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[mirror_ubuntu-bionic-kernel.git] / drivers / s390 / net / qeth_core_main.c
1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/ip.h>
18 #include <linux/tcp.h>
19 #include <linux/mii.h>
20 #include <linux/kthread.h>
21 #include <linux/slab.h>
22 #include <net/iucv/af_iucv.h>
23 #include <net/dsfield.h>
24
25 #include <asm/ebcdic.h>
26 #include <asm/chpid.h>
27 #include <asm/io.h>
28 #include <asm/sysinfo.h>
29 #include <asm/compat.h>
30
31 #include "qeth_core.h"
32
33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
34 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
35 /* N P A M L V H */
36 [QETH_DBF_SETUP] = {"qeth_setup",
37 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
38 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
39 &debug_sprintf_view, NULL},
40 [QETH_DBF_CTRL] = {"qeth_control",
41 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
42 };
43 EXPORT_SYMBOL_GPL(qeth_dbf);
44
45 struct qeth_card_list_struct qeth_core_card_list;
46 EXPORT_SYMBOL_GPL(qeth_core_card_list);
47 struct kmem_cache *qeth_core_header_cache;
48 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
49 static struct kmem_cache *qeth_qdio_outbuf_cache;
50
51 static struct device *qeth_core_root_dev;
52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
53 static struct lock_class_key qdio_out_skb_queue_key;
54 static struct mutex qeth_mod_mutex;
55
56 static void qeth_send_control_data_cb(struct qeth_channel *,
57 struct qeth_cmd_buffer *);
58 static int qeth_issue_next_read(struct qeth_card *);
59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
61 static void qeth_free_buffer_pool(struct qeth_card *);
62 static int qeth_qdio_establish(struct qeth_card *);
63 static void qeth_free_qdio_buffers(struct qeth_card *);
64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
65 struct qeth_qdio_out_buffer *buf,
66 enum iucv_tx_notify notification);
67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
69 struct qeth_qdio_out_buffer *buf,
70 enum qeth_qdio_buffer_states newbufstate);
71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
72
73 struct workqueue_struct *qeth_wq;
74 EXPORT_SYMBOL_GPL(qeth_wq);
75
76 int qeth_card_hw_is_reachable(struct qeth_card *card)
77 {
78 return (card->state == CARD_STATE_SOFTSETUP) ||
79 (card->state == CARD_STATE_UP);
80 }
81 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
82
83 static void qeth_close_dev_handler(struct work_struct *work)
84 {
85 struct qeth_card *card;
86
87 card = container_of(work, struct qeth_card, close_dev_work);
88 QETH_CARD_TEXT(card, 2, "cldevhdl");
89 rtnl_lock();
90 dev_close(card->dev);
91 rtnl_unlock();
92 ccwgroup_set_offline(card->gdev);
93 }
94
95 void qeth_close_dev(struct qeth_card *card)
96 {
97 QETH_CARD_TEXT(card, 2, "cldevsubm");
98 queue_work(qeth_wq, &card->close_dev_work);
99 }
100 EXPORT_SYMBOL_GPL(qeth_close_dev);
101
102 static inline const char *qeth_get_cardname(struct qeth_card *card)
103 {
104 if (card->info.guestlan) {
105 switch (card->info.type) {
106 case QETH_CARD_TYPE_OSD:
107 return " Virtual NIC QDIO";
108 case QETH_CARD_TYPE_IQD:
109 return " Virtual NIC Hiper";
110 case QETH_CARD_TYPE_OSM:
111 return " Virtual NIC QDIO - OSM";
112 case QETH_CARD_TYPE_OSX:
113 return " Virtual NIC QDIO - OSX";
114 default:
115 return " unknown";
116 }
117 } else {
118 switch (card->info.type) {
119 case QETH_CARD_TYPE_OSD:
120 return " OSD Express";
121 case QETH_CARD_TYPE_IQD:
122 return " HiperSockets";
123 case QETH_CARD_TYPE_OSN:
124 return " OSN QDIO";
125 case QETH_CARD_TYPE_OSM:
126 return " OSM QDIO";
127 case QETH_CARD_TYPE_OSX:
128 return " OSX QDIO";
129 default:
130 return " unknown";
131 }
132 }
133 return " n/a";
134 }
135
136 /* max length to be returned: 14 */
137 const char *qeth_get_cardname_short(struct qeth_card *card)
138 {
139 if (card->info.guestlan) {
140 switch (card->info.type) {
141 case QETH_CARD_TYPE_OSD:
142 return "Virt.NIC QDIO";
143 case QETH_CARD_TYPE_IQD:
144 return "Virt.NIC Hiper";
145 case QETH_CARD_TYPE_OSM:
146 return "Virt.NIC OSM";
147 case QETH_CARD_TYPE_OSX:
148 return "Virt.NIC OSX";
149 default:
150 return "unknown";
151 }
152 } else {
153 switch (card->info.type) {
154 case QETH_CARD_TYPE_OSD:
155 switch (card->info.link_type) {
156 case QETH_LINK_TYPE_FAST_ETH:
157 return "OSD_100";
158 case QETH_LINK_TYPE_HSTR:
159 return "HSTR";
160 case QETH_LINK_TYPE_GBIT_ETH:
161 return "OSD_1000";
162 case QETH_LINK_TYPE_10GBIT_ETH:
163 return "OSD_10GIG";
164 case QETH_LINK_TYPE_LANE_ETH100:
165 return "OSD_FE_LANE";
166 case QETH_LINK_TYPE_LANE_TR:
167 return "OSD_TR_LANE";
168 case QETH_LINK_TYPE_LANE_ETH1000:
169 return "OSD_GbE_LANE";
170 case QETH_LINK_TYPE_LANE:
171 return "OSD_ATM_LANE";
172 default:
173 return "OSD_Express";
174 }
175 case QETH_CARD_TYPE_IQD:
176 return "HiperSockets";
177 case QETH_CARD_TYPE_OSN:
178 return "OSN";
179 case QETH_CARD_TYPE_OSM:
180 return "OSM_1000";
181 case QETH_CARD_TYPE_OSX:
182 return "OSX_10GIG";
183 default:
184 return "unknown";
185 }
186 }
187 return "n/a";
188 }
189
190 void qeth_set_recovery_task(struct qeth_card *card)
191 {
192 card->recovery_task = current;
193 }
194 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
195
196 void qeth_clear_recovery_task(struct qeth_card *card)
197 {
198 card->recovery_task = NULL;
199 }
200 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
201
202 static bool qeth_is_recovery_task(const struct qeth_card *card)
203 {
204 return card->recovery_task == current;
205 }
206
207 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
208 int clear_start_mask)
209 {
210 unsigned long flags;
211
212 spin_lock_irqsave(&card->thread_mask_lock, flags);
213 card->thread_allowed_mask = threads;
214 if (clear_start_mask)
215 card->thread_start_mask &= threads;
216 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
217 wake_up(&card->wait_q);
218 }
219 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
220
221 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
222 {
223 unsigned long flags;
224 int rc = 0;
225
226 spin_lock_irqsave(&card->thread_mask_lock, flags);
227 rc = (card->thread_running_mask & threads);
228 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
229 return rc;
230 }
231 EXPORT_SYMBOL_GPL(qeth_threads_running);
232
233 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
234 {
235 if (qeth_is_recovery_task(card))
236 return 0;
237 return wait_event_interruptible(card->wait_q,
238 qeth_threads_running(card, threads) == 0);
239 }
240 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
241
242 void qeth_clear_working_pool_list(struct qeth_card *card)
243 {
244 struct qeth_buffer_pool_entry *pool_entry, *tmp;
245
246 QETH_CARD_TEXT(card, 5, "clwrklst");
247 list_for_each_entry_safe(pool_entry, tmp,
248 &card->qdio.in_buf_pool.entry_list, list){
249 list_del(&pool_entry->list);
250 }
251 }
252 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
253
254 static int qeth_alloc_buffer_pool(struct qeth_card *card)
255 {
256 struct qeth_buffer_pool_entry *pool_entry;
257 void *ptr;
258 int i, j;
259
260 QETH_CARD_TEXT(card, 5, "alocpool");
261 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
262 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
263 if (!pool_entry) {
264 qeth_free_buffer_pool(card);
265 return -ENOMEM;
266 }
267 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
268 ptr = (void *) __get_free_page(GFP_KERNEL);
269 if (!ptr) {
270 while (j > 0)
271 free_page((unsigned long)
272 pool_entry->elements[--j]);
273 kfree(pool_entry);
274 qeth_free_buffer_pool(card);
275 return -ENOMEM;
276 }
277 pool_entry->elements[j] = ptr;
278 }
279 list_add(&pool_entry->init_list,
280 &card->qdio.init_pool.entry_list);
281 }
282 return 0;
283 }
284
285 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
286 {
287 QETH_CARD_TEXT(card, 2, "realcbp");
288
289 if ((card->state != CARD_STATE_DOWN) &&
290 (card->state != CARD_STATE_RECOVER))
291 return -EPERM;
292
293 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
294 qeth_clear_working_pool_list(card);
295 qeth_free_buffer_pool(card);
296 card->qdio.in_buf_pool.buf_count = bufcnt;
297 card->qdio.init_pool.buf_count = bufcnt;
298 return qeth_alloc_buffer_pool(card);
299 }
300 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
301
302 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
303 {
304 if (!q)
305 return;
306
307 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
308 kfree(q);
309 }
310
311 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
312 {
313 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
314 int i;
315
316 if (!q)
317 return NULL;
318
319 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
320 kfree(q);
321 return NULL;
322 }
323
324 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
325 q->bufs[i].buffer = q->qdio_bufs[i];
326
327 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
328 return q;
329 }
330
331 static inline int qeth_cq_init(struct qeth_card *card)
332 {
333 int rc;
334
335 if (card->options.cq == QETH_CQ_ENABLED) {
336 QETH_DBF_TEXT(SETUP, 2, "cqinit");
337 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
338 QDIO_MAX_BUFFERS_PER_Q);
339 card->qdio.c_q->next_buf_to_init = 127;
340 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
341 card->qdio.no_in_queues - 1, 0,
342 127);
343 if (rc) {
344 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
345 goto out;
346 }
347 }
348 rc = 0;
349 out:
350 return rc;
351 }
352
353 static inline int qeth_alloc_cq(struct qeth_card *card)
354 {
355 int rc;
356
357 if (card->options.cq == QETH_CQ_ENABLED) {
358 int i;
359 struct qdio_outbuf_state *outbuf_states;
360
361 QETH_DBF_TEXT(SETUP, 2, "cqon");
362 card->qdio.c_q = qeth_alloc_qdio_queue();
363 if (!card->qdio.c_q) {
364 rc = -1;
365 goto kmsg_out;
366 }
367 card->qdio.no_in_queues = 2;
368 card->qdio.out_bufstates =
369 kzalloc(card->qdio.no_out_queues *
370 QDIO_MAX_BUFFERS_PER_Q *
371 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
372 outbuf_states = card->qdio.out_bufstates;
373 if (outbuf_states == NULL) {
374 rc = -1;
375 goto free_cq_out;
376 }
377 for (i = 0; i < card->qdio.no_out_queues; ++i) {
378 card->qdio.out_qs[i]->bufstates = outbuf_states;
379 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
380 }
381 } else {
382 QETH_DBF_TEXT(SETUP, 2, "nocq");
383 card->qdio.c_q = NULL;
384 card->qdio.no_in_queues = 1;
385 }
386 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
387 rc = 0;
388 out:
389 return rc;
390 free_cq_out:
391 qeth_free_qdio_queue(card->qdio.c_q);
392 card->qdio.c_q = NULL;
393 kmsg_out:
394 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
395 goto out;
396 }
397
398 static inline void qeth_free_cq(struct qeth_card *card)
399 {
400 if (card->qdio.c_q) {
401 --card->qdio.no_in_queues;
402 qeth_free_qdio_queue(card->qdio.c_q);
403 card->qdio.c_q = NULL;
404 }
405 kfree(card->qdio.out_bufstates);
406 card->qdio.out_bufstates = NULL;
407 }
408
409 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
410 int delayed) {
411 enum iucv_tx_notify n;
412
413 switch (sbalf15) {
414 case 0:
415 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
416 break;
417 case 4:
418 case 16:
419 case 17:
420 case 18:
421 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
422 TX_NOTIFY_UNREACHABLE;
423 break;
424 default:
425 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
426 TX_NOTIFY_GENERALERROR;
427 break;
428 }
429
430 return n;
431 }
432
433 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
434 int bidx, int forced_cleanup)
435 {
436 if (q->card->options.cq != QETH_CQ_ENABLED)
437 return;
438
439 if (q->bufs[bidx]->next_pending != NULL) {
440 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
441 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
442
443 while (c) {
444 if (forced_cleanup ||
445 atomic_read(&c->state) ==
446 QETH_QDIO_BUF_HANDLED_DELAYED) {
447 struct qeth_qdio_out_buffer *f = c;
448 QETH_CARD_TEXT(f->q->card, 5, "fp");
449 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
450 /* release here to avoid interleaving between
451 outbound tasklet and inbound tasklet
452 regarding notifications and lifecycle */
453 qeth_release_skbs(c);
454
455 c = f->next_pending;
456 WARN_ON_ONCE(head->next_pending != f);
457 head->next_pending = c;
458 kmem_cache_free(qeth_qdio_outbuf_cache, f);
459 } else {
460 head = c;
461 c = c->next_pending;
462 }
463
464 }
465 }
466 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
467 QETH_QDIO_BUF_HANDLED_DELAYED)) {
468 /* for recovery situations */
469 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
470 qeth_init_qdio_out_buf(q, bidx);
471 QETH_CARD_TEXT(q->card, 2, "clprecov");
472 }
473 }
474
475
476 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
477 unsigned long phys_aob_addr) {
478 struct qaob *aob;
479 struct qeth_qdio_out_buffer *buffer;
480 enum iucv_tx_notify notification;
481
482 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
483 QETH_CARD_TEXT(card, 5, "haob");
484 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
485 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
486 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
487
488 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
489 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
490 notification = TX_NOTIFY_OK;
491 } else {
492 WARN_ON_ONCE(atomic_read(&buffer->state) !=
493 QETH_QDIO_BUF_PENDING);
494 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
495 notification = TX_NOTIFY_DELAYED_OK;
496 }
497
498 if (aob->aorc != 0) {
499 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
500 notification = qeth_compute_cq_notification(aob->aorc, 1);
501 }
502 qeth_notify_skbs(buffer->q, buffer, notification);
503
504 buffer->aob = NULL;
505 qeth_clear_output_buffer(buffer->q, buffer,
506 QETH_QDIO_BUF_HANDLED_DELAYED);
507
508 /* from here on: do not touch buffer anymore */
509 qdio_release_aob(aob);
510 }
511
512 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
513 {
514 return card->options.cq == QETH_CQ_ENABLED &&
515 card->qdio.c_q != NULL &&
516 queue != 0 &&
517 queue == card->qdio.no_in_queues - 1;
518 }
519
520
521 static int qeth_issue_next_read(struct qeth_card *card)
522 {
523 int rc;
524 struct qeth_cmd_buffer *iob;
525
526 QETH_CARD_TEXT(card, 5, "issnxrd");
527 if (card->read.state != CH_STATE_UP)
528 return -EIO;
529 iob = qeth_get_buffer(&card->read);
530 if (!iob) {
531 dev_warn(&card->gdev->dev, "The qeth device driver "
532 "failed to recover an error on the device\n");
533 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
534 "available\n", dev_name(&card->gdev->dev));
535 return -ENOMEM;
536 }
537 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
538 QETH_CARD_TEXT(card, 6, "noirqpnd");
539 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
540 (addr_t) iob, 0, 0);
541 if (rc) {
542 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
543 "rc=%i\n", dev_name(&card->gdev->dev), rc);
544 atomic_set(&card->read.irq_pending, 0);
545 card->read_or_write_problem = 1;
546 qeth_schedule_recovery(card);
547 wake_up(&card->wait_q);
548 }
