queuestart), "+d" (_state)
 301                 : "d" (_sch)
 302                 : "memory", "cc" );
 303         *count = _ccq & 0xff;
 304         *start = _queuestart & 0xff;
 305         *state = _state & 0xff;
 306
 307         return (_ccq >> 32) & 0xff;
 308 #else
 309         return 0;
 310 #endif
 311 }
 312
 313
 314 static inline int
 315 do_siga_sync(struct subchannel_id schid, unsigned int mask1, unsigned int mask2)
 316 {
 317         register unsigned long reg0 asm ("0") = 2;
 318         register struct subchannel_id reg1 asm ("1") = schid;
 319         register unsigned long reg2 asm ("2") = mask1;
 320         register unsigned long reg3 asm ("3") = mask2;
 321         int cc;
 322
 323         asm volatile(
 324                 "       siga    0\n"
 325                 "       ipm     %0\n"
 326                 "       srl     %0,28\n"
 327                 : "=d" (cc)
 328                 : "d" (reg0), "d" (reg1), "d" (reg2), "d" (reg3) : "cc");
 329         return cc;
 330 }
 331
 332 static inline int
 333 do_siga_input(struct subchannel_id schid, unsigned int mask)
 334 {
 335         register unsigned long reg0 asm ("0") = 1;
 336         register struct subchannel_id reg1 asm ("1") = schid;
 337         register unsigned long reg2 asm ("2") = mask;
 338         int cc;
 339
 340         asm volatile(
 341                 "       siga    0\n"
 342                 "       ipm     %0\n"
 343                 "       srl     %0,28\n"
 344                 : "=d" (cc)
 345                 : "d" (reg0), "d" (reg1), "d" (reg2) : "cc", "memory");
 346         return cc;
 347 }
 348
 349 static inline int
 350 do_siga_output(unsigned long schid, unsigned long mask, __u32 *bb,
 351                unsigned int fc)
 352 {
 353         register unsigned long __fc asm("0") = fc;
 354         register unsigned long __schid asm("1") = schid;
 355         register unsigned long __mask asm("2") = mask;
 356         int cc;
 357
 358         asm volatile(
 359                 "       siga    0\n"
 360                 "0:     ipm     %0\n"
 361                 "       srl     %0,28\n"
 362                 "1:\n"
 363                 EX_TABLE(0b,1b)
 364                 : "=d" (cc), "+d" (__fc), "+d" (__schid), "+d" (__mask)
 365                 : "0" (QDIO_SIGA_ERROR_ACCESS_EXCEPTION)
 366                 : "cc", "memory");
 367         (*bb) = ((unsigned int) __fc) >> 31;
 368         return cc;
 369 }
 370
 371 static inline unsigned long
 372 do_clear_global_summary(void)
 373 {
 374         register unsigned long __fn asm("1") = 3;
 375         register unsigned long __tmp asm("2");
 376         register unsigned long __time asm("3");
 377
 378         asm volatile(
 379                 "       .insn   rre,0xb2650000,2,0"
 380                 : "+d" (__fn), "=d" (__tmp), "=d" (__time));
 381         return __time;
 382 }
 383
 384 /*
 385  * QDIO device commands returned by extended Sense-ID
 386  */
 387 #define DEFAULT_ESTABLISH_QS_CMD 0x1b
 388 #define DEFAULT_ESTABLISH_QS_COUNT 0x1000
 389 #define DEFAULT_ACTIVATE_QS_CMD 0x1f
 390 #define DEFAULT_ACTIVATE_QS_COUNT 0
 391
 392 /*
 393  * additional CIWs returned by extended Sense-ID
 394  */
 395 #define CIW_TYPE_EQUEUE 0x3       /* establish QDIO queues */
 396 #define CIW_TYPE_AQUEUE 0x4       /* activate QDIO queues */
 397
 398 #define QDIO_CHSC_RESPONSE_CODE_OK 1
 399 /* flags for st qdio sch data */
 400 #define CHSC_FLAG_QDIO_CAPABILITY 0x80
 401 #define CHSC_FLAG_VALIDITY 0x40
 402
 403 #define CHSC_FLAG_SIGA_INPUT_NECESSARY 0x40
