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1da177e4 LT |
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 | ||
fb6958a5 | 59 | #define VERSION_QDIO_C "$Revision: 1.114 $" |
1da177e4 LT |
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; | |
8129ee16 | 79 | static int is_passthrough = 0; |
1da177e4 LT |
80 | static int omit_svs; |
81 | ||
82 | static int indicator_used[INDICATORS_PER_CACHELINE]; | |
83 | static __u32 * volatile indicators; | |
84 | static __u32 volatile spare_indicator; | |
85 | static atomic_t spare_indicator_usecount; | |
86 | ||
87 | static debug_info_t *qdio_dbf_setup; | |
88 | static debug_info_t *qdio_dbf_sbal; | |
89 | static debug_info_t *qdio_dbf_trace; | |
90 | static debug_info_t *qdio_dbf_sense; | |
91 | #ifdef CONFIG_QDIO_DEBUG | |
92 | static debug_info_t *qdio_dbf_slsb_out; | |
93 | static debug_info_t *qdio_dbf_slsb_in; | |
94 | #endif /* CONFIG_QDIO_DEBUG */ | |
95 | ||
96 | /* iQDIO stuff: */ | |
97 | static volatile struct qdio_q *tiq_list=NULL; /* volatile as it could change | |
98 | during a while loop */ | |
99 | static DEFINE_SPINLOCK(ttiq_list_lock); | |
100 | static int register_thinint_result; | |
101 | static void tiqdio_tl(unsigned long); | |
102 | static DECLARE_TASKLET(tiqdio_tasklet,tiqdio_tl,0); | |
103 | ||
104 | /* not a macro, as one of the arguments is atomic_read */ | |
105 | static inline int | |
106 | qdio_min(int a,int b) | |
107 | { | |
108 | if (a<b) | |
109 | return a; | |
110 | else | |
111 | return b; | |
112 | } | |
113 | ||
114 | /***************** SCRUBBER HELPER ROUTINES **********************/ | |
115 | ||
a46206e7 | 116 | static inline __u64 |
1da177e4 LT |
117 | qdio_get_micros(void) |
118 | { | |
119 | return (get_clock() >> 10); /* time>>12 is microseconds */ | |
120 | } | |
121 | ||
122 | /* | |
123 | * unfortunately, we can't just xchg the values; in do_QDIO we want to reserve | |
124 | * the q in any case, so that we'll not be interrupted when we are in | |
125 | * qdio_mark_tiq... shouldn't have a really bad impact, as reserving almost | |
126 | * ever works (last famous words) | |
127 | */ | |
128 | static inline int | |
129 | qdio_reserve_q(struct qdio_q *q) | |
130 | { | |
131 | return atomic_add_return(1,&q->use_count) - 1; | |
132 | } | |
133 | ||
134 | static inline void | |
135 | qdio_release_q(struct qdio_q *q) | |
136 | { | |
137 | atomic_dec(&q->use_count); | |
138 | } | |
139 | ||
8129ee16 FP |
140 | /*check ccq */ |
141 | static inline int | |
142 | qdio_check_ccq(struct qdio_q *q, unsigned int ccq) | |
1da177e4 | 143 | { |
8129ee16 FP |
144 | char dbf_text[15]; |
145 | ||
146 | if (ccq == 0 || ccq == 32 || ccq == 96) | |
147 | return 0; | |
148 | if (ccq == 97) | |
149 | return 1; | |
150 | /*notify devices immediately*/ | |
151 | sprintf(dbf_text,"%d", ccq); | |
152 | QDIO_DBF_TEXT2(1,trace,dbf_text); | |
153 | return -EIO; | |
1da177e4 | 154 | } |
8129ee16 FP |
155 | /* EQBS: extract buffer states */ |
156 | static inline int | |
157 | qdio_do_eqbs(struct qdio_q *q, unsigned char *state, | |
158 | unsigned int *start, unsigned int *cnt) | |
159 | { | |
160 | struct qdio_irq *irq; | |
161 | unsigned int tmp_cnt, q_no, ccq; | |
162 | int rc ; | |
163 | char dbf_text[15]; | |
1da177e4 | 164 | |
8129ee16 FP |
165 | ccq = 0; |
166 | tmp_cnt = *cnt; | |
167 | irq = (struct qdio_irq*)q->irq_ptr; | |
168 | q_no = q->q_no; | |
169 | if(!q->is_input_q) | |
170 | q_no += irq->no_input_qs; | |
171 | ccq = do_eqbs(irq->sch_token, state, q_no, start, cnt); | |
172 | rc = qdio_check_ccq(q, ccq); | |
173 | if (rc < 0) { | |
174 | QDIO_DBF_TEXT2(1,trace,"eqberr"); | |
175 | sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt, *cnt, ccq, q_no); | |
176 | QDIO_DBF_TEXT2(1,trace,dbf_text); | |
177 | q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION| | |
178 | QDIO_STATUS_LOOK_FOR_ERROR, | |
179 | 0, 0, 0, -1, -1, q->int_parm); | |
180 | return 0; | |
181 | } | |
182 | return (tmp_cnt - *cnt); | |
183 | } | |
184 | ||
185 | /* SQBS: set buffer states */ | |
186 | static inline int | |
187 | qdio_do_sqbs(struct qdio_q *q, unsigned char state, | |
188 | unsigned int *start, unsigned int *cnt) | |
189 | { | |
190 | struct qdio_irq *irq; | |
191 | unsigned int tmp_cnt, q_no, ccq; | |
192 | int rc; | |
193 | char dbf_text[15]; | |
194 | ||
195 | ccq = 0; | |
196 | tmp_cnt = *cnt; | |
197 | irq = (struct qdio_irq*)q->irq_ptr; | |
198 | q_no = q->q_no; | |
199 | if(!q->is_input_q) | |
200 | q_no += irq->no_input_qs; | |
201 | ccq = do_sqbs(irq->sch_token, state, q_no, start, cnt); | |
202 | rc = qdio_check_ccq(q, ccq); | |
203 | if (rc < 0) { | |
204 | QDIO_DBF_TEXT3(1,trace,"sqberr"); | |
205 | sprintf(dbf_text,"%2x,%2x,%d,%d",tmp_cnt,*cnt,ccq,q_no); | |
206 | QDIO_DBF_TEXT3(1,trace,dbf_text); | |
207 | q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION| | |
208 | QDIO_STATUS_LOOK_FOR_ERROR, | |
209 | 0, 0, 0, -1, -1, q->int_parm); | |
210 | return 0; | |
211 | } | |
212 | return (tmp_cnt - *cnt); | |
213 | } | |
214 | ||
215 | static inline int | |
216 | qdio_set_slsb(struct qdio_q *q, unsigned int *bufno, | |
217 | unsigned char state, unsigned int *count) | |
218 | { | |
219 | volatile char *slsb; | |
220 | struct qdio_irq *irq; | |
221 | ||
222 | irq = (struct qdio_irq*)q->irq_ptr; | |
223 | if (!irq->is_qebsm) { | |
224 | slsb = (char *)&q->slsb.acc.val[(*bufno)]; | |
225 | xchg(slsb, state); | |
226 | return 1; | |
227 | } | |
228 | return qdio_do_sqbs(q, state, bufno, count); | |
229 | } | |
230 | ||
231 | #ifdef CONFIG_QDIO_DEBUG | |
232 | static inline void | |
233 | qdio_trace_slsb(struct qdio_q *q) | |
234 | { | |
235 | if (q->queue_type==QDIO_TRACE_QTYPE) { | |
236 | if (q->is_input_q) | |
237 | QDIO_DBF_HEX2(0,slsb_in,&q->slsb, | |
238 | QDIO_MAX_BUFFERS_PER_Q); | |
239 | else | |
240 | QDIO_DBF_HEX2(0,slsb_out,&q->slsb, | |
241 | QDIO_MAX_BUFFERS_PER_Q); | |
242 | } | |
243 | } | |
244 | #endif | |
245 | ||
246 | static inline int | |
247 | set_slsb(struct qdio_q *q, unsigned int *bufno, | |
248 | unsigned char state, unsigned int *count) | |
249 | { | |
250 | int rc; | |
251 | #ifdef CONFIG_QDIO_DEBUG | |
252 | qdio_trace_slsb(q); | |
253 | #endif | |
254 | rc = qdio_set_slsb(q, bufno, state, count); | |
255 | #ifdef CONFIG_QDIO_DEBUG | |
256 | qdio_trace_slsb(q); | |
257 | #endif | |
258 | return rc; | |
259 | } | |
1da177e4 LT |
260 | static inline int |
261 | qdio_siga_sync(struct qdio_q *q, unsigned int gpr2, | |
262 | unsigned int gpr3) | |
263 | { | |
264 | int cc; | |
265 | ||
266 | QDIO_DBF_TEXT4(0,trace,"sigasync"); | |
267 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
268 | ||
269 | #ifdef QDIO_PERFORMANCE_STATS | |
270 | perf_stats.siga_syncs++; | |
271 | #endif /* QDIO_PERFORMANCE_STATS */ | |
272 | ||
a8237fc4 | 273 | cc = do_siga_sync(q->schid, gpr2, gpr3); |
1da177e4 LT |
274 | if (cc) |
275 | QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*)); | |
276 | ||
277 | return cc; | |
278 | } | |
279 | ||
280 | static inline int | |
281 | qdio_siga_sync_q(struct qdio_q *q) | |
282 | { | |
283 | if (q->is_input_q) | |
284 | return qdio_siga_sync(q, 0, q->mask); | |
285 | return qdio_siga_sync(q, q->mask, 0); | |
286 | } | |
287 | ||
8129ee16 FP |
288 | static int |
289 | __do_siga_output(struct qdio_q *q, unsigned int *busy_bit) | |
290 | { | |
291 | struct qdio_irq *irq; | |
292 | unsigned int fc = 0; | |
a8237fc4 | 293 | unsigned long schid; |
8129ee16 FP |
294 | |
295 | irq = (struct qdio_irq *) q->irq_ptr; | |
296 | if (!irq->is_qebsm) | |
a8237fc4 CH |
297 | schid = *((u32 *)&q->schid); |
298 | else { | |
299 | schid = irq->sch_token; | |
300 | fc |= 0x80; | |
301 | } | |
302 | return do_siga_output(schid, q->mask, busy_bit, fc); | |
8129ee16 FP |
303 | } |
304 | ||
1da177e4 LT |
305 | /* |
306 | * returns QDIO_SIGA_ERROR_ACCESS_EXCEPTION as cc, when SIGA returns | |
307 | * an access exception | |
308 | */ | |
309 | static inline int | |
310 | qdio_siga_output(struct qdio_q *q) | |
311 | { | |
312 | int cc; | |
313 | __u32 busy_bit; | |
314 | __u64 start_time=0; | |
315 | ||
316 | #ifdef QDIO_PERFORMANCE_STATS | |
317 | perf_stats.siga_outs++; | |
318 | #endif /* QDIO_PERFORMANCE_STATS */ | |
319 | ||
320 | QDIO_DBF_TEXT4(0,trace,"sigaout"); | |
321 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
322 | ||
323 | for (;;) { | |
8129ee16 | 324 | cc = __do_siga_output(q, &busy_bit); |
1da177e4 LT |
325 | //QDIO_PRINT_ERR("cc=%x, busy=%x\n",cc,busy_bit); |
326 | if ((cc==2) && (busy_bit) && (q->is_iqdio_q)) { | |
327 | if (!start_time) | |
328 | start_time=NOW; | |
329 | if ((NOW-start_time)>QDIO_BUSY_BIT_PATIENCE) | |
330 | break; | |
331 | } else | |
332 | break; | |
333 | } | |
334 | ||
335 | if ((cc==2) && (busy_bit)) | |
336 | cc |= QDIO_SIGA_ERROR_B_BIT_SET; | |
337 | ||
338 | if (cc) | |
339 | QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*)); | |
340 | ||
341 | return cc; | |
342 | } | |
343 | ||
344 | static inline int | |
345 | qdio_siga_input(struct qdio_q *q) | |
346 | { | |
347 | int cc; | |
348 | ||
349 | QDIO_DBF_TEXT4(0,trace,"sigain"); | |
350 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
351 | ||
352 | #ifdef QDIO_PERFORMANCE_STATS | |
353 | perf_stats.siga_ins++; | |
354 | #endif /* QDIO_PERFORMANCE_STATS */ | |
355 | ||
a8237fc4 | 356 | cc = do_siga_input(q->schid, q->mask); |
1da177e4 LT |
357 | |
358 | if (cc) | |
359 | QDIO_DBF_HEX3(0,trace,&cc,sizeof(int*)); | |
360 | ||
361 | return cc; | |
362 | } | |
363 | ||
364 | /* locked by the locks in qdio_activate and qdio_cleanup */ | |
8129ee16 | 365 | static __u32 * |
1da177e4 LT |
366 | qdio_get_indicator(void) |
367 | { | |
368 | int i; | |
369 | ||
370 | for (i=1;i<INDICATORS_PER_CACHELINE;i++) | |
371 | if (!indicator_used[i]) { | |
372 | indicator_used[i]=1; | |
373 | return indicators+i; | |
374 | } | |
375 | atomic_inc(&spare_indicator_usecount); | |
376 | return (__u32 * volatile) &spare_indicator; | |
377 | } | |
378 | ||
379 | /* locked by the locks in qdio_activate and qdio_cleanup */ | |
380 | static void | |
381 | qdio_put_indicator(__u32 *addr) | |
382 | { | |
383 | int i; | |
384 | ||
385 | if ( (addr) && (addr!=&spare_indicator) ) { | |
386 | i=addr-indicators; | |
387 | indicator_used[i]=0; | |
388 | } | |
389 | if (addr == &spare_indicator) | |
390 | atomic_dec(&spare_indicator_usecount); | |
391 | } | |
392 | ||
8129ee16 | 393 | static inline void |
1da177e4 LT |
394 | tiqdio_clear_summary_bit(__u32 *location) |
395 | { | |
396 | QDIO_DBF_TEXT5(0,trace,"clrsummb"); | |
397 | QDIO_DBF_HEX5(0,trace,&location,sizeof(void*)); | |
398 | ||
399 | xchg(location,0); | |
400 | } | |
401 | ||
8129ee16 | 402 | static inline void |
1da177e4 LT |
403 | tiqdio_set_summary_bit(__u32 *location) |
404 | { | |
405 | QDIO_DBF_TEXT5(0,trace,"setsummb"); | |
406 | QDIO_DBF_HEX5(0,trace,&location,sizeof(void*)); | |
407 | ||
408 | xchg(location,-1); | |
409 | } | |
410 | ||
411 | static inline void | |
412 | tiqdio_sched_tl(void) | |
413 | { | |
414 | tasklet_hi_schedule(&tiqdio_tasklet); | |
415 | } | |
416 | ||
417 | static inline void | |
418 | qdio_mark_tiq(struct qdio_q *q) | |
419 | { | |
420 | unsigned long flags; | |
421 | ||
422 | QDIO_DBF_TEXT4(0,trace,"mark iq"); | |
423 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
424 | ||
425 | spin_lock_irqsave(&ttiq_list_lock,flags); | |
426 | if (unlikely(atomic_read(&q->is_in_shutdown))) | |
427 | goto out_unlock; | |
428 | ||
429 | if (!q->is_input_q) | |
430 | goto out_unlock; | |
431 | ||
432 | if ((q->list_prev) || (q->list_next)) | |
433 | goto out_unlock; | |
434 | ||
435 | if (!tiq_list) { | |
436 | tiq_list=q; | |
437 | q->list_prev=q; | |
438 | q->list_next=q; | |
439 | } else { | |
440 | q->list_next=tiq_list; | |
441 | q->list_prev=tiq_list->list_prev; | |
442 | tiq_list->list_prev->list_next=q; | |
443 | tiq_list->list_prev=q; | |
444 | } | |
445 | spin_unlock_irqrestore(&ttiq_list_lock,flags); | |
446 | ||
447 | tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind); | |
448 | tiqdio_sched_tl(); | |
449 | return; | |
450 | out_unlock: | |
451 | spin_unlock_irqrestore(&ttiq_list_lock,flags); | |
452 | return; | |
453 | } | |
454 | ||
455 | static inline void | |
456 | qdio_mark_q(struct qdio_q *q) | |
457 | { | |
458 | QDIO_DBF_TEXT4(0,trace,"mark q"); | |
459 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
460 | ||
461 | if (unlikely(atomic_read(&q->is_in_shutdown))) | |
462 | return; | |
463 | ||
464 | tasklet_schedule(&q->tasklet); | |
465 | } | |
466 | ||
467 | static inline int | |
468 | qdio_stop_polling(struct qdio_q *q) | |
469 | { | |
470 | #ifdef QDIO_USE_PROCESSING_STATE | |
8129ee16 FP |
471 | unsigned int tmp, gsf, count = 1; |
472 | unsigned char state = 0; | |
473 | struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr; | |
1da177e4 LT |
474 | |
475 | if (!atomic_swap(&q->polling,0)) | |
476 | return 1; | |
477 | ||
478 | QDIO_DBF_TEXT4(0,trace,"stoppoll"); | |
479 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
480 | ||
481 | /* show the card that we are not polling anymore */ | |
482 | if (!q->is_input_q) | |
483 | return 1; | |
484 | ||
8129ee16 FP |
485 | tmp = gsf = GET_SAVED_FRONTIER(q); |
486 | tmp = ((tmp + QDIO_MAX_BUFFERS_PER_Q-1) & (QDIO_MAX_BUFFERS_PER_Q-1) ); | |
487 | set_slsb(q, &tmp, SLSB_P_INPUT_NOT_INIT, &count); | |
488 | ||
1da177e4 LT |
489 | /* |
490 | * we don't issue this SYNC_MEMORY, as we trust Rick T and | |
491 | * moreover will not use the PROCESSING state under VM, so | |
492 | * q->polling was 0 anyway | |
493 | */ | |
494 | /*SYNC_MEMORY;*/ | |
8129ee16 FP |
495 | if (irq->is_qebsm) { |
496 | count = 1; | |
497 | qdio_do_eqbs(q, &state, &gsf, &count); | |
498 | } else | |
499 | state = q->slsb.acc.val[gsf]; | |
500 | if (state != SLSB_P_INPUT_PRIMED) | |
1da177e4 LT |
501 | return 1; |
502 | /* | |
503 | * set our summary bit again, as otherwise there is a | |
504 | * small window we can miss between resetting it and | |
505 | * checking for PRIMED state | |
506 | */ | |
507 | if (q->is_thinint_q) | |
508 | tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind); | |
509 | return 0; | |
510 | ||
511 | #else /* QDIO_USE_PROCESSING_STATE */ | |
512 | return 1; | |
513 | #endif /* QDIO_USE_PROCESSING_STATE */ | |
514 | } | |
515 | ||
516 | /* | |
517 | * see the comment in do_QDIO and before qdio_reserve_q about the | |
518 | * sophisticated locking outside of unmark_q, so that we don't need to | |
519 | * disable the interrupts :-) | |
520 | */ | |
521 | static inline void | |
522 | qdio_unmark_q(struct qdio_q *q) | |
523 | { | |
524 | unsigned long flags; | |
525 | ||
526 | QDIO_DBF_TEXT4(0,trace,"unmark q"); | |
527 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
528 | ||
529 | if ((!q->list_prev)||(!q->list_next)) | |
530 | return; | |
531 | ||
532 | if ((q->is_thinint_q)&&(q->is_input_q)) { | |
533 | /* iQDIO */ | |
534 | spin_lock_irqsave(&ttiq_list_lock,flags); | |
535 | /* in case cleanup has done this already and simultanously | |
536 | * qdio_unmark_q is called from the interrupt handler, we've | |
537 | * got to check this in this specific case again */ | |
538 | if ((!q->list_prev)||(!q->list_next)) | |
539 | goto out; | |
540 | if (q->list_next==q) { | |
541 | /* q was the only interesting q */ | |
542 | tiq_list=NULL; | |
543 | q->list_next=NULL; | |
544 | q->list_prev=NULL; | |
545 | } else { | |
546 | q->list_next->list_prev=q->list_prev; | |
547 | q->list_prev->list_next=q->list_next; | |
548 | tiq_list=q->list_next; | |
549 | q->list_next=NULL; | |
550 | q->list_prev=NULL; | |
551 | } | |
552 | out: | |
553 | spin_unlock_irqrestore(&ttiq_list_lock,flags); | |
554 | } | |
555 | } | |
556 | ||
557 | static inline unsigned long | |
558 | tiqdio_clear_global_summary(void) | |
559 | { | |
560 | unsigned long time; | |
561 | ||
562 | QDIO_DBF_TEXT5(0,trace,"clrglobl"); | |
563 | ||
564 | time = do_clear_global_summary(); | |
565 | ||
566 | QDIO_DBF_HEX5(0,trace,&time,sizeof(unsigned long)); | |
567 | ||
568 | return time; | |
569 | } | |
570 | ||
571 | ||
572 | /************************* OUTBOUND ROUTINES *******************************/ | |
8129ee16 FP |
573 | static int |
574 | qdio_qebsm_get_outbound_buffer_frontier(struct qdio_q *q) | |
575 | { | |
576 | struct qdio_irq *irq; | |
577 | unsigned char state; | |
578 | unsigned int cnt, count, ftc; | |
579 | ||
580 | irq = (struct qdio_irq *) q->irq_ptr; | |
581 | if ((!q->is_iqdio_q) && (!q->hydra_gives_outbound_pcis)) | |
582 | SYNC_MEMORY; | |
583 | ||
584 | ftc = q->first_to_check; | |
585 | count = qdio_min(atomic_read(&q->number_of_buffers_used), | |
586 | (QDIO_MAX_BUFFERS_PER_Q-1)); | |
587 | if (count == 0) | |
588 | return q->first_to_check; | |
589 | cnt = qdio_do_eqbs(q, &state, &ftc, &count); | |
590 | if (cnt == 0) | |
591 | return q->first_to_check; | |
592 | switch (state) { | |
593 | case SLSB_P_OUTPUT_ERROR: | |
594 | QDIO_DBF_TEXT3(0,trace,"outperr"); | |
595 | atomic_sub(cnt , &q->number_of_buffers_used); | |
596 | if (q->qdio_error) | |
597 | q->error_status_flags |= | |