549 return rc;
550 }
551
552 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
553 {
554 struct qeth_reply *reply;
555
556 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
557 if (reply) {
558 atomic_set(&reply->refcnt, 1);
559 atomic_set(&reply->received, 0);
560 reply->card = card;
561 }
562 return reply;
563 }
564
565 static void qeth_get_reply(struct qeth_reply *reply)
566 {
567 WARN_ON(atomic_read(&reply->refcnt) <= 0);
568 atomic_inc(&reply->refcnt);
569 }
570
571 static void qeth_put_reply(struct qeth_reply *reply)
572 {
573 WARN_ON(atomic_read(&reply->refcnt) <= 0);
574 if (atomic_dec_and_test(&reply->refcnt))
575 kfree(reply);
576 }
577
578 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
579 struct qeth_card *card)
580 {
581 char *ipa_name;
582 int com = cmd->hdr.command;
583 ipa_name = qeth_get_ipa_cmd_name(com);
584 if (rc)
585 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
586 "x%X \"%s\"\n",
587 ipa_name, com, dev_name(&card->gdev->dev),
588 QETH_CARD_IFNAME(card), rc,
589 qeth_get_ipa_msg(rc));
590 else
591 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
592 ipa_name, com, dev_name(&card->gdev->dev),
593 QETH_CARD_IFNAME(card));
594 }
595
596 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
597 struct qeth_cmd_buffer *iob)
598 {
599 struct qeth_ipa_cmd *cmd = NULL;
600
601 QETH_CARD_TEXT(card, 5, "chkipad");
602 if (IS_IPA(iob->data)) {
603 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
604 if (IS_IPA_REPLY(cmd)) {
605 if (cmd->hdr.command != IPA_CMD_SETCCID &&
606 cmd->hdr.command != IPA_CMD_DELCCID &&
607 cmd->hdr.command != IPA_CMD_MODCCID &&
608 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
609 qeth_issue_ipa_msg(cmd,
610 cmd->hdr.return_code, card);
611 return cmd;
612 } else {
613 switch (cmd->hdr.command) {
614 case IPA_CMD_STOPLAN:
615 if (cmd->hdr.return_code ==
616 IPA_RC_VEPA_TO_VEB_TRANSITION) {
617 dev_err(&card->gdev->dev,
618 "Interface %s is down because the "
619 "adjacent port is no longer in "
620 "reflective relay mode\n",
621 QETH_CARD_IFNAME(card));
622 qeth_close_dev(card);
623 } else {
624 dev_warn(&card->gdev->dev,
625 "The link for interface %s on CHPID"
626 " 0x%X failed\n",
627 QETH_CARD_IFNAME(card),
628 card->info.chpid);
629 qeth_issue_ipa_msg(cmd,
630 cmd->hdr.return_code, card);
631 }
632 card->lan_online = 0;
633 if (card->dev && netif_carrier_ok(card->dev))
634 netif_carrier_off(card->dev);
635 return NULL;
636 case IPA_CMD_STARTLAN:
637 dev_info(&card->gdev->dev,
638 "The link for %s on CHPID 0x%X has"
639 " been restored\n",
640 QETH_CARD_IFNAME(card),
641 card->info.chpid);
642 netif_carrier_on(card->dev);
643 card->lan_online = 1;
644 if (card->info.hwtrap)
645 card->info.hwtrap = 2;
646 qeth_schedule_recovery(card);
647 return NULL;
648 case IPA_CMD_SETBRIDGEPORT_IQD:
649 case IPA_CMD_SETBRIDGEPORT_OSA:
650 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
651 if (card->discipline->control_event_handler
652 (card, cmd))
653 return cmd;
654 else
655 return NULL;
656 case IPA_CMD_MODCCID:
657 return cmd;
658 case IPA_CMD_REGISTER_LOCAL_ADDR:
659 QETH_CARD_TEXT(card, 3, "irla");
660 break;
661 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
662 QETH_CARD_TEXT(card, 3, "urla");
663 break;
664 default:
665 QETH_DBF_MESSAGE(2, "Received data is IPA "
666 "but not a reply!\n");
667 break;
668 }
669 }
670 }
671 return cmd;
672 }
673
674 void qeth_clear_ipacmd_list(struct qeth_card *card)
675 {
676 struct qeth_reply *reply, *r;
677 unsigned long flags;
678
679 QETH_CARD_TEXT(card, 4, "clipalst");
680
681 spin_lock_irqsave(&card->lock, flags);
682 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
683 qeth_get_reply(reply);
684 reply->rc = -EIO;
685 atomic_inc(&reply->received);
686 list_del_init(&reply->list);
687 wake_up(&reply->wait_q);
688 qeth_put_reply(reply);
689 }
690 spin_unlock_irqrestore(&card->lock, flags);
691 atomic_set(&card->write.irq_pending, 0);
692 }
693 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
694
695 static int qeth_check_idx_response(struct qeth_card *card,
696 unsigned char *buffer)
697 {
698 if (!buffer)
699 return 0;
700
701 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
702 if ((buffer[2] & 0xc0) == 0xc0) {
703 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
704 "with cause code 0x%02x%s\n",
705 buffer[4],
706 ((buffer[4] == 0x22) ?
707 " -- try another portname" : ""));
708 QETH_CARD_TEXT(card, 2, "ckidxres");
709 QETH_CARD_TEXT(card, 2, " idxterm");
710 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
711 if (buffer[4] == 0xf6) {
712 dev_err(&card->gdev->dev,
713 "The qeth device is not configured "
714 "for the OSI layer required by z/VM\n");
715 return -EPERM;
716 }
717 return -EIO;
718 }
719 return 0;
720 }
721
722 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
723 {
724 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
725 dev_get_drvdata(&cdev->dev))->dev);
726 return card;
727 }
728
729 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
730 __u32 len)
731 {
732 struct qeth_card *card;
733
734 card = CARD_FROM_CDEV(channel->ccwdev);
735 QETH_CARD_TEXT(card, 4, "setupccw");
736 if (channel == &card->read)
737 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
738 else
739 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
740 channel->ccw.count = len;
741 channel->ccw.cda = (__u32) __pa(iob);
742 }
743
744 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
745 {
746 __u8 index;
747
748 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
749 index = channel->io_buf_no;
750 do {
751 if (channel->iob[index].state == BUF_STATE_FREE) {
752 channel->iob[index].state = BUF_STATE_LOCKED;
753 channel->io_buf_no = (channel->io_buf_no + 1) %
754 QETH_CMD_BUFFER_NO;
755 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
756 return channel->iob + index;
757 }
758 index = (index + 1) % QETH_CMD_BUFFER_NO;
759 } while (index != channel->io_buf_no);
760
761 return NULL;
762 }
763
764 void qeth_release_buffer(struct qeth_channel *channel,
765 struct qeth_cmd_buffer *iob)
766 {
767 unsigned long flags;
768
769 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
770 spin_lock_irqsave(&channel->iob_lock, flags);
771 memset(iob->data, 0, QETH_BUFSIZE);
772 iob->state = BUF_STATE_FREE;
773 iob->callback = qeth_send_control_data_cb;
774 iob->rc = 0;
775 spin_unlock_irqrestore(&channel->iob_lock, flags);
776 wake_up(&channel->wait_q);
777 }
778 EXPORT_SYMBOL_GPL(qeth_release_buffer);
779
780 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
781 {
782 struct qeth_cmd_buffer *buffer = NULL;
783 unsigned long flags;
784
785 spin_lock_irqsave(&channel->iob_lock, flags);
786 buffer = __qeth_get_buffer(channel);
787 spin_unlock_irqrestore(&channel->iob_lock, flags);
788 return buffer;
789 }
790
791 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
792 {
793 struct qeth_cmd_buffer *buffer;
794 wait_event(channel->wait_q,
795 ((buffer = qeth_get_buffer(channel)) != NULL));
796 return buffer;
797 }
798 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
799
800 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
801 {
802 int cnt;
803
804 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
805 qeth_release_buffer(channel, &channel->iob[cnt]);
806 channel->buf_no = 0;
807 channel->io_buf_no = 0;
808 }
809 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
810
811 static void qeth_send_control_data_cb(struct qeth_channel *channel,
812 struct qeth_cmd_buffer *iob)
813 {
814 struct qeth_card *card;
815 struct qeth_reply *reply, *r;
816 struct qeth_ipa_cmd *cmd;
817 unsigned long flags;
818 int keep_reply;
819 int rc = 0;
820
821 card = CARD_FROM_CDEV(channel->ccwdev);
822 QETH_CARD_TEXT(card, 4, "sndctlcb");
823 rc = qeth_check_idx_response(card, iob->data);
824 switch (rc) {
825 case 0:
826 break;
827 case -EIO:
828 qeth_clear_ipacmd_list(card);
829 qeth_schedule_recovery(card);
830 /* fall through */
831 default:
832 goto out;
833 }
834
835 cmd = qeth_check_ipa_data(card, iob);
836 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
837 goto out;
838 /*in case of OSN : check if cmd is set */
839 if (card->info.type == QETH_CARD_TYPE_OSN &&
840 cmd &&
841 cmd->hdr.command != IPA_CMD_STARTLAN &&
842 card->osn_info.assist_cb != NULL) {
843 card->osn_info.assist_cb(card->dev, cmd);
844 goto out;
845 }
846
847 spin_lock_irqsave(&card->lock, flags);
848 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
849 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
850 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
851 qeth_get_reply(reply);
852 list_del_init(&reply->list);
853 spin_unlock_irqrestore(&card->lock, flags);
854 keep_reply = 0;
855 if (reply->callback != NULL) {
856 if (cmd) {
857 reply->offset = (__u16)((char *)cmd -
858 (char *)iob->data);
859 keep_reply = reply->callback(card,
860 reply,
861 (unsigned long)cmd);
862 } else
863 keep_reply = reply->callback(card,
864 reply,
865 (unsigned long)iob);
866 }
867 if (cmd)
868 reply->rc = (u16) cmd->hdr.return_code;
869 else if (iob->rc)
870 reply->rc = iob->rc;
871 if (keep_reply) {
872 spin_lock_irqsave(&card->lock, flags);
873 list_add_tail(&reply->list,
874 &card->cmd_waiter_list);
875 spin_unlock_irqrestore(&card->lock, flags);
876 } else {
877 atomic_inc(&reply->received);
878 wake_up(&reply->wait_q);
879 }
880 qeth_put_reply(reply);
881 goto out;
882 }
883 }
884 spin_unlock_irqrestore(&card->lock, flags);
885 out:
886 memcpy(&card->seqno.pdu_hdr_ack,
887 QETH_PDU_HEADER_SEQ_NO(iob->data),
888 QETH_SEQ_NO_LENGTH);
889 qeth_release_buffer(channel, iob);
890 }
891
892 static int qeth_setup_channel(struct qeth_channel *channel)
893 {
894 int cnt;
895
896 QETH_DBF_TEXT(SETUP, 2, "setupch");
897 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
898 channel->iob[cnt].data =
899 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
900 if (channel->iob[cnt].data == NULL)
901 break;
902 channel->iob[cnt].state = BUF_STATE_FREE;
903 channel->iob[cnt].channel = channel;
904 channel->iob[cnt].callback = qeth_send_control_data_cb;
905 channel->iob[cnt].rc = 0;
906 }
907 if (cnt < QETH_CMD_BUFFER_NO) {
908 while (cnt-- > 0)
909 kfree(channel->iob[cnt].data);
910 return -ENOMEM;
911 }
912 channel->buf_no = 0;
913 channel->io_buf_no = 0;
914 atomic_set(&channel->irq_pending, 0);
915 spin_lock_init(&channel->iob_lock);
916
917 init_waitqueue_head(&channel->wait_q);
918 return 0;
919 }
920
921 static int qeth_set_thread_start_bit(struct qeth_card *card,
922 unsigned long thread)
923 {
924 unsigned long flags;
925
926 spin_lock_irqsave(&card->thread_mask_lock, flags);
927 if (!(card->thread_allowed_mask & thread) ||
928 (card->thread_start_mask & thread)) {
929 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
930 return -EPERM;
931 }
932 card->thread_start_mask |= thread;
933 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
934 return 0;
935 }
936
937 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
938 {
939 unsigned long flags;
940
941 spin_lock_irqsave(&card->thread_mask_lock, flags);
942 card->thread_start_mask &= ~thread;
943 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
944 wake_up(&card->wait_q);
945 }
946 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
947
948 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
949 {
950 unsigned long flags;
951
952 spin_lock_irqsave(&card->thread_mask_lock, flags);
953 card->thread_running_mask &= ~thread;
954 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
955 wake_up(&card->wait_q);
956 }
957 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
958
959 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
960 {
961 unsigned long flags;
962 int rc = 0;
963
964 spin_lock_irqsave(&card->thread_mask_lock, flags);
965 if (card->thread_start_mask & thread) {
966 if ((card->thread_allowed_mask & thread) &&
967 !(card->thread_running_mask & thread)) {
968 rc = 1;
969 card->thread_start_mask &= ~thread;
970 card->thread_running_mask |= thread;
971 } else
972 rc = -EPERM;
973 }
974 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
975 return rc;
976 }
977
978 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
979 {
980 int rc = 0;
981
982 wait_event(card->wait_q,
983 (rc = __qeth_do_run_thread(card, thread)) >= 0);
984 return rc;
985 }
986 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
987
988 void qeth_schedule_recovery(struct qeth_card *card)
989 {
990 QETH_CARD_TEXT(card, 2, "startrec");
991 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
992 schedule_work(&card->kernel_thread_starter);
993 }
994 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
995
996 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
997 {
998 int dstat, cstat;
999 char *sense;
1000 struct qeth_card *card;
1001
1002 sense = (char *) irb->ecw;
1003 cstat = irb->scsw.cmd.cstat;
1004 dstat = irb->scsw.cmd.dstat;
1005 card = CARD_FROM_CDEV(cdev);
1006
1007 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1008 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1009 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1010 QETH_CARD_TEXT(card, 2, "CGENCHK");
1011 dev_warn(&cdev->dev, "The qeth device driver "
1012 "failed to recover an error on the device\n");
1013 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1014 dev_name(&cdev->dev), dstat, cstat);
1015 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1016 16, 1, irb, 64, 1);
1017 return 1;
1018 }
1019
1020 if (dstat & DEV_STAT_UNIT_CHECK) {
1021 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1022 SENSE_RESETTING_EVENT_FLAG) {
1023 QETH_CARD_TEXT(card, 2, "REVIND");
1024 return 1;
1025 }
1026 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1027 SENSE_COMMAND_REJECT_FLAG) {
1028 QETH_CARD_TEXT(card, 2, "CMDREJi");
1029 return 1;
1030 }
1031 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1032 QETH_CARD_TEXT(card, 2, "AFFE");
1033 return 1;
1034 }
1035 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1036 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1037 return 0;
1038 }
1039 QETH_CARD_TEXT(card, 2, "DGENCHK");
1040 return 1;
1041 }
1042 return 0;
1043 }
1044
1045 static long __qeth_check_irb_error(struct ccw_device *cdev,
1046 unsigned long intparm, struct irb *irb)
1047 {
1048 struct qeth_card *card;
1049
1050 card = CARD_FROM_CDEV(cdev);
1051
1052 if (!card || !IS_ERR(irb))
1053 return 0;
1054
1055 switch (PTR_ERR(irb)) {
1056 case -EIO:
1057 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1058 dev_name(&cdev->dev));
1059 QETH_CARD_TEXT(card, 2, "ckirberr");
1060 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1061 break;
1062 case -ETIMEDOUT:
1063 dev_warn(&cdev->dev, "A hardware operation timed out"
1064 " on the device\n");
1065 QETH_CARD_TEXT(card, 2, "ckirberr");
1066 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1067 if (intparm == QETH_RCD_PARM) {
1068 if (card->data.ccwdev == cdev) {
1069 card->data.state = CH_STATE_DOWN;
1070 wake_up(&card->wait_q);
1071 }
1072 }
1073 break;
1074 default:
1075 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1076 dev_name(&cdev->dev), PTR_ERR(irb));
1077 QETH_CARD_TEXT(card, 2, "ckirberr");
1078 QETH_CARD_TEXT(card, 2, " rc???");