 404 #define CHSC_FLAG_SIGA_OUTPUT_NECESSARY 0x20
 405 #define CHSC_FLAG_SIGA_SYNC_NECESSARY 0x10
 406 #define CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS 0x08
 407 #define CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS 0x04
 408
 409 struct qdio_perf_stats {
 410 #ifdef CONFIG_64BIT
 411         atomic64_t tl_runs;
 412         atomic64_t outbound_tl_runs;
 413         atomic64_t outbound_tl_runs_resched;
 414         atomic64_t inbound_tl_runs;
 415         atomic64_t inbound_tl_runs_resched;
 416         atomic64_t inbound_thin_tl_runs;
 417         atomic64_t inbound_thin_tl_runs_resched;
 418
 419         atomic64_t siga_outs;
 420         atomic64_t siga_ins;
 421         atomic64_t siga_syncs;
 422         atomic64_t pcis;
 423         atomic64_t thinints;
 424         atomic64_t fast_reqs;
 425
 426         atomic64_t outbound_cnt;
 427         atomic64_t inbound_cnt;
 428 #else /* CONFIG_64BIT */
 429         atomic_t tl_runs;
 430         atomic_t outbound_tl_runs;
 431         atomic_t outbound_tl_runs_resched;
 432         atomic_t inbound_tl_runs;
 433         atomic_t inbound_tl_runs_resched;
 434         atomic_t inbound_thin_tl_runs;
 435         atomic_t inbound_thin_tl_runs_resched;
 436
 437         atomic_t siga_outs;
 438         atomic_t siga_ins;
 439         atomic_t siga_syncs;
 440         atomic_t pcis;
 441         atomic_t thinints;
 442         atomic_t fast_reqs;
 443
 444         atomic_t outbound_cnt;
 445         atomic_t inbound_cnt;
 446 #endif /* CONFIG_64BIT */
 447 };
 448
 449 /* unlikely as the later the better */
 450 #define SYNC_MEMORY if (unlikely(q->siga_sync)) qdio_siga_sync_q(q)
 451 #define SYNC_MEMORY_ALL if (unlikely(q->siga_sync)) \
 452         qdio_siga_sync(q,~0U,~0U)
 453 #define SYNC_MEMORY_ALL_OUTB if (unlikely(q->siga_sync)) \
 454         qdio_siga_sync(q,~0U,0)
 455
 456 #define NOW qdio_get_micros()
 457 #define SAVE_TIMESTAMP(q) q->timing.last_transfer_time=NOW
 458 #define GET_SAVED_TIMESTAMP(q) (q->timing.last_transfer_time)
 459 #define SAVE_FRONTIER(q,val) q->last_move_ftc=val
 460 #define GET_SAVED_FRONTIER(q) (q->last_move_ftc)
 461
 462 #define MY_MODULE_STRING(x) #x
 463
 464 #ifdef CONFIG_64BIT
 465 #define QDIO_GET_ADDR(x) ((__u32)(unsigned long)x)
 466 #else /* CONFIG_64BIT */
 467 #define QDIO_GET_ADDR(x) ((__u32)(long)x)
 468 #endif /* CONFIG_64BIT */
 469
 470 struct qdio_q {
 471         volatile struct slsb slsb;
 472
 473         char unused[QDIO_MAX_BUFFERS_PER_Q];
 474
 475         __u32 * dev_st_chg_ind;
 476
 477         int is_input_q;
 478         struct subchannel_id schid;
 479         struct ccw_device *cdev;
 480
 481         unsigned int is_iqdio_q;
 482         unsigned int is_thinint_q;
 483
 484         /* bit 0 means queue 0, bit 1 means queue 1, ... */
 485         unsigned int mask;
 486         unsigned int q_no;
 487
 488         qdio_handler_t (*handler);
 489
 490         /* points to the next buffer to be checked for having
 491          * been processed by the card (outbound)
 492          * or to the next buffer the program should check for (inbound) */
 493         volatile int first_to_check;
 494         /* and the last time it was: */
 495         volatile int last_move_ftc;
 496
 497         atomic_t number_of_buffers_used;
 498         atomic_t polling;
 499
 500         unsigned int siga_in;
 501         unsigned int siga_out;
 502         unsigned int siga_sync;
 503         unsigned int siga_sync_done_on_thinints;
 504         unsigned int siga_sync_done_on_outb_tis;
 505         unsigned int hydra_gives_outbound_pcis;