598 | QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR; | |
599 | q->qdio_error = SLSB_P_OUTPUT_ERROR; | |
600 | q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR; | |
601 | q->first_to_check = ftc; | |
602 | break; | |
603 | case SLSB_P_OUTPUT_EMPTY: | |
604 | QDIO_DBF_TEXT5(0,trace,"outpempt"); | |
605 | atomic_sub(cnt, &q->number_of_buffers_used); | |
606 | q->first_to_check = ftc; | |
607 | break; | |
608 | case SLSB_CU_OUTPUT_PRIMED: | |
609 | /* all buffers primed */ | |
610 | QDIO_DBF_TEXT5(0,trace,"outpprim"); | |
611 | break; | |
612 | default: | |
613 | break; | |
614 | } | |
615 | QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int)); | |
616 | return q->first_to_check; | |
617 | } | |
618 | ||
619 | static int | |
620 | qdio_qebsm_get_inbound_buffer_frontier(struct qdio_q *q) | |
621 | { | |
622 | struct qdio_irq *irq; | |
623 | unsigned char state; | |
624 | int tmp, ftc, count, cnt; | |
625 | char dbf_text[15]; | |
626 | ||
627 | ||
628 | irq = (struct qdio_irq *) q->irq_ptr; | |
629 | ftc = q->first_to_check; | |
630 | count = qdio_min(atomic_read(&q->number_of_buffers_used), | |
631 | (QDIO_MAX_BUFFERS_PER_Q-1)); | |
632 | if (count == 0) | |
633 | return q->first_to_check; | |
634 | cnt = qdio_do_eqbs(q, &state, &ftc, &count); | |
635 | if (cnt == 0) | |
636 | return q->first_to_check; | |
637 | switch (state) { | |
638 | case SLSB_P_INPUT_ERROR : | |
639 | #ifdef CONFIG_QDIO_DEBUG | |
640 | QDIO_DBF_TEXT3(1,trace,"inperr"); | |
641 | sprintf(dbf_text,"%2x,%2x",ftc,count); | |
642 | QDIO_DBF_TEXT3(1,trace,dbf_text); | |
643 | #endif /* CONFIG_QDIO_DEBUG */ | |
644 | if (q->qdio_error) | |
645 | q->error_status_flags |= | |
646 | QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR; | |
647 | q->qdio_error = SLSB_P_INPUT_ERROR; | |
648 | q->error_status_flags |= QDIO_STATUS_LOOK_FOR_ERROR; | |
649 | atomic_sub(cnt, &q->number_of_buffers_used); | |
650 | q->first_to_check = ftc; | |
651 | break; | |
652 | case SLSB_P_INPUT_PRIMED : | |
653 | QDIO_DBF_TEXT3(0,trace,"inptprim"); | |
654 | sprintf(dbf_text,"%2x,%2x",ftc,count); | |
655 | QDIO_DBF_TEXT3(1,trace,dbf_text); | |
656 | tmp = 0; | |
657 | ftc = q->first_to_check; | |
658 | #ifdef QDIO_USE_PROCESSING_STATE | |
659 | if (cnt > 1) { | |
660 | cnt -= 1; | |
661 | tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt); | |
662 | if (!tmp) | |
663 | break; | |
664 | } | |
665 | cnt = 1; | |
666 | tmp += set_slsb(q, &ftc, | |
667 | SLSB_P_INPUT_PROCESSING, &cnt); | |
668 | atomic_set(&q->polling, 1); | |
669 | #else | |
670 | tmp = set_slsb(q, &ftc, SLSB_P_INPUT_NOT_INIT, &cnt); | |
671 | #endif | |
672 | atomic_sub(tmp, &q->number_of_buffers_used); | |
673 | q->first_to_check = ftc; | |
674 | break; | |
675 | case SLSB_CU_INPUT_EMPTY: | |
676 | case SLSB_P_INPUT_NOT_INIT: | |
677 | case SLSB_P_INPUT_PROCESSING: | |
678 | QDIO_DBF_TEXT5(0,trace,"inpnipro"); | |
679 | break; | |
680 | default: | |
681 | break; | |
682 | } | |
683 | QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int)); | |
684 | return q->first_to_check; | |
685 | } | |
1da177e4 | 686 | |
77933d72 | 687 | static inline int |
1da177e4 LT |
688 | qdio_get_outbound_buffer_frontier(struct qdio_q *q) |
689 | { | |
8129ee16 FP |
690 | struct qdio_irq *irq; |
691 | volatile char *slsb; | |
692 | unsigned int count = 1; | |
693 | int first_not_to_check, f, f_mod_no; | |
1da177e4 LT |
694 | char dbf_text[15]; |
695 | ||
696 | QDIO_DBF_TEXT4(0,trace,"getobfro"); | |
697 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
698 | ||
8129ee16 FP |
699 | irq = (struct qdio_irq *) q->irq_ptr; |
700 | if (irq->is_qebsm) | |
701 | return qdio_qebsm_get_outbound_buffer_frontier(q); | |
702 | ||
1da177e4 LT |
703 | slsb=&q->slsb.acc.val[0]; |
704 | f_mod_no=f=q->first_to_check; | |
705 | /* | |
706 | * f points to already processed elements, so f+no_used is correct... | |
707 | * ... but: we don't check 128 buffers, as otherwise | |
708 | * qdio_has_outbound_q_moved would return 0 | |
709 | */ | |
710 | first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used), | |
711 | (QDIO_MAX_BUFFERS_PER_Q-1)); | |
712 | ||
713 | if ((!q->is_iqdio_q)&&(!q->hydra_gives_outbound_pcis)) | |
714 | SYNC_MEMORY; | |
715 | ||
716 | check_next: | |
717 | if (f==first_not_to_check) | |
718 | goto out; | |
719 | ||
720 | switch(slsb[f_mod_no]) { | |
721 | ||
722 | /* the adapter has not fetched the output yet */ | |
723 | case SLSB_CU_OUTPUT_PRIMED: | |
724 | QDIO_DBF_TEXT5(0,trace,"outpprim"); | |
725 | break; | |
726 | ||
727 | /* the adapter got it */ | |
728 | case SLSB_P_OUTPUT_EMPTY: | |
729 | atomic_dec(&q->number_of_buffers_used); | |
730 | f++; | |
731 | f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1); | |
732 | QDIO_DBF_TEXT5(0,trace,"outpempt"); | |
733 | goto check_next; | |
734 | ||
735 | case SLSB_P_OUTPUT_ERROR: | |
736 | QDIO_DBF_TEXT3(0,trace,"outperr"); | |
737 | sprintf(dbf_text,"%x-%x-%x",f_mod_no, | |
738 | q->sbal[f_mod_no]->element[14].sbalf.value, | |
739 | q->sbal[f_mod_no]->element[15].sbalf.value); | |
740 | QDIO_DBF_TEXT3(1,trace,dbf_text); | |
741 | QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256); | |
742 | ||
743 | /* kind of process the buffer */ | |
8129ee16 | 744 | set_slsb(q, &f_mod_no, SLSB_P_OUTPUT_NOT_INIT, &count); |
1da177e4 LT |
745 | |
746 | /* | |
747 | * we increment the frontier, as this buffer | |
748 | * was processed obviously | |
749 | */ | |
750 | atomic_dec(&q->number_of_buffers_used); | |
751 | f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1); | |
752 | ||
753 | if (q->qdio_error) | |
754 | q->error_status_flags|= | |
755 | QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR; | |
756 | q->qdio_error=SLSB_P_OUTPUT_ERROR; | |
757 | q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR; | |
758 | ||
759 | break; | |
760 | ||
761 | /* no new buffers */ | |
762 | default: | |
763 | QDIO_DBF_TEXT5(0,trace,"outpni"); | |
764 | } | |
765 | out: | |
766 | return (q->first_to_check=f_mod_no); | |
767 | } | |
768 | ||
769 | /* all buffers are processed */ | |
77933d72 | 770 | static inline int |
1da177e4 LT |
771 | qdio_is_outbound_q_done(struct qdio_q *q) |
772 | { | |
773 | int no_used; | |
774 | #ifdef CONFIG_QDIO_DEBUG | |
775 | char dbf_text[15]; | |
776 | #endif | |
777 | ||
778 | no_used=atomic_read(&q->number_of_buffers_used); | |
779 | ||
780 | #ifdef CONFIG_QDIO_DEBUG | |
781 | if (no_used) { | |
782 | sprintf(dbf_text,"oqisnt%02x",no_used); | |
783 | QDIO_DBF_TEXT4(0,trace,dbf_text); | |
784 | } else { | |
785 | QDIO_DBF_TEXT4(0,trace,"oqisdone"); | |
786 | } | |
787 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
788 | #endif /* CONFIG_QDIO_DEBUG */ | |
789 | return (no_used==0); | |
790 | } | |
791 | ||
77933d72 | 792 | static inline int |
1da177e4 LT |
793 | qdio_has_outbound_q_moved(struct qdio_q *q) |
794 | { | |
795 | int i; | |
796 | ||
797 | i=qdio_get_outbound_buffer_frontier(q); | |
798 | ||
799 | if ( (i!=GET_SAVED_FRONTIER(q)) || | |
800 | (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) { | |
801 | SAVE_FRONTIER(q,i); | |
802 | QDIO_DBF_TEXT4(0,trace,"oqhasmvd"); | |
803 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
804 | return 1; | |
805 | } else { | |
806 | QDIO_DBF_TEXT4(0,trace,"oqhsntmv"); | |
807 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
808 | return 0; | |
809 | } | |
810 | } | |
811 | ||
77933d72 | 812 | static inline void |
1da177e4 LT |
813 | qdio_kick_outbound_q(struct qdio_q *q) |
814 | { | |
815 | int result; | |
816 | #ifdef CONFIG_QDIO_DEBUG | |
817 | char dbf_text[15]; | |
818 | ||
819 | QDIO_DBF_TEXT4(0,trace,"kickoutq"); | |
820 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
821 | #endif /* CONFIG_QDIO_DEBUG */ | |
822 | ||
823 | if (!q->siga_out) | |
824 | return; | |
825 | ||
826 | /* here's the story with cc=2 and busy bit set (thanks, Rick): | |
827 | * VM's CP could present us cc=2 and busy bit set on SIGA-write | |
828 | * during reconfiguration of their Guest LAN (only in HIPERS mode, | |
829 | * QDIO mode is asynchronous -- cc=2 and busy bit there will take | |
830 | * the queues down immediately; and not being under VM we have a | |
831 | * problem on cc=2 and busy bit set right away). | |
832 | * | |
833 | * Therefore qdio_siga_output will try for a short time constantly, | |
834 | * if such a condition occurs. If it doesn't change, it will | |
835 | * increase the busy_siga_counter and save the timestamp, and | |
836 | * schedule the queue for later processing (via mark_q, using the | |
837 | * queue tasklet). __qdio_outbound_processing will check out the | |
838 | * counter. If non-zero, it will call qdio_kick_outbound_q as often | |
839 | * as the value of the counter. This will attempt further SIGA | |
840 | * instructions. For each successful SIGA, the counter is | |
841 | * decreased, for failing SIGAs the counter remains the same, after | |
842 | * all. | |
843 | * After some time of no movement, qdio_kick_outbound_q will | |
844 | * finally fail and reflect corresponding error codes to call | |
845 | * the upper layer module and have it take the queues down. | |
846 | * | |
847 | * Note that this is a change from the original HiperSockets design | |
848 | * (saying cc=2 and busy bit means take the queues down), but in | |
849 | * these days Guest LAN didn't exist... excessive cc=2 with busy bit | |
850 | * conditions will still take the queues down, but the threshold is | |
851 | * higher due to the Guest LAN environment. | |
852 | */ | |
853 | ||
854 | ||
855 | result=qdio_siga_output(q); | |
856 | ||
8129ee16 FP |
857 | switch (result) { |
858 | case 0: | |
859 | /* went smooth this time, reset timestamp */ | |
1da177e4 | 860 | #ifdef CONFIG_QDIO_DEBUG |
8129ee16 | 861 | QDIO_DBF_TEXT3(0,trace,"cc2reslv"); |
a8237fc4 | 862 | sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no, |
8129ee16 FP |
863 | atomic_read(&q->busy_siga_counter)); |
864 | QDIO_DBF_TEXT3(0,trace,dbf_text); | |
1da177e4 | 865 | #endif /* CONFIG_QDIO_DEBUG */ |
8129ee16 FP |
866 | q->timing.busy_start=0; |
867 | break; | |
868 | case (2|QDIO_SIGA_ERROR_B_BIT_SET): | |
869 | /* cc=2 and busy bit: */ | |
870 | atomic_inc(&q->busy_siga_counter); | |
871 | ||
872 | /* if the last siga was successful, save | |
873 | * timestamp here */ | |
874 | if (!q->timing.busy_start) | |
875 | q->timing.busy_start=NOW; | |
876 | ||
877 | /* if we're in time, don't touch error_status_flags | |
878 | * and siga_error */ | |
879 | if (NOW-q->timing.busy_start<QDIO_BUSY_BIT_GIVE_UP) { | |
880 | qdio_mark_q(q); | |
1da177e4 | 881 | break; |
8129ee16 FP |
882 | } |
883 | QDIO_DBF_TEXT2(0,trace,"cc2REPRT"); | |
1da177e4 | 884 | #ifdef CONFIG_QDIO_DEBUG |
a8237fc4 | 885 | sprintf(dbf_text,"%4x%2x%2x",q->schid.sch_no,q->q_no, |
8129ee16 FP |
886 | atomic_read(&q->busy_siga_counter)); |
887 | QDIO_DBF_TEXT3(0,trace,dbf_text); | |
1da177e4 | 888 | #endif /* CONFIG_QDIO_DEBUG */ |
8129ee16 FP |
889 | /* else fallthrough and report error */ |
890 | default: | |
891 | /* for plain cc=1, 2 or 3: */ | |
892 | if (q->siga_error) | |
1da177e4 | 893 | q->error_status_flags|= |
8129ee16 FP |
894 | QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR; |
895 | q->error_status_flags|= | |
896 | QDIO_STATUS_LOOK_FOR_ERROR; | |
897 | q->siga_error=result; | |
898 | } | |
1da177e4 LT |
899 | } |
900 | ||
77933d72 | 901 | static inline void |
1da177e4 LT |
902 | qdio_kick_outbound_handler(struct qdio_q *q) |
903 | { | |
904 | int start, end, real_end, count; | |
905 | #ifdef CONFIG_QDIO_DEBUG | |
906 | char dbf_text[15]; | |
907 | #endif | |
908 | ||
909 | start = q->first_element_to_kick; | |
910 | /* last_move_ftc was just updated */ | |
911 | real_end = GET_SAVED_FRONTIER(q); | |
912 | end = (real_end+QDIO_MAX_BUFFERS_PER_Q-1)& | |
913 | (QDIO_MAX_BUFFERS_PER_Q-1); | |
914 | count = (end+QDIO_MAX_BUFFERS_PER_Q+1-start)& | |
915 | (QDIO_MAX_BUFFERS_PER_Q-1); | |
916 | ||
917 | #ifdef CONFIG_QDIO_DEBUG | |
918 | QDIO_DBF_TEXT4(0,trace,"kickouth"); | |
919 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
920 | ||
921 | sprintf(dbf_text,"s=%2xc=%2x",start,count); | |
922 | QDIO_DBF_TEXT4(0,trace,dbf_text); | |
923 | #endif /* CONFIG_QDIO_DEBUG */ | |
924 | ||
925 | if (q->state==QDIO_IRQ_STATE_ACTIVE) | |
926 | q->handler(q->cdev,QDIO_STATUS_OUTBOUND_INT| | |
927 | q->error_status_flags, | |
928 | q->qdio_error,q->siga_error,q->q_no,start,count, | |
929 | q->int_parm); | |
930 | ||
931 | /* for the next time: */ | |
932 | q->first_element_to_kick=real_end; | |
933 | q->qdio_error=0; | |
934 | q->siga_error=0; | |
935 | q->error_status_flags=0; | |
936 | } | |
937 | ||
938 | static inline void | |
939 | __qdio_outbound_processing(struct qdio_q *q) | |
940 | { | |
941 | int siga_attempts; | |
942 | ||
943 | QDIO_DBF_TEXT4(0,trace,"qoutproc"); | |
944 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
945 | ||
946 | if (unlikely(qdio_reserve_q(q))) { | |
947 | qdio_release_q(q); | |
948 | #ifdef QDIO_PERFORMANCE_STATS | |
949 | o_p_c++; | |
950 | #endif /* QDIO_PERFORMANCE_STATS */ | |
951 | /* as we're sissies, we'll check next time */ | |
952 | if (likely(!atomic_read(&q->is_in_shutdown))) { | |
953 | qdio_mark_q(q); | |
954 | QDIO_DBF_TEXT4(0,trace,"busy,agn"); | |
955 | } | |
956 | return; | |
957 | } | |
958 | #ifdef QDIO_PERFORMANCE_STATS | |
959 | o_p_nc++; | |
960 | perf_stats.tl_runs++; | |
961 | #endif /* QDIO_PERFORMANCE_STATS */ | |
962 | ||
963 | /* see comment in qdio_kick_outbound_q */ | |
964 | siga_attempts=atomic_read(&q->busy_siga_counter); | |
965 | while (siga_attempts) { | |
966 | atomic_dec(&q->busy_siga_counter); | |
967 | qdio_kick_outbound_q(q); | |
968 | siga_attempts--; | |
969 | } | |
970 | ||
971 | if (qdio_has_outbound_q_moved(q)) | |
972 | qdio_kick_outbound_handler(q); | |
973 | ||
974 | if (q->is_iqdio_q) { | |
975 | /* | |
976 | * for asynchronous queues, we better check, if the fill | |
977 | * level is too high. for synchronous queues, the fill | |
978 | * level will never be that high. | |
979 | */ | |
980 | if (atomic_read(&q->number_of_buffers_used)> | |
981 | IQDIO_FILL_LEVEL_TO_POLL) | |
982 | qdio_mark_q(q); | |
983 | ||
984 | } else if (!q->hydra_gives_outbound_pcis) | |
985 | if (!qdio_is_outbound_q_done(q)) | |
986 | qdio_mark_q(q); | |
987 | ||
988 | qdio_release_q(q); | |
989 | } | |
990 | ||
991 | static void | |
992 | qdio_outbound_processing(struct qdio_q *q) | |
993 | { | |
994 | __qdio_outbound_processing(q); | |
995 | } | |
996 | ||
997 | /************************* INBOUND ROUTINES *******************************/ | |
998 | ||
999 | ||
77933d72 | 1000 | static inline int |
1da177e4 LT |
1001 | qdio_get_inbound_buffer_frontier(struct qdio_q *q) |
1002 | { | |
8129ee16 | 1003 | struct qdio_irq *irq; |
1da177e4 LT |
1004 | int f,f_mod_no; |
1005 | volatile char *slsb; | |
8129ee16 | 1006 | unsigned int count = 1; |
1da177e4 LT |
1007 | int first_not_to_check; |
1008 | #ifdef CONFIG_QDIO_DEBUG | |
1009 | char dbf_text[15]; | |
1010 | #endif /* CONFIG_QDIO_DEBUG */ | |
1011 | #ifdef QDIO_USE_PROCESSING_STATE | |
1012 | int last_position=-1; | |
1013 | #endif /* QDIO_USE_PROCESSING_STATE */ | |
1014 | ||
1015 | QDIO_DBF_TEXT4(0,trace,"getibfro"); | |
1016 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
1017 | ||
8129ee16 FP |
1018 | irq = (struct qdio_irq *) q->irq_ptr; |
1019 | if (irq->is_qebsm) | |
1020 | return qdio_qebsm_get_inbound_buffer_frontier(q); | |
1021 | ||
1da177e4 LT |
1022 | slsb=&q->slsb.acc.val[0]; |
1023 | f_mod_no=f=q->first_to_check; | |
1024 | /* | |
1025 | * we don't check 128 buffers, as otherwise qdio_has_inbound_q_moved | |
1026 | * would return 0 | |
1027 | */ | |
1028 | first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used), | |
1029 | (QDIO_MAX_BUFFERS_PER_Q-1)); | |
1030 | ||
1031 | /* | |
1032 | * we don't use this one, as a PCI or we after a thin interrupt | |
1033 | * will sync the queues | |
1034 | */ | |
1035 | /* SYNC_MEMORY;*/ | |
1036 | ||
1037 | check_next: | |
1038 | f_mod_no=f&(QDIO_MAX_BUFFERS_PER_Q-1); | |
1039 | if (f==first_not_to_check) | |
1040 | goto out; | |
1041 | switch (slsb[f_mod_no]) { | |
1042 | ||
1043 | /* CU_EMPTY means frontier is reached */ | |
1044 | case SLSB_CU_INPUT_EMPTY: | |
1045 | QDIO_DBF_TEXT5(0,trace,"inptempt"); | |
1046 | break; | |
1047 | ||
1048 | /* P_PRIMED means set slsb to P_PROCESSING and move on */ | |
1049 | case SLSB_P_INPUT_PRIMED: | |
1050 | QDIO_DBF_TEXT5(0,trace,"inptprim"); | |
1051 | ||
1052 | #ifdef QDIO_USE_PROCESSING_STATE | |
1053 | /* | |
1054 | * as soon as running under VM, polling the input queues will | |
1055 | * kill VM in terms of CP overhead | |
1056 | */ | |
1057 | if (q->siga_sync) { | |
8129ee16 | 1058 | set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count); |
1da177e4 LT |
1059 | } else { |
1060 | /* set the previous buffer to NOT_INIT. The current | |
1061 | * buffer will be set to PROCESSING at the end of | |
1062 | * this function to avoid further interrupts. */ | |
1063 | if (last_position>=0) | |