1079 }
1080 return PTR_ERR(irb);
1081 }
1082
1083 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1084 struct irb *irb)
1085 {
1086 int rc;
1087 int cstat, dstat;
1088 struct qeth_cmd_buffer *buffer;
1089 struct qeth_channel *channel;
1090 struct qeth_card *card;
1091 struct qeth_cmd_buffer *iob;
1092 __u8 index;
1093
1094 if (__qeth_check_irb_error(cdev, intparm, irb))
1095 return;
1096 cstat = irb->scsw.cmd.cstat;
1097 dstat = irb->scsw.cmd.dstat;
1098
1099 card = CARD_FROM_CDEV(cdev);
1100 if (!card)
1101 return;
1102
1103 QETH_CARD_TEXT(card, 5, "irq");
1104
1105 if (card->read.ccwdev == cdev) {
1106 channel = &card->read;
1107 QETH_CARD_TEXT(card, 5, "read");
1108 } else if (card->write.ccwdev == cdev) {
1109 channel = &card->write;
1110 QETH_CARD_TEXT(card, 5, "write");
1111 } else {
1112 channel = &card->data;
1113 QETH_CARD_TEXT(card, 5, "data");
1114 }
1115 atomic_set(&channel->irq_pending, 0);
1116
1117 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1118 channel->state = CH_STATE_STOPPED;
1119
1120 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1121 channel->state = CH_STATE_HALTED;
1122
1123 /*let's wake up immediately on data channel*/
1124 if ((channel == &card->data) && (intparm != 0) &&
1125 (intparm != QETH_RCD_PARM))
1126 goto out;
1127
1128 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1129 QETH_CARD_TEXT(card, 6, "clrchpar");
1130 /* we don't have to handle this further */
1131 intparm = 0;
1132 }
1133 if (intparm == QETH_HALT_CHANNEL_PARM) {
1134 QETH_CARD_TEXT(card, 6, "hltchpar");
1135 /* we don't have to handle this further */
1136 intparm = 0;
1137 }
1138 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1139 (dstat & DEV_STAT_UNIT_CHECK) ||
1140 (cstat)) {
1141 if (irb->esw.esw0.erw.cons) {
1142 dev_warn(&channel->ccwdev->dev,
1143 "The qeth device driver failed to recover "
1144 "an error on the device\n");
1145 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1146 "0x%X dstat 0x%X\n",
1147 dev_name(&channel->ccwdev->dev), cstat, dstat);
1148 print_hex_dump(KERN_WARNING, "qeth: irb ",
1149 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1150 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1151 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1152 }
1153 if (intparm == QETH_RCD_PARM) {
1154 channel->state = CH_STATE_DOWN;
1155 goto out;
1156 }
1157 rc = qeth_get_problem(cdev, irb);
1158 if (rc) {
1159 qeth_clear_ipacmd_list(card);
1160 qeth_schedule_recovery(card);
1161 goto out;
1162 }
1163 }
1164
1165 if (intparm == QETH_RCD_PARM) {
1166 channel->state = CH_STATE_RCD_DONE;
1167 goto out;
1168 }
1169 if (intparm) {
1170 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1171 buffer->state = BUF_STATE_PROCESSED;
1172 }
1173 if (channel == &card->data)
1174 return;
1175 if (channel == &card->read &&
1176 channel->state == CH_STATE_UP)
1177 qeth_issue_next_read(card);
1178
1179 iob = channel->iob;
1180 index = channel->buf_no;
1181 while (iob[index].state == BUF_STATE_PROCESSED) {
1182 if (iob[index].callback != NULL)
1183 iob[index].callback(channel, iob + index);
1184
1185 index = (index + 1) % QETH_CMD_BUFFER_NO;
1186 }
1187 channel->buf_no = index;
1188 out:
1189 wake_up(&card->wait_q);
1190 return;
1191 }
1192
1193 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1194 struct qeth_qdio_out_buffer *buf,
1195 enum iucv_tx_notify notification)
1196 {
1197 struct sk_buff *skb;
1198
1199 if (skb_queue_empty(&buf->skb_list))
1200 goto out;
1201 skb = skb_peek(&buf->skb_list);
1202 while (skb) {
1203 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1204 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1205 if (skb->protocol == ETH_P_AF_IUCV) {
1206 if (skb->sk) {
1207 struct iucv_sock *iucv = iucv_sk(skb->sk);
1208 iucv->sk_txnotify(skb, notification);
1209 }
1210 }
1211 if (skb_queue_is_last(&buf->skb_list, skb))
1212 skb = NULL;
1213 else
1214 skb = skb_queue_next(&buf->skb_list, skb);
1215 }
1216 out:
1217 return;
1218 }
1219
1220 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1221 {
1222 struct sk_buff *skb;
1223 struct iucv_sock *iucv;
1224 int notify_general_error = 0;
1225
1226 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1227 notify_general_error = 1;
1228
1229 /* release may never happen from within CQ tasklet scope */
1230 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1231
1232 skb = skb_dequeue(&buf->skb_list);
1233 while (skb) {
1234 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1235 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1236 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1237 if (skb->sk) {
1238 iucv = iucv_sk(skb->sk);
1239 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1240 }
1241 }
1242 atomic_dec(&skb->users);
1243 dev_kfree_skb_any(skb);
1244 skb = skb_dequeue(&buf->skb_list);
1245 }
1246 }
1247
1248 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1249 struct qeth_qdio_out_buffer *buf,
1250 enum qeth_qdio_buffer_states newbufstate)
1251 {
1252 int i;
1253
1254 /* is PCI flag set on buffer? */
1255 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1256 atomic_dec(&queue->set_pci_flags_count);
1257
1258 if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1259 qeth_release_skbs(buf);
1260 }
1261 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1262 if (buf->buffer->element[i].addr && buf->is_header[i])
1263 kmem_cache_free(qeth_core_header_cache,
1264 buf->buffer->element[i].addr);
1265 buf->is_header[i] = 0;
1266 buf->buffer->element[i].length = 0;
1267 buf->buffer->element[i].addr = NULL;
1268 buf->buffer->element[i].eflags = 0;
1269 buf->buffer->element[i].sflags = 0;
1270 }
1271 buf->buffer->element[15].eflags = 0;
1272 buf->buffer->element[15].sflags = 0;
1273 buf->next_element_to_fill = 0;
1274 atomic_set(&buf->state, newbufstate);
1275 }
1276
1277 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1278 {
1279 int j;
1280
1281 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1282 if (!q->bufs[j])
1283 continue;
1284 qeth_cleanup_handled_pending(q, j, 1);
1285 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1286 if (free) {
1287 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1288 q->bufs[j] = NULL;
1289 }
1290 }
1291 }
1292
1293 void qeth_clear_qdio_buffers(struct qeth_card *card)
1294 {
1295 int i;
1296
1297 QETH_CARD_TEXT(card, 2, "clearqdbf");
1298 /* clear outbound buffers to free skbs */
1299 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1300 if (card->qdio.out_qs[i]) {
1301 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1302 }
1303 }
1304 }
1305 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1306
1307 static void qeth_free_buffer_pool(struct qeth_card *card)
1308 {
1309 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1310 int i = 0;
1311 list_for_each_entry_safe(pool_entry, tmp,
1312 &card->qdio.init_pool.entry_list, init_list){
1313 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1314 free_page((unsigned long)pool_entry->elements[i]);
1315 list_del(&pool_entry->init_list);
1316 kfree(pool_entry);
1317 }
1318 }
1319
1320 static void qeth_clean_channel(struct qeth_channel *channel)
1321 {
1322 int cnt;
1323
1324 QETH_DBF_TEXT(SETUP, 2, "freech");
1325 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1326 kfree(channel->iob[cnt].data);
1327 }
1328
1329 static void qeth_set_single_write_queues(struct qeth_card *card)
1330 {
1331 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1332 (card->qdio.no_out_queues == 4))
1333 qeth_free_qdio_buffers(card);
1334
1335 card->qdio.no_out_queues = 1;
1336 if (card->qdio.default_out_queue != 0)
1337 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1338
1339 card->qdio.default_out_queue = 0;
1340 }
1341
1342 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1343 {
1344 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1345 (card->qdio.no_out_queues == 1)) {
1346 qeth_free_qdio_buffers(card);
1347 card->qdio.default_out_queue = 2;
1348 }
1349 card->qdio.no_out_queues = 4;
1350 }
1351
1352 static void qeth_update_from_chp_desc(struct qeth_card *card)
1353 {
1354 struct ccw_device *ccwdev;
1355 struct channel_path_desc *chp_dsc;
1356
1357 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1358
1359 ccwdev = card->data.ccwdev;
1360 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1361 if (!chp_dsc)
1362 goto out;
1363
1364 card->info.func_level = 0x4100 + chp_dsc->desc;
1365 if (card->info.type == QETH_CARD_TYPE_IQD)
1366 goto out;
1367
1368 /* CHPP field bit 6 == 1 -> single queue */
1369 if ((chp_dsc->chpp & 0x02) == 0x02)
1370 qeth_set_single_write_queues(card);
1371 else
1372 qeth_set_multiple_write_queues(card);
1373 out:
1374 kfree(chp_dsc);
1375 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1376 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1377 }
1378
1379 static void qeth_init_qdio_info(struct qeth_card *card)
1380 {
1381 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1382 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1383 /* inbound */
1384 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1385 if (card->info.type == QETH_CARD_TYPE_IQD)
1386 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1387 else
1388 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1389 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1390 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1391 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1392 }
1393
1394 static void qeth_set_intial_options(struct qeth_card *card)
1395 {
1396 card->options.route4.type = NO_ROUTER;
1397 card->options.route6.type = NO_ROUTER;
1398 card->options.fake_broadcast = 0;
1399 card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1400 card->options.performance_stats = 0;
1401 card->options.rx_sg_cb = QETH_RX_SG_CB;
1402 card->options.isolation = ISOLATION_MODE_NONE;
1403 card->options.cq = QETH_CQ_DISABLED;
1404 }
1405
1406 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1407 {
1408 unsigned long flags;
1409 int rc = 0;
1410
1411 spin_lock_irqsave(&card->thread_mask_lock, flags);
1412 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1413 (u8) card->thread_start_mask,
1414 (u8) card->thread_allowed_mask,
1415 (u8) card->thread_running_mask);
1416 rc = (card->thread_start_mask & thread);
1417 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1418 return rc;
1419 }
1420
1421 static void qeth_start_kernel_thread(struct work_struct *work)
1422 {
1423 struct task_struct *ts;
1424 struct qeth_card *card = container_of(work, struct qeth_card,
1425 kernel_thread_starter);
1426 QETH_CARD_TEXT(card , 2, "strthrd");
1427
1428 if (card->read.state != CH_STATE_UP &&
1429 card->write.state != CH_STATE_UP)
1430 return;
1431 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1432 ts = kthread_run(card->discipline->recover, (void *)card,
1433 "qeth_recover");
1434 if (IS_ERR(ts)) {
1435 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1436 qeth_clear_thread_running_bit(card,
1437 QETH_RECOVER_THREAD);
1438 }
1439 }
1440 }
1441
1442 static void qeth_buffer_reclaim_work(struct work_struct *);
1443 static int qeth_setup_card(struct qeth_card *card)
1444 {
1445
1446 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1447 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1448
1449 card->read.state = CH_STATE_DOWN;
1450 card->write.state = CH_STATE_DOWN;
1451 card->data.state = CH_STATE_DOWN;
1452 card->state = CARD_STATE_DOWN;
1453 card->lan_online = 0;
1454 card->read_or_write_problem = 0;
1455 card->dev = NULL;
1456 spin_lock_init(&card->vlanlock);
1457 spin_lock_init(&card->mclock);
1458 spin_lock_init(&card->lock);
1459 spin_lock_init(&card->ip_lock);
1460 spin_lock_init(&card->thread_mask_lock);
1461 mutex_init(&card->conf_mutex);
1462 mutex_init(&card->discipline_mutex);
1463 card->thread_start_mask = 0;
1464 card->thread_allowed_mask = 0;
1465 card->thread_running_mask = 0;
1466 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1467 INIT_LIST_HEAD(&card->cmd_waiter_list);
1468 init_waitqueue_head(&card->wait_q);
1469 /* initial options */
1470 qeth_set_intial_options(card);
1471 /* IP address takeover */
1472 INIT_LIST_HEAD(&card->ipato.entries);
1473 card->ipato.enabled = 0;
1474 card->ipato.invert4 = 0;
1475 card->ipato.invert6 = 0;
1476 /* init QDIO stuff */
1477 qeth_init_qdio_info(card);
1478 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1479 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1480 return 0;
1481 }
1482
1483 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1484 {
1485 struct qeth_card *card = container_of(slr, struct qeth_card,
1486 qeth_service_level);
1487 if (card->info.mcl_level[0])
1488 seq_printf(m, "qeth: %s firmware level %s\n",
1489 CARD_BUS_ID(card), card->info.mcl_level);
1490 }
1491
1492 static struct qeth_card *qeth_alloc_card(void)
1493 {
1494 struct qeth_card *card;
1495
1496 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1497 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1498 if (!card)
1499 goto out;
1500 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1501 if (qeth_setup_channel(&card->read))
1502 goto out_ip;
1503 if (qeth_setup_channel(&card->write))
1504 goto out_channel;
1505 card->options.layer2 = -1;
1506 card->qeth_service_level.seq_print = qeth_core_sl_print;
1507 register_service_level(&card->qeth_service_level);
1508 return card;
1509
1510 out_channel:
1511 qeth_clean_channel(&card->read);
1512 out_ip:
1513 kfree(card);
1514 out:
1515 return NULL;
1516 }
1517
1518 static int qeth_determine_card_type(struct qeth_card *card)
1519 {
1520 int i = 0;
1521
1522 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1523
1524 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1525 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1526 while (known_devices[i][QETH_DEV_MODEL_IND]) {
1527 if ((CARD_RDEV(card)->id.dev_type ==
1528 known_devices[i][QETH_DEV_TYPE_IND]) &&
1529 (CARD_RDEV(card)->id.dev_model ==
1530 known_devices[i][QETH_DEV_MODEL_IND])) {
1531 card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1532 card->qdio.no_out_queues =
1533 known_devices[i][QETH_QUEUE_NO_IND];
1534 card->qdio.no_in_queues = 1;
1535 card->info.is_multicast_different =
1536 known_devices[i][QETH_MULTICAST_IND];
1537 qeth_update_from_chp_desc(card);
1538 return 0;
1539 }
1540 i++;
1541 }
1542 card->info.type = QETH_CARD_TYPE_UNKNOWN;
1543 dev_err(&card->gdev->dev, "The adapter hardware is of an "
1544 "unknown type\n");
1545 return -ENOENT;
1546 }
1547
1548 static int qeth_clear_channel(struct qeth_channel *channel)
1549 {
1550 unsigned long flags;
1551 struct qeth_card *card;
1552 int rc;
1553
1554 card = CARD_FROM_CDEV(channel->ccwdev);
1555 QETH_CARD_TEXT(card, 3, "clearch");
1556 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1557 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1558 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1559
1560 if (rc)
1561 return rc;
1562 rc = wait_event_interruptible_timeout(card->wait_q,
1563 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1564 if (rc == -ERESTARTSYS)
1565 return rc;
1566 if (channel->state != CH_STATE_STOPPED)
1567 return -ETIME;
1568 channel->state = CH_STATE_DOWN;