 506
 507         /* used to save beginning position when calling dd_handlers */
 508         int first_element_to_kick;
 509
 510         atomic_t use_count;
 511         atomic_t is_in_shutdown;
 512
 513         void *irq_ptr;
 514
 515         struct timer_list timer;
 516 #ifdef QDIO_USE_TIMERS_FOR_POLLING
 517         atomic_t timer_already_set;
 518         spinlock_t timer_lock;
 519 #else /* QDIO_USE_TIMERS_FOR_POLLING */
 520         struct tasklet_struct tasklet;
 521 #endif /* QDIO_USE_TIMERS_FOR_POLLING */
 522
 523
 524         enum qdio_irq_states state;
 525
 526         /* used to store the error condition during a data transfer */
 527         unsigned int qdio_error;
 528         unsigned int siga_error;
 529         unsigned int error_status_flags;
 530
 531         /* list of interesting queues */
 532         volatile struct qdio_q *list_next;
 533         volatile struct qdio_q *list_prev;
 534
 535         struct sl *sl;
 536         volatile struct sbal *sbal[QDIO_MAX_BUFFERS_PER_Q];
 537
 538         struct qdio_buffer *qdio_buffers[QDIO_MAX_BUFFERS_PER_Q];
 539
 540         unsigned long int_parm;
 541
 542         /*struct {
 543                 int in_bh_check_limit;
 544                 int threshold;
 545         } threshold_classes[QDIO_STATS_CLASSES];*/
 546
 547         struct {
 548                 /* inbound: the time to stop polling
 549                    outbound: the time to kick peer */
 550                 int threshold; /* the real value */
 551
 552                 /* outbound: last time of do_QDIO
 553                    inbound: last time of noticing incoming data */
 554                 /*__u64 last_transfer_times[QDIO_STATS_NUMBER];
 555                 int last_transfer_index; */
 556
 557                 __u64 last_transfer_time;
 558                 __u64 busy_start;
 559         } timing;
 560         atomic_t busy_siga_counter;
 561         unsigned int queue_type;
 562         unsigned int is_pci_out;
 563
 564         /* leave this member at the end. won't be cleared in qdio_fill_qs */
 565         struct slib *slib; /* a page is allocated under this pointer,
 566                               sl points into this page, offset PAGE_SIZE/2
 567                               (after slib) */
 568 } __attribute__ ((aligned(256)));
 569
 570 struct qdio_irq {
 571         __u32 * volatile dev_st_chg_ind;
 572
 573         unsigned long int_parm;
 574         struct subchannel_id schid;
 575
 576         unsigned int is_iqdio_irq;
 577         unsigned int is_thinint_irq;
 578         unsigned int hydra_gives_outbound_pcis;
 579         unsigned int sync_done_on_outb_pcis;
 580
 581         /* QEBSM facility */
 582         unsigned int is_qebsm;
 583         unsigned long sch_token;
 584
 585         enum qdio_irq_states state;
 586
 587         unsigned int no_input_qs;
 588         unsigned int no_output_qs;
 589
 590         unsigned char qdioac;
 591
 592         struct ccw1 ccw;
 593
 594         struct ciw equeue;
 595         struct ciw aqueue;
 596
 597         struct qib qib;
 598
 599         void (*original_int_handler) (struct ccw_device *,
 600                                       unsigned long, struct irb *);
 601
 602         /* leave these four members together at the end. won't be cleared in qdio_fill_irq */
 603         struct qdr *qdr;
 604         struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
 605         struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];
 606         struct semaphore setting_up_sema;
 607 };
 608 #endif