8129ee16 FP |
1064 | set_slsb(q, &last_position, |
1065 | SLSB_P_INPUT_NOT_INIT, &count); | |
1da177e4 LT |
1066 | atomic_set(&q->polling,1); |
1067 | last_position=f_mod_no; | |
1068 | } | |
1069 | #else /* QDIO_USE_PROCESSING_STATE */ | |
8129ee16 | 1070 | set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count); |
1da177e4 LT |
1071 | #endif /* QDIO_USE_PROCESSING_STATE */ |
1072 | /* | |
1073 | * not needed, as the inbound queue will be synced on the next | |
1074 | * siga-r, resp. tiqdio_is_inbound_q_done will do the siga-s | |
1075 | */ | |
1076 | /*SYNC_MEMORY;*/ | |
1077 | f++; | |
1078 | atomic_dec(&q->number_of_buffers_used); | |
1079 | goto check_next; | |
1080 | ||
1081 | case SLSB_P_INPUT_NOT_INIT: | |
1082 | case SLSB_P_INPUT_PROCESSING: | |
1083 | QDIO_DBF_TEXT5(0,trace,"inpnipro"); | |
1084 | break; | |
1085 | ||
1086 | /* P_ERROR means frontier is reached, break and report error */ | |
1087 | case SLSB_P_INPUT_ERROR: | |
1088 | #ifdef CONFIG_QDIO_DEBUG | |
1089 | sprintf(dbf_text,"inperr%2x",f_mod_no); | |
1090 | QDIO_DBF_TEXT3(1,trace,dbf_text); | |
1091 | #endif /* CONFIG_QDIO_DEBUG */ | |
1092 | QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256); | |
1093 | ||
1094 | /* kind of process the buffer */ | |
8129ee16 | 1095 | set_slsb(q, &f_mod_no, SLSB_P_INPUT_NOT_INIT, &count); |
1da177e4 LT |
1096 | |
1097 | if (q->qdio_error) | |
1098 | q->error_status_flags|= | |
1099 | QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR; | |
1100 | q->qdio_error=SLSB_P_INPUT_ERROR; | |
1101 | q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR; | |
1102 | ||
1103 | /* we increment the frontier, as this buffer | |
1104 | * was processed obviously */ | |
1105 | f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1); | |
1106 | atomic_dec(&q->number_of_buffers_used); | |
1107 | ||
1108 | #ifdef QDIO_USE_PROCESSING_STATE | |
1109 | last_position=-1; | |
1110 | #endif /* QDIO_USE_PROCESSING_STATE */ | |
1111 | ||
1112 | break; | |
1113 | ||
1114 | /* everything else means frontier not changed (HALTED or so) */ | |
1115 | default: | |
1116 | break; | |
1117 | } | |
1118 | out: | |
1119 | q->first_to_check=f_mod_no; | |
1120 | ||
1121 | #ifdef QDIO_USE_PROCESSING_STATE | |
1122 | if (last_position>=0) | |
8129ee16 | 1123 | set_slsb(q, &last_position, SLSB_P_INPUT_NOT_INIT, &count); |
1da177e4 LT |
1124 | #endif /* QDIO_USE_PROCESSING_STATE */ |
1125 | ||
1126 | QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int)); | |
1127 | ||
1128 | return q->first_to_check; | |
1129 | } | |
1130 | ||
77933d72 | 1131 | static inline int |
1da177e4 LT |
1132 | qdio_has_inbound_q_moved(struct qdio_q *q) |
1133 | { | |
1134 | int i; | |
1135 | ||
1136 | #ifdef QDIO_PERFORMANCE_STATS | |
1137 | static int old_pcis=0; | |
1138 | static int old_thinints=0; | |
1139 | ||
1140 | if ((old_pcis==perf_stats.pcis)&&(old_thinints==perf_stats.thinints)) | |
1141 | perf_stats.start_time_inbound=NOW; | |
1142 | else | |
1143 | old_pcis=perf_stats.pcis; | |
1144 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1145 | ||
1146 | i=qdio_get_inbound_buffer_frontier(q); | |
1147 | if ( (i!=GET_SAVED_FRONTIER(q)) || | |
1148 | (q->error_status_flags&QDIO_STATUS_LOOK_FOR_ERROR) ) { | |
1149 | SAVE_FRONTIER(q,i); | |
1150 | if ((!q->siga_sync)&&(!q->hydra_gives_outbound_pcis)) | |
1151 | SAVE_TIMESTAMP(q); | |
1152 | ||
1153 | QDIO_DBF_TEXT4(0,trace,"inhasmvd"); | |
1154 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
1155 | return 1; | |
1156 | } else { | |
1157 | QDIO_DBF_TEXT4(0,trace,"inhsntmv"); | |
1158 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
1159 | return 0; | |
1160 | } | |
1161 | } | |
1162 | ||
1163 | /* means, no more buffers to be filled */ | |
77933d72 | 1164 | static inline int |
1da177e4 LT |
1165 | tiqdio_is_inbound_q_done(struct qdio_q *q) |
1166 | { | |
1167 | int no_used; | |
8129ee16 FP |
1168 | unsigned int start_buf, count; |
1169 | unsigned char state = 0; | |
1170 | struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr; | |
1171 | ||
1da177e4 LT |
1172 | #ifdef CONFIG_QDIO_DEBUG |
1173 | char dbf_text[15]; | |
1174 | #endif | |
1175 | ||
1176 | no_used=atomic_read(&q->number_of_buffers_used); | |
1177 | ||
1178 | /* propagate the change from 82 to 80 through VM */ | |
1179 | SYNC_MEMORY; | |
1180 | ||
1181 | #ifdef CONFIG_QDIO_DEBUG | |
1182 | if (no_used) { | |
1183 | sprintf(dbf_text,"iqisnt%02x",no_used); | |
1184 | QDIO_DBF_TEXT4(0,trace,dbf_text); | |
1185 | } else { | |
1186 | QDIO_DBF_TEXT4(0,trace,"iniqisdo"); | |
1187 | } | |
1188 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
1189 | #endif /* CONFIG_QDIO_DEBUG */ | |
1190 | ||
1191 | if (!no_used) | |
1192 | return 1; | |
1193 | ||
1194 | if (!q->siga_sync) | |
1195 | /* we'll check for more primed buffers in qeth_stop_polling */ | |
1196 | return 0; | |
8129ee16 FP |
1197 | if (irq->is_qebsm) { |
1198 | count = 1; | |
1199 | start_buf = q->first_to_check; | |
1200 | qdio_do_eqbs(q, &state, &start_buf, &count); | |
1201 | } else | |
1202 | state = q->slsb.acc.val[q->first_to_check]; | |
1203 | if (state != SLSB_P_INPUT_PRIMED) | |
1da177e4 LT |
1204 | /* |
1205 | * nothing more to do, if next buffer is not PRIMED. | |
1206 | * note that we did a SYNC_MEMORY before, that there | |
1207 | * has been a sychnronization. | |
1208 | * we will return 0 below, as there is nothing to do | |
1209 | * (stop_polling not necessary, as we have not been | |
1210 | * using the PROCESSING state | |
1211 | */ | |
1212 | return 0; | |
1213 | ||
1214 | /* | |
1215 | * ok, the next input buffer is primed. that means, that device state | |
1216 | * change indicator and adapter local summary are set, so we will find | |
1217 | * it next time. | |
1218 | * we will return 0 below, as there is nothing to do, except scheduling | |
1219 | * ourselves for the next time. | |
1220 | */ | |
1221 | tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind); | |
1222 | tiqdio_sched_tl(); | |
1223 | return 0; | |
1224 | } | |
1225 | ||
77933d72 | 1226 | static inline int |
1da177e4 LT |
1227 | qdio_is_inbound_q_done(struct qdio_q *q) |
1228 | { | |
1229 | int no_used; | |
8129ee16 FP |
1230 | unsigned int start_buf, count; |
1231 | unsigned char state = 0; | |
1232 | struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr; | |
1233 | ||
1da177e4 LT |
1234 | #ifdef CONFIG_QDIO_DEBUG |
1235 | char dbf_text[15]; | |
1236 | #endif | |
1237 | ||
1238 | no_used=atomic_read(&q->number_of_buffers_used); | |
1239 | ||
1240 | /* | |
1241 | * we need that one for synchronization with the adapter, as it | |
1242 | * does a kind of PCI avoidance | |
1243 | */ | |
1244 | SYNC_MEMORY; | |
1245 | ||
1246 | if (!no_used) { | |
1247 | QDIO_DBF_TEXT4(0,trace,"inqisdnA"); | |
1248 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
1249 | QDIO_DBF_TEXT4(0,trace,dbf_text); | |
1250 | return 1; | |
1251 | } | |
8129ee16 FP |
1252 | if (irq->is_qebsm) { |
1253 | count = 1; | |
1254 | start_buf = q->first_to_check; | |
1255 | qdio_do_eqbs(q, &state, &start_buf, &count); | |
1256 | } else | |
1257 | state = q->slsb.acc.val[q->first_to_check]; | |
1258 | if (state == SLSB_P_INPUT_PRIMED) { | |
1da177e4 LT |
1259 | /* we got something to do */ |
1260 | QDIO_DBF_TEXT4(0,trace,"inqisntA"); | |
1261 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
1262 | return 0; | |
1263 | } | |
1264 | ||
1265 | /* on VM, we don't poll, so the q is always done here */ | |
1266 | if (q->siga_sync) | |
1267 | return 1; | |
1268 | if (q->hydra_gives_outbound_pcis) | |
1269 | return 1; | |
1270 | ||
1271 | /* | |
1272 | * at this point we know, that inbound first_to_check | |
1273 | * has (probably) not moved (see qdio_inbound_processing) | |
1274 | */ | |
1275 | if (NOW>GET_SAVED_TIMESTAMP(q)+q->timing.threshold) { | |
1276 | #ifdef CONFIG_QDIO_DEBUG | |
1277 | QDIO_DBF_TEXT4(0,trace,"inqisdon"); | |
1278 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
1279 | sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used); | |
1280 | QDIO_DBF_TEXT4(0,trace,dbf_text); | |
1281 | #endif /* CONFIG_QDIO_DEBUG */ | |
1282 | return 1; | |
1283 | } else { | |
1284 | #ifdef CONFIG_QDIO_DEBUG | |
1285 | QDIO_DBF_TEXT4(0,trace,"inqisntd"); | |
1286 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
1287 | sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used); | |
1288 | QDIO_DBF_TEXT4(0,trace,dbf_text); | |
1289 | #endif /* CONFIG_QDIO_DEBUG */ | |
1290 | return 0; | |
1291 | } | |
1292 | } | |
1293 | ||
77933d72 | 1294 | static inline void |
1da177e4 LT |
1295 | qdio_kick_inbound_handler(struct qdio_q *q) |
1296 | { | |
1297 | int count, start, end, real_end, i; | |
1298 | #ifdef CONFIG_QDIO_DEBUG | |
1299 | char dbf_text[15]; | |
1300 | #endif | |
1301 | ||
1302 | QDIO_DBF_TEXT4(0,trace,"kickinh"); | |
1303 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
1304 | ||
1305 | start=q->first_element_to_kick; | |
1306 | real_end=q->first_to_check; | |
1307 | end=(real_end+QDIO_MAX_BUFFERS_PER_Q-1)&(QDIO_MAX_BUFFERS_PER_Q-1); | |
1308 | ||
1309 | i=start; | |
1310 | count=0; | |
1311 | while (1) { | |
1312 | count++; | |
1313 | if (i==end) | |
1314 | break; | |
1315 | i=(i+1)&(QDIO_MAX_BUFFERS_PER_Q-1); | |
1316 | } | |
1317 | ||
1318 | #ifdef CONFIG_QDIO_DEBUG | |
1319 | sprintf(dbf_text,"s=%2xc=%2x",start,count); | |
1320 | QDIO_DBF_TEXT4(0,trace,dbf_text); | |
1321 | #endif /* CONFIG_QDIO_DEBUG */ | |
1322 | ||
1323 | if (likely(q->state==QDIO_IRQ_STATE_ACTIVE)) | |
1324 | q->handler(q->cdev, | |
1325 | QDIO_STATUS_INBOUND_INT|q->error_status_flags, | |
1326 | q->qdio_error,q->siga_error,q->q_no,start,count, | |
1327 | q->int_parm); | |
1328 | ||
1329 | /* for the next time: */ | |
1330 | q->first_element_to_kick=real_end; | |
1331 | q->qdio_error=0; | |
1332 | q->siga_error=0; | |
1333 | q->error_status_flags=0; | |
1334 | ||
1335 | #ifdef QDIO_PERFORMANCE_STATS | |
1336 | perf_stats.inbound_time+=NOW-perf_stats.start_time_inbound; | |
1337 | perf_stats.inbound_cnt++; | |
1338 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1339 | } | |
1340 | ||
1341 | static inline void | |
1342 | __tiqdio_inbound_processing(struct qdio_q *q, int spare_ind_was_set) | |
1343 | { | |
1344 | struct qdio_irq *irq_ptr; | |
1345 | struct qdio_q *oq; | |
1346 | int i; | |
1347 | ||
1348 | QDIO_DBF_TEXT4(0,trace,"iqinproc"); | |
1349 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
1350 | ||
1351 | /* | |
1352 | * we first want to reserve the q, so that we know, that we don't | |
1353 | * interrupt ourselves and call qdio_unmark_q, as is_in_shutdown might | |
1354 | * be set | |
1355 | */ | |
1356 | if (unlikely(qdio_reserve_q(q))) { | |
1357 | qdio_release_q(q); | |
1358 | #ifdef QDIO_PERFORMANCE_STATS | |
1359 | ii_p_c++; | |
1360 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1361 | /* | |
1362 | * as we might just be about to stop polling, we make | |
1363 | * sure that we check again at least once more | |
1364 | */ | |
1365 | tiqdio_sched_tl(); | |
1366 | return; | |
1367 | } | |
1368 | #ifdef QDIO_PERFORMANCE_STATS | |
1369 | ii_p_nc++; | |
1370 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1371 | if (unlikely(atomic_read(&q->is_in_shutdown))) { | |
1372 | qdio_unmark_q(q); | |
1373 | goto out; | |
1374 | } | |
1375 | ||
1376 | /* | |
1377 | * we reset spare_ind_was_set, when the queue does not use the | |
1378 | * spare indicator | |
1379 | */ | |
1380 | if (spare_ind_was_set) | |
1381 | spare_ind_was_set = (q->dev_st_chg_ind == &spare_indicator); | |
1382 | ||
1383 | if (!(*(q->dev_st_chg_ind)) && !spare_ind_was_set) | |
1384 | goto out; | |
1385 | /* | |
1386 | * q->dev_st_chg_ind is the indicator, be it shared or not. | |
1387 | * only clear it, if indicator is non-shared | |
1388 | */ | |
1389 | if (!spare_ind_was_set) | |
1390 | tiqdio_clear_summary_bit((__u32*)q->dev_st_chg_ind); | |
1391 | ||
1392 | if (q->hydra_gives_outbound_pcis) { | |
1393 | if (!q->siga_sync_done_on_thinints) { | |
1394 | SYNC_MEMORY_ALL; | |
1395 | } else if ((!q->siga_sync_done_on_outb_tis)&& | |
1396 | (q->hydra_gives_outbound_pcis)) { | |
1397 | SYNC_MEMORY_ALL_OUTB; | |
1398 | } | |
1399 | } else { | |
1400 | SYNC_MEMORY; | |
1401 | } | |
1402 | /* | |
1403 | * maybe we have to do work on our outbound queues... at least | |
1404 | * we have to check the outbound-int-capable thinint-capable | |
1405 | * queues | |
1406 | */ | |
1407 | if (q->hydra_gives_outbound_pcis) { | |
1408 | irq_ptr = (struct qdio_irq*)q->irq_ptr; | |
1409 | for (i=0;i<irq_ptr->no_output_qs;i++) { | |
1410 | oq = irq_ptr->output_qs[i]; | |
1411 | #ifdef QDIO_PERFORMANCE_STATS | |
1412 | perf_stats.tl_runs--; | |
1413 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1414 | if (!qdio_is_outbound_q_done(oq)) | |
1415 | __qdio_outbound_processing(oq); | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | if (!qdio_has_inbound_q_moved(q)) | |
1420 | goto out; | |
1421 | ||
1422 | qdio_kick_inbound_handler(q); | |
1423 | if (tiqdio_is_inbound_q_done(q)) | |
1424 | if (!qdio_stop_polling(q)) { | |
1425 | /* | |
1426 | * we set the flags to get into the stuff next time, | |
1427 | * see also comment in qdio_stop_polling | |
1428 | */ | |
1429 | tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind); | |
1430 | tiqdio_sched_tl(); | |
1431 | } | |
1432 | out: | |
1433 | qdio_release_q(q); | |
1434 | } | |
1435 | ||
1436 | static void | |
1437 | tiqdio_inbound_processing(struct qdio_q *q) | |
1438 | { | |
1439 | __tiqdio_inbound_processing(q, atomic_read(&spare_indicator_usecount)); | |
1440 | } | |
1441 | ||
1442 | static inline void | |
1443 | __qdio_inbound_processing(struct qdio_q *q) | |
1444 | { | |
1445 | int q_laps=0; | |
1446 | ||
1447 | QDIO_DBF_TEXT4(0,trace,"qinproc"); | |
1448 | QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); | |
1449 | ||
1450 | if (unlikely(qdio_reserve_q(q))) { | |
1451 | qdio_release_q(q); | |
1452 | #ifdef QDIO_PERFORMANCE_STATS | |
1453 | i_p_c++; | |
1454 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1455 | /* as we're sissies, we'll check next time */ | |
1456 | if (likely(!atomic_read(&q->is_in_shutdown))) { | |
1457 | qdio_mark_q(q); | |
1458 | QDIO_DBF_TEXT4(0,trace,"busy,agn"); | |
1459 | } | |
1460 | return; | |
1461 | } | |
1462 | #ifdef QDIO_PERFORMANCE_STATS | |
1463 | i_p_nc++; | |
1464 | perf_stats.tl_runs++; | |
1465 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1466 | ||
1467 | again: | |
1468 | if (qdio_has_inbound_q_moved(q)) { | |
1469 | qdio_kick_inbound_handler(q); | |
1470 | if (!qdio_stop_polling(q)) { | |
1471 | q_laps++; | |
1472 | if (q_laps<QDIO_Q_LAPS) | |
1473 | goto again; | |
1474 | } | |
1475 | qdio_mark_q(q); | |
1476 | } else { | |
1477 | if (!qdio_is_inbound_q_done(q)) | |
1478 | /* means poll time is not yet over */ | |
1479 | qdio_mark_q(q); | |
1480 | } | |
1481 | ||
1482 | qdio_release_q(q); | |
1483 | } | |
1484 | ||
1485 | static void | |
1486 | qdio_inbound_processing(struct qdio_q *q) | |
1487 | { | |
1488 | __qdio_inbound_processing(q); | |
1489 | } | |
1490 | ||
1491 | /************************* MAIN ROUTINES *******************************/ | |
1492 | ||
1493 | #ifdef QDIO_USE_PROCESSING_STATE | |
1494 | static inline int | |
1495 | tiqdio_reset_processing_state(struct qdio_q *q, int q_laps) | |
1496 | { | |
1497 | if (!q) { | |
1498 | tiqdio_sched_tl(); | |
1499 | return 0; | |
1500 | } | |
1501 | ||
1502 | /* | |
1503 | * under VM, we have not used the PROCESSING state, so no | |
1504 | * need to stop polling | |
1505 | */ | |
1506 | if (q->siga_sync) | |
1507 | return 2; | |
1508 | ||
1509 | if (unlikely(qdio_reserve_q(q))) { | |
1510 | qdio_release_q(q); | |
1511 | #ifdef QDIO_PERFORMANCE_STATS | |
1512 | ii_p_c++; | |
1513 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1514 | /* | |
1515 | * as we might just be about to stop polling, we make | |
1516 | * sure that we check again at least once more | |
1517 | */ | |
1518 | ||
1519 | /* | |
1520 | * sanity -- we'd get here without setting the | |
1521 | * dev st chg ind | |
1522 | */ | |
1523 | tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind); | |
1524 | tiqdio_sched_tl(); | |
1525 | return 0; | |
1526 | } | |
1527 | if (qdio_stop_polling(q)) { | |
1528 | qdio_release_q(q); | |
1529 | return 2; | |
1530 | } | |
1531 | if (q_laps<QDIO_Q_LAPS-1) { | |
1532 | qdio_release_q(q); | |
1533 | return 3; | |
1534 | } | |
1535 | /* | |
1536 | * we set the flags to get into the stuff | |
1537 | * next time, see also comment in qdio_stop_polling | |
1538 | */ | |
1539 | tiqdio_set_summary_bit((__u32*)q->dev_st_chg_ind); | |
1540 | tiqdio_sched_tl(); | |
1541 | qdio_release_q(q); | |
1542 | return 1; | |
1543 | ||
1544 | } | |
1545 | #endif /* QDIO_USE_PROCESSING_STATE */ | |
1546 | ||
1547 | static inline void | |
1548 | tiqdio_inbound_checks(void) | |
1549 | { | |
1550 | struct qdio_q *q; | |
1551 | int spare_ind_was_set=0; | |
1552 | #ifdef QDIO_USE_PROCESSING_STATE | |
1553 | int q_laps=0; | |
1554 | #endif /* QDIO_USE_PROCESSING_STATE */ | |