1569 return 0;
1570 }
1571
1572 static int qeth_halt_channel(struct qeth_channel *channel)
1573 {
1574 unsigned long flags;
1575 struct qeth_card *card;
1576 int rc;
1577
1578 card = CARD_FROM_CDEV(channel->ccwdev);
1579 QETH_CARD_TEXT(card, 3, "haltch");
1580 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1581 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1582 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1583
1584 if (rc)
1585 return rc;
1586 rc = wait_event_interruptible_timeout(card->wait_q,
1587 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1588 if (rc == -ERESTARTSYS)
1589 return rc;
1590 if (channel->state != CH_STATE_HALTED)
1591 return -ETIME;
1592 return 0;
1593 }
1594
1595 static int qeth_halt_channels(struct qeth_card *card)
1596 {
1597 int rc1 = 0, rc2 = 0, rc3 = 0;
1598
1599 QETH_CARD_TEXT(card, 3, "haltchs");
1600 rc1 = qeth_halt_channel(&card->read);
1601 rc2 = qeth_halt_channel(&card->write);
1602 rc3 = qeth_halt_channel(&card->data);
1603 if (rc1)
1604 return rc1;
1605 if (rc2)
1606 return rc2;
1607 return rc3;
1608 }
1609
1610 static int qeth_clear_channels(struct qeth_card *card)
1611 {
1612 int rc1 = 0, rc2 = 0, rc3 = 0;
1613
1614 QETH_CARD_TEXT(card, 3, "clearchs");
1615 rc1 = qeth_clear_channel(&card->read);
1616 rc2 = qeth_clear_channel(&card->write);
1617 rc3 = qeth_clear_channel(&card->data);
1618 if (rc1)
1619 return rc1;
1620 if (rc2)
1621 return rc2;
1622 return rc3;
1623 }
1624
1625 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1626 {
1627 int rc = 0;
1628
1629 QETH_CARD_TEXT(card, 3, "clhacrd");
1630
1631 if (halt)
1632 rc = qeth_halt_channels(card);
1633 if (rc)
1634 return rc;
1635 return qeth_clear_channels(card);
1636 }
1637
1638 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1639 {
1640 int rc = 0;
1641
1642 QETH_CARD_TEXT(card, 3, "qdioclr");
1643 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1644 QETH_QDIO_CLEANING)) {
1645 case QETH_QDIO_ESTABLISHED:
1646 if (card->info.type == QETH_CARD_TYPE_IQD)
1647 rc = qdio_shutdown(CARD_DDEV(card),
1648 QDIO_FLAG_CLEANUP_USING_HALT);
1649 else
1650 rc = qdio_shutdown(CARD_DDEV(card),
1651 QDIO_FLAG_CLEANUP_USING_CLEAR);
1652 if (rc)
1653 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1654 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1655 break;
1656 case QETH_QDIO_CLEANING:
1657 return rc;
1658 default:
1659 break;
1660 }
1661 rc = qeth_clear_halt_card(card, use_halt);
1662 if (rc)
1663 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1664 card->state = CARD_STATE_DOWN;
1665 return rc;
1666 }
1667 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1668
1669 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1670 int *length)
1671 {
1672 struct ciw *ciw;
1673 char *rcd_buf;
1674 int ret;
1675 struct qeth_channel *channel = &card->data;
1676 unsigned long flags;
1677
1678 /*
1679 * scan for RCD command in extended SenseID data
1680 */
1681 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1682 if (!ciw || ciw->cmd == 0)
1683 return -EOPNOTSUPP;
1684 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1685 if (!rcd_buf)
1686 return -ENOMEM;
1687
1688 channel->ccw.cmd_code = ciw->cmd;
1689 channel->ccw.cda = (__u32) __pa(rcd_buf);
1690 channel->ccw.count = ciw->count;
1691 channel->ccw.flags = CCW_FLAG_SLI;
1692 channel->state = CH_STATE_RCD;
1693 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1694 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1695 QETH_RCD_PARM, LPM_ANYPATH, 0,
1696 QETH_RCD_TIMEOUT);
1697 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1698 if (!ret)
1699 wait_event(card->wait_q,
1700 (channel->state == CH_STATE_RCD_DONE ||
1701 channel->state == CH_STATE_DOWN));
1702 if (channel->state == CH_STATE_DOWN)
1703 ret = -EIO;
1704 else
1705 channel->state = CH_STATE_DOWN;
1706 if (ret) {
1707 kfree(rcd_buf);
1708 *buffer = NULL;
1709 *length = 0;
1710 } else {
1711 *length = ciw->count;
1712 *buffer = rcd_buf;
1713 }
1714 return ret;
1715 }
1716
1717 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1718 {
1719 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1720 card->info.chpid = prcd[30];
1721 card->info.unit_addr2 = prcd[31];
1722 card->info.cula = prcd[63];
1723 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1724 (prcd[0x11] == _ascebc['M']));
1725 }
1726
1727 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1728 {
1729 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1730
1731 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1732 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1733 card->info.blkt.time_total = 0;
1734 card->info.blkt.inter_packet = 0;
1735 card->info.blkt.inter_packet_jumbo = 0;
1736 } else {
1737 card->info.blkt.time_total = 250;
1738 card->info.blkt.inter_packet = 5;
1739 card->info.blkt.inter_packet_jumbo = 15;
1740 }
1741 }
1742
1743 static void qeth_init_tokens(struct qeth_card *card)
1744 {
1745 card->token.issuer_rm_w = 0x00010103UL;
1746 card->token.cm_filter_w = 0x00010108UL;
1747 card->token.cm_connection_w = 0x0001010aUL;
1748 card->token.ulp_filter_w = 0x0001010bUL;
1749 card->token.ulp_connection_w = 0x0001010dUL;
1750 }
1751
1752 static void qeth_init_func_level(struct qeth_card *card)
1753 {
1754 switch (card->info.type) {
1755 case QETH_CARD_TYPE_IQD:
1756 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1757 break;
1758 case QETH_CARD_TYPE_OSD:
1759 case QETH_CARD_TYPE_OSN:
1760 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1761 break;
1762 default:
1763 break;
1764 }
1765 }
1766
1767 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1768 void (*idx_reply_cb)(struct qeth_channel *,
1769 struct qeth_cmd_buffer *))
1770 {
1771 struct qeth_cmd_buffer *iob;
1772 unsigned long flags;
1773 int rc;
1774 struct qeth_card *card;
1775
1776 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1777 card = CARD_FROM_CDEV(channel->ccwdev);
1778 iob = qeth_get_buffer(channel);
1779 if (!iob)
1780 return -ENOMEM;
1781 iob->callback = idx_reply_cb;
1782 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1783 channel->ccw.count = QETH_BUFSIZE;
1784 channel->ccw.cda = (__u32) __pa(iob->data);
1785
1786 wait_event(card->wait_q,
1787 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1788 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1789 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1790 rc = ccw_device_start(channel->ccwdev,
1791 &channel->ccw, (addr_t) iob, 0, 0);
1792 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1793
1794 if (rc) {
1795 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1796 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1797 atomic_set(&channel->irq_pending, 0);
1798 wake_up(&card->wait_q);
1799 return rc;
1800 }
1801 rc = wait_event_interruptible_timeout(card->wait_q,
1802 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1803 if (rc == -ERESTARTSYS)
1804 return rc;
1805 if (channel->state != CH_STATE_UP) {
1806 rc = -ETIME;
1807 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1808 qeth_clear_cmd_buffers(channel);
1809 } else
1810 rc = 0;
1811 return rc;
1812 }
1813
1814 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1815 void (*idx_reply_cb)(struct qeth_channel *,
1816 struct qeth_cmd_buffer *))
1817 {
1818 struct qeth_card *card;
1819 struct qeth_cmd_buffer *iob;
1820 unsigned long flags;
1821 __u16 temp;
1822 __u8 tmp;
1823 int rc;
1824 struct ccw_dev_id temp_devid;
1825
1826 card = CARD_FROM_CDEV(channel->ccwdev);
1827
1828 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1829
1830 iob = qeth_get_buffer(channel);
1831 if (!iob)
1832 return -ENOMEM;
1833 iob->callback = idx_reply_cb;
1834 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1835 channel->ccw.count = IDX_ACTIVATE_SIZE;
1836 channel->ccw.cda = (__u32) __pa(iob->data);
1837 if (channel == &card->write) {
1838 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1839 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1840 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1841 card->seqno.trans_hdr++;
1842 } else {
1843 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1844 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1845 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1846 }
1847 tmp = ((__u8)card->info.portno) | 0x80;
1848 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1849 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1850 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1851 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1852 &card->info.func_level, sizeof(__u16));
1853 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1854 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1855 temp = (card->info.cula << 8) + card->info.unit_addr2;
1856 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1857
1858 wait_event(card->wait_q,
1859 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1860 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1861 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1862 rc = ccw_device_start(channel->ccwdev,
1863 &channel->ccw, (addr_t) iob, 0, 0);
1864 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1865
1866 if (rc) {
1867 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1868 rc);
1869 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1870 atomic_set(&channel->irq_pending, 0);
1871 wake_up(&card->wait_q);
1872 return rc;
1873 }
1874 rc = wait_event_interruptible_timeout(card->wait_q,
1875 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1876 if (rc == -ERESTARTSYS)
1877 return rc;
1878 if (channel->state != CH_STATE_ACTIVATING) {
1879 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1880 " failed to recover an error on the device\n");
1881 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1882 dev_name(&channel->ccwdev->dev));
1883 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1884 qeth_clear_cmd_buffers(channel);
1885 return -ETIME;
1886 }
1887 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1888 }
1889
1890 static int qeth_peer_func_level(int level)
1891 {
1892 if ((level & 0xff) == 8)
1893 return (level & 0xff) + 0x400;
1894 if (((level >> 8) & 3) == 1)
1895 return (level & 0xff) + 0x200;
1896 return level;
1897 }
1898
1899 static void qeth_idx_write_cb(struct qeth_channel *channel,
1900 struct qeth_cmd_buffer *iob)
1901 {
1902 struct qeth_card *card;
1903 __u16 temp;
1904
1905 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1906
1907 if (channel->state == CH_STATE_DOWN) {
1908 channel->state = CH_STATE_ACTIVATING;
1909 goto out;
1910 }
1911 card = CARD_FROM_CDEV(channel->ccwdev);
1912
1913 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1914 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1915 dev_err(&card->write.ccwdev->dev,
1916 "The adapter is used exclusively by another "
1917 "host\n");
1918 else
1919 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1920 " negative reply\n",
1921 dev_name(&card->write.ccwdev->dev));
1922 goto out;
1923 }
1924 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1925 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1926 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1927 "function level mismatch (sent: 0x%x, received: "
1928 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1929 card->info.func_level, temp);
1930 goto out;
1931 }
1932 channel->state = CH_STATE_UP;
1933 out:
1934 qeth_release_buffer(channel, iob);
1935 }
1936
1937 static void qeth_idx_read_cb(struct qeth_channel *channel,
1938 struct qeth_cmd_buffer *iob)
1939 {
1940 struct qeth_card *card;
1941 __u16 temp;
1942
1943 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1944 if (channel->state == CH_STATE_DOWN) {
1945 channel->state = CH_STATE_ACTIVATING;
1946 goto out;
1947 }
1948
1949 card = CARD_FROM_CDEV(channel->ccwdev);
1950 if (qeth_check_idx_response(card, iob->data))
1951 goto out;
1952
1953 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1954 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1955 case QETH_IDX_ACT_ERR_EXCL:
1956 dev_err(&card->write.ccwdev->dev,
1957 "The adapter is used exclusively by another "
1958 "host\n");
1959 break;
1960 case QETH_IDX_ACT_ERR_AUTH:
1961 case QETH_IDX_ACT_ERR_AUTH_USER:
1962 dev_err(&card->read.ccwdev->dev,
1963 "Setting the device online failed because of "
1964 "insufficient authorization\n");
1965 break;
1966 default:
1967 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1968 " negative reply\n",
1969 dev_name(&card->read.ccwdev->dev));
1970 }
1971 QETH_CARD_TEXT_(card, 2, "idxread%c",
1972 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1973 goto out;
1974 }
1975
1976 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1977 if (temp != qeth_peer_func_level(card->info.func_level)) {
1978 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1979 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1980 dev_name(&card->read.ccwdev->dev),
1981 card->info.func_level, temp);
1982 goto out;
1983 }
1984 memcpy(&card->token.issuer_rm_r,
1985 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1986 QETH_MPC_TOKEN_LENGTH);
1987 memcpy(&card->info.mcl_level[0],
1988 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1989 channel->state = CH_STATE_UP;
1990 out:
1991 qeth_release_buffer(channel, iob);
1992 }
1993
1994 void qeth_prepare_control_data(struct qeth_card *card, int len,
1995 struct qeth_cmd_buffer *iob)
1996 {
1997 qeth_setup_ccw(&card->write, iob->data, len);
1998 iob->callback = qeth_release_buffer;
1999
2000 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2001 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2002 card->seqno.trans_hdr++;
2003 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2004 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2005 card->seqno.pdu_hdr++;
2006 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2007 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2008 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2009 }
2010 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2011
2012 /**
2013 * qeth_send_control_data() - send control command to the card
2014 * @card: qeth_card structure pointer
2015 * @len: size of the command buffer
2016 * @iob: qeth_cmd_buffer pointer
2017 * @reply_cb: callback function pointer
2018 * @cb_card: pointer to the qeth_card structure
2019 * @cb_reply: pointer to the qeth_reply structure
2020 * @cb_cmd: pointer to the original iob for non-IPA
2021 * commands, or to the qeth_ipa_cmd structure
2022 * for the IPA commands.
2023 * @reply_param: private pointer passed to the callback
2024 *
2025 * Returns the value of the `return_code' field of the response
2026 * block returned from the hardware, or other error indication.
2027 * Value of zero indicates successful execution of the command.
2028 *
2029 * Callback function gets called one or more times, with cb_cmd
2030 * pointing to the response returned by the hardware. Callback
2031 * function must return non-zero if more reply blocks are expected,
2032 * and zero if the last or only reply block is received. Callback
2033 * function can get the value of the reply_param pointer from the
2034 * field 'param' of the structure qeth_reply.