1555 | ||
1556 | QDIO_DBF_TEXT4(0,trace,"iqdinbck"); | |
1557 | QDIO_DBF_TEXT5(0,trace,"iqlocsum"); | |
1558 | ||
1559 | #ifdef QDIO_USE_PROCESSING_STATE | |
1560 | again: | |
1561 | #endif /* QDIO_USE_PROCESSING_STATE */ | |
1562 | ||
1563 | /* when the spare indicator is used and set, save that and clear it */ | |
1564 | if ((atomic_read(&spare_indicator_usecount)) && spare_indicator) { | |
1565 | spare_ind_was_set = 1; | |
1566 | tiqdio_clear_summary_bit((__u32*)&spare_indicator); | |
1567 | } | |
1568 | ||
1569 | q=(struct qdio_q*)tiq_list; | |
1570 | do { | |
1571 | if (!q) | |
1572 | break; | |
1573 | __tiqdio_inbound_processing(q, spare_ind_was_set); | |
1574 | q=(struct qdio_q*)q->list_next; | |
1575 | } while (q!=(struct qdio_q*)tiq_list); | |
1576 | ||
1577 | #ifdef QDIO_USE_PROCESSING_STATE | |
1578 | q=(struct qdio_q*)tiq_list; | |
1579 | do { | |
1580 | int ret; | |
1581 | ||
1582 | ret = tiqdio_reset_processing_state(q, q_laps); | |
1583 | switch (ret) { | |
1584 | case 0: | |
1585 | return; | |
1586 | case 1: | |
1587 | q_laps++; | |
1588 | case 2: | |
1589 | q = (struct qdio_q*)q->list_next; | |
1590 | break; | |
1591 | default: | |
1592 | q_laps++; | |
1593 | goto again; | |
1594 | } | |
1595 | } while (q!=(struct qdio_q*)tiq_list); | |
1596 | #endif /* QDIO_USE_PROCESSING_STATE */ | |
1597 | } | |
1598 | ||
1599 | static void | |
1600 | tiqdio_tl(unsigned long data) | |
1601 | { | |
1602 | QDIO_DBF_TEXT4(0,trace,"iqdio_tl"); | |
1603 | ||
1604 | #ifdef QDIO_PERFORMANCE_STATS | |
1605 | perf_stats.tl_runs++; | |
1606 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1607 | ||
1608 | tiqdio_inbound_checks(); | |
1609 | } | |
1610 | ||
1611 | /********************* GENERAL HELPER_ROUTINES ***********************/ | |
1612 | ||
1613 | static void | |
1614 | qdio_release_irq_memory(struct qdio_irq *irq_ptr) | |
1615 | { | |
1616 | int i; | |
1617 | ||
1618 | for (i=0;i<QDIO_MAX_QUEUES_PER_IRQ;i++) { | |
1619 | if (!irq_ptr->input_qs[i]) | |
1620 | goto next; | |
1621 | ||
17fd682e | 1622 | kfree(irq_ptr->input_qs[i]->slib); |
1da177e4 LT |
1623 | kfree(irq_ptr->input_qs[i]); |
1624 | ||
1625 | next: | |
1626 | if (!irq_ptr->output_qs[i]) | |
1627 | continue; | |
1628 | ||
17fd682e | 1629 | kfree(irq_ptr->output_qs[i]->slib); |
1da177e4 LT |
1630 | kfree(irq_ptr->output_qs[i]); |
1631 | ||
1632 | } | |
1633 | kfree(irq_ptr->qdr); | |
1634 | kfree(irq_ptr); | |
1635 | } | |
1636 | ||
1637 | static void | |
1638 | qdio_set_impl_params(struct qdio_irq *irq_ptr, | |
1639 | unsigned int qib_param_field_format, | |
1640 | /* pointer to 128 bytes or NULL, if no param field */ | |
1641 | unsigned char *qib_param_field, | |
1642 | /* pointer to no_queues*128 words of data or NULL */ | |
1643 | unsigned int no_input_qs, | |
1644 | unsigned int no_output_qs, | |
1645 | unsigned long *input_slib_elements, | |
1646 | unsigned long *output_slib_elements) | |
1647 | { | |
1648 | int i,j; | |
1649 | ||
1650 | if (!irq_ptr) | |
1651 | return; | |
1652 | ||
1653 | irq_ptr->qib.pfmt=qib_param_field_format; | |
1654 | if (qib_param_field) | |
1655 | memcpy(irq_ptr->qib.parm,qib_param_field, | |
1656 | QDIO_MAX_BUFFERS_PER_Q); | |
1657 | ||
1658 | if (input_slib_elements) | |
1659 | for (i=0;i<no_input_qs;i++) { | |
1660 | for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) | |
1661 | irq_ptr->input_qs[i]->slib->slibe[j].parms= | |
1662 | input_slib_elements[ | |
1663 | i*QDIO_MAX_BUFFERS_PER_Q+j]; | |
1664 | } | |
1665 | if (output_slib_elements) | |
1666 | for (i=0;i<no_output_qs;i++) { | |
1667 | for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) | |
1668 | irq_ptr->output_qs[i]->slib->slibe[j].parms= | |
1669 | output_slib_elements[ | |
1670 | i*QDIO_MAX_BUFFERS_PER_Q+j]; | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | static int | |
1675 | qdio_alloc_qs(struct qdio_irq *irq_ptr, | |
1676 | int no_input_qs, int no_output_qs) | |
1677 | { | |
1678 | int i; | |
1679 | struct qdio_q *q; | |
1680 | int result=-ENOMEM; | |
1681 | ||
1682 | for (i=0;i<no_input_qs;i++) { | |
1683 | q=kmalloc(sizeof(struct qdio_q),GFP_KERNEL); | |
1684 | ||
1685 | if (!q) { | |
1686 | QDIO_PRINT_ERR("kmalloc of q failed!\n"); | |
1687 | goto out; | |
1688 | } | |
1689 | ||
1690 | memset(q,0,sizeof(struct qdio_q)); | |
1691 | ||
1692 | q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL); | |
1693 | if (!q->slib) { | |
1694 | QDIO_PRINT_ERR("kmalloc of slib failed!\n"); | |
1695 | goto out; | |
1696 | } | |
1697 | ||
1698 | irq_ptr->input_qs[i]=q; | |
1699 | } | |
1700 | ||
1701 | for (i=0;i<no_output_qs;i++) { | |
1702 | q=kmalloc(sizeof(struct qdio_q),GFP_KERNEL); | |
1703 | ||
1704 | if (!q) { | |
1705 | goto out; | |
1706 | } | |
1707 | ||
1708 | memset(q,0,sizeof(struct qdio_q)); | |
1709 | ||
1710 | q->slib=kmalloc(PAGE_SIZE,GFP_KERNEL); | |
1711 | if (!q->slib) { | |
1712 | QDIO_PRINT_ERR("kmalloc of slib failed!\n"); | |
1713 | goto out; | |
1714 | } | |
1715 | ||
1716 | irq_ptr->output_qs[i]=q; | |
1717 | } | |
1718 | ||
1719 | result=0; | |
1720 | out: | |
1721 | return result; | |
1722 | } | |
1723 | ||
1724 | static void | |
1725 | qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev, | |
1726 | int no_input_qs, int no_output_qs, | |
1727 | qdio_handler_t *input_handler, | |
1728 | qdio_handler_t *output_handler, | |
1729 | unsigned long int_parm,int q_format, | |
1730 | unsigned long flags, | |
1731 | void **inbound_sbals_array, | |
1732 | void **outbound_sbals_array) | |
1733 | { | |
1734 | struct qdio_q *q; | |
1735 | int i,j; | |
1736 | char dbf_text[20]; /* see qdio_initialize */ | |
1737 | void *ptr; | |
1738 | int available; | |
1739 | ||
a8237fc4 | 1740 | sprintf(dbf_text,"qfqs%4x",cdev->private->sch_no); |
1da177e4 LT |
1741 | QDIO_DBF_TEXT0(0,setup,dbf_text); |
1742 | for (i=0;i<no_input_qs;i++) { | |
1743 | q=irq_ptr->input_qs[i]; | |
1744 | ||
1745 | memset(q,0,((char*)&q->slib)-((char*)q)); | |
1746 | sprintf(dbf_text,"in-q%4x",i); | |
1747 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
1748 | QDIO_DBF_HEX0(0,setup,&q,sizeof(void*)); | |
1749 | ||
1750 | memset(q->slib,0,PAGE_SIZE); | |
1751 | q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2); | |
1752 | ||
1753 | available=0; | |
1754 | ||
1755 | for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) | |
1756 | q->sbal[j]=*(inbound_sbals_array++); | |
1757 | ||
1758 | q->queue_type=q_format; | |
1759 | q->int_parm=int_parm; | |
a8237fc4 | 1760 | q->schid = irq_ptr->schid; |
1da177e4 LT |
1761 | q->irq_ptr = irq_ptr; |
1762 | q->cdev = cdev; | |
1763 | q->mask=1<<(31-i); | |
1764 | q->q_no=i; | |
1765 | q->is_input_q=1; | |
1766 | q->first_to_check=0; | |
1767 | q->last_move_ftc=0; | |
1768 | q->handler=input_handler; | |
1769 | q->dev_st_chg_ind=irq_ptr->dev_st_chg_ind; | |
1770 | ||
1771 | q->tasklet.data=(unsigned long)q; | |
1772 | /* q->is_thinint_q isn't valid at this time, but | |
1773 | * irq_ptr->is_thinint_irq is */ | |
1774 | q->tasklet.func=(void(*)(unsigned long)) | |
1775 | ((irq_ptr->is_thinint_irq)?&tiqdio_inbound_processing: | |
1776 | &qdio_inbound_processing); | |
1777 | ||
1778 | /* actually this is not used for inbound queues. yet. */ | |
1779 | atomic_set(&q->busy_siga_counter,0); | |
1780 | q->timing.busy_start=0; | |
1781 | ||
1782 | /* for (j=0;j<QDIO_STATS_NUMBER;j++) | |
1783 | q->timing.last_transfer_times[j]=(qdio_get_micros()/ | |
1784 | QDIO_STATS_NUMBER)*j; | |
1785 | q->timing.last_transfer_index=QDIO_STATS_NUMBER-1; | |
1786 | */ | |
1787 | ||
1788 | /* fill in slib */ | |
1789 | if (i>0) irq_ptr->input_qs[i-1]->slib->nsliba= | |
1790 | (unsigned long)(q->slib); | |
1791 | q->slib->sla=(unsigned long)(q->sl); | |
1792 | q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]); | |
1793 | ||
1794 | /* fill in sl */ | |
1795 | for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) | |
1796 | q->sl->element[j].sbal=(unsigned long)(q->sbal[j]); | |
1797 | ||
1798 | QDIO_DBF_TEXT2(0,setup,"sl-sb-b0"); | |
1799 | ptr=(void*)q->sl; | |
1800 | QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*)); | |
1801 | ptr=(void*)&q->slsb; | |
1802 | QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*)); | |
1803 | ptr=(void*)q->sbal[0]; | |
1804 | QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*)); | |
1805 | ||
1806 | /* fill in slsb */ | |
8129ee16 FP |
1807 | if (!irq_ptr->is_qebsm) { |
1808 | unsigned int count = 1; | |
1809 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) | |
1810 | set_slsb(q, &j, SLSB_P_INPUT_NOT_INIT, &count); | |
1811 | } | |
1da177e4 LT |
1812 | } |
1813 | ||
1814 | for (i=0;i<no_output_qs;i++) { | |
1815 | q=irq_ptr->output_qs[i]; | |
1816 | memset(q,0,((char*)&q->slib)-((char*)q)); | |
1817 | ||
1818 | sprintf(dbf_text,"outq%4x",i); | |
1819 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
1820 | QDIO_DBF_HEX0(0,setup,&q,sizeof(void*)); | |
1821 | ||
1822 | memset(q->slib,0,PAGE_SIZE); | |
1823 | q->sl=(struct sl*)(((char*)q->slib)+PAGE_SIZE/2); | |
1824 | ||
1825 | available=0; | |
1826 | ||
1827 | for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) | |
1828 | q->sbal[j]=*(outbound_sbals_array++); | |
1829 | ||
1830 | q->queue_type=q_format; | |
1831 | q->int_parm=int_parm; | |
1832 | q->is_input_q=0; | |
a8237fc4 | 1833 | q->schid = irq_ptr->schid; |
1da177e4 LT |
1834 | q->cdev = cdev; |
1835 | q->irq_ptr = irq_ptr; | |
1836 | q->mask=1<<(31-i); | |
1837 | q->q_no=i; | |
1838 | q->first_to_check=0; | |
1839 | q->last_move_ftc=0; | |
1840 | q->handler=output_handler; | |
1841 | ||
1842 | q->tasklet.data=(unsigned long)q; | |
1843 | q->tasklet.func=(void(*)(unsigned long)) | |
1844 | &qdio_outbound_processing; | |
1845 | ||
1846 | atomic_set(&q->busy_siga_counter,0); | |
1847 | q->timing.busy_start=0; | |
1848 | ||
1849 | /* fill in slib */ | |
1850 | if (i>0) irq_ptr->output_qs[i-1]->slib->nsliba= | |
1851 | (unsigned long)(q->slib); | |
1852 | q->slib->sla=(unsigned long)(q->sl); | |
1853 | q->slib->slsba=(unsigned long)(&q->slsb.acc.val[0]); | |
1854 | ||
1855 | /* fill in sl */ | |
1856 | for (j=0;j<QDIO_MAX_BUFFERS_PER_Q;j++) | |
1857 | q->sl->element[j].sbal=(unsigned long)(q->sbal[j]); | |
1858 | ||
1859 | QDIO_DBF_TEXT2(0,setup,"sl-sb-b0"); | |
1860 | ptr=(void*)q->sl; | |
1861 | QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*)); | |
1862 | ptr=(void*)&q->slsb; | |
1863 | QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*)); | |
1864 | ptr=(void*)q->sbal[0]; | |
1865 | QDIO_DBF_HEX2(0,setup,&ptr,sizeof(void*)); | |
1866 | ||
1867 | /* fill in slsb */ | |
8129ee16 FP |
1868 | if (!irq_ptr->is_qebsm) { |
1869 | unsigned int count = 1; | |
1870 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) | |
1871 | set_slsb(q, &j, SLSB_P_OUTPUT_NOT_INIT, &count); | |
1872 | } | |
1da177e4 LT |
1873 | } |
1874 | } | |
1875 | ||
1876 | static void | |
1877 | qdio_fill_thresholds(struct qdio_irq *irq_ptr, | |
1878 | unsigned int no_input_qs, | |
1879 | unsigned int no_output_qs, | |
1880 | unsigned int min_input_threshold, | |
1881 | unsigned int max_input_threshold, | |
1882 | unsigned int min_output_threshold, | |
1883 | unsigned int max_output_threshold) | |
1884 | { | |
1885 | int i; | |
1886 | struct qdio_q *q; | |
1887 | ||
1888 | for (i=0;i<no_input_qs;i++) { | |
1889 | q=irq_ptr->input_qs[i]; | |
1890 | q->timing.threshold=max_input_threshold; | |
1891 | /* for (j=0;j<QDIO_STATS_CLASSES;j++) { | |
1892 | q->threshold_classes[j].threshold= | |
1893 | min_input_threshold+ | |
1894 | (max_input_threshold-min_input_threshold)/ | |
1895 | QDIO_STATS_CLASSES; | |
1896 | } | |
1897 | qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/ | |
1898 | } | |
1899 | for (i=0;i<no_output_qs;i++) { | |
1900 | q=irq_ptr->output_qs[i]; | |
1901 | q->timing.threshold=max_output_threshold; | |
1902 | /* for (j=0;j<QDIO_STATS_CLASSES;j++) { | |
1903 | q->threshold_classes[j].threshold= | |
1904 | min_output_threshold+ | |
1905 | (max_output_threshold-min_output_threshold)/ | |
1906 | QDIO_STATS_CLASSES; | |
1907 | } | |
1908 | qdio_use_thresholds(q,QDIO_STATS_CLASSES/2);*/ | |
1909 | } | |
1910 | } | |
1911 | ||
1912 | static int | |
1913 | tiqdio_thinint_handler(void) | |
1914 | { | |
1915 | QDIO_DBF_TEXT4(0,trace,"thin_int"); | |
1916 | ||
1917 | #ifdef QDIO_PERFORMANCE_STATS | |
1918 | perf_stats.thinints++; | |
1919 | perf_stats.start_time_inbound=NOW; | |
1920 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1921 | ||
1922 | /* SVS only when needed: | |
1923 | * issue SVS to benefit from iqdio interrupt avoidance | |
1924 | * (SVS clears AISOI)*/ | |
1925 | if (!omit_svs) | |
1926 | tiqdio_clear_global_summary(); | |
1927 | ||
1928 | tiqdio_inbound_checks(); | |
1929 | return 0; | |
1930 | } | |
1931 | ||
1932 | static void | |
1933 | qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state) | |
1934 | { | |
1935 | int i; | |
1936 | #ifdef CONFIG_QDIO_DEBUG | |
1937 | char dbf_text[15]; | |
1938 | ||
1939 | QDIO_DBF_TEXT5(0,trace,"newstate"); | |
a8237fc4 | 1940 | sprintf(dbf_text,"%4x%4x",irq_ptr->schid.sch_no,state); |
1da177e4 LT |
1941 | QDIO_DBF_TEXT5(0,trace,dbf_text); |
1942 | #endif /* CONFIG_QDIO_DEBUG */ | |
1943 | ||
1944 | irq_ptr->state=state; | |
1945 | for (i=0;i<irq_ptr->no_input_qs;i++) | |
1946 | irq_ptr->input_qs[i]->state=state; | |
1947 | for (i=0;i<irq_ptr->no_output_qs;i++) | |
1948 | irq_ptr->output_qs[i]->state=state; | |
1949 | mb(); | |
1950 | } | |
1951 | ||
1952 | static inline void | |
a8237fc4 | 1953 | qdio_irq_check_sense(struct subchannel_id schid, struct irb *irb) |
1da177e4 LT |
1954 | { |
1955 | char dbf_text[15]; | |
1956 | ||
1957 | if (irb->esw.esw0.erw.cons) { | |
a8237fc4 | 1958 | sprintf(dbf_text,"sens%4x",schid.sch_no); |
1da177e4 LT |
1959 | QDIO_DBF_TEXT2(1,trace,dbf_text); |
1960 | QDIO_DBF_HEX0(0,sense,irb,QDIO_DBF_SENSE_LEN); | |
1961 | ||
1962 | QDIO_PRINT_WARN("sense data available on qdio channel.\n"); | |
1963 | HEXDUMP16(WARN,"irb: ",irb); | |
1964 | HEXDUMP16(WARN,"sense data: ",irb->ecw); | |
1965 | } | |
1966 | ||
1967 | } | |
1968 | ||
1969 | static inline void | |
1970 | qdio_handle_pci(struct qdio_irq *irq_ptr) | |
1971 | { | |
1972 | int i; | |
1973 | struct qdio_q *q; | |
1974 | ||
1975 | #ifdef QDIO_PERFORMANCE_STATS | |
1976 | perf_stats.pcis++; | |
1977 | perf_stats.start_time_inbound=NOW; | |
1978 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1979 | for (i=0;i<irq_ptr->no_input_qs;i++) { | |
1980 | q=irq_ptr->input_qs[i]; | |
1981 | if (q->is_input_q&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT) | |
1982 | qdio_mark_q(q); | |
1983 | else { | |
1984 | #ifdef QDIO_PERFORMANCE_STATS | |
1985 | perf_stats.tl_runs--; | |
1986 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1987 | __qdio_inbound_processing(q); | |
1988 | } | |
1989 | } | |
1990 | if (!irq_ptr->hydra_gives_outbound_pcis) | |
1991 | return; | |
1992 | for (i=0;i<irq_ptr->no_output_qs;i++) { | |
1993 | q=irq_ptr->output_qs[i]; | |
1994 | #ifdef QDIO_PERFORMANCE_STATS | |
1995 | perf_stats.tl_runs--; | |
1996 | #endif /* QDIO_PERFORMANCE_STATS */ | |
1997 | if (qdio_is_outbound_q_done(q)) | |
1998 | continue; | |
1999 | if (!irq_ptr->sync_done_on_outb_pcis) | |
2000 | SYNC_MEMORY; | |
2001 | __qdio_outbound_processing(q); | |
2002 | } | |
2003 | } | |
2004 | ||
2005 | static void qdio_establish_handle_irq(struct ccw_device*, int, int); | |
2006 | ||
2007 | static inline void | |
2008 | qdio_handle_activate_check(struct ccw_device *cdev, unsigned long intparm, | |
2009 | int cstat, int dstat) | |
2010 | { | |
2011 | struct qdio_irq *irq_ptr; | |
2012 | struct qdio_q *q; | |
2013 | char dbf_text[15]; | |
2014 | ||
2015 | irq_ptr = cdev->private->qdio_data; | |
2016 | ||
2017 | QDIO_DBF_TEXT2(1, trace, "ick2"); | |
2018 | sprintf(dbf_text,"%s", cdev->dev.bus_id); | |
2019 | QDIO_DBF_TEXT2(1,trace,dbf_text); | |
2020 | QDIO_DBF_HEX2(0,trace,&intparm,sizeof(int)); | |
2021 | QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int)); | |
2022 | QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int)); | |
2023 | QDIO_PRINT_ERR("received check condition on activate " \ | |
2024 | "queues on device %s (cs=x%x, ds=x%x).\n", | |
2025 | cdev->dev.bus_id, cstat, dstat); | |
2026 | if (irq_ptr->no_input_qs) { | |
2027 | q=irq_ptr->input_qs[0]; | |
2028 | } else if (irq_ptr->no_output_qs) { | |
2029 | q=irq_ptr->output_qs[0]; | |
2030 | } else { | |
2031 | QDIO_PRINT_ERR("oops... no queue registered for device %s!?\n", | |
2032 | cdev->dev.bus_id); | |
2033 | goto omit_handler_call; | |
2034 | } | |
2035 | q->handler(q->cdev,QDIO_STATUS_ACTIVATE_CHECK_CONDITION| | |
2036 | QDIO_STATUS_LOOK_FOR_ERROR, | |
2037 | 0,0,0,-1,-1,q->int_parm); | |
2038 | omit_handler_call: | |
2039 | qdio_set_state(irq_ptr,QDIO_IRQ_STATE_STOPPED); | |
2040 | ||
2041 | } | |
2042 | ||
2043 | static void | |
2044 | qdio_call_shutdown(void *data) | |
2045 | { | |
2046 | struct ccw_device *cdev; | |
2047 | ||
2048 | cdev = (struct ccw_device *)data; | |
2049 | qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR); | |
2050 | put_device(&cdev->dev); | |
2051 | } | |
2052 | ||
2053 | static void | |
2054 | qdio_timeout_handler(struct ccw_device *cdev) | |
2055 | { | |
2056 | struct qdio_irq *irq_ptr; | |
2057 | char dbf_text[15]; | |
2058 | ||
2059 | QDIO_DBF_TEXT2(0, trace, "qtoh"); | |
2060 | sprintf(dbf_text, "%s", cdev->dev.bus_id); | |
2061 | QDIO_DBF_TEXT2(0, trace, dbf_text); | |
2062 | ||
2063 | irq_ptr = cdev->private->qdio_data; | |
2064 | sprintf(dbf_text, "state:%d", irq_ptr->state); | |
2065 | QDIO_DBF_TEXT2(0, trace, dbf_text); | |
2066 | ||
2067 | switch (irq_ptr->state) { | |
2068 | case QDIO_IRQ_STATE_INACTIVE: | |
fb6958a5 CH |
2069 | QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: timed out\n", |
2070 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no); | |
1da177e4 LT |
2071 | QDIO_DBF_TEXT2(1,setup,"eq:timeo"); |
2072 | qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR); | |
2073 | break; | |
2074 | case QDIO_IRQ_STATE_CLEANUP: | |
fb6958a5 CH |
2075 | QDIO_PRINT_INFO("Did not get interrupt on cleanup, " |
2076 | "irq=0.%x.%x.\n", | |
2077 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no); | |
1da177e4 LT |
2078 | qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR); |
2079 | break; | |
2080 | case QDIO_IRQ_STATE_ESTABLISHED: | |
2081 | case QDIO_IRQ_STATE_ACTIVE: | |
2082 | /* I/O has been terminated by common I/O layer. */ | |
fb6958a5 CH |
2083 | QDIO_PRINT_INFO("Queues on irq 0.%x.%04x killed by cio.\n", |
2084 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no); | |
1da177e4 LT |
2085 | QDIO_DBF_TEXT2(1, trace, "cio:term"); |
2086 | qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED); | |
2087 | if (get_device(&cdev->dev)) { | |
2088 | /* Can't call shutdown from interrupt context. */ | |
2089 | PREPARE_WORK(&cdev->private->kick_work, | |
2090 | qdio_call_shutdown, (void *)cdev); | |
2091 | queue_work(ccw_device_work, &cdev->private->kick_work); | |
2092 | } | |
2093 | break; | |
2094 | default: | |
2095 | BUG(); | |
2096 | } | |
2097 | ccw_device_set_timeout(cdev, 0); | |
2098 | wake_up(&cdev->private->wait_q); | |
2099 | } | |
2100 | ||
2101 | static void | |
2102 | qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) | |
2103 | { | |
2104 | struct qdio_irq *irq_ptr; | |
2105 | int cstat,dstat; | |
2106 | char dbf_text[15]; | |
2107 | ||
2108 | #ifdef CONFIG_QDIO_DEBUG | |
2109 | QDIO_DBF_TEXT4(0, trace, "qint"); | |
2110 | sprintf(dbf_text, "%s", cdev->dev.bus_id); | |
2111 | QDIO_DBF_TEXT4(0, trace, dbf_text); | |
2112 | #endif /* CONFIG_QDIO_DEBUG */ | |
2113 | ||
2114 | if (!intparm) { | |
2115 | QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \ | |
2116 | "handler, device %s\n", cdev->dev.bus_id); | |
2117 | return; | |
2118 | } | |
2119 | ||
2120 | irq_ptr = cdev->private->qdio_data; | |
2121 | if (!irq_ptr) { | |
2122 | QDIO_DBF_TEXT2(1, trace, "uint"); | |
2123 | sprintf(dbf_text,"%s", cdev->dev.bus_id); | |
2124 | QDIO_DBF_TEXT2(1,trace,dbf_text); | |
2125 | QDIO_PRINT_ERR("received interrupt on unused device %s!\n", | |
2126 | cdev->dev.bus_id); | |
2127 | return; | |
2128 | } | |
2129 | ||
2130 | if (IS_ERR(irb)) { | |
2131 | /* Currently running i/o is in error. */ | |
2132 | switch (PTR_ERR(irb)) { | |
2133 | case -EIO: | |
2134 | QDIO_PRINT_ERR("i/o error on device %s\n", | |
2135 | cdev->dev.bus_id); | |
2136 | return; | |
2137 | case -ETIMEDOUT: | |
2138 | qdio_timeout_handler(cdev); | |
2139 | return; | |
2140 | default: | |
2141 | QDIO_PRINT_ERR("unknown error state %ld on device %s\n", | |
2142 | PTR_ERR(irb), cdev->dev.bus_id); | |
2143 | return; | |
2144 | } | |
2145 | } | |
2146 | ||
a8237fc4 | 2147 | qdio_irq_check_sense(irq_ptr->schid, irb); |
1da177e4 LT |
2148 | |
2149 | #ifdef CONFIG_QDIO_DEBUG | |
2150 | sprintf(dbf_text, "state:%d", irq_ptr->state); | |
2151 | QDIO_DBF_TEXT4(0, trace, dbf_text); | |
2152 | #endif /* CONFIG_QDIO_DEBUG */ | |
2153 | ||
2154 | cstat = irb->scsw.cstat; | |
2155 | dstat = irb->scsw.dstat; | |
2156 | ||
2157 | switch (irq_ptr->state) { | |
2158 | case QDIO_IRQ_STATE_INACTIVE: | |
2159 | qdio_establish_handle_irq(cdev, cstat, dstat); | |
2160 | break; | |
2161 | ||
2162 | case QDIO_IRQ_STATE_CLEANUP: | |
2163 | qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE); | |
2164 | break; | |
2165 | ||
2166 | case QDIO_IRQ_STATE_ESTABLISHED: | |
2167 | case QDIO_IRQ_STATE_ACTIVE: | |
2168 | if (cstat & SCHN_STAT_PCI) { | |
2169 | qdio_handle_pci(irq_ptr); | |
2170 | break; | |
2171 | } | |
2172 | ||
2173 | if ((cstat&~SCHN_STAT_PCI)||dstat) { | |
2174 | qdio_handle_activate_check(cdev, intparm, cstat, dstat); | |
2175 | break; | |
2176 | } | |
2177 | default: | |
2178 | QDIO_PRINT_ERR("got interrupt for queues in state %d on " \ | |
2179 | "device %s?!\n", | |
2180 | irq_ptr->state, cdev->dev.bus_id); | |
2181 | } | |
2182 | wake_up(&cdev->private->wait_q); | |
2183 | ||
2184 | } | |
2185 | ||
2186 | int | |
2187 | qdio_synchronize(struct ccw_device *cdev, unsigned int flags, | |
2188 | unsigned int queue_number) | |
2189 | { | |
8129ee16 | 2190 | int cc = 0; |
1da177e4 LT |
2191 | struct qdio_q *q; |
2192 | struct qdio_irq *irq_ptr; | |
2193 | void *ptr; | |
2194 | #ifdef CONFIG_QDIO_DEBUG | |
2195 | char dbf_text[15]="SyncXXXX"; | |
2196 | #endif | |
2197 | ||
2198 | irq_ptr = cdev->private->qdio_data; | |
2199 | if (!irq_ptr) | |
2200 | return -ENODEV; | |
2201 | ||
2202 | #ifdef CONFIG_QDIO_DEBUG | |
a8237fc4 | 2203 | *((int*)(&dbf_text[4])) = irq_ptr->schid.sch_no; |
1da177e4 LT |
2204 | QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN); |
2205 | *((int*)(&dbf_text[0]))=flags; | |
2206 | *((int*)(&dbf_text[4]))=queue_number; | |
2207 | QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN); | |
2208 | #endif /* CONFIG_QDIO_DEBUG */ | |
2209 | ||
2210 | if (flags&QDIO_FLAG_SYNC_INPUT) { | |
2211 | q=irq_ptr->input_qs[queue_number]; | |
2212 | if (!q) | |
2213 | return -EINVAL; | |
8129ee16 | 2214 | if (!(irq_ptr->is_qebsm)) |
a8237fc4 | 2215 | cc = do_siga_sync(q->schid, 0, q->mask); |
1da177e4 LT |
2216 | } else if (flags&QDIO_FLAG_SYNC_OUTPUT) { |
2217 | q=irq_ptr->output_qs[queue_number]; | |
2218 | if (!q) | |
2219 | return -EINVAL; | |
8129ee16 | 2220 | if (!(irq_ptr->is_qebsm)) |
a8237fc4 | 2221 | cc = do_siga_sync(q->schid, q->mask, 0); |
1da177e4 LT |
2222 | } else |
2223 | return -EINVAL; | |
2224 | ||
2225 | ptr=&cc; | |
2226 | if (cc) | |
2227 | QDIO_DBF_HEX3(0,trace,&ptr,sizeof(int)); | |
2228 | ||
2229 | return cc; | |
2230 | } | |
2231 | ||
8129ee16 FP |
2232 | static inline void |
2233 | qdio_check_subchannel_qebsm(struct qdio_irq *irq_ptr, unsigned char qdioac, | |
2234 | unsigned long token) | |
2235 | { | |
2236 | struct qdio_q *q; | |
2237 | int i; | |
2238 | unsigned int count, start_buf; | |
2239 | char dbf_text[15]; | |
2240 | ||
2241 | /*check if QEBSM is disabled */ | |
2242 | if (!(irq_ptr->is_qebsm) || !(qdioac & 0x01)) { | |
2243 | irq_ptr->is_qebsm = 0; | |
2244 | irq_ptr->sch_token = 0; | |
2245 | irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM; | |
2246 | QDIO_DBF_TEXT0(0,setup,"noV=V"); | |
2247 | return; | |
2248 | } | |
2249 | irq_ptr->sch_token = token; | |
2250 | /*input queue*/ | |
2251 | for (i = 0; i < irq_ptr->no_input_qs;i++) { | |
2252 | q = irq_ptr->input_qs[i]; | |
2253 | count = QDIO_MAX_BUFFERS_PER_Q; | |
2254 | start_buf = 0; | |
2255 | set_slsb(q, &start_buf, SLSB_P_INPUT_NOT_INIT, &count); | |
2256 | } | |
2257 | sprintf(dbf_text,"V=V:%2x",irq_ptr->is_qebsm); | |
2258 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2259 | sprintf(dbf_text,"%8lx",irq_ptr->sch_token); | |
2260 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2261 | /*output queue*/ | |
2262 | for (i = 0; i < irq_ptr->no_output_qs; i++) { | |
2263 | q = irq_ptr->output_qs[i]; | |
2264 | count = QDIO_MAX_BUFFERS_PER_Q; | |
2265 | start_buf = 0; | |
2266 | set_slsb(q, &start_buf, SLSB_P_OUTPUT_NOT_INIT, &count); | |
2267 | } | |
2268 | } | |
2269 | ||
2270 | static void | |
2271 | qdio_get_ssqd_information(struct qdio_irq *irq_ptr) | |
1da177e4 LT |
2272 | { |
2273 | int result; | |
2274 | unsigned char qdioac; | |
1da177e4 LT |
2275 | struct { |
2276 | struct chsc_header request; | |
fb6958a5 CH |
2277 | u16 reserved1:10; |
2278 | u16 ssid:2; | |
2279 | u16 fmt:4; | |
1da177e4 LT |
2280 | u16 first_sch; |
2281 | u16 reserved2; | |
2282 | u16 last_sch; | |
2283 | u32 reserved3; | |
2284 | struct chsc_header response; | |
2285 | u32 reserved4; | |
2286 | u8 flags; | |
2287 | u8 reserved5; | |
2288 | u16 sch; | |
2289 | u8 qfmt; | |
8129ee16 FP |
2290 | u8 parm; |
2291 | u8 qdioac1; | |
1da177e4 LT |
2292 | u8 sch_class; |
2293 | u8 reserved7; | |
2294 | u8 icnt; | |
2295 | u8 reserved8; | |
2296 | u8 ocnt; | |
8129ee16 FP |
2297 | u8 reserved9; |
2298 | u8 mbccnt; | |
2299 | u16 qdioac2; | |
2300 | u64 sch_token; | |
1da177e4 LT |
2301 | } *ssqd_area; |
2302 | ||
8129ee16 FP |
2303 | QDIO_DBF_TEXT0(0,setup,"getssqd"); |
2304 | qdioac = 0; | |
1da177e4 LT |
2305 | ssqd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); |
2306 | if (!ssqd_area) { | |
2307 | QDIO_PRINT_WARN("Could not get memory for chsc. Using all " \ | |
a8237fc4 | 2308 | "SIGAs for sch x%x.\n", irq_ptr->schid.sch_no); |
8129ee16 FP |
2309 | irq_ptr->qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY || |
2310 | CHSC_FLAG_SIGA_OUTPUT_NECESSARY || | |
2311 | CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */ | |
2312 | irq_ptr->is_qebsm = 0; | |
2313 | irq_ptr->sch_token = 0; | |
2314 | irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM; | |
2315 | return; | |
1da177e4 | 2316 | } |
8129ee16 | 2317 | |
1da177e4 LT |
2318 | ssqd_area->request = (struct chsc_header) { |
2319 | .length = 0x0010, | |
2320 | .code = 0x0024, | |
2321 | }; | |
a8237fc4 CH |
2322 | ssqd_area->first_sch = irq_ptr->schid.sch_no; |
2323 | ssqd_area->last_sch = irq_ptr->schid.sch_no; | |
fb6958a5 | 2324 | ssqd_area->ssid = irq_ptr->schid.ssid; |
8129ee16 | 2325 | result = chsc(ssqd_area); |
1da177e4 LT |
2326 | |
2327 | if (result) { | |
2328 | QDIO_PRINT_WARN("CHSC returned cc %i. Using all " \ | |
fb6958a5 CH |
2329 | "SIGAs for sch 0.%x.%x.\n", result, |
2330 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no); | |
1da177e4 LT |
2331 | qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY || |
2332 | CHSC_FLAG_SIGA_OUTPUT_NECESSARY || | |
2333 | CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */ | |
8129ee16 | 2334 | irq_ptr->is_qebsm = 0; |
1da177e4 LT |
2335 | goto out; |
2336 | } | |
2337 | ||
2338 | if (ssqd_area->response.code != QDIO_CHSC_RESPONSE_CODE_OK) { | |
2339 | QDIO_PRINT_WARN("response upon checking SIGA needs " \ | |
fb6958a5 CH |
2340 | "is 0x%x. Using all SIGAs for sch 0.%x.%x.\n", |
2341 | ssqd_area->response.code, | |
2342 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no); | |
1da177e4 LT |
2343 | qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY || |
2344 | CHSC_FLAG_SIGA_OUTPUT_NECESSARY || | |
2345 | CHSC_FLAG_SIGA_SYNC_NECESSARY; /* all flags set */ | |
8129ee16 | 2346 | irq_ptr->is_qebsm = 0; |
1da177e4 LT |
2347 | goto out; |
2348 | } | |
2349 | if (!(ssqd_area->flags & CHSC_FLAG_QDIO_CAPABILITY) || | |
2350 | !(ssqd_area->flags & CHSC_FLAG_VALIDITY) || | |
a8237fc4 | 2351 | (ssqd_area->sch != irq_ptr->schid.sch_no)) { |
fb6958a5 CH |
2352 | QDIO_PRINT_WARN("huh? problems checking out sch 0.%x.%x... " \ |
2353 | "using all SIGAs.\n", | |
2354 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no); | |
1da177e4 LT |
2355 | qdioac = CHSC_FLAG_SIGA_INPUT_NECESSARY | |
2356 | CHSC_FLAG_SIGA_OUTPUT_NECESSARY | | |
2357 | CHSC_FLAG_SIGA_SYNC_NECESSARY; /* worst case */ | |
8129ee16 | 2358 | irq_ptr->is_qebsm = 0; |
1da177e4 LT |
2359 | goto out; |
2360 | } | |
8129ee16 | 2361 | qdioac = ssqd_area->qdioac1; |
1da177e4 | 2362 | out: |
8129ee16 FP |
2363 | qdio_check_subchannel_qebsm(irq_ptr, qdioac, |
2364 | ssqd_area->sch_token); | |
1da177e4 | 2365 | free_page ((unsigned long) ssqd_area); |
8129ee16 | 2366 | irq_ptr->qdioac = qdioac; |
1da177e4 LT |
2367 | } |
2368 | ||
2369 | static unsigned int | |
2370 | tiqdio_check_chsc_availability(void) | |
2371 | { | |
2372 | char dbf_text[15]; | |
2373 | ||
2374 | if (!css_characteristics_avail) | |
2375 | return -EIO; | |
2376 | ||
2377 | /* Check for bit 41. */ | |
2378 | if (!css_general_characteristics.aif) { | |
2379 | QDIO_PRINT_WARN("Adapter interruption facility not " \ | |
2380 | "installed.\n"); | |
2381 | return -ENOENT; | |
2382 | } | |
2383 | ||
2384 | /* Check for bits 107 and 108. */ | |
2385 | if (!css_chsc_characteristics.scssc || | |
2386 | !css_chsc_characteristics.scsscf) { | |
2387 | QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \ | |
2388 | "not available.\n"); | |
2389 | return -ENOENT; | |
2390 | } | |
2391 | ||
2392 | /* Check for OSA/FCP thin interrupts (bit 67). */ | |
2393 | hydra_thinints = css_general_characteristics.aif_osa; | |
2394 | sprintf(dbf_text,"hydrati%1x", hydra_thinints); | |
2395 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2396 | ||
8129ee16 FP |
2397 | #ifdef CONFIG_ARCH_S390X |
2398 | /* Check for QEBSM support in general (bit 58). */ | |
2399 | is_passthrough = css_general_characteristics.qebsm; | |
2400 | #endif | |
2401 | sprintf(dbf_text,"cssQBS:%1x", is_passthrough); | |
2402 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2403 | ||
1da177e4 LT |
2404 | /* Check for aif time delay disablement fac (bit 56). If installed, |
2405 | * omit svs even under lpar (good point by rick again) */ | |
2406 | omit_svs = css_general_characteristics.aif_tdd; | |
2407 | sprintf(dbf_text,"omitsvs%1x", omit_svs); | |
2408 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2409 | return 0; | |
2410 | } | |
2411 | ||
2412 | ||
2413 | static unsigned int | |
2414 | tiqdio_set_subchannel_ind(struct qdio_irq *irq_ptr, int reset_to_zero) | |
2415 | { | |
2416 | unsigned long real_addr_local_summary_bit; | |
2417 | unsigned long real_addr_dev_st_chg_ind; | |
2418 | void *ptr; | |
2419 | char dbf_text[15]; | |
2420 | ||
2421 | unsigned int resp_code; | |
2422 | int result; | |
2423 | ||
2424 | struct { | |
2425 | struct chsc_header request; | |
2426 | u16 operation_code; | |
2427 | u16 reserved1; | |
2428 | u32 reserved2; | |
2429 | u32 reserved3; | |
2430 | u64 summary_indicator_addr; | |
2431 | u64 subchannel_indicator_addr; | |
2432 | u32 ks:4; | |
2433 | u32 kc:4; | |
2434 | u32 reserved4:21; | |
2435 | u32 isc:3; | |
2436 | u32 word_with_d_bit; | |
2437 | /* set to 0x10000000 to enable | |
2438 | * time delay disablement facility */ | |
2439 | u32 reserved5; | |
a8237fc4 | 2440 | struct subchannel_id schid; |
1da177e4 LT |
2441 | u32 reserved6[1004]; |
2442 | struct chsc_header response; | |
2443 | u32 reserved7; | |
2444 | } *scssc_area; | |
2445 | ||
2446 | if (!irq_ptr->is_thinint_irq) | |
2447 | return -ENODEV; | |
2448 | ||
2449 | if (reset_to_zero) { | |
2450 | real_addr_local_summary_bit=0; | |
2451 | real_addr_dev_st_chg_ind=0; | |
2452 | } else { | |
2453 | real_addr_local_summary_bit= | |
2454 | virt_to_phys((volatile void *)indicators); | |
2455 | real_addr_dev_st_chg_ind= | |
2456 | virt_to_phys((volatile void *)irq_ptr->dev_st_chg_ind); | |
2457 | } | |
2458 | ||
2459 | scssc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); | |
2460 | if (!scssc_area) { | |
2461 | QDIO_PRINT_WARN("No memory for setting indicators on " \ | |
fb6958a5 CH |
2462 | "subchannel 0.%x.%x.\n", |
2463 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no); | |
1da177e4 LT |
2464 | return -ENOMEM; |
2465 | } | |
2466 | scssc_area->request = (struct chsc_header) { | |
2467 | .length = 0x0fe0, | |
2468 | .code = 0x0021, | |
2469 | }; | |
2470 | scssc_area->operation_code = 0; | |
2471 | ||
2472 | scssc_area->summary_indicator_addr = real_addr_local_summary_bit; | |
2473 | scssc_area->subchannel_indicator_addr = real_addr_dev_st_chg_ind; | |
2474 | scssc_area->ks = QDIO_STORAGE_KEY; | |
2475 | scssc_area->kc = QDIO_STORAGE_KEY; | |
2476 | scssc_area->isc = TIQDIO_THININT_ISC; | |
a8237fc4 | 2477 | scssc_area->schid = irq_ptr->schid; |
1da177e4 LT |
2478 | /* enables the time delay disablement facility. Don't care |
2479 | * whether it is really there (i.e. we haven't checked for | |
2480 | * it) */ | |
2481 | if (css_general_characteristics.aif_tdd) | |
2482 | scssc_area->word_with_d_bit = 0x10000000; | |
2483 | else | |
2484 | QDIO_PRINT_WARN("Time delay disablement facility " \ | |
2485 | "not available\n"); | |
2486 | ||
1da177e4 LT |
2487 | result = chsc(scssc_area); |
2488 | if (result) { | |
fb6958a5 CH |
2489 | QDIO_PRINT_WARN("could not set indicators on irq 0.%x.%x, " \ |
2490 | "cc=%i.\n", | |
2491 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no,result); | |
1da177e4 LT |
2492 | result = -EIO; |
2493 | goto out; | |
2494 | } | |
2495 | ||
2496 | resp_code = scssc_area->response.code; | |
2497 | if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) { | |
2498 | QDIO_PRINT_WARN("response upon setting indicators " \ | |
2499 | "is 0x%x.\n",resp_code); | |