2035 */
2036
2037 int qeth_send_control_data(struct qeth_card *card, int len,
2038 struct qeth_cmd_buffer *iob,
2039 int (*reply_cb)(struct qeth_card *cb_card,
2040 struct qeth_reply *cb_reply,
2041 unsigned long cb_cmd),
2042 void *reply_param)
2043 {
2044 int rc;
2045 unsigned long flags;
2046 struct qeth_reply *reply = NULL;
2047 unsigned long timeout, event_timeout;
2048 struct qeth_ipa_cmd *cmd;
2049
2050 QETH_CARD_TEXT(card, 2, "sendctl");
2051
2052 if (card->read_or_write_problem) {
2053 qeth_release_buffer(iob->channel, iob);
2054 return -EIO;
2055 }
2056 reply = qeth_alloc_reply(card);
2057 if (!reply) {
2058 return -ENOMEM;
2059 }
2060 reply->callback = reply_cb;
2061 reply->param = reply_param;
2062 if (card->state == CARD_STATE_DOWN)
2063 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2064 else
2065 reply->seqno = card->seqno.ipa++;
2066 init_waitqueue_head(&reply->wait_q);
2067 spin_lock_irqsave(&card->lock, flags);
2068 list_add_tail(&reply->list, &card->cmd_waiter_list);
2069 spin_unlock_irqrestore(&card->lock, flags);
2070 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2071
2072 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2073 qeth_prepare_control_data(card, len, iob);
2074
2075 if (IS_IPA(iob->data))
2076 event_timeout = QETH_IPA_TIMEOUT;
2077 else
2078 event_timeout = QETH_TIMEOUT;
2079 timeout = jiffies + event_timeout;
2080
2081 QETH_CARD_TEXT(card, 6, "noirqpnd");
2082 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2083 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2084 (addr_t) iob, 0, 0);
2085 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2086 if (rc) {
2087 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2088 "ccw_device_start rc = %i\n",
2089 dev_name(&card->write.ccwdev->dev), rc);
2090 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2091 spin_lock_irqsave(&card->lock, flags);
2092 list_del_init(&reply->list);
2093 qeth_put_reply(reply);
2094 spin_unlock_irqrestore(&card->lock, flags);
2095 qeth_release_buffer(iob->channel, iob);
2096 atomic_set(&card->write.irq_pending, 0);
2097 wake_up(&card->wait_q);
2098 return rc;
2099 }
2100
2101 /* we have only one long running ipassist, since we can ensure
2102 process context of this command we can sleep */
2103 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2104 if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2105 (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2106 if (!wait_event_timeout(reply->wait_q,
2107 atomic_read(&reply->received), event_timeout))
2108 goto time_err;
2109 } else {
2110 while (!atomic_read(&reply->received)) {
2111 if (time_after(jiffies, timeout))
2112 goto time_err;
2113 cpu_relax();
2114 }
2115 }
2116
2117 if (reply->rc == -EIO)
2118 goto error;
2119 rc = reply->rc;
2120 qeth_put_reply(reply);
2121 return rc;
2122
2123 time_err:
2124 reply->rc = -ETIME;
2125 spin_lock_irqsave(&reply->card->lock, flags);
2126 list_del_init(&reply->list);
2127 spin_unlock_irqrestore(&reply->card->lock, flags);
2128 atomic_inc(&reply->received);
2129 error:
2130 atomic_set(&card->write.irq_pending, 0);
2131 qeth_release_buffer(iob->channel, iob);
2132 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2133 rc = reply->rc;
2134 qeth_put_reply(reply);
2135 return rc;
2136 }
2137 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2138
2139 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2140 unsigned long data)
2141 {
2142 struct qeth_cmd_buffer *iob;
2143
2144 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2145
2146 iob = (struct qeth_cmd_buffer *) data;
2147 memcpy(&card->token.cm_filter_r,
2148 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2149 QETH_MPC_TOKEN_LENGTH);
2150 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2151 return 0;
2152 }
2153
2154 static int qeth_cm_enable(struct qeth_card *card)
2155 {
2156 int rc;
2157 struct qeth_cmd_buffer *iob;
2158
2159 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2160
2161 iob = qeth_wait_for_buffer(&card->write);
2162 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2163 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2164 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2165 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2166 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2167
2168 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2169 qeth_cm_enable_cb, NULL);
2170 return rc;
2171 }
2172
2173 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2174 unsigned long data)
2175 {
2176
2177 struct qeth_cmd_buffer *iob;
2178
2179 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2180
2181 iob = (struct qeth_cmd_buffer *) data;
2182 memcpy(&card->token.cm_connection_r,
2183 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2184 QETH_MPC_TOKEN_LENGTH);
2185 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2186 return 0;
2187 }
2188
2189 static int qeth_cm_setup(struct qeth_card *card)
2190 {
2191 int rc;
2192 struct qeth_cmd_buffer *iob;
2193
2194 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2195
2196 iob = qeth_wait_for_buffer(&card->write);
2197 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2198 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2199 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2200 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2201 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2202 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2203 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2204 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2205 qeth_cm_setup_cb, NULL);
2206 return rc;
2207
2208 }
2209
2210 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2211 {
2212 switch (card->info.type) {
2213 case QETH_CARD_TYPE_UNKNOWN:
2214 return 1500;
2215 case QETH_CARD_TYPE_IQD:
2216 return card->info.max_mtu;
2217 case QETH_CARD_TYPE_OSD:
2218 switch (card->info.link_type) {
2219 case QETH_LINK_TYPE_HSTR:
2220 case QETH_LINK_TYPE_LANE_TR:
2221 return 2000;
2222 default:
2223 return card->options.layer2 ? 1500 : 1492;
2224 }
2225 case QETH_CARD_TYPE_OSM:
2226 case QETH_CARD_TYPE_OSX:
2227 return card->options.layer2 ? 1500 : 1492;
2228 default:
2229 return 1500;
2230 }
2231 }
2232
2233 static inline int qeth_get_mtu_outof_framesize(int framesize)
2234 {
2235 switch (framesize) {
2236 case 0x4000:
2237 return 8192;
2238 case 0x6000:
2239 return 16384;
2240 case 0xa000:
2241 return 32768;
2242 case 0xffff:
2243 return 57344;
2244 default:
2245 return 0;
2246 }
2247 }
2248
2249 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2250 {
2251 switch (card->info.type) {
2252 case QETH_CARD_TYPE_OSD:
2253 case QETH_CARD_TYPE_OSM:
2254 case QETH_CARD_TYPE_OSX:
2255 case QETH_CARD_TYPE_IQD:
2256 return ((mtu >= 576) &&
2257 (mtu <= card->info.max_mtu));
2258 case QETH_CARD_TYPE_OSN:
2259 case QETH_CARD_TYPE_UNKNOWN:
2260 default:
2261 return 1;
2262 }
2263 }
2264
2265 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2266 unsigned long data)
2267 {
2268
2269 __u16 mtu, framesize;
2270 __u16 len;
2271 __u8 link_type;
2272 struct qeth_cmd_buffer *iob;
2273
2274 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2275
2276 iob = (struct qeth_cmd_buffer *) data;
2277 memcpy(&card->token.ulp_filter_r,
2278 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2279 QETH_MPC_TOKEN_LENGTH);
2280 if (card->info.type == QETH_CARD_TYPE_IQD) {
2281 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2282 mtu = qeth_get_mtu_outof_framesize(framesize);
2283 if (!mtu) {
2284 iob->rc = -EINVAL;
2285 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2286 return 0;
2287 }
2288 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2289 /* frame size has changed */
2290 if (card->dev &&
2291 ((card->dev->mtu == card->info.initial_mtu) ||
2292 (card->dev->mtu > mtu)))
2293 card->dev->mtu = mtu;
2294 qeth_free_qdio_buffers(card);
2295 }
2296 card->info.initial_mtu = mtu;
2297 card->info.max_mtu = mtu;
2298 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2299 } else {
2300 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2301 iob->data);
2302 card->info.initial_mtu = min(card->info.max_mtu,
2303 qeth_get_initial_mtu_for_card(card));
2304 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2305 }
2306
2307 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2308 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2309 memcpy(&link_type,
2310 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2311 card->info.link_type = link_type;
2312 } else
2313 card->info.link_type = 0;
2314 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2315 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2316 return 0;
2317 }
2318
2319 static int qeth_ulp_enable(struct qeth_card *card)
2320 {
2321 int rc;
2322 char prot_type;
2323 struct qeth_cmd_buffer *iob;
2324
2325 /*FIXME: trace view callbacks*/
2326 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2327
2328 iob = qeth_wait_for_buffer(&card->write);
2329 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2330
2331 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2332 (__u8) card->info.portno;
2333 if (card->options.layer2)
2334 if (card->info.type == QETH_CARD_TYPE_OSN)
2335 prot_type = QETH_PROT_OSN2;
2336 else
2337 prot_type = QETH_PROT_LAYER2;
2338 else
2339 prot_type = QETH_PROT_TCPIP;
2340
2341 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2342 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2343 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2344 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2345 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2346 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2347 qeth_ulp_enable_cb, NULL);
2348 return rc;
2349
2350 }
2351
2352 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2353 unsigned long data)
2354 {
2355 struct qeth_cmd_buffer *iob;
2356
2357 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2358
2359 iob = (struct qeth_cmd_buffer *) data;
2360 memcpy(&card->token.ulp_connection_r,
2361 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2362 QETH_MPC_TOKEN_LENGTH);
2363 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2364 3)) {
2365 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2366 dev_err(&card->gdev->dev, "A connection could not be "
2367 "established because of an OLM limit\n");
2368 iob->rc = -EMLINK;
2369 }
2370 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2371 return 0;
2372 }
2373
2374 static int qeth_ulp_setup(struct qeth_card *card)
2375 {
2376 int rc;
2377 __u16 temp;
2378 struct qeth_cmd_buffer *iob;
2379 struct ccw_dev_id dev_id;
2380
2381 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2382
2383 iob = qeth_wait_for_buffer(&card->write);
2384 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2385
2386 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2387 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2388 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2389 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2390 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2391 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2392
2393 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2394 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2395 temp = (card->info.cula << 8) + card->info.unit_addr2;
2396 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2397 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2398 qeth_ulp_setup_cb, NULL);
2399 return rc;
2400 }
2401
2402 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2403 {
2404 int rc;
2405 struct qeth_qdio_out_buffer *newbuf;
2406
2407 rc = 0;
2408 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2409 if (!newbuf) {
2410 rc = -ENOMEM;
2411 goto out;
2412 }
2413 newbuf->buffer = q->qdio_bufs[bidx];
2414 skb_queue_head_init(&newbuf->skb_list);
2415 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2416 newbuf->q = q;
2417 newbuf->aob = NULL;
2418 newbuf->next_pending = q->bufs[bidx];
2419 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2420 q->bufs[bidx] = newbuf;
2421 if (q->bufstates) {
2422 q->bufstates[bidx].user = newbuf;
2423 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2424 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2425 QETH_CARD_TEXT_(q->card, 2, "%lx",
2426 (long) newbuf->next_pending);
2427 }
2428 out:
2429 return rc;
2430 }
2431
2432 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2433 {
2434 if (!q)
2435 return;
2436
2437 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2438 kfree(q);
2439 }
2440
2441 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2442 {
2443 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2444
2445 if (!q)
2446 return NULL;
2447
2448 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2449 kfree(q);
2450 return NULL;
2451 }
2452 return q;
2453 }
2454
2455 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2456 {
2457 int i, j;
2458
2459 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2460
2461 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2462 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2463 return 0;
2464
2465 QETH_DBF_TEXT(SETUP, 2, "inq");
2466 card->qdio.in_q = qeth_alloc_qdio_queue();
2467 if (!card->qdio.in_q)
2468 goto out_nomem;
2469
2470 /* inbound buffer pool */
2471 if (qeth_alloc_buffer_pool(card))
2472 goto out_freeinq;
2473
2474 /* outbound */
2475 card->qdio.out_qs =
2476 kzalloc(card->qdio.no_out_queues *
2477 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2478 if (!card->qdio.out_qs)
2479 goto out_freepool;
2480 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2481 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2482 if (!card->qdio.out_qs[i])
2483 goto out_freeoutq;
2484 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2485 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2486 card->qdio.out_qs[i]->queue_no = i;
2487 /* give outbound qeth_qdio_buffers their qdio_buffers */
2488 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2489 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2490 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2491 goto out_freeoutqbufs;
2492 }
2493 }
2494
2495 /* completion */
2496 if (qeth_alloc_cq(card))
2497 goto out_freeoutq;
2498
2499 return 0;
2500
2501 out_freeoutqbufs:
2502 while (j > 0) {
2503 --j;
2504 kmem_cache_free(qeth_qdio_outbuf_cache,
2505 card->qdio.out_qs[i]->bufs[j]);
2506 card->qdio.out_qs[i]->bufs[j] = NULL;
2507 }
2508 out_freeoutq:
2509 while (i > 0) {
2510 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2511 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2512 }
2513 kfree(card->qdio.out_qs);
2514 card->qdio.out_qs = NULL;
2515 out_freepool:
2516 qeth_free_buffer_pool(card);
2517 out_freeinq:
2518 qeth_free_qdio_queue(card->qdio.in_q);
2519 card->qdio.in_q = NULL;
2520 out_nomem:
2521 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2522 return -ENOMEM;
2523 }
2524
2525 static void qeth_free_qdio_buffers(struct qeth_card *card)
2526 {
2527 int i, j;
2528
2529 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2530 QETH_QDIO_UNINITIALIZED)
2531 return;
2532
2533 qeth_free_cq(card);
2534 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2535 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2536 if (card->qdio.in_q->bufs[j].rx_skb)
2537 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2538 }
2539 qeth_free_qdio_queue(card->qdio.in_q);
2540 card->qdio.in_q = NULL;
2541 /* inbound buffer pool */
2542 qeth_free_buffer_pool(card);
2543 /* free outbound qdio_qs */
2544 if (card->qdio.out_qs) {
2545 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2546 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2547 qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2548 }
2549 kfree(card->qdio.out_qs);
2550 card->qdio.out_qs = NULL;
2551 }
2552 }
2553
2554 static void qeth_create_qib_param_field(struct qeth_card *card,
2555 char *param_field)
2556 {
2557
2558 param_field[0] = _ascebc['P'];
2559 param_field[1] = _ascebc['C'];
2560 param_field[2] = _ascebc['I'];
2561 param_field[3] = _ascebc['T'];
2562 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2563 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2564 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2565 }
2566
2567 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2568 char *param_field)
2569 {
2570 param_field[16] = _ascebc['B'];
2571 param_field[17] = _ascebc['L'];
2572 param_field[18] = _ascebc['K'];
2573 param_field[19] = _ascebc['T'];
2574 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2575 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2576 *((unsigned int *) (&param_field[28])) =
2577 card->info.blkt.inter_packet_jumbo;
2578 }
2579
2580 static int qeth_qdio_activate(struct qeth_card *card)
2581 {
2582 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2583 return qdio_activate(CARD_DDEV(card));
2584 }
2585
2586 static int qeth_dm_act(struct qeth_card *card)
2587 {
2588 int rc;
2589 struct qeth_cmd_buffer *iob;
2590
2591 QETH_DBF_TEXT(SETUP, 2, "dmact");
2592
2593 iob = qeth_wait_for_buffer(&card->write);
2594 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2595
2596 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2597 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2598 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2599 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2600 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2601 return rc;
2602 }
2603
2604 static int qeth_mpc_initialize(struct qeth_card *card)
2605 {
2606 int rc;
2607
2608 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2609
2610 rc = qeth_issue_next_read(card);
2611 if (rc) {
2612 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2613 return rc;
2614 }
2615 rc = qeth_cm_enable(card);
2616 if (rc) {
2617 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2618 goto out_qdio;
2619 }
2620 rc = qeth_cm_setup(card);
2621 if (rc) {
2622 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2623 goto out_qdio;
2624 }
2625 rc = qeth_ulp_enable(card);
2626 if (rc) {
2627 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2628 goto out_qdio;
2629 }
2630 rc = qeth_ulp_setup(card);
2631 if (rc) {
2632 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2633 goto out_qdio;
2634 }
2635 rc = qeth_alloc_qdio_buffers(card);
2636 if (rc) {
2637 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2638 goto out_qdio;
2639 }
2640 rc = qeth_qdio_establish(card);
2641 if (rc) {
2642 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2643 qeth_free_qdio_buffers(card);
2644 goto out_qdio;
2645 }
2646 rc = qeth_qdio_activate(card);
2647 if (rc) {
2648 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2649 goto out_qdio;
2650 }
2651 rc = qeth_dm_act(card);
2652 if (rc) {
2653 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2654 goto out_qdio;
2655 }
2656
2657 return 0;
2658 out_qdio:
2659 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2660 qdio_free(CARD_DDEV(card));
2661 return rc;
2662 }
2663
2664 void qeth_print_status_message(struct qeth_card *card)
2665 {
2666 switch (card->info.type) {
2667 case QETH_CARD_TYPE_OSD:
2668 case QETH_CARD_TYPE_OSM:
2669 case QETH_CARD_TYPE_OSX:
2670 /* VM will use a non-zero first character
2671 * to indicate a HiperSockets like reporting
2672 * of the level OSA sets the first character to zero
2673 * */
2674 if (!card->info.mcl_level[0]) {
2675 sprintf(card->info.mcl_level, "%02x%02x",