2500 | sprintf(dbf_text,"sidR%4x",resp_code); | |
2501 | QDIO_DBF_TEXT1(0,trace,dbf_text); | |
2502 | QDIO_DBF_TEXT1(0,setup,dbf_text); | |
2503 | ptr=&scssc_area->response; | |
2504 | QDIO_DBF_HEX2(1,setup,&ptr,QDIO_DBF_SETUP_LEN); | |
2505 | result = -EIO; | |
2506 | goto out; | |
2507 | } | |
2508 | ||
2509 | QDIO_DBF_TEXT2(0,setup,"setscind"); | |
2510 | QDIO_DBF_HEX2(0,setup,&real_addr_local_summary_bit, | |
2511 | sizeof(unsigned long)); | |
2512 | QDIO_DBF_HEX2(0,setup,&real_addr_dev_st_chg_ind,sizeof(unsigned long)); | |
2513 | result = 0; | |
2514 | out: | |
2515 | free_page ((unsigned long) scssc_area); | |
2516 | return result; | |
2517 | ||
2518 | } | |
2519 | ||
2520 | static unsigned int | |
2521 | tiqdio_set_delay_target(struct qdio_irq *irq_ptr, unsigned long delay_target) | |
2522 | { | |
2523 | unsigned int resp_code; | |
2524 | int result; | |
2525 | void *ptr; | |
2526 | char dbf_text[15]; | |
2527 | ||
2528 | struct { | |
2529 | struct chsc_header request; | |
2530 | u16 operation_code; | |
2531 | u16 reserved1; | |
2532 | u32 reserved2; | |
2533 | u32 reserved3; | |
2534 | u32 reserved4[2]; | |
2535 | u32 delay_target; | |
2536 | u32 reserved5[1009]; | |
2537 | struct chsc_header response; | |
2538 | u32 reserved6; | |
2539 | } *scsscf_area; | |
2540 | ||
2541 | if (!irq_ptr->is_thinint_irq) | |
2542 | return -ENODEV; | |
2543 | ||
2544 | scsscf_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); | |
2545 | if (!scsscf_area) { | |
2546 | QDIO_PRINT_WARN("No memory for setting delay target on " \ | |
fb6958a5 CH |
2547 | "subchannel 0.%x.%x.\n", |
2548 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no); | |
1da177e4 LT |
2549 | return -ENOMEM; |
2550 | } | |
2551 | scsscf_area->request = (struct chsc_header) { | |
2552 | .length = 0x0fe0, | |
2553 | .code = 0x1027, | |
2554 | }; | |
2555 | ||
2556 | scsscf_area->delay_target = delay_target<<16; | |
2557 | ||
2558 | result=chsc(scsscf_area); | |
2559 | if (result) { | |
fb6958a5 CH |
2560 | QDIO_PRINT_WARN("could not set delay target on irq 0.%x.%x, " \ |
2561 | "cc=%i. Continuing.\n", | |
2562 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no, | |
a8237fc4 | 2563 | result); |
1da177e4 LT |
2564 | result = -EIO; |
2565 | goto out; | |
2566 | } | |
2567 | ||
2568 | resp_code = scsscf_area->response.code; | |
2569 | if (resp_code!=QDIO_CHSC_RESPONSE_CODE_OK) { | |
2570 | QDIO_PRINT_WARN("response upon setting delay target " \ | |
2571 | "is 0x%x. Continuing.\n",resp_code); | |
2572 | sprintf(dbf_text,"sdtR%4x",resp_code); | |
2573 | QDIO_DBF_TEXT1(0,trace,dbf_text); | |
2574 | QDIO_DBF_TEXT1(0,setup,dbf_text); | |
2575 | ptr=&scsscf_area->response; | |
2576 | QDIO_DBF_HEX2(1,trace,&ptr,QDIO_DBF_TRACE_LEN); | |
2577 | } | |
2578 | QDIO_DBF_TEXT2(0,trace,"delytrgt"); | |
2579 | QDIO_DBF_HEX2(0,trace,&delay_target,sizeof(unsigned long)); | |
2580 | result = 0; /* not critical */ | |
2581 | out: | |
2582 | free_page ((unsigned long) scsscf_area); | |
2583 | return result; | |
2584 | } | |
2585 | ||
2586 | int | |
2587 | qdio_cleanup(struct ccw_device *cdev, int how) | |
2588 | { | |
2589 | struct qdio_irq *irq_ptr; | |
2590 | char dbf_text[15]; | |
2591 | int rc; | |
2592 | ||
2593 | irq_ptr = cdev->private->qdio_data; | |
2594 | if (!irq_ptr) | |
2595 | return -ENODEV; | |
2596 | ||
a8237fc4 | 2597 | sprintf(dbf_text,"qcln%4x",irq_ptr->schid.sch_no); |
1da177e4 LT |
2598 | QDIO_DBF_TEXT1(0,trace,dbf_text); |
2599 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2600 | ||
2601 | rc = qdio_shutdown(cdev, how); | |
2602 | if ((rc == 0) || (rc == -EINPROGRESS)) | |
2603 | rc = qdio_free(cdev); | |
2604 | return rc; | |
2605 | } | |
2606 | ||
2607 | int | |
2608 | qdio_shutdown(struct ccw_device *cdev, int how) | |
2609 | { | |
2610 | struct qdio_irq *irq_ptr; | |
2611 | int i; | |
2612 | int result = 0; | |
2613 | int rc; | |
2614 | unsigned long flags; | |
2615 | int timeout; | |
2616 | char dbf_text[15]; | |
2617 | ||
2618 | irq_ptr = cdev->private->qdio_data; | |
2619 | if (!irq_ptr) | |
2620 | return -ENODEV; | |
2621 | ||
2622 | down(&irq_ptr->setting_up_sema); | |
2623 | ||
a8237fc4 | 2624 | sprintf(dbf_text,"qsqs%4x",irq_ptr->schid.sch_no); |
1da177e4 LT |
2625 | QDIO_DBF_TEXT1(0,trace,dbf_text); |
2626 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2627 | ||
2628 | /* mark all qs as uninteresting */ | |
2629 | for (i=0;i<irq_ptr->no_input_qs;i++) | |
2630 | atomic_set(&irq_ptr->input_qs[i]->is_in_shutdown,1); | |
2631 | ||
2632 | for (i=0;i<irq_ptr->no_output_qs;i++) | |
2633 | atomic_set(&irq_ptr->output_qs[i]->is_in_shutdown,1); | |
2634 | ||
2635 | tasklet_kill(&tiqdio_tasklet); | |
2636 | ||
2637 | for (i=0;i<irq_ptr->no_input_qs;i++) { | |
2638 | qdio_unmark_q(irq_ptr->input_qs[i]); | |
2639 | tasklet_kill(&irq_ptr->input_qs[i]->tasklet); | |
2640 | wait_event_interruptible_timeout(cdev->private->wait_q, | |
2641 | !atomic_read(&irq_ptr-> | |
2642 | input_qs[i]-> | |
2643 | use_count), | |
2644 | QDIO_NO_USE_COUNT_TIMEOUT); | |
2645 | if (atomic_read(&irq_ptr->input_qs[i]->use_count)) | |
2646 | result=-EINPROGRESS; | |
2647 | } | |
2648 | ||
2649 | for (i=0;i<irq_ptr->no_output_qs;i++) { | |
2650 | tasklet_kill(&irq_ptr->output_qs[i]->tasklet); | |
2651 | wait_event_interruptible_timeout(cdev->private->wait_q, | |
2652 | !atomic_read(&irq_ptr-> | |
2653 | output_qs[i]-> | |
2654 | use_count), | |
2655 | QDIO_NO_USE_COUNT_TIMEOUT); | |
2656 | if (atomic_read(&irq_ptr->output_qs[i]->use_count)) | |
2657 | result=-EINPROGRESS; | |
2658 | } | |
2659 | ||
2660 | /* cleanup subchannel */ | |
2661 | spin_lock_irqsave(get_ccwdev_lock(cdev),flags); | |
2662 | if (how&QDIO_FLAG_CLEANUP_USING_CLEAR) { | |
2663 | rc = ccw_device_clear(cdev, QDIO_DOING_CLEANUP); | |
2664 | timeout=QDIO_CLEANUP_CLEAR_TIMEOUT; | |
2665 | } else if (how&QDIO_FLAG_CLEANUP_USING_HALT) { | |
2666 | rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP); | |
2667 | timeout=QDIO_CLEANUP_HALT_TIMEOUT; | |
2668 | } else { /* default behaviour */ | |
2669 | rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP); | |
2670 | timeout=QDIO_CLEANUP_HALT_TIMEOUT; | |
2671 | } | |
2672 | if (rc == -ENODEV) { | |
2673 | /* No need to wait for device no longer present. */ | |
2674 | qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE); | |
2675 | spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags); | |
2676 | } else if (((void *)cdev->handler != (void *)qdio_handler) && rc == 0) { | |
2677 | /* | |
2678 | * Whoever put another handler there, has to cope with the | |
2679 | * interrupt theirself. Might happen if qdio_shutdown was | |
2680 | * called on already shutdown queues, but this shouldn't have | |
2681 | * bad side effects. | |
2682 | */ | |
2683 | qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE); | |
2684 | spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags); | |
2685 | } else if (rc == 0) { | |
2686 | qdio_set_state(irq_ptr, QDIO_IRQ_STATE_CLEANUP); | |
2687 | ccw_device_set_timeout(cdev, timeout); | |
2688 | spin_unlock_irqrestore(get_ccwdev_lock(cdev),flags); | |
2689 | ||
2690 | wait_event(cdev->private->wait_q, | |
2691 | irq_ptr->state == QDIO_IRQ_STATE_INACTIVE || | |
2692 | irq_ptr->state == QDIO_IRQ_STATE_ERR); | |
2693 | } else { | |
2694 | QDIO_PRINT_INFO("ccw_device_{halt,clear} returned %d for " | |
2695 | "device %s\n", result, cdev->dev.bus_id); | |
2696 | spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags); | |
2697 | result = rc; | |
2698 | goto out; | |
2699 | } | |
2700 | if (irq_ptr->is_thinint_irq) { | |
2701 | qdio_put_indicator((__u32*)irq_ptr->dev_st_chg_ind); | |
2702 | tiqdio_set_subchannel_ind(irq_ptr,1); | |
2703 | /* reset adapter interrupt indicators */ | |
2704 | } | |
2705 | ||
2706 | /* exchange int handlers, if necessary */ | |
2707 | if ((void*)cdev->handler == (void*)qdio_handler) | |
2708 | cdev->handler=irq_ptr->original_int_handler; | |
2709 | ||
2710 | /* Ignore errors. */ | |
2711 | qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE); | |
2712 | ccw_device_set_timeout(cdev, 0); | |
2713 | out: | |
2714 | up(&irq_ptr->setting_up_sema); | |
2715 | return result; | |
2716 | } | |
2717 | ||
2718 | int | |
2719 | qdio_free(struct ccw_device *cdev) | |
2720 | { | |
2721 | struct qdio_irq *irq_ptr; | |
2722 | char dbf_text[15]; | |
2723 | ||
2724 | irq_ptr = cdev->private->qdio_data; | |
2725 | if (!irq_ptr) | |
2726 | return -ENODEV; | |
2727 | ||
2728 | down(&irq_ptr->setting_up_sema); | |
2729 | ||
a8237fc4 | 2730 | sprintf(dbf_text,"qfqs%4x",irq_ptr->schid.sch_no); |
1da177e4 LT |
2731 | QDIO_DBF_TEXT1(0,trace,dbf_text); |
2732 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2733 | ||
2734 | cdev->private->qdio_data = 0; | |
2735 | ||
2736 | up(&irq_ptr->setting_up_sema); | |
2737 | ||
2738 | qdio_release_irq_memory(irq_ptr); | |
2739 | module_put(THIS_MODULE); | |
2740 | return 0; | |
2741 | } | |
2742 | ||
2743 | static inline void | |
2744 | qdio_allocate_do_dbf(struct qdio_initialize *init_data) | |
2745 | { | |
2746 | char dbf_text[20]; /* if a printf printed out more than 8 chars */ | |
2747 | ||
2748 | sprintf(dbf_text,"qfmt:%x",init_data->q_format); | |
2749 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2750 | QDIO_DBF_HEX0(0,setup,init_data->adapter_name,8); | |
2751 | sprintf(dbf_text,"qpff%4x",init_data->qib_param_field_format); | |
2752 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2753 | QDIO_DBF_HEX0(0,setup,&init_data->qib_param_field,sizeof(char*)); | |
2754 | QDIO_DBF_HEX0(0,setup,&init_data->input_slib_elements,sizeof(long*)); | |
2755 | QDIO_DBF_HEX0(0,setup,&init_data->output_slib_elements,sizeof(long*)); | |
2756 | sprintf(dbf_text,"miit%4x",init_data->min_input_threshold); | |
2757 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2758 | sprintf(dbf_text,"mait%4x",init_data->max_input_threshold); | |
2759 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2760 | sprintf(dbf_text,"miot%4x",init_data->min_output_threshold); | |
2761 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2762 | sprintf(dbf_text,"maot%4x",init_data->max_output_threshold); | |
2763 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2764 | sprintf(dbf_text,"niq:%4x",init_data->no_input_qs); | |
2765 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2766 | sprintf(dbf_text,"noq:%4x",init_data->no_output_qs); | |
2767 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
2768 | QDIO_DBF_HEX0(0,setup,&init_data->input_handler,sizeof(void*)); | |
2769 | QDIO_DBF_HEX0(0,setup,&init_data->output_handler,sizeof(void*)); | |
2770 | QDIO_DBF_HEX0(0,setup,&init_data->int_parm,sizeof(long)); | |
2771 | QDIO_DBF_HEX0(0,setup,&init_data->flags,sizeof(long)); | |
2772 | QDIO_DBF_HEX0(0,setup,&init_data->input_sbal_addr_array,sizeof(void*)); | |
2773 | QDIO_DBF_HEX0(0,setup,&init_data->output_sbal_addr_array,sizeof(void*)); | |
2774 | } | |
2775 | ||
2776 | static inline void | |
2777 | qdio_allocate_fill_input_desc(struct qdio_irq *irq_ptr, int i, int iqfmt) | |
2778 | { | |
2779 | irq_ptr->input_qs[i]->is_iqdio_q = iqfmt; | |
2780 | irq_ptr->input_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq; | |
2781 | ||
2782 | irq_ptr->qdr->qdf0[i].sliba=(unsigned long)(irq_ptr->input_qs[i]->slib); | |
2783 | ||
2784 | irq_ptr->qdr->qdf0[i].sla=(unsigned long)(irq_ptr->input_qs[i]->sl); | |
2785 | ||
2786 | irq_ptr->qdr->qdf0[i].slsba= | |
2787 | (unsigned long)(&irq_ptr->input_qs[i]->slsb.acc.val[0]); | |
2788 | ||
2789 | irq_ptr->qdr->qdf0[i].akey=QDIO_STORAGE_KEY; | |
2790 | irq_ptr->qdr->qdf0[i].bkey=QDIO_STORAGE_KEY; | |
2791 | irq_ptr->qdr->qdf0[i].ckey=QDIO_STORAGE_KEY; | |
2792 | irq_ptr->qdr->qdf0[i].dkey=QDIO_STORAGE_KEY; | |
2793 | } | |
2794 | ||
2795 | static inline void | |
2796 | qdio_allocate_fill_output_desc(struct qdio_irq *irq_ptr, int i, | |
2797 | int j, int iqfmt) | |
2798 | { | |
2799 | irq_ptr->output_qs[i]->is_iqdio_q = iqfmt; | |
2800 | irq_ptr->output_qs[i]->is_thinint_q = irq_ptr->is_thinint_irq; | |
2801 | ||
2802 | irq_ptr->qdr->qdf0[i+j].sliba=(unsigned long)(irq_ptr->output_qs[i]->slib); | |
2803 | ||
2804 | irq_ptr->qdr->qdf0[i+j].sla=(unsigned long)(irq_ptr->output_qs[i]->sl); | |
2805 | ||
2806 | irq_ptr->qdr->qdf0[i+j].slsba= | |
2807 | (unsigned long)(&irq_ptr->output_qs[i]->slsb.acc.val[0]); | |
2808 | ||
2809 | irq_ptr->qdr->qdf0[i+j].akey=QDIO_STORAGE_KEY; | |
2810 | irq_ptr->qdr->qdf0[i+j].bkey=QDIO_STORAGE_KEY; | |
2811 | irq_ptr->qdr->qdf0[i+j].ckey=QDIO_STORAGE_KEY; | |
2812 | irq_ptr->qdr->qdf0[i+j].dkey=QDIO_STORAGE_KEY; | |
2813 | } | |
2814 | ||
2815 | ||
2816 | static inline void | |
2817 | qdio_initialize_set_siga_flags_input(struct qdio_irq *irq_ptr) | |
2818 | { | |
2819 | int i; | |
2820 | ||
2821 | for (i=0;i<irq_ptr->no_input_qs;i++) { | |
2822 | irq_ptr->input_qs[i]->siga_sync= | |
2823 | irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY; | |
2824 | irq_ptr->input_qs[i]->siga_in= | |
2825 | irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY; | |
2826 | irq_ptr->input_qs[i]->siga_out= | |
2827 | irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY; | |
2828 | irq_ptr->input_qs[i]->siga_sync_done_on_thinints= | |
2829 | irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS; | |
2830 | irq_ptr->input_qs[i]->hydra_gives_outbound_pcis= | |
2831 | irq_ptr->hydra_gives_outbound_pcis; | |
2832 | irq_ptr->input_qs[i]->siga_sync_done_on_outb_tis= | |
2833 | ((irq_ptr->qdioac& | |
2834 | (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS| | |
2835 | CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))== | |
2836 | (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS| | |
2837 | CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS)); | |
2838 | ||
2839 | } | |
2840 | } | |
2841 | ||
2842 | static inline void | |
2843 | qdio_initialize_set_siga_flags_output(struct qdio_irq *irq_ptr) | |
2844 | { | |
2845 | int i; | |
2846 | ||
2847 | for (i=0;i<irq_ptr->no_output_qs;i++) { | |
2848 | irq_ptr->output_qs[i]->siga_sync= | |
2849 | irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY; | |
2850 | irq_ptr->output_qs[i]->siga_in= | |
2851 | irq_ptr->qdioac&CHSC_FLAG_SIGA_INPUT_NECESSARY; | |
2852 | irq_ptr->output_qs[i]->siga_out= | |
2853 | irq_ptr->qdioac&CHSC_FLAG_SIGA_OUTPUT_NECESSARY; | |
2854 | irq_ptr->output_qs[i]->siga_sync_done_on_thinints= | |
2855 | irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS; | |
2856 | irq_ptr->output_qs[i]->hydra_gives_outbound_pcis= | |
2857 | irq_ptr->hydra_gives_outbound_pcis; | |
2858 | irq_ptr->output_qs[i]->siga_sync_done_on_outb_tis= | |
2859 | ((irq_ptr->qdioac& | |
2860 | (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS| | |
2861 | CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS))== | |
2862 | (CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS| | |
2863 | CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS)); | |
2864 | ||
2865 | } | |
2866 | } | |
2867 | ||
2868 | static inline int | |
2869 | qdio_establish_irq_check_for_errors(struct ccw_device *cdev, int cstat, | |
2870 | int dstat) | |
2871 | { | |
2872 | char dbf_text[15]; | |
2873 | struct qdio_irq *irq_ptr; | |
2874 | ||
2875 | irq_ptr = cdev->private->qdio_data; | |
2876 | ||
2877 | if (cstat || (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END))) { | |
a8237fc4 | 2878 | sprintf(dbf_text,"ick1%4x",irq_ptr->schid.sch_no); |
1da177e4 LT |
2879 | QDIO_DBF_TEXT2(1,trace,dbf_text); |
2880 | QDIO_DBF_HEX2(0,trace,&dstat,sizeof(int)); | |
2881 | QDIO_DBF_HEX2(0,trace,&cstat,sizeof(int)); | |
2882 | QDIO_PRINT_ERR("received check condition on establish " \ | |
fb6958a5 CH |
2883 | "queues on irq 0.%x.%x (cs=x%x, ds=x%x).\n", |
2884 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no, | |
2885 | cstat,dstat); | |
1da177e4 LT |
2886 | qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ERR); |
2887 | } | |
2888 | ||
2889 | if (!(dstat & DEV_STAT_DEV_END)) { | |
2890 | QDIO_DBF_TEXT2(1,setup,"eq:no de"); | |
2891 | QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat)); | |
2892 | QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat)); | |
fb6958a5 | 2893 | QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: didn't get " |
1da177e4 | 2894 | "device end: dstat=%02x, cstat=%02x\n", |
fb6958a5 CH |
2895 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no, |
2896 | dstat, cstat); | |
1da177e4 LT |
2897 | qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR); |
2898 | return 1; | |
2899 | } | |
2900 | ||
2901 | if (dstat & ~(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) { | |
2902 | QDIO_DBF_TEXT2(1,setup,"eq:badio"); | |
2903 | QDIO_DBF_HEX2(0,setup,&dstat, sizeof(dstat)); | |
2904 | QDIO_DBF_HEX2(0,setup,&cstat, sizeof(cstat)); | |
fb6958a5 | 2905 | QDIO_PRINT_ERR("establish queues on irq 0.%x.%04x: got " |
1da177e4 | 2906 | "the following devstat: dstat=%02x, " |
fb6958a5 | 2907 | "cstat=%02x\n", irq_ptr->schid.ssid, |
a8237fc4 | 2908 | irq_ptr->schid.sch_no, dstat, cstat); |
1da177e4 LT |
2909 | qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR); |
2910 | return 1; | |
2911 | } | |
2912 | return 0; | |
2913 | } | |
2914 | ||
2915 | static void | |
2916 | qdio_establish_handle_irq(struct ccw_device *cdev, int cstat, int dstat) | |
2917 | { | |
2918 | struct qdio_irq *irq_ptr; | |
2919 | char dbf_text[15]; | |
2920 | ||
2921 | irq_ptr = cdev->private->qdio_data; | |
2922 | ||
a8237fc4 | 2923 | sprintf(dbf_text,"qehi%4x",cdev->private->sch_no); |
1da177e4 LT |
2924 | QDIO_DBF_TEXT0(0,setup,dbf_text); |
2925 | QDIO_DBF_TEXT0(0,trace,dbf_text); | |
2926 | ||
2927 | if (qdio_establish_irq_check_for_errors(cdev, cstat, dstat)) { | |
2928 | ccw_device_set_timeout(cdev, 0); | |
2929 | return; | |
2930 | } | |
2931 | ||
2932 | qdio_set_state(irq_ptr,QDIO_IRQ_STATE_ESTABLISHED); | |
2933 | ccw_device_set_timeout(cdev, 0); | |
2934 | } | |
2935 | ||
2936 | int | |
2937 | qdio_initialize(struct qdio_initialize *init_data) | |
2938 | { | |
2939 | int rc; | |
2940 | char dbf_text[15]; | |
2941 | ||
a8237fc4 | 2942 | sprintf(dbf_text,"qini%4x",init_data->cdev->private->sch_no); |
1da177e4 LT |
2943 | QDIO_DBF_TEXT0(0,setup,dbf_text); |
2944 | QDIO_DBF_TEXT0(0,trace,dbf_text); | |
2945 | ||
2946 | rc = qdio_allocate(init_data); | |
2947 | if (rc == 0) { | |
2948 | rc = qdio_establish(init_data); | |
2949 | if (rc != 0) | |
2950 | qdio_free(init_data->cdev); | |
2951 | } | |
2952 | ||
2953 | return rc; | |
2954 | } | |
2955 | ||
2956 | ||
2957 | int | |
2958 | qdio_allocate(struct qdio_initialize *init_data) | |
2959 | { | |
2960 | struct qdio_irq *irq_ptr; | |
2961 | char dbf_text[15]; | |
2962 | ||
a8237fc4 | 2963 | sprintf(dbf_text,"qalc%4x",init_data->cdev->private->sch_no); |
1da177e4 LT |
2964 | QDIO_DBF_TEXT0(0,setup,dbf_text); |
2965 | QDIO_DBF_TEXT0(0,trace,dbf_text); | |
2966 | if ( (init_data->no_input_qs>QDIO_MAX_QUEUES_PER_IRQ) || | |
2967 | (init_data->no_output_qs>QDIO_MAX_QUEUES_PER_IRQ) || | |
2968 | ((init_data->no_input_qs) && (!init_data->input_handler)) || | |
2969 | ((init_data->no_output_qs) && (!init_data->output_handler)) ) | |
2970 | return -EINVAL; | |
2971 | ||
2972 | if (!init_data->input_sbal_addr_array) | |
2973 | return -EINVAL; | |
2974 | ||
2975 | if (!init_data->output_sbal_addr_array) | |
2976 | return -EINVAL; | |
2977 | ||
2978 | qdio_allocate_do_dbf(init_data); | |
2979 | ||
2980 | /* create irq */ | |
2981 | irq_ptr=kmalloc(sizeof(struct qdio_irq), GFP_KERNEL | GFP_DMA); | |
2982 | ||
2983 | QDIO_DBF_TEXT0(0,setup,"irq_ptr:"); | |
2984 | QDIO_DBF_HEX0(0,setup,&irq_ptr,sizeof(void*)); | |
2985 | ||
2986 | if (!irq_ptr) { | |
2987 | QDIO_PRINT_ERR("kmalloc of irq_ptr failed!\n"); | |
2988 | return -ENOMEM; | |
2989 | } | |
2990 | ||
2991 | memset(irq_ptr,0,sizeof(struct qdio_irq)); | |
2992 | ||
2993 | init_MUTEX(&irq_ptr->setting_up_sema); | |
2994 | ||
2995 | /* QDR must be in DMA area since CCW data address is only 32 bit */ | |
2996 | irq_ptr->qdr=kmalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA); | |
2997 | if (!(irq_ptr->qdr)) { | |
2998 | kfree(irq_ptr); | |
2999 | QDIO_PRINT_ERR("kmalloc of irq_ptr->qdr failed!\n"); | |
3000 | return -ENOMEM; | |
3001 | } | |
3002 | QDIO_DBF_TEXT0(0,setup,"qdr:"); | |
3003 | QDIO_DBF_HEX0(0,setup,&irq_ptr->qdr,sizeof(void*)); | |
3004 | ||
3005 | if (qdio_alloc_qs(irq_ptr, | |
3006 | init_data->no_input_qs, | |
3007 | init_data->no_output_qs)) { | |
3008 | qdio_release_irq_memory(irq_ptr); | |
3009 | return -ENOMEM; | |
3010 | } | |
3011 | ||
3012 | init_data->cdev->private->qdio_data = irq_ptr; | |
3013 | ||
3014 | qdio_set_state(irq_ptr,QDIO_IRQ_STATE_INACTIVE); | |
3015 | ||
3016 | return 0; | |
3017 | } | |
3018 | ||
3019 | int qdio_fill_irq(struct qdio_initialize *init_data) | |
3020 | { | |
3021 | int i; | |
3022 | char dbf_text[15]; | |
3023 | struct ciw *ciw; | |
3024 | int is_iqdio; | |
3025 | struct qdio_irq *irq_ptr; | |
3026 | ||
3027 | irq_ptr = init_data->cdev->private->qdio_data; | |
3028 | ||
3029 | memset(irq_ptr,0,((char*)&irq_ptr->qdr)-((char*)irq_ptr)); | |
3030 | ||
3031 | /* wipes qib.ac, required by ar7063 */ | |
3032 | memset(irq_ptr->qdr,0,sizeof(struct qdr)); | |
3033 | ||
3034 | irq_ptr->int_parm=init_data->int_parm; | |
3035 | ||
a8237fc4 | 3036 | irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev); |
1da177e4 LT |
3037 | irq_ptr->no_input_qs=init_data->no_input_qs; |
3038 | irq_ptr->no_output_qs=init_data->no_output_qs; | |
3039 | ||
3040 | if (init_data->q_format==QDIO_IQDIO_QFMT) { | |
3041 | irq_ptr->is_iqdio_irq=1; | |
3042 | irq_ptr->is_thinint_irq=1; | |
3043 | } else { | |
3044 | irq_ptr->is_iqdio_irq=0; | |
3045 | irq_ptr->is_thinint_irq=hydra_thinints; | |
3046 | } | |
3047 | sprintf(dbf_text,"is_i_t%1x%1x", | |
3048 | irq_ptr->is_iqdio_irq,irq_ptr->is_thinint_irq); | |
3049 | QDIO_DBF_TEXT2(0,setup,dbf_text); | |
3050 | ||
3051 | if (irq_ptr->is_thinint_irq) { | |
8129ee16 | 3052 | irq_ptr->dev_st_chg_ind = qdio_get_indicator(); |
1da177e4 LT |
3053 | QDIO_DBF_HEX1(0,setup,&irq_ptr->dev_st_chg_ind,sizeof(void*)); |
3054 | if (!irq_ptr->dev_st_chg_ind) { | |
3055 | QDIO_PRINT_WARN("no indicator location available " \ | |
fb6958a5 CH |
3056 | "for irq 0.%x.%x\n", |
3057 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no); | |
1da177e4 LT |
3058 | qdio_release_irq_memory(irq_ptr); |
3059 | return -ENOBUFS; | |
3060 | } | |
3061 | } | |
3062 | ||
3063 | /* defaults */ | |
3064 | irq_ptr->equeue.cmd=DEFAULT_ESTABLISH_QS_CMD; | |
3065 | irq_ptr->equeue.count=DEFAULT_ESTABLISH_QS_COUNT; | |
3066 | irq_ptr->aqueue.cmd=DEFAULT_ACTIVATE_QS_CMD; | |
3067 | irq_ptr->aqueue.count=DEFAULT_ACTIVATE_QS_COUNT; | |
3068 | ||
3069 | qdio_fill_qs(irq_ptr, init_data->cdev, | |
3070 | init_data->no_input_qs, | |
3071 | init_data->no_output_qs, | |
3072 | init_data->input_handler, | |
3073 | init_data->output_handler,init_data->int_parm, | |
3074 | init_data->q_format,init_data->flags, | |
3075 | init_data->input_sbal_addr_array, | |
3076 | init_data->output_sbal_addr_array); | |
3077 | ||
3078 | if (!try_module_get(THIS_MODULE)) { | |
3079 | QDIO_PRINT_CRIT("try_module_get() failed!\n"); | |
3080 | qdio_release_irq_memory(irq_ptr); | |
3081 | return -EINVAL; | |
3082 | } | |
3083 | ||
3084 | qdio_fill_thresholds(irq_ptr,init_data->no_input_qs, | |
3085 | init_data->no_output_qs, | |
3086 | init_data->min_input_threshold, | |
3087 | init_data->max_input_threshold, | |
3088 | init_data->min_output_threshold, | |
3089 | init_data->max_output_threshold); | |
3090 | ||
3091 | /* fill in qdr */ | |
3092 | irq_ptr->qdr->qfmt=init_data->q_format; | |
3093 | irq_ptr->qdr->iqdcnt=init_data->no_input_qs; | |
3094 | irq_ptr->qdr->oqdcnt=init_data->no_output_qs; | |
3095 | irq_ptr->qdr->iqdsz=sizeof(struct qdesfmt0)/4; /* size in words */ | |
3096 | irq_ptr->qdr->oqdsz=sizeof(struct qdesfmt0)/4; | |
3097 | ||
3098 | irq_ptr->qdr->qiba=(unsigned long)&irq_ptr->qib; | |
3099 | irq_ptr->qdr->qkey=QDIO_STORAGE_KEY; | |
3100 | ||
3101 | /* fill in qib */ | |
8129ee16 FP |
3102 | irq_ptr->is_qebsm = is_passthrough; |
3103 | if (irq_ptr->is_qebsm) | |
3104 | irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM; | |
3105 | ||
1da177e4 LT |
3106 | irq_ptr->qib.qfmt=init_data->q_format; |
3107 | if (init_data->no_input_qs) | |
3108 | irq_ptr->qib.isliba=(unsigned long)(irq_ptr->input_qs[0]->slib); | |
3109 | if (init_data->no_output_qs) | |
3110 | irq_ptr->qib.osliba=(unsigned long)(irq_ptr->output_qs[0]->slib); | |
3111 | memcpy(irq_ptr->qib.ebcnam,init_data->adapter_name,8); | |
3112 | ||
3113 | qdio_set_impl_params(irq_ptr,init_data->qib_param_field_format, | |
3114 | init_data->qib_param_field, | |
3115 | init_data->no_input_qs, | |
3116 | init_data->no_output_qs, | |
3117 | init_data->input_slib_elements, | |
3118 | init_data->output_slib_elements); | |
3119 | ||
3120 | /* first input descriptors, then output descriptors */ | |
3121 | is_iqdio = (init_data->q_format == QDIO_IQDIO_QFMT) ? 1 : 0; | |
3122 | for (i=0;i<init_data->no_input_qs;i++) | |
3123 | qdio_allocate_fill_input_desc(irq_ptr, i, is_iqdio); | |
3124 | ||
3125 | for (i=0;i<init_data->no_output_qs;i++) | |
3126 | qdio_allocate_fill_output_desc(irq_ptr, i, | |
3127 | init_data->no_input_qs, | |
3128 | is_iqdio); | |
3129 | ||
3130 | /* qdr, qib, sls, slsbs, slibs, sbales filled. */ | |
3131 | ||
3132 | /* get qdio commands */ | |
3133 | ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE); | |
3134 | if (!ciw) { | |
3135 | QDIO_DBF_TEXT2(1,setup,"no eq"); | |
3136 | QDIO_PRINT_INFO("No equeue CIW found for QDIO commands. " | |
3137 | "Trying to use default.\n"); | |
3138 | } else | |
3139 | irq_ptr->equeue = *ciw; | |
3140 | ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE); | |
3141 | if (!ciw) { | |
3142 | QDIO_DBF_TEXT2(1,setup,"no aq"); | |
3143 | QDIO_PRINT_INFO("No aqueue CIW found for QDIO commands. " | |
3144 | "Trying to use default.\n"); | |
3145 | } else | |
3146 | irq_ptr->aqueue = *ciw; | |
3147 | ||
3148 | /* Set new interrupt handler. */ | |
3149 | irq_ptr->original_int_handler = init_data->cdev->handler; | |
3150 | init_data->cdev->handler = qdio_handler; | |
3151 | ||
3152 | return 0; | |
3153 | } | |
3154 | ||
3155 | int | |
3156 | qdio_establish(struct qdio_initialize *init_data) | |
3157 | { | |
3158 | struct qdio_irq *irq_ptr; | |
3159 | unsigned long saveflags; | |
3160 | int result, result2; | |
3161 | struct ccw_device *cdev; | |
3162 | char dbf_text[20]; | |
3163 | ||
3164 | cdev=init_data->cdev; | |
3165 | irq_ptr = cdev->private->qdio_data; | |
3166 | if (!irq_ptr) | |
3167 | return -EINVAL; | |
3168 | ||
3169 | if (cdev->private->state != DEV_STATE_ONLINE) | |
3170 | return -EINVAL; | |
3171 | ||
3172 | down(&irq_ptr->setting_up_sema); | |
3173 | ||
3174 | qdio_fill_irq(init_data); | |
3175 | ||
3176 | /* the thinint CHSC stuff */ | |
3177 | if (irq_ptr->is_thinint_irq) { | |
3178 | ||
3179 | result = tiqdio_set_subchannel_ind(irq_ptr,0); | |
3180 | if (result) { | |
3181 | up(&irq_ptr->setting_up_sema); | |
3182 | qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR); | |
3183 | return result; | |
3184 | } | |
3185 | tiqdio_set_delay_target(irq_ptr,TIQDIO_DELAY_TARGET); | |
3186 | } | |
3187 | ||
a8237fc4 | 3188 | sprintf(dbf_text,"qest%4x",cdev->private->sch_no); |
1da177e4 LT |
3189 | QDIO_DBF_TEXT0(0,setup,dbf_text); |
3190 | QDIO_DBF_TEXT0(0,trace,dbf_text); | |
3191 | ||
3192 | /* establish q */ | |
3193 | irq_ptr->ccw.cmd_code=irq_ptr->equeue.cmd; | |
3194 | irq_ptr->ccw.flags=CCW_FLAG_SLI; | |
3195 | irq_ptr->ccw.count=irq_ptr->equeue.count; | |
3196 | irq_ptr->ccw.cda=QDIO_GET_ADDR(irq_ptr->qdr); | |
3197 | ||
3198 | spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags); | |
3199 | ||
3200 | ccw_device_set_options(cdev, 0); | |
3201 | result=ccw_device_start_timeout(cdev,&irq_ptr->ccw, | |
3202 | QDIO_DOING_ESTABLISH,0, 0, | |
3203 | QDIO_ESTABLISH_TIMEOUT); | |
3204 | if (result) { | |
3205 | result2=ccw_device_start_timeout(cdev,&irq_ptr->ccw, | |
3206 | QDIO_DOING_ESTABLISH,0,0, | |
3207 | QDIO_ESTABLISH_TIMEOUT); | |
3208 | sprintf(dbf_text,"eq:io%4x",result); | |
3209 | QDIO_DBF_TEXT2(1,setup,dbf_text); | |
3210 | if (result2) { | |
3211 | sprintf(dbf_text,"eq:io%4x",result); | |
3212 | QDIO_DBF_TEXT2(1,setup,dbf_text); | |
3213 | } | |
fb6958a5 CH |
3214 | QDIO_PRINT_WARN("establish queues on irq 0.%x.%04x: do_IO " \ |
3215 | "returned %i, next try returned %i\n", | |
3216 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no, | |
3217 | result, result2); | |
1da177e4 LT |
3218 | result=result2; |
3219 | if (result) | |
3220 | ccw_device_set_timeout(cdev, 0); | |
3221 | } | |
3222 | ||
3223 | spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags); | |
3224 | ||
3225 | if (result) { | |
3226 | up(&irq_ptr->setting_up_sema); | |
3227 | qdio_shutdown(cdev,QDIO_FLAG_CLEANUP_USING_CLEAR); | |
3228 | return result; | |
3229 | } | |
3230 | ||
cdb32dc9 UBK |
3231 | /* Timeout is cared for already by using ccw_device_start_timeout(). */ |
3232 | wait_event_interruptible(cdev->private->wait_q, | |
1da177e4 | 3233 | irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED || |
cdb32dc9 | 3234 | irq_ptr->state == QDIO_IRQ_STATE_ERR); |
1da177e4 LT |
3235 | |
3236 | if (irq_ptr->state == QDIO_IRQ_STATE_ESTABLISHED) | |
3237 | result = 0; | |
3238 | else { | |
3239 | up(&irq_ptr->setting_up_sema); | |
3240 | qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR); | |
3241 | return -EIO; | |
3242 | } | |
3243 | ||
8129ee16 | 3244 | qdio_get_ssqd_information(irq_ptr); |
1da177e4 LT |
3245 | /* if this gets set once, we're running under VM and can omit SVSes */ |
3246 | if (irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_NECESSARY) | |
3247 | omit_svs=1; | |
3248 | ||
3249 | sprintf(dbf_text,"qdioac%2x",irq_ptr->qdioac); | |
3250 | QDIO_DBF_TEXT2(0,setup,dbf_text); | |
3251 | ||
3252 | sprintf(dbf_text,"qib ac%2x",irq_ptr->qib.ac); | |
3253 | QDIO_DBF_TEXT2(0,setup,dbf_text); | |
3254 | ||
3255 | irq_ptr->hydra_gives_outbound_pcis= | |
3256 | irq_ptr->qib.ac&QIB_AC_OUTBOUND_PCI_SUPPORTED; | |
3257 | irq_ptr->sync_done_on_outb_pcis= | |
3258 | irq_ptr->qdioac&CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS; | |
3259 | ||
3260 | qdio_initialize_set_siga_flags_input(irq_ptr); | |
3261 | qdio_initialize_set_siga_flags_output(irq_ptr); | |
3262 | ||
3263 | up(&irq_ptr->setting_up_sema); | |
3264 | ||
3265 | return result; | |
3266 | ||
3267 | } | |
3268 | ||
3269 | int | |
3270 | qdio_activate(struct ccw_device *cdev, int flags) | |
3271 | { | |
3272 | struct qdio_irq *irq_ptr; | |
3273 | int i,result=0,result2; | |
3274 | unsigned long saveflags; | |
3275 | char dbf_text[20]; /* see qdio_initialize */ | |
3276 | ||
3277 | irq_ptr = cdev->private->qdio_data; | |
3278 | if (!irq_ptr) | |
3279 | return -ENODEV; | |
3280 | ||
3281 | if (cdev->private->state != DEV_STATE_ONLINE) | |
3282 | return -EINVAL; | |
3283 | ||
3284 | down(&irq_ptr->setting_up_sema); | |
3285 | if (irq_ptr->state==QDIO_IRQ_STATE_INACTIVE) { | |
3286 | result=-EBUSY; | |
3287 | goto out; | |
3288 | } | |
3289 | ||
a8237fc4 | 3290 | sprintf(dbf_text,"qact%4x", irq_ptr->schid.sch_no); |
1da177e4 LT |
3291 | QDIO_DBF_TEXT2(0,setup,dbf_text); |
3292 | QDIO_DBF_TEXT2(0,trace,dbf_text); | |
3293 | ||
3294 | /* activate q */ | |
3295 | irq_ptr->ccw.cmd_code=irq_ptr->aqueue.cmd; | |
3296 | irq_ptr->ccw.flags=CCW_FLAG_SLI; | |
3297 | irq_ptr->ccw.count=irq_ptr->aqueue.count; | |
3298 | irq_ptr->ccw.cda=QDIO_GET_ADDR(0); | |
3299 | ||
3300 | spin_lock_irqsave(get_ccwdev_lock(cdev),saveflags); | |
3301 | ||
3302 | ccw_device_set_timeout(cdev, 0); | |
3303 | ccw_device_set_options(cdev, CCWDEV_REPORT_ALL); | |
3304 | result=ccw_device_start(cdev,&irq_ptr->ccw,QDIO_DOING_ACTIVATE, | |
3305 | 0, DOIO_DENY_PREFETCH); | |
3306 | if (result) { | |
3307 | result2=ccw_device_start(cdev,&irq_ptr->ccw, | |
3308 | QDIO_DOING_ACTIVATE,0,0); | |
3309 | sprintf(dbf_text,"aq:io%4x",result); | |
3310 | QDIO_DBF_TEXT2(1,setup,dbf_text); | |
3311 | if (result2) { | |
3312 | sprintf(dbf_text,"aq:io%4x",result); | |
3313 | QDIO_DBF_TEXT2(1,setup,dbf_text); | |
3314 | } | |
fb6958a5 CH |
3315 | QDIO_PRINT_WARN("activate queues on irq 0.%x.%04x: do_IO " \ |
3316 | "returned %i, next try returned %i\n", | |
3317 | irq_ptr->schid.ssid, irq_ptr->schid.sch_no, | |
3318 | result, result2); | |
1da177e4 LT |
3319 | result=result2; |
3320 | } | |
3321 | ||
3322 | spin_unlock_irqrestore(get_ccwdev_lock(cdev),saveflags); | |
3323 | if (result) | |
3324 | goto out; | |
3325 | ||
3326 | for (i=0;i<irq_ptr->no_input_qs;i++) { | |
3327 | if (irq_ptr->is_thinint_irq) { | |
3328 | /* | |
3329 | * that way we know, that, if we will get interrupted | |
3330 | * by tiqdio_inbound_processing, qdio_unmark_q will | |
3331 | * not be called | |
3332 | */ | |
3333 | qdio_reserve_q(irq_ptr->input_qs[i]); | |
3334 | qdio_mark_tiq(irq_ptr->input_qs[i]); | |
3335 | qdio_release_q(irq_ptr->input_qs[i]); | |
3336 | } | |
3337 | } | |
3338 | ||
3339 | if (flags&QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT) { | |
3340 | for (i=0;i<irq_ptr->no_input_qs;i++) { | |
3341 | irq_ptr->input_qs[i]->is_input_q|= | |
3342 | QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT; | |
3343 | } | |
3344 | } | |
3345 | ||
3346 | wait_event_interruptible_timeout(cdev->private->wait_q, | |
3347 | ((irq_ptr->state == | |
3348 | QDIO_IRQ_STATE_STOPPED) || | |
3349 | (irq_ptr->state == | |
3350 | QDIO_IRQ_STATE_ERR)), | |
3351 | QDIO_ACTIVATE_TIMEOUT); | |
3352 | ||
3353 | switch (irq_ptr->state) { | |
3354 | case QDIO_IRQ_STATE_STOPPED: | |
3355 | case QDIO_IRQ_STATE_ERR: | |
3356 | up(&irq_ptr->setting_up_sema); | |
3357 | qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR); | |
3358 | down(&irq_ptr->setting_up_sema); | |
3359 | result = -EIO; | |
3360 | break; | |
3361 | default: | |
3362 | qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ACTIVE); | |
3363 | result = 0; | |
3364 | } | |
3365 | out: | |
3366 | up(&irq_ptr->setting_up_sema); | |
3367 | ||
3368 | return result; | |
3369 | } | |
3370 | ||