2676 card->info.mcl_level[2],
2677 card->info.mcl_level[3]);
2678 break;
2679 }
2680 /* fallthrough */
2681 case QETH_CARD_TYPE_IQD:
2682 if ((card->info.guestlan) ||
2683 (card->info.mcl_level[0] & 0x80)) {
2684 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2685 card->info.mcl_level[0]];
2686 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2687 card->info.mcl_level[1]];
2688 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2689 card->info.mcl_level[2]];
2690 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2691 card->info.mcl_level[3]];
2692 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2693 }
2694 break;
2695 default:
2696 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2697 }
2698 dev_info(&card->gdev->dev,
2699 "Device is a%s card%s%s%s\nwith link type %s.\n",
2700 qeth_get_cardname(card),
2701 (card->info.mcl_level[0]) ? " (level: " : "",
2702 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2703 (card->info.mcl_level[0]) ? ")" : "",
2704 qeth_get_cardname_short(card));
2705 }
2706 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2707
2708 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2709 {
2710 struct qeth_buffer_pool_entry *entry;
2711
2712 QETH_CARD_TEXT(card, 5, "inwrklst");
2713
2714 list_for_each_entry(entry,
2715 &card->qdio.init_pool.entry_list, init_list) {
2716 qeth_put_buffer_pool_entry(card, entry);
2717 }
2718 }
2719
2720 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2721 struct qeth_card *card)
2722 {
2723 struct list_head *plh;
2724 struct qeth_buffer_pool_entry *entry;
2725 int i, free;
2726 struct page *page;
2727
2728 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2729 return NULL;
2730
2731 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2732 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2733 free = 1;
2734 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2735 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2736 free = 0;
2737 break;
2738 }
2739 }
2740 if (free) {
2741 list_del_init(&entry->list);
2742 return entry;
2743 }
2744 }
2745
2746 /* no free buffer in pool so take first one and swap pages */
2747 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2748 struct qeth_buffer_pool_entry, list);
2749 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2750 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2751 page = alloc_page(GFP_ATOMIC);
2752 if (!page) {
2753 return NULL;
2754 } else {
2755 free_page((unsigned long)entry->elements[i]);
2756 entry->elements[i] = page_address(page);
2757 if (card->options.performance_stats)
2758 card->perf_stats.sg_alloc_page_rx++;
2759 }
2760 }
2761 }
2762 list_del_init(&entry->list);
2763 return entry;
2764 }
2765
2766 static int qeth_init_input_buffer(struct qeth_card *card,
2767 struct qeth_qdio_buffer *buf)
2768 {
2769 struct qeth_buffer_pool_entry *pool_entry;
2770 int i;
2771
2772 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2773 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2774 if (!buf->rx_skb)
2775 return 1;
2776 }
2777
2778 pool_entry = qeth_find_free_buffer_pool_entry(card);
2779 if (!pool_entry)
2780 return 1;
2781
2782 /*
2783 * since the buffer is accessed only from the input_tasklet
2784 * there shouldn't be a need to synchronize; also, since we use
2785 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2786 * buffers
2787 */
2788
2789 buf->pool_entry = pool_entry;
2790 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2791 buf->buffer->element[i].length = PAGE_SIZE;
2792 buf->buffer->element[i].addr = pool_entry->elements[i];
2793 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2794 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2795 else
2796 buf->buffer->element[i].eflags = 0;
2797 buf->buffer->element[i].sflags = 0;
2798 }
2799 return 0;
2800 }
2801
2802 int qeth_init_qdio_queues(struct qeth_card *card)
2803 {
2804 int i, j;
2805 int rc;
2806
2807 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2808
2809 /* inbound queue */
2810 qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2811 QDIO_MAX_BUFFERS_PER_Q);
2812 qeth_initialize_working_pool_list(card);
2813 /*give only as many buffers to hardware as we have buffer pool entries*/
2814 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2815 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2816 card->qdio.in_q->next_buf_to_init =
2817 card->qdio.in_buf_pool.buf_count - 1;
2818 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2819 card->qdio.in_buf_pool.buf_count - 1);
2820 if (rc) {
2821 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2822 return rc;
2823 }
2824
2825 /* completion */
2826 rc = qeth_cq_init(card);
2827 if (rc) {
2828 return rc;
2829 }
2830
2831 /* outbound queue */
2832 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2833 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2834 QDIO_MAX_BUFFERS_PER_Q);
2835 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2836 qeth_clear_output_buffer(card->qdio.out_qs[i],
2837 card->qdio.out_qs[i]->bufs[j],
2838 QETH_QDIO_BUF_EMPTY);
2839 }
2840 card->qdio.out_qs[i]->card = card;
2841 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2842 card->qdio.out_qs[i]->do_pack = 0;
2843 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2844 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2845 atomic_set(&card->qdio.out_qs[i]->state,
2846 QETH_OUT_Q_UNLOCKED);
2847 }
2848 return 0;
2849 }
2850 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2851
2852 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2853 {
2854 switch (link_type) {
2855 case QETH_LINK_TYPE_HSTR:
2856 return 2;
2857 default:
2858 return 1;
2859 }
2860 }
2861
2862 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2863 struct qeth_ipa_cmd *cmd, __u8 command,
2864 enum qeth_prot_versions prot)
2865 {
2866 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2867 cmd->hdr.command = command;
2868 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2869 cmd->hdr.seqno = card->seqno.ipa;
2870 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2871 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2872 if (card->options.layer2)
2873 cmd->hdr.prim_version_no = 2;
2874 else
2875 cmd->hdr.prim_version_no = 1;
2876 cmd->hdr.param_count = 1;
2877 cmd->hdr.prot_version = prot;
2878 cmd->hdr.ipa_supported = 0;
2879 cmd->hdr.ipa_enabled = 0;
2880 }
2881
2882 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2883 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2884 {
2885 struct qeth_cmd_buffer *iob;
2886 struct qeth_ipa_cmd *cmd;
2887
2888 iob = qeth_get_buffer(&card->write);
2889 if (iob) {
2890 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2891 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2892 } else {
2893 dev_warn(&card->gdev->dev,
2894 "The qeth driver ran out of channel command buffers\n");
2895 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2896 dev_name(&card->gdev->dev));
2897 }
2898
2899 return iob;
2900 }
2901 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2902
2903 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2904 char prot_type)
2905 {
2906 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2907 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2908 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2909 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2910 }
2911 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2912
2913 /**
2914 * qeth_send_ipa_cmd() - send an IPA command
2915 *
2916 * See qeth_send_control_data() for explanation of the arguments.
2917 */
2918
2919 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2920 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2921 unsigned long),
2922 void *reply_param)
2923 {
2924 int rc;
2925 char prot_type;
2926
2927 QETH_CARD_TEXT(card, 4, "sendipa");
2928
2929 if (card->options.layer2)
2930 if (card->info.type == QETH_CARD_TYPE_OSN)
2931 prot_type = QETH_PROT_OSN2;
2932 else
2933 prot_type = QETH_PROT_LAYER2;
2934 else
2935 prot_type = QETH_PROT_TCPIP;
2936 qeth_prepare_ipa_cmd(card, iob, prot_type);
2937 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2938 iob, reply_cb, reply_param);
2939 if (rc == -ETIME) {
2940 qeth_clear_ipacmd_list(card);
2941 qeth_schedule_recovery(card);
2942 }
2943 return rc;
2944 }
2945 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2946
2947 static int qeth_send_startlan(struct qeth_card *card)
2948 {
2949 int rc;
2950 struct qeth_cmd_buffer *iob;
2951
2952 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2953
2954 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2955 if (!iob)
2956 return -ENOMEM;
2957 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2958 return rc;
2959 }
2960
2961 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2962 struct qeth_reply *reply, unsigned long data)
2963 {
2964 struct qeth_ipa_cmd *cmd;
2965
2966 QETH_CARD_TEXT(card, 4, "defadpcb");
2967
2968 cmd = (struct qeth_ipa_cmd *) data;
2969 if (cmd->hdr.return_code == 0)
2970 cmd->hdr.return_code =
2971 cmd->data.setadapterparms.hdr.return_code;
2972 return 0;
2973 }
2974
2975 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2976 struct qeth_reply *reply, unsigned long data)
2977 {
2978 struct qeth_ipa_cmd *cmd;
2979
2980 QETH_CARD_TEXT(card, 3, "quyadpcb");
2981
2982 cmd = (struct qeth_ipa_cmd *) data;
2983 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2984 card->info.link_type =
2985 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2986 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2987 }
2988 card->options.adp.supported_funcs =
2989 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2990 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2991 }
2992
2993 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2994 __u32 command, __u32 cmdlen)
2995 {
2996 struct qeth_cmd_buffer *iob;
2997 struct qeth_ipa_cmd *cmd;
2998
2999 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3000 QETH_PROT_IPV4);
3001 if (iob) {
3002 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3003 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3004 cmd->data.setadapterparms.hdr.command_code = command;
3005 cmd->data.setadapterparms.hdr.used_total = 1;
3006 cmd->data.setadapterparms.hdr.seq_no = 1;
3007 }
3008
3009 return iob;
3010 }
3011
3012 int qeth_query_setadapterparms(struct qeth_card *card)
3013 {
3014 int rc;
3015 struct qeth_cmd_buffer *iob;
3016
3017 QETH_CARD_TEXT(card, 3, "queryadp");
3018 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3019 sizeof(struct qeth_ipacmd_setadpparms));
3020 if (!iob)
3021 return -ENOMEM;
3022 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3023 return rc;
3024 }
3025 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3026
3027 static int qeth_query_ipassists_cb(struct qeth_card *card,
3028 struct qeth_reply *reply, unsigned long data)
3029 {
3030 struct qeth_ipa_cmd *cmd;
3031
3032 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3033
3034 cmd = (struct qeth_ipa_cmd *) data;
3035
3036 switch (cmd->hdr.return_code) {
3037 case IPA_RC_NOTSUPP:
3038 case IPA_RC_L2_UNSUPPORTED_CMD:
3039 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3040 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3041 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3042 return -0;
3043 default:
3044 if (cmd->hdr.return_code) {
3045 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3046 "rc=%d\n",
3047 dev_name(&card->gdev->dev),
3048 cmd->hdr.return_code);
3049 return 0;
3050 }
3051 }
3052
3053 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3054 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3055 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3056 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3057 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3058 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3059 } else
3060 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3061 "\n", dev_name(&card->gdev->dev));
3062 return 0;
3063 }
3064
3065 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3066 {
3067 int rc;
3068 struct qeth_cmd_buffer *iob;
3069
3070 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3071 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3072 if (!iob)
3073 return -ENOMEM;
3074 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3075 return rc;
3076 }
3077 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3078
3079 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3080 struct qeth_reply *reply, unsigned long data)
3081 {
3082 struct qeth_ipa_cmd *cmd;
3083 struct qeth_switch_info *sw_info;
3084 struct qeth_query_switch_attributes *attrs;
3085
3086 QETH_CARD_TEXT(card, 2, "qswiatcb");
3087 cmd = (struct qeth_ipa_cmd *) data;
3088 sw_info = (struct qeth_switch_info *)reply->param;
3089 if (cmd->data.setadapterparms.hdr.return_code == 0) {
3090 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3091 sw_info->capabilities = attrs->capabilities;
3092 sw_info->settings = attrs->settings;
3093 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3094 sw_info->settings);
3095 }
3096 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3097
3098 return 0;
3099 }
3100
3101 int qeth_query_switch_attributes(struct qeth_card *card,
3102 struct qeth_switch_info *sw_info)
3103 {
3104 struct qeth_cmd_buffer *iob;
3105
3106 QETH_CARD_TEXT(card, 2, "qswiattr");
3107 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3108 return -EOPNOTSUPP;
3109 if (!netif_carrier_ok(card->dev))
3110 return -ENOMEDIUM;
3111 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3112 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3113 if (!iob)
3114 return -ENOMEM;
3115 return qeth_send_ipa_cmd(card, iob,
3116 qeth_query_switch_attributes_cb, sw_info);
3117 }
3118 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3119
3120 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3121 struct qeth_reply *reply, unsigned long data)
3122 {
3123 struct qeth_ipa_cmd *cmd;
3124 __u16 rc;
3125
3126 cmd = (struct qeth_ipa_cmd *)data;
3127 rc = cmd->hdr.return_code;
3128 if (rc)
3129 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3130 else
3131 card->info.diagass_support = cmd->data.diagass.ext;
3132 return 0;
3133 }
3134
3135 static int qeth_query_setdiagass(struct qeth_card *card)
3136 {
3137 struct qeth_cmd_buffer *iob;
3138 struct qeth_ipa_cmd *cmd;
3139
3140 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3141 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3142 if (!iob)
3143 return -ENOMEM;
3144 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3145 cmd->data.diagass.subcmd_len = 16;
3146 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3147 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3148 }
3149
3150 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3151 {
3152 unsigned long info = get_zeroed_page(GFP_KERNEL);
3153 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3154 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3155 struct ccw_dev_id ccwid;
3156 int level;
3157
3158 tid->chpid = card->info.chpid;
3159 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3160 tid->ssid = ccwid.ssid;
3161 tid->devno = ccwid.devno;
3162 if (!info)
3163 return;
3164 level = stsi(NULL, 0, 0, 0);
3165 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3166 tid->lparnr = info222->lpar_number;
3167 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3168 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3169 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3170 }
3171 free_page(info);
3172 return;
3173 }
3174
3175 static int qeth_hw_trap_cb(struct qeth_card *card,
3176 struct qeth_reply *reply, unsigned long data)
3177 {
3178 struct qeth_ipa_cmd *cmd;
3179 __u16 rc;
3180
3181 cmd = (struct qeth_ipa_cmd *)data;
3182 rc = cmd->hdr.return_code;
3183 if (rc)
3184 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3185 return 0;
3186 }
3187
3188 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3189 {
3190 struct qeth_cmd_buffer *iob;
3191 struct qeth_ipa_cmd *cmd;
3192
3193 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3194 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3195 if (!iob)
3196 return -ENOMEM;
3197 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3198 cmd->data.diagass.subcmd_len = 80;
3199 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3200 cmd->data.diagass.type = 1;
3201 cmd->data.diagass.action = action;
3202 switch (action) {
3203 case QETH_DIAGS_TRAP_ARM:
3204 cmd->data.diagass.options = 0x0003;
3205 cmd->data.diagass.ext = 0x00010000 +
3206 sizeof(struct qeth_trap_id);
3207 qeth_get_trap_id(card,
3208 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3209 break;
3210 case QETH_DIAGS_TRAP_DISARM:
3211 cmd->data.diagass.options = 0x0001;
3212 break;
3213 case QETH_DIAGS_TRAP_CAPTURE:
3214 break;
3215 }
3216 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3217 }
3218 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3219
3220 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3221 unsigned int qdio_error, const char *dbftext)
3222 {
3223 if (qdio_error) {
3224 QETH_CARD_TEXT(card, 2, dbftext);
3225 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3226 buf->element[15].sflags);
3227 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3228 buf->element[14].sflags);
3229 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3230 if ((buf->element[15].sflags) == 0x12) {
3231 card->stats.rx_dropped++;
3232 return 0;
3233 } else
3234 return 1;
3235 }
3236 return 0;
3237 }
3238 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3239
3240 static void qeth_buffer_reclaim_work(struct work_struct *work)
3241 {
3242 struct qeth_card *card = container_of(work, struct qeth_card,
3243 buffer_reclaim_work.work);
3244
3245 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3246 qeth_queue_input_buffer(card, card->reclaim_index);
3247 }
3248
3249 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3250 {
3251 struct qeth_qdio_q *queue = card->qdio.in_q;
3252 struct list_head *lh;
3253 int count;
3254 int i;
3255 int rc;
3256 int newcount = 0;
3257
3258 count = (index < queue->next_buf_to_init)?
3259 card->qdio.in_buf_pool.buf_count -
3260 (queue->next_buf_to_init - index) :
3261 card->qdio.in_buf_pool.buf_count -
3262 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3263 /* only requeue at a certain threshold to avoid SIGAs */
3264 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3265 for (i = queue->next_buf_to_init;
3266 i < queue->next_buf_to_init + count; ++i) {
3267 if (qeth_init_input_buffer(card,
3268 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3269 break;
3270 } else {
3271 newcount++;
3272 }
3273 }
3274
3275 if (newcount < count) {
3276 /* we are in memory shortage so we switch back to
3277 traditional skb allocation and drop packages */
3278 atomic_set(&card->force_alloc_skb, 3);
3279 count = newcount;
3280 } else {
3281 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3282 }
3283
3284 if (!count) {
3285 i = 0;
3286 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3287 i++;
3288 if (i == card->qdio.in_buf_pool.buf_count) {
3289 QETH_CARD_TEXT(card, 2, "qsarbw");
3290 card->reclaim_index = index;
3291 schedule_delayed_work(
3292 &card->buffer_reclaim_work,
3293 QETH_RECLAIM_WORK_TIME);
3294 }
3295 return;
3296 }
3297
3298 /*
3299 * according to old code it should be avoided to requeue all
3300 * 128 buffers in order to benefit from PCI avoidance.