3371 | /* buffers filled forwards again to make Rick happy */ | |
3372 | static inline void | |
3373 | qdio_do_qdio_fill_input(struct qdio_q *q, unsigned int qidx, | |
3374 | unsigned int count, struct qdio_buffer *buffers) | |
3375 | { | |
8129ee16 FP |
3376 | struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr; |
3377 | qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1); | |
3378 | if (irq->is_qebsm) { | |
3379 | while (count) | |
3380 | set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count); | |
3381 | return; | |
3382 | } | |
1da177e4 | 3383 | for (;;) { |
8129ee16 | 3384 | set_slsb(q, &qidx, SLSB_CU_INPUT_EMPTY, &count); |
1da177e4 LT |
3385 | count--; |
3386 | if (!count) break; | |
8129ee16 | 3387 | qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1); |
1da177e4 | 3388 | } |
1da177e4 LT |
3389 | } |
3390 | ||
3391 | static inline void | |
3392 | qdio_do_qdio_fill_output(struct qdio_q *q, unsigned int qidx, | |
3393 | unsigned int count, struct qdio_buffer *buffers) | |
3394 | { | |
8129ee16 FP |
3395 | struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr; |
3396 | ||
3397 | qidx &= (QDIO_MAX_BUFFERS_PER_Q - 1); | |
3398 | if (irq->is_qebsm) { | |
3399 | while (count) | |
3400 | set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count); | |
3401 | return; | |
3402 | } | |
3403 | ||
1da177e4 | 3404 | for (;;) { |
8129ee16 | 3405 | set_slsb(q, &qidx, SLSB_CU_OUTPUT_PRIMED, &count); |
1da177e4 LT |
3406 | count--; |
3407 | if (!count) break; | |
8129ee16 | 3408 | qidx = (qidx + 1) & (QDIO_MAX_BUFFERS_PER_Q - 1); |
1da177e4 | 3409 | } |
1da177e4 LT |
3410 | } |
3411 | ||
3412 | static inline void | |
3413 | do_qdio_handle_inbound(struct qdio_q *q, unsigned int callflags, | |
3414 | unsigned int qidx, unsigned int count, | |
3415 | struct qdio_buffer *buffers) | |
3416 | { | |
3417 | int used_elements; | |
3418 | ||
3419 | /* This is the inbound handling of queues */ | |
3420 | used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count; | |
3421 | ||
3422 | qdio_do_qdio_fill_input(q,qidx,count,buffers); | |
3423 | ||
3424 | if ((used_elements+count==QDIO_MAX_BUFFERS_PER_Q)&& | |
3425 | (callflags&QDIO_FLAG_UNDER_INTERRUPT)) | |
3426 | atomic_swap(&q->polling,0); | |
3427 | ||
3428 | if (used_elements) | |
3429 | return; | |
3430 | if (callflags&QDIO_FLAG_DONT_SIGA) | |
3431 | return; | |
3432 | if (q->siga_in) { | |
3433 | int result; | |
3434 | ||
3435 | result=qdio_siga_input(q); | |
3436 | if (result) { | |
3437 | if (q->siga_error) | |
3438 | q->error_status_flags|= | |
3439 | QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR; | |
3440 | q->error_status_flags|=QDIO_STATUS_LOOK_FOR_ERROR; | |
3441 | q->siga_error=result; | |
3442 | } | |
3443 | } | |
3444 | ||
3445 | qdio_mark_q(q); | |
3446 | } | |
3447 | ||
3448 | static inline void | |
3449 | do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags, | |
3450 | unsigned int qidx, unsigned int count, | |
3451 | struct qdio_buffer *buffers) | |
3452 | { | |
3453 | int used_elements; | |
8129ee16 FP |
3454 | unsigned int cnt, start_buf; |
3455 | unsigned char state = 0; | |
3456 | struct qdio_irq *irq = (struct qdio_irq *) q->irq_ptr; | |
1da177e4 LT |
3457 | |
3458 | /* This is the outbound handling of queues */ | |
3459 | #ifdef QDIO_PERFORMANCE_STATS | |
3460 | perf_stats.start_time_outbound=NOW; | |
3461 | #endif /* QDIO_PERFORMANCE_STATS */ | |
3462 | ||
3463 | qdio_do_qdio_fill_output(q,qidx,count,buffers); | |
3464 | ||
3465 | used_elements=atomic_add_return(count, &q->number_of_buffers_used) - count; | |
3466 | ||
3467 | if (callflags&QDIO_FLAG_DONT_SIGA) { | |
3468 | #ifdef QDIO_PERFORMANCE_STATS | |
3469 | perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound; | |
3470 | perf_stats.outbound_cnt++; | |
3471 | #endif /* QDIO_PERFORMANCE_STATS */ | |
3472 | return; | |
3473 | } | |
3474 | if (q->is_iqdio_q) { | |
3475 | /* one siga for every sbal */ | |
3476 | while (count--) | |
3477 | qdio_kick_outbound_q(q); | |
3478 | ||
3479 | __qdio_outbound_processing(q); | |
3480 | } else { | |
3481 | /* under VM, we do a SIGA sync unconditionally */ | |
3482 | SYNC_MEMORY; | |
3483 | else { | |
3484 | /* | |
3485 | * w/o shadow queues (else branch of | |
3486 | * SYNC_MEMORY :-/ ), we try to | |
3487 | * fast-requeue buffers | |
3488 | */ | |
8129ee16 FP |
3489 | if (irq->is_qebsm) { |
3490 | cnt = 1; | |
3491 | start_buf = ((qidx+QDIO_MAX_BUFFERS_PER_Q-1) & | |
3492 | (QDIO_MAX_BUFFERS_PER_Q-1)); | |
3493 | qdio_do_eqbs(q, &state, &start_buf, &cnt); | |
3494 | } else | |
3495 | state = q->slsb.acc.val[(qidx+QDIO_MAX_BUFFERS_PER_Q-1) | |
3496 | &(QDIO_MAX_BUFFERS_PER_Q-1) ]; | |
3497 | if (state != SLSB_CU_OUTPUT_PRIMED) { | |
1da177e4 LT |
3498 | qdio_kick_outbound_q(q); |
3499 | } else { | |
3500 | QDIO_DBF_TEXT3(0,trace, "fast-req"); | |
3501 | #ifdef QDIO_PERFORMANCE_STATS | |
3502 | perf_stats.fast_reqs++; | |
3503 | #endif /* QDIO_PERFORMANCE_STATS */ | |
3504 | } | |
3505 | } | |
3506 | /* | |
3507 | * only marking the q could take too long, | |
3508 | * the upper layer module could do a lot of | |
3509 | * traffic in that time | |
3510 | */ | |
3511 | __qdio_outbound_processing(q); | |
3512 | } | |
3513 | ||
3514 | #ifdef QDIO_PERFORMANCE_STATS | |
3515 | perf_stats.outbound_time+=NOW-perf_stats.start_time_outbound; | |
3516 | perf_stats.outbound_cnt++; | |
3517 | #endif /* QDIO_PERFORMANCE_STATS */ | |
3518 | } | |
3519 | ||
3520 | /* count must be 1 in iqdio */ | |
3521 | int | |
3522 | do_QDIO(struct ccw_device *cdev,unsigned int callflags, | |
3523 | unsigned int queue_number, unsigned int qidx, | |
3524 | unsigned int count,struct qdio_buffer *buffers) | |
3525 | { | |
3526 | struct qdio_irq *irq_ptr; | |
3527 | #ifdef CONFIG_QDIO_DEBUG | |
3528 | char dbf_text[20]; | |
3529 | ||
a8237fc4 | 3530 | sprintf(dbf_text,"doQD%04x",cdev->private->sch_no); |
1da177e4 LT |
3531 | QDIO_DBF_TEXT3(0,trace,dbf_text); |
3532 | #endif /* CONFIG_QDIO_DEBUG */ | |
3533 | ||
3534 | if ( (qidx>QDIO_MAX_BUFFERS_PER_Q) || | |
3535 | (count>QDIO_MAX_BUFFERS_PER_Q) || | |
3536 | (queue_number>QDIO_MAX_QUEUES_PER_IRQ) ) | |
3537 | return -EINVAL; | |
3538 | ||
3539 | if (count==0) | |
3540 | return 0; | |
3541 | ||
3542 | irq_ptr = cdev->private->qdio_data; | |
3543 | if (!irq_ptr) | |
3544 | return -ENODEV; | |
3545 | ||
3546 | #ifdef CONFIG_QDIO_DEBUG | |
3547 | if (callflags&QDIO_FLAG_SYNC_INPUT) | |
3548 | QDIO_DBF_HEX3(0,trace,&irq_ptr->input_qs[queue_number], | |
3549 | sizeof(void*)); | |
3550 | else | |
3551 | QDIO_DBF_HEX3(0,trace,&irq_ptr->output_qs[queue_number], | |
3552 | sizeof(void*)); | |
3553 | sprintf(dbf_text,"flag%04x",callflags); | |
3554 | QDIO_DBF_TEXT3(0,trace,dbf_text); | |
3555 | sprintf(dbf_text,"qi%02xct%02x",qidx,count); | |
3556 | QDIO_DBF_TEXT3(0,trace,dbf_text); | |
3557 | #endif /* CONFIG_QDIO_DEBUG */ | |
3558 | ||
3559 | if (irq_ptr->state!=QDIO_IRQ_STATE_ACTIVE) | |
3560 | return -EBUSY; | |
3561 | ||
3562 | if (callflags&QDIO_FLAG_SYNC_INPUT) | |
3563 | do_qdio_handle_inbound(irq_ptr->input_qs[queue_number], | |
3564 | callflags, qidx, count, buffers); | |
3565 | else if (callflags&QDIO_FLAG_SYNC_OUTPUT) | |
3566 | do_qdio_handle_outbound(irq_ptr->output_qs[queue_number], | |
3567 | callflags, qidx, count, buffers); | |
3568 | else { | |
3569 | QDIO_DBF_TEXT3(1,trace,"doQD:inv"); | |
3570 | return -EINVAL; | |
3571 | } | |
3572 | return 0; | |
3573 | } | |
3574 | ||
3575 | #ifdef QDIO_PERFORMANCE_STATS | |
3576 | static int | |
3577 | qdio_perf_procfile_read(char *buffer, char **buffer_location, off_t offset, | |
3578 | int buffer_length, int *eof, void *data) | |
3579 | { | |
3580 | int c=0; | |
3581 | ||
3582 | /* we are always called with buffer_length=4k, so we all | |
3583 | deliver on the first read */ | |
3584 | if (offset>0) | |
3585 | return 0; | |
3586 | ||
3587 | #define _OUTP_IT(x...) c+=sprintf(buffer+c,x) | |
3588 | _OUTP_IT("i_p_nc/c=%lu/%lu\n",i_p_nc,i_p_c); | |
3589 | _OUTP_IT("ii_p_nc/c=%lu/%lu\n",ii_p_nc,ii_p_c); | |
3590 | _OUTP_IT("o_p_nc/c=%lu/%lu\n",o_p_nc,o_p_c); | |
3591 | _OUTP_IT("Number of tasklet runs (total) : %u\n", | |
3592 | perf_stats.tl_runs); | |
3593 | _OUTP_IT("\n"); | |
3594 | _OUTP_IT("Number of SIGA sync's issued : %u\n", | |
3595 | perf_stats.siga_syncs); | |
3596 | _OUTP_IT("Number of SIGA in's issued : %u\n", | |
3597 | perf_stats.siga_ins); | |
3598 | _OUTP_IT("Number of SIGA out's issued : %u\n", | |
3599 | perf_stats.siga_outs); | |
3600 | _OUTP_IT("Number of PCIs caught : %u\n", | |
3601 | perf_stats.pcis); | |
3602 | _OUTP_IT("Number of adapter interrupts caught : %u\n", | |
3603 | perf_stats.thinints); | |
3604 | _OUTP_IT("Number of fast requeues (outg. SBALs w/o SIGA) : %u\n", | |
3605 | perf_stats.fast_reqs); | |
3606 | _OUTP_IT("\n"); | |
3607 | _OUTP_IT("Total time of all inbound actions (us) incl. UL : %u\n", | |
3608 | perf_stats.inbound_time); | |
3609 | _OUTP_IT("Number of inbound transfers : %u\n", | |
3610 | perf_stats.inbound_cnt); | |
3611 | _OUTP_IT("Total time of all outbound do_QDIOs (us) : %u\n", | |
3612 | perf_stats.outbound_time); | |
3613 | _OUTP_IT("Number of do_QDIOs outbound : %u\n", | |
3614 | perf_stats.outbound_cnt); | |
3615 | _OUTP_IT("\n"); | |
3616 | ||
3617 | return c; | |
3618 | } | |
3619 | ||
3620 | static struct proc_dir_entry *qdio_perf_proc_file; | |
3621 | #endif /* QDIO_PERFORMANCE_STATS */ | |
3622 | ||
3623 | static void | |
3624 | qdio_add_procfs_entry(void) | |
3625 | { | |
3626 | #ifdef QDIO_PERFORMANCE_STATS | |
3627 | proc_perf_file_registration=0; | |
3628 | qdio_perf_proc_file=create_proc_entry(QDIO_PERF, | |
3629 | S_IFREG|0444,&proc_root); | |
3630 | if (qdio_perf_proc_file) { | |
3631 | qdio_perf_proc_file->read_proc=&qdio_perf_procfile_read; | |
3632 | } else proc_perf_file_registration=-1; | |
3633 | ||
3634 | if (proc_perf_file_registration) | |
3635 | QDIO_PRINT_WARN("was not able to register perf. " \ | |
3636 | "proc-file (%i).\n", | |
3637 | proc_perf_file_registration); | |
3638 | #endif /* QDIO_PERFORMANCE_STATS */ | |
3639 | } | |
3640 | ||
3641 | static void | |
3642 | qdio_remove_procfs_entry(void) | |
3643 | { | |
3644 | #ifdef QDIO_PERFORMANCE_STATS | |
3645 | perf_stats.tl_runs=0; | |
3646 | ||
3647 | if (!proc_perf_file_registration) /* means if it went ok earlier */ | |
3648 | remove_proc_entry(QDIO_PERF,&proc_root); | |
3649 | #endif /* QDIO_PERFORMANCE_STATS */ | |
3650 | } | |
3651 | ||
3652 | static void | |
3653 | tiqdio_register_thinints(void) | |
3654 | { | |
3655 | char dbf_text[20]; | |
3656 | register_thinint_result= | |
3657 | s390_register_adapter_interrupt(&tiqdio_thinint_handler); | |
3658 | if (register_thinint_result) { | |
3659 | sprintf(dbf_text,"regthn%x",(register_thinint_result&0xff)); | |
3660 | QDIO_DBF_TEXT0(0,setup,dbf_text); | |
3661 | QDIO_PRINT_ERR("failed to register adapter handler " \ | |
3662 | "(rc=%i).\nAdapter interrupts might " \ | |
3663 | "not work. Continuing.\n", | |
3664 | register_thinint_result); | |
3665 | } | |
3666 | } | |
3667 | ||
3668 | static void | |
3669 | tiqdio_unregister_thinints(void) | |
3670 | { | |
3671 | if (!register_thinint_result) | |
3672 | s390_unregister_adapter_interrupt(&tiqdio_thinint_handler); | |
3673 | } | |
3674 | ||
3675 | static int | |
3676 | qdio_get_qdio_memory(void) | |
3677 | { | |
3678 | int i; | |
3679 | indicator_used[0]=1; | |
3680 | ||
3681 | for (i=1;i<INDICATORS_PER_CACHELINE;i++) | |
3682 | indicator_used[i]=0; | |
3683 | indicators=(__u32*)kmalloc(sizeof(__u32)*(INDICATORS_PER_CACHELINE), | |
3684 | GFP_KERNEL); | |
3685 | if (!indicators) return -ENOMEM; | |
3686 | memset(indicators,0,sizeof(__u32)*(INDICATORS_PER_CACHELINE)); | |
3687 | return 0; | |
3688 | } | |
3689 | ||
3690 | static void | |
3691 | qdio_release_qdio_memory(void) | |
3692 | { | |
17fd682e | 3693 | kfree(indicators); |
1da177e4 LT |
3694 | } |
3695 | ||
3696 | static void | |
3697 | qdio_unregister_dbf_views(void) | |
3698 | { | |
3699 | if (qdio_dbf_setup) | |
3700 | debug_unregister(qdio_dbf_setup); | |
3701 | if (qdio_dbf_sbal) | |
3702 | debug_unregister(qdio_dbf_sbal); | |
3703 | if (qdio_dbf_sense) | |
3704 | debug_unregister(qdio_dbf_sense); | |
3705 | if (qdio_dbf_trace) | |
3706 | debug_unregister(qdio_dbf_trace); | |
3707 | #ifdef CONFIG_QDIO_DEBUG | |
3708 | if (qdio_dbf_slsb_out) | |
3709 | debug_unregister(qdio_dbf_slsb_out); | |
3710 | if (qdio_dbf_slsb_in) | |
3711 | debug_unregister(qdio_dbf_slsb_in); | |
3712 | #endif /* CONFIG_QDIO_DEBUG */ | |
3713 | } | |
3714 | ||
3715 | static int | |
3716 | qdio_register_dbf_views(void) | |
3717 | { | |
3718 | qdio_dbf_setup=debug_register(QDIO_DBF_SETUP_NAME, | |
66a464db | 3719 | QDIO_DBF_SETUP_PAGES, |
1da177e4 LT |
3720 | QDIO_DBF_SETUP_NR_AREAS, |
3721 | QDIO_DBF_SETUP_LEN); | |
3722 | if (!qdio_dbf_setup) | |
3723 | goto oom; | |
3724 | debug_register_view(qdio_dbf_setup,&debug_hex_ascii_view); | |
3725 | debug_set_level(qdio_dbf_setup,QDIO_DBF_SETUP_LEVEL); | |
3726 | ||
3727 | qdio_dbf_sbal=debug_register(QDIO_DBF_SBAL_NAME, | |
66a464db | 3728 | QDIO_DBF_SBAL_PAGES, |
1da177e4 LT |
3729 | QDIO_DBF_SBAL_NR_AREAS, |
3730 | QDIO_DBF_SBAL_LEN); | |
3731 | if (!qdio_dbf_sbal) | |
3732 | goto oom; | |
3733 | ||
3734 | debug_register_view(qdio_dbf_sbal,&debug_hex_ascii_view); | |
3735 | debug_set_level(qdio_dbf_sbal,QDIO_DBF_SBAL_LEVEL); | |
3736 | ||
3737 | qdio_dbf_sense=debug_register(QDIO_DBF_SENSE_NAME, | |
66a464db | 3738 | QDIO_DBF_SENSE_PAGES, |
1da177e4 LT |
3739 | QDIO_DBF_SENSE_NR_AREAS, |
3740 | QDIO_DBF_SENSE_LEN); | |
3741 | if (!qdio_dbf_sense) | |
3742 | goto oom; | |
3743 | ||
3744 | debug_register_view(qdio_dbf_sense,&debug_hex_ascii_view); | |
3745 | debug_set_level(qdio_dbf_sense,QDIO_DBF_SENSE_LEVEL); | |
3746 | ||
3747 | qdio_dbf_trace=debug_register(QDIO_DBF_TRACE_NAME, | |
66a464db | 3748 | QDIO_DBF_TRACE_PAGES, |
1da177e4 LT |
3749 | QDIO_DBF_TRACE_NR_AREAS, |
3750 | QDIO_DBF_TRACE_LEN); | |
3751 | if (!qdio_dbf_trace) | |
3752 | goto oom; | |
3753 | ||
3754 | debug_register_view(qdio_dbf_trace,&debug_hex_ascii_view); | |
3755 | debug_set_level(qdio_dbf_trace,QDIO_DBF_TRACE_LEVEL); | |
3756 | ||
3757 | #ifdef CONFIG_QDIO_DEBUG | |
3758 | qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME, | |
66a464db | 3759 | QDIO_DBF_SLSB_OUT_PAGES, |
1da177e4 LT |
3760 | QDIO_DBF_SLSB_OUT_NR_AREAS, |
3761 | QDIO_DBF_SLSB_OUT_LEN); | |
3762 | if (!qdio_dbf_slsb_out) | |
3763 | goto oom; | |
3764 | debug_register_view(qdio_dbf_slsb_out,&debug_hex_ascii_view); | |
3765 | debug_set_level(qdio_dbf_slsb_out,QDIO_DBF_SLSB_OUT_LEVEL); | |
3766 | ||
3767 | qdio_dbf_slsb_in=debug_register(QDIO_DBF_SLSB_IN_NAME, | |
66a464db | 3768 | QDIO_DBF_SLSB_IN_PAGES, |
1da177e4 LT |
3769 | QDIO_DBF_SLSB_IN_NR_AREAS, |
3770 | QDIO_DBF_SLSB_IN_LEN); | |
3771 | if (!qdio_dbf_slsb_in) | |
3772 | goto oom; | |
3773 | debug_register_view(qdio_dbf_slsb_in,&debug_hex_ascii_view); | |
3774 | debug_set_level(qdio_dbf_slsb_in,QDIO_DBF_SLSB_IN_LEVEL); | |
3775 | #endif /* CONFIG_QDIO_DEBUG */ | |
3776 | return 0; | |
3777 | oom: | |
3778 | QDIO_PRINT_ERR("not enough memory for dbf.\n"); | |
3779 | qdio_unregister_dbf_views(); | |
3780 | return -ENOMEM; | |
3781 | } | |
3782 | ||
3783 | static int __init | |
3784 | init_QDIO(void) | |
3785 | { | |
3786 | int res; | |
3787 | #ifdef QDIO_PERFORMANCE_STATS | |
3788 | void *ptr; | |
3789 | #endif /* QDIO_PERFORMANCE_STATS */ | |
3790 | ||
3791 | printk("qdio: loading %s\n",version); | |
3792 | ||
3793 | res=qdio_get_qdio_memory(); | |
3794 | if (res) | |
3795 | return res; | |
3796 | ||
3797 | res = qdio_register_dbf_views(); | |
3798 | if (res) | |
3799 | return res; | |
3800 | ||
3801 | QDIO_DBF_TEXT0(0,setup,"initQDIO"); | |
3802 | ||
3803 | #ifdef QDIO_PERFORMANCE_STATS | |
3804 | memset((void*)&perf_stats,0,sizeof(perf_stats)); | |
3805 | QDIO_DBF_TEXT0(0,setup,"perfstat"); | |
3806 | ptr=&perf_stats; | |
3807 | QDIO_DBF_HEX0(0,setup,&ptr,sizeof(void*)); | |
3808 | #endif /* QDIO_PERFORMANCE_STATS */ | |
3809 | ||
3810 | qdio_add_procfs_entry(); | |
3811 | ||
3812 | if (tiqdio_check_chsc_availability()) | |
3813 | QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n"); | |
3814 | ||
3815 | tiqdio_register_thinints(); | |
3816 | ||
3817 | return 0; | |
3818 | } | |
3819 | ||
3820 | static void __exit | |
3821 | cleanup_QDIO(void) | |
3822 | { | |
3823 | tiqdio_unregister_thinints(); | |
3824 | qdio_remove_procfs_entry(); | |
3825 | qdio_release_qdio_memory(); | |
3826 | qdio_unregister_dbf_views(); | |
3827 | ||
3828 | printk("qdio: %s: module removed\n",version); | |
3829 | } | |
3830 | ||
3831 | module_init(init_QDIO); | |
3832 | module_exit(cleanup_QDIO); | |
3833 | ||
3834 | EXPORT_SYMBOL(qdio_allocate); | |
3835 | EXPORT_SYMBOL(qdio_establish); | |
3836 | EXPORT_SYMBOL(qdio_initialize); | |
3837 | EXPORT_SYMBOL(qdio_activate); | |
3838 | EXPORT_SYMBOL(do_QDIO); | |
3839 | EXPORT_SYMBOL(qdio_shutdown); | |
3840 | EXPORT_SYMBOL(qdio_free); | |
3841 | EXPORT_SYMBOL(qdio_cleanup); | |
3842 | EXPORT_SYMBOL(qdio_synchronize); |