3301 * this function keeps at least one buffer (the buffer at
3302 * 'index') un-requeued -> this buffer is the first buffer that
3303 * will be requeued the next time
3304 */
3305 if (card->options.performance_stats) {
3306 card->perf_stats.inbound_do_qdio_cnt++;
3307 card->perf_stats.inbound_do_qdio_start_time =
3308 qeth_get_micros();
3309 }
3310 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3311 queue->next_buf_to_init, count);
3312 if (card->options.performance_stats)
3313 card->perf_stats.inbound_do_qdio_time +=
3314 qeth_get_micros() -
3315 card->perf_stats.inbound_do_qdio_start_time;
3316 if (rc) {
3317 QETH_CARD_TEXT(card, 2, "qinberr");
3318 }
3319 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3320 QDIO_MAX_BUFFERS_PER_Q;
3321 }
3322 }
3323 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3324
3325 static int qeth_handle_send_error(struct qeth_card *card,
3326 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3327 {
3328 int sbalf15 = buffer->buffer->element[15].sflags;
3329
3330 QETH_CARD_TEXT(card, 6, "hdsnderr");
3331 if (card->info.type == QETH_CARD_TYPE_IQD) {
3332 if (sbalf15 == 0) {
3333 qdio_err = 0;
3334 } else {
3335 qdio_err = 1;
3336 }
3337 }
3338 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3339
3340 if (!qdio_err)
3341 return QETH_SEND_ERROR_NONE;
3342
3343 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3344 return QETH_SEND_ERROR_RETRY;
3345
3346 QETH_CARD_TEXT(card, 1, "lnkfail");
3347 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3348 (u16)qdio_err, (u8)sbalf15);
3349 return QETH_SEND_ERROR_LINK_FAILURE;
3350 }
3351
3352 /*
3353 * Switched to packing state if the number of used buffers on a queue
3354 * reaches a certain limit.
3355 */
3356 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3357 {
3358 if (!queue->do_pack) {
3359 if (atomic_read(&queue->used_buffers)
3360 >= QETH_HIGH_WATERMARK_PACK){
3361 /* switch non-PACKING -> PACKING */
3362 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3363 if (queue->card->options.performance_stats)
3364 queue->card->perf_stats.sc_dp_p++;
3365 queue->do_pack = 1;
3366 }
3367 }
3368 }
3369
3370 /*
3371 * Switches from packing to non-packing mode. If there is a packing
3372 * buffer on the queue this buffer will be prepared to be flushed.
3373 * In that case 1 is returned to inform the caller. If no buffer
3374 * has to be flushed, zero is returned.
3375 */
3376 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3377 {
3378 struct qeth_qdio_out_buffer *buffer;
3379 int flush_count = 0;
3380
3381 if (queue->do_pack) {
3382 if (atomic_read(&queue->used_buffers)
3383 <= QETH_LOW_WATERMARK_PACK) {
3384 /* switch PACKING -> non-PACKING */
3385 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3386 if (queue->card->options.performance_stats)
3387 queue->card->perf_stats.sc_p_dp++;
3388 queue->do_pack = 0;
3389 /* flush packing buffers */
3390 buffer = queue->bufs[queue->next_buf_to_fill];
3391 if ((atomic_read(&buffer->state) ==
3392 QETH_QDIO_BUF_EMPTY) &&
3393 (buffer->next_element_to_fill > 0)) {
3394 atomic_set(&buffer->state,
3395 QETH_QDIO_BUF_PRIMED);
3396 flush_count++;
3397 queue->next_buf_to_fill =
3398 (queue->next_buf_to_fill + 1) %
3399 QDIO_MAX_BUFFERS_PER_Q;
3400 }
3401 }
3402 }
3403 return flush_count;
3404 }
3405
3406
3407 /*
3408 * Called to flush a packing buffer if no more pci flags are on the queue.
3409 * Checks if there is a packing buffer and prepares it to be flushed.
3410 * In that case returns 1, otherwise zero.
3411 */
3412 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3413 {
3414 struct qeth_qdio_out_buffer *buffer;
3415
3416 buffer = queue->bufs[queue->next_buf_to_fill];
3417 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3418 (buffer->next_element_to_fill > 0)) {
3419 /* it's a packing buffer */
3420 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3421 queue->next_buf_to_fill =
3422 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3423 return 1;
3424 }
3425 return 0;
3426 }
3427
3428 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3429 int count)
3430 {
3431 struct qeth_qdio_out_buffer *buf;
3432 int rc;
3433 int i;
3434 unsigned int qdio_flags;
3435
3436 for (i = index; i < index + count; ++i) {
3437 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3438 buf = queue->bufs[bidx];
3439 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3440 SBAL_EFLAGS_LAST_ENTRY;
3441
3442 if (queue->bufstates)
3443 queue->bufstates[bidx].user = buf;
3444
3445 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3446 continue;
3447
3448 if (!queue->do_pack) {
3449 if ((atomic_read(&queue->used_buffers) >=
3450 (QETH_HIGH_WATERMARK_PACK -
3451 QETH_WATERMARK_PACK_FUZZ)) &&
3452 !atomic_read(&queue->set_pci_flags_count)) {
3453 /* it's likely that we'll go to packing
3454 * mode soon */
3455 atomic_inc(&queue->set_pci_flags_count);
3456 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3457 }
3458 } else {
3459 if (!atomic_read(&queue->set_pci_flags_count)) {
3460 /*
3461 * there's no outstanding PCI any more, so we
3462 * have to request a PCI to be sure the the PCI
3463 * will wake at some time in the future then we
3464 * can flush packed buffers that might still be
3465 * hanging around, which can happen if no
3466 * further send was requested by the stack
3467 */
3468 atomic_inc(&queue->set_pci_flags_count);
3469 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3470 }
3471 }
3472 }
3473
3474 netif_trans_update(queue->card->dev);
3475 if (queue->card->options.performance_stats) {
3476 queue->card->perf_stats.outbound_do_qdio_cnt++;
3477 queue->card->perf_stats.outbound_do_qdio_start_time =
3478 qeth_get_micros();
3479 }
3480 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3481 if (atomic_read(&queue->set_pci_flags_count))
3482 qdio_flags |= QDIO_FLAG_PCI_OUT;
3483 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3484 queue->queue_no, index, count);
3485 if (queue->card->options.performance_stats)
3486 queue->card->perf_stats.outbound_do_qdio_time +=
3487 qeth_get_micros() -
3488 queue->card->perf_stats.outbound_do_qdio_start_time;
3489 atomic_add(count, &queue->used_buffers);
3490 if (rc) {
3491 queue->card->stats.tx_errors += count;
3492 /* ignore temporary SIGA errors without busy condition */
3493 if (rc == -ENOBUFS)
3494 return;
3495 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3496 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3497 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3498 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3499 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3500
3501 /* this must not happen under normal circumstances. if it
3502 * happens something is really wrong -> recover */
3503 qeth_schedule_recovery(queue->card);
3504 return;
3505 }
3506 if (queue->card->options.performance_stats)
3507 queue->card->perf_stats.bufs_sent += count;
3508 }
3509
3510 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3511 {
3512 int index;
3513 int flush_cnt = 0;
3514 int q_was_packing = 0;
3515
3516 /*
3517 * check if weed have to switch to non-packing mode or if
3518 * we have to get a pci flag out on the queue
3519 */
3520 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3521 !atomic_read(&queue->set_pci_flags_count)) {
3522 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3523 QETH_OUT_Q_UNLOCKED) {
3524 /*
3525 * If we get in here, there was no action in
3526 * do_send_packet. So, we check if there is a
3527 * packing buffer to be flushed here.
3528 */
3529 netif_stop_queue(queue->card->dev);
3530 index = queue->next_buf_to_fill;
3531 q_was_packing = queue->do_pack;
3532 /* queue->do_pack may change */
3533 barrier();
3534 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3535 if (!flush_cnt &&
3536 !atomic_read(&queue->set_pci_flags_count))
3537 flush_cnt +=
3538 qeth_flush_buffers_on_no_pci(queue);
3539 if (queue->card->options.performance_stats &&
3540 q_was_packing)
3541 queue->card->perf_stats.bufs_sent_pack +=
3542 flush_cnt;
3543 if (flush_cnt)
3544 qeth_flush_buffers(queue, index, flush_cnt);
3545 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3546 }
3547 }
3548 }
3549
3550 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3551 unsigned long card_ptr)
3552 {
3553 struct qeth_card *card = (struct qeth_card *)card_ptr;
3554
3555 if (card->dev && (card->dev->flags & IFF_UP))
3556 napi_schedule(&card->napi);
3557 }
3558 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3559
3560 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3561 {
3562 int rc;
3563
3564 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3565 rc = -1;
3566 goto out;
3567 } else {
3568 if (card->options.cq == cq) {
3569 rc = 0;
3570 goto out;
3571 }
3572
3573 if (card->state != CARD_STATE_DOWN &&
3574 card->state != CARD_STATE_RECOVER) {
3575 rc = -1;
3576 goto out;
3577 }
3578
3579 qeth_free_qdio_buffers(card);
3580 card->options.cq = cq;
3581 rc = 0;
3582 }
3583 out:
3584 return rc;
3585
3586 }
3587 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3588
3589
3590 static void qeth_qdio_cq_handler(struct qeth_card *card,
3591 unsigned int qdio_err,
3592 unsigned int queue, int first_element, int count) {
3593 struct qeth_qdio_q *cq = card->qdio.c_q;
3594 int i;
3595 int rc;
3596
3597 if (!qeth_is_cq(card, queue))
3598 goto out;
3599
3600 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3601 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3602 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3603
3604 if (qdio_err) {
3605 netif_stop_queue(card->dev);
3606 qeth_schedule_recovery(card);
3607 goto out;
3608 }
3609
3610 if (card->options.performance_stats) {
3611 card->perf_stats.cq_cnt++;
3612 card->perf_stats.cq_start_time = qeth_get_micros();
3613 }
3614
3615 for (i = first_element; i < first_element + count; ++i) {
3616 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3617 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3618 int e;
3619
3620 e = 0;
3621 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3622 buffer->element[e].addr) {
3623 unsigned long phys_aob_addr;
3624
3625 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3626 qeth_qdio_handle_aob(card, phys_aob_addr);
3627 buffer->element[e].addr = NULL;
3628 buffer->element[e].eflags = 0;
3629 buffer->element[e].sflags = 0;
3630 buffer->element[e].length = 0;
3631
3632 ++e;
3633 }
3634
3635 buffer->element[15].eflags = 0;
3636 buffer->element[15].sflags = 0;
3637 }
3638 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3639 card->qdio.c_q->next_buf_to_init,
3640 count);
3641 if (rc) {
3642 dev_warn(&card->gdev->dev,
3643 "QDIO reported an error, rc=%i\n", rc);
3644 QETH_CARD_TEXT(card, 2, "qcqherr");
3645 }
3646 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3647 + count) % QDIO_MAX_BUFFERS_PER_Q;
3648
3649 netif_wake_queue(card->dev);
3650
3651 if (card->options.performance_stats) {
3652 int delta_t = qeth_get_micros();
3653 delta_t -= card->perf_stats.cq_start_time;
3654 card->perf_stats.cq_time += delta_t;
3655 }
3656 out:
3657 return;
3658 }
3659
3660 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3661 unsigned int queue, int first_elem, int count,
3662 unsigned long card_ptr)
3663 {
3664 struct qeth_card *card = (struct qeth_card *)card_ptr;
3665
3666 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3667 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3668
3669 if (qeth_is_cq(card, queue))
3670 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3671 else if (qdio_err)
3672 qeth_schedule_recovery(card);
3673
3674
3675 }
3676 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3677
3678 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3679 unsigned int qdio_error, int __queue, int first_element,
3680 int count, unsigned long card_ptr)
3681 {
3682 struct qeth_card *card = (struct qeth_card *) card_ptr;
3683 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3684 struct qeth_qdio_out_buffer *buffer;
3685 int i;
3686
3687 QETH_CARD_TEXT(card, 6, "qdouhdl");
3688 if (qdio_error & QDIO_ERROR_FATAL) {
3689 QETH_CARD_TEXT(card, 2, "achkcond");
3690 netif_stop_queue(card->dev);
3691 qeth_schedule_recovery(card);
3692 return;
3693 }
3694 if (card->options.performance_stats) {
3695 card->perf_stats.outbound_handler_cnt++;
3696 card->perf_stats.outbound_handler_start_time =
3697 qeth_get_micros();
3698 }
3699 for (i = first_element; i < (first_element + count); ++i) {
3700 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3701 buffer = queue->bufs[bidx];
3702 qeth_handle_send_error(card, buffer, qdio_error);
3703
3704 if (queue->bufstates &&
3705 (queue->bufstates[bidx].flags &
3706 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3707 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3708
3709 if (atomic_cmpxchg(&buffer->state,
3710 QETH_QDIO_BUF_PRIMED,
3711 QETH_QDIO_BUF_PENDING) ==
3712 QETH_QDIO_BUF_PRIMED) {
3713 qeth_notify_skbs(queue, buffer,
3714 TX_NOTIFY_PENDING);
3715 }
3716 buffer->aob = queue->bufstates[bidx].aob;
3717 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3718 QETH_CARD_TEXT(queue->card, 5, "aob");
3719 QETH_CARD_TEXT_(queue->card, 5, "%lx",
3720 virt_to_phys(buffer->aob));
3721 if (qeth_init_qdio_out_buf(queue, bidx)) {
3722 QETH_CARD_TEXT(card, 2, "outofbuf");
3723 qeth_schedule_recovery(card);
3724 }
3725 } else {
3726 if (card->options.cq == QETH_CQ_ENABLED) {
3727 enum iucv_tx_notify n;
3728
3729 n = qeth_compute_cq_notification(
3730 buffer->buffer->element[15].sflags, 0);
3731 qeth_notify_skbs(queue, buffer, n);
3732 }
3733
3734 qeth_clear_output_buffer(queue, buffer,
3735 QETH_QDIO_BUF_EMPTY);
3736 }
3737 qeth_cleanup_handled_pending(queue, bidx, 0);
3738 }
3739 atomic_sub(count, &queue->used_buffers);
3740 /* check if we need to do something on this outbound queue */
3741 if (card->info.type != QETH_CARD_TYPE_IQD)
3742 qeth_check_outbound_queue(queue);
3743
3744 netif_wake_queue(queue->card->dev);
3745 if (card->options.performance_stats)
3746 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3747 card->perf_stats.outbound_handler_start_time;
3748 }
3749 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3750
3751 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3752 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3753 {
3754 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3755 return 2;
3756 return queue_num;
3757 }
3758
3759 /**
3760 * Note: Function assumes that we have 4 outbound queues.
3761 */
3762 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3763 int ipv, int cast_type)
3764 {
3765 __be16 *tci;
3766 u8 tos;
3767
3768 if (cast_type && card->info.is_multicast_different)
3769 return card->info.is_multicast_different &
3770 (card->qdio.no_out_queues - 1);
3771
3772 switch (card->qdio.do_prio_queueing) {
3773 case QETH_PRIO_Q_ING_TOS:
3774 case QETH_PRIO_Q_ING_PREC:
3775 switch (ipv) {
3776 case 4:
3777 tos = ipv4_get_dsfield(ip_hdr(skb));
3778 break;
3779 case 6:
3780 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3781 break;
3782 default:
3783 return card->qdio.default_out_queue;
3784 }
3785 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3786 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3787 if (tos & IPTOS_MINCOST)
3788 return qeth_cut_iqd_prio(card, 3);
3789 if (tos & IPTOS_RELIABILITY)
3790 return 2;
3791 if (tos & IPTOS_THROUGHPUT)
3792 return 1;
3793 if (tos & IPTOS_LOWDELAY)
3794 return 0;
3795 break;
3796 case QETH_PRIO_Q_ING_SKB:
3797 if (skb->priority > 5)
3798 return 0;
3799 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3800 case QETH_PRIO_Q_ING_VLAN:
3801 tci = &((struct ethhdr *)skb->data)->h_proto;
3802 if (*tci == ETH_P_8021Q)
3803 return qeth_cut_iqd_prio(card, ~*(tci + 1) >>
3804 (VLAN_PRIO_SHIFT + 1) & 3);
3805 break;
3806 default:
3807 break;
3808 }
3809 return card->qdio.default_out_queue;
3810 }
3811 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3812
3813 /**
3814 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3815 * @skb: SKB address
3816 *
3817 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3818 * fragmented part of the SKB. Returns zero for linear SKB.
3819 */
3820 int qeth_get_elements_for_frags(struct sk_buff *skb)
3821 {
3822 int cnt, elements = 0;
3823
3824 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3825 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3826
3827 elements += qeth_get_elements_for_range(
3828 (addr_t)skb_frag_address(frag),
3829 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3830 }
3831 return elements;
3832 }
3833 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3834
3835 /**
3836 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags.
3837 * @card: qeth card structure, to check max. elems.
3838 * @skb: SKB address
3839 * @extra_elems: extra elems needed, to check against max.
3840 *
3841 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3842 * skb data, including linear part and fragments. Checks if the result plus
3843 * extra_elems fits under the limit for the card. Returns 0 if it does not.
3844 * Note: extra_elems is not included in the returned result.
3845 */
3846 int qeth_get_elements_no(struct qeth_card *card,
3847 struct sk_buff *skb, int extra_elems)
3848 {
3849 int elements = qeth_get_elements_for_range(
3850 (addr_t)skb->data,
3851 (addr_t)skb->data + skb_headlen(skb)) +
3852 qeth_get_elements_for_frags(skb);
3853
3854 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3855 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3856 "(Number=%d / Length=%d). Discarded.\n",
3857 elements + extra_elems, skb->len);
3858 return 0;
3859 }
3860 return elements;
3861 }
3862 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3863
3864 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3865 {
3866 int hroom, inpage, rest;
3867
3868 if (((unsigned long)skb->data & PAGE_MASK) !=
3869 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3870 hroom = skb_headroom(skb);
3871 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3872 rest = len - inpage;
3873 if (rest > hroom)
3874 return 1;
3875 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3876 skb->data -= rest;
3877 skb->tail -= rest;
3878 *hdr = (struct qeth_hdr *)skb->data;
3879 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3880 }
3881 return 0;
3882 }
3883 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3884
3885 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3886 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3887 int offset)
3888 {
3889 int length = skb_headlen(skb);
3890 int length_here;
3891 int element;
3892 char *data;
3893 int first_lap, cnt;
3894 struct skb_frag_struct *frag;
3895
3896 element = *next_element_to_fill;
3897 data = skb->data;
3898 first_lap = (is_tso == 0 ? 1 : 0);
3899
3900 if (offset >= 0) {
3901 data = skb->data + offset;
3902 length -= offset;
3903 first_lap = 0;
3904 }
3905
3906 while (length > 0) {
3907 /* length_here is the remaining amount of data in this page */
3908 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3909 if (length < length_here)
3910 length_here = length;
3911
3912 buffer->element[element].addr = data;
3913 buffer->element[element].length = length_here;
3914 length -= length_here;
3915 if (!length) {
3916 if (first_lap)
3917 if (skb_shinfo(skb)->nr_frags)
3918 buffer->element[element].eflags =
3919 SBAL_EFLAGS_FIRST_FRAG;
3920 else
3921 buffer->element[element].eflags = 0;
3922 else
3923 buffer->element[element].eflags =
3924 SBAL_EFLAGS_MIDDLE_FRAG;
3925 } else {
3926 if (first_lap)
3927 buffer->element[element].eflags =
3928 SBAL_EFLAGS_FIRST_FRAG;
3929 else
3930 buffer->element[element].eflags =
3931 SBAL_EFLAGS_MIDDLE_FRAG;
3932 }
3933 data += length_here;
3934 element++;
3935 first_lap = 0;
3936 }
3937
3938 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3939 frag = &skb_shinfo(skb)->frags[cnt];
3940 data = (char *)page_to_phys(skb_frag_page(frag)) +
3941 frag->page_offset;
3942 length = frag->size;
3943 while (length > 0) {
3944 length_here = PAGE_SIZE -
3945 ((unsigned long) data % PAGE_SIZE);
3946 if (length < length_here)
3947 length_here = length;
3948
3949 buffer->element[element].addr = data;
3950 buffer->element[element].length = length_here;
3951 buffer->element[element].eflags =
3952 SBAL_EFLAGS_MIDDLE_FRAG;
3953 length -= length_here;
3954 data += length_here;
3955 element++;
3956 }
3957 }
3958
3959 if (buffer->element[element - 1].eflags)
3960 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3961 *next_element_to_fill = element;
3962 }
3963
3964 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3965 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3966 struct qeth_hdr *hdr, int offset, int hd_len)
3967 {
3968 struct qdio_buffer *buffer;
3969 int flush_cnt = 0, hdr_len, large_send = 0;
3970
3971 buffer = buf->buffer;
3972 atomic_inc(&skb->users);
3973 skb_queue_tail(&buf->skb_list, skb);
3974
3975 /*check first on TSO ....*/
3976 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3977 int element = buf->next_element_to_fill;
3978
3979 hdr_len = sizeof(struct qeth_hdr_tso) +
3980 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3981 /*fill first buffer entry only with header information */
3982 buffer->element[element].addr = skb->data;
3983 buffer->element[element].length = hdr_len;
3984 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3985 buf->next_element_to_fill++;
3986 skb->data += hdr_len;
3987 skb->len -= hdr_len;
3988 large_send = 1;
3989 }
3990
3991 if (offset >= 0) {
3992 int element = buf->next_element_to_fill;
3993 buffer->element[element].addr = hdr;
3994 buffer->element[element].length = sizeof(struct qeth_hdr) +
3995 hd_len;
3996 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3997 buf->is_header[element] = 1;
3998 buf->next_element_to_fill++;
3999 }
4000
4001 __qeth_fill_buffer(skb, buffer, large_send,
4002 (int *)&buf->next_element_to_fill, offset);
4003
4004 if (!queue->do_pack) {
4005 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4006 /* set state to PRIMED -> will be flushed */
4007 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4008 flush_cnt = 1;
4009 } else {
4010 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4011 if (queue->card->options.performance_stats)
4012 queue->card->perf_stats.skbs_sent_pack++;
4013 if (buf->next_element_to_fill >=
4014 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4015 /*
4016 * packed buffer if full -> set state PRIMED
4017 * -> will be flushed
4018 */
4019 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4020 flush_cnt = 1;
4021 }
4022 }
4023 return flush_cnt;
4024 }
4025
4026 int qeth_do_send_packet_fast(struct qeth_card *card,
4027 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4028 struct qeth_hdr *hdr, int elements_needed,
4029 int offset, int hd_len)
4030 {
4031 struct qeth_qdio_out_buffer *buffer;
4032 int index;
4033
4034 /* spin until we get the queue ... */
4035 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4036 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4037 /* ... now we've got the queue */
4038 index = queue->next_buf_to_fill;
4039 buffer = queue->bufs[queue->next_buf_to_fill];
4040 /*
4041 * check if buffer is empty to make sure that we do not 'overtake'
4042 * ourselves and try to fill a buffer that is already primed
4043 */
4044 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4045 goto out;
4046 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4047 QDIO_MAX_BUFFERS_PER_Q;
4048 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4049 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4050 qeth_flush_buffers(queue, index, 1);
4051 return 0;
4052 out:
4053 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4054 return -EBUSY;
4055 }
4056 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4057
4058 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4059 struct sk_buff *skb, struct qeth_hdr *hdr,
4060 int elements_needed)
4061 {
4062 struct qeth_qdio_out_buffer *buffer;
4063 int start_index;
4064 int flush_count = 0;
4065 int do_pack = 0;
4066 int tmp;
4067 int rc = 0;
4068
4069 /* spin until we get the queue ... */
4070 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4071 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4072 start_index = queue->next_buf_to_fill;
4073 buffer = queue->bufs[queue->next_buf_to_fill];
4074 /*
4075 * check if buffer is empty to make sure that we do not 'overtake'
4076 * ourselves and try to fill a buffer that is already primed
4077 */
4078 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4079 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4080 return -EBUSY;
4081 }
4082 /* check if we need to switch packing state of this queue */
4083 qeth_switch_to_packing_if_needed(queue);
4084 if (queue->do_pack) {
4085 do_pack = 1;
4086 /* does packet fit in current buffer? */
4087 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4088 buffer->next_element_to_fill) < elements_needed) {
4089 /* ... no -> set state PRIMED */
4090 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4091 flush_count++;
4092 queue->next_buf_to_fill =
4093 (queue->next_buf_to_fill + 1) %
4094 QDIO_MAX_BUFFERS_PER_Q;
4095 buffer = queue->bufs[queue->next_buf_to_fill];
4096 /* we did a step forward, so check buffer state
4097 * again */
4098 if (atomic_read(&buffer->state) !=
4099 QETH_QDIO_BUF_EMPTY) {
4100 qeth_flush_buffers(queue, start_index,
4101 flush_count);
4102 atomic_set(&queue->state,
4103 QETH_OUT_Q_UNLOCKED);
4104 return -EBUSY;
4105 }
4106 }
4107 }
4108 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4109 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4110 QDIO_MAX_BUFFERS_PER_Q;
4111 flush_count += tmp;
4112 if (flush_count)
4113 qeth_flush_buffers(queue, start_index, flush_count);
4114 else if (!atomic_read(&queue->set_pci_flags_count))
4115 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4116 /*
4117 * queue->state will go from LOCKED -> UNLOCKED or from
4118 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4119 * (switch packing state or flush buffer to get another pci flag out).
4120 * In that case we will enter this loop
4121 */
4122 while (atomic_dec_return(&queue->state)) {
4123 flush_count = 0;
4124 start_index = queue->next_buf_to_fill;
4125 /* check if we can go back to non-packing state */
4126 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4127 /*
4128 * check if we need to flush a packing buffer to get a pci
4129 * flag out on the queue
4130 */
4131 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4132 flush_count += qeth_flush_buffers_on_no_pci(queue);
4133 if (flush_count)
4134 qeth_flush_buffers(queue, start_index, flush_count);
4135 }
4136 /* at this point the queue is UNLOCKED again */
4137 if (queue->card->options.performance_stats && do_pack)
4138 queue->card->perf_stats.bufs_sent_pack += flush_count;
4139
4140 return rc;
4141 }
4142 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4143
4144 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4145 struct qeth_reply *reply, unsigned long data)
4146 {
4147 struct qeth_ipa_cmd *cmd;
4148 struct qeth_ipacmd_setadpparms *setparms;
4149
4150 QETH_CARD_TEXT(card, 4, "prmadpcb");
4151
4152 cmd = (struct qeth_ipa_cmd *) data;
4153 setparms = &(cmd->data.setadapterparms);
4154
4155 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4156 if (cmd->hdr.return_code) {
4157 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4158 setparms->data.mode = SET_PROMISC_MODE_OFF;
4159 }
4160 card->info.promisc_mode = setparms->data.mode;
4161 return 0;
4162 }
4163
4164 void qeth_setadp_promisc_mode(struct qeth_card *card)
4165 {
4166 enum qeth_ipa_promisc_modes mode;
4167 struct net_device *dev = card->dev;
4168 struct qeth_cmd_buffer *iob;
4169 struct qeth_ipa_cmd *cmd;
4170
4171 QETH_CARD_TEXT(card, 4, "setprom");
4172
4173 if (((dev->flags & IFF_PROMISC) &&
4174 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4175 (!(dev->flags & IFF_PROMISC) &&
4176 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4177 return;
4178 mode = SET_PROMISC_MODE_OFF;
4179 if (dev->flags & IFF_PROMISC)
4180 mode = SET_PROMISC_MODE_ON;
4181 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4182
4183 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4184 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4185 if (!iob)
4186 return;
4187 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4188 cmd->data.setadapterparms.data.mode = mode;
4189 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4190 }
4191 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4192
4193 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4194 {
4195 struct qeth_card *card;
4196 char dbf_text[15];
4197
4198 card = dev->ml_priv;
4199
4200 QETH_CARD_TEXT(card, 4, "chgmtu");
4201 sprintf(dbf_text, "%8x", new_mtu);
4202 QETH_CARD_TEXT(card, 4, dbf_text);
4203
4204 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4205 (!qeth_mtu_is_valid(card, new_mtu)))
4206 return -EINVAL;
4207 dev->mtu = new_mtu;
4208 return 0;
4209 }
4210 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4211
4212 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4213 {
4214 struct qeth_card *card;
4215
4216 card = dev->ml_priv;
4217
4218 QETH_CARD_TEXT(card, 5, "getstat");
4219
4220 return &card->stats;
4221 }
4222 EXPORT_SYMBOL_GPL(qeth_get_stats);
4223
4224 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4225 struct qeth_reply *reply, unsigned long data)
4226 {
4227 struct qeth_ipa_cmd *cmd;
4228
4229 QETH_CARD_TEXT(card, 4, "chgmaccb");
4230
4231 cmd = (struct qeth_ipa_cmd *) data;
4232 if (!card->options.layer2 ||
4233 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4234 memcpy(card->dev->dev_addr,
4235 &cmd->data.setadapterparms.data.change_addr.addr,
4236 OSA_ADDR_LEN);
4237 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4238 }
4239 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4240 return 0;
4241 }
4242
4243 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4244 {
4245 int rc;
4246 struct qeth_cmd_buffer *iob;
4247 struct qeth_ipa_cmd *cmd;
4248
4249 QETH_CARD_TEXT(card, 4, "chgmac");
4250
4251 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4252 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4253 sizeof(struct qeth_change_addr));
4254 if (!iob)
4255 return -ENOMEM;
4256 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4257 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4258 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4259 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4260 card->dev->dev_addr, OSA_ADDR_LEN);
4261 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4262 NULL);
4263 return rc;
4264 }
4265 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4266
4267 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4268 struct qeth_reply *reply, unsigned long data)
4269 {
4270 struct qeth_ipa_cmd *cmd;
4271 struct qeth_set_access_ctrl *access_ctrl_req;
4272 int fallback = *(int *)reply->param;
4273
4274 QETH_CARD_TEXT(card, 4, "setaccb");
4275
4276 cmd = (struct qeth_ipa_cmd *) data;
4277 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4278 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4279 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4280 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4281 cmd->data.setadapterparms.hdr.return_code);
4282 if (cmd->data.setadapterparms.hdr.return_code !=
4283 SET_ACCESS_CTRL_RC_SUCCESS)
4284 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4285 card->gdev->dev.kobj.name,
4286 access_ctrl_req->subcmd_code,
4287 cmd->data.setadapterparms.hdr.return_code);
4288 switch (cmd->data.setadapterparms.hdr.return_code) {
4289 case SET_ACCESS_CTRL_RC_SUCCESS:
4290 if (card->options.isolation == ISOLATION_MODE_NONE) {
4291 dev_info(&card->gdev->dev,
4292 "QDIO data connection isolation is deactivated\n");
4293 } else {
4294 dev_info(&card->gdev->dev,
4295 "QDIO data connection isolation is activated\n");
4296 }
4297 break;
4298 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4299 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4300 "deactivated\n", dev_name(&card->gdev->dev));
4301 if (fallback)
4302 card->options.isolation = card->options.prev_isolation;
4303 break;
4304 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4305 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4306 " activated\n", dev_name(&card->gdev->dev));
4307 if (fallback)
4308 card->options.isolation = card->options.prev_isolation;
4309 break;
4310 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4311 dev_err(&card->gdev->dev, "Adapter does not "
4312 "support QDIO data connection isolation\n");
4313 break;
4314 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4315 dev_err(&card->gdev->dev,
4316 "Adapter is dedicated. "
4317 "QDIO data connection isolation not supported\n");
4318 if (fallback)
4319 card->options.isolation = card->options.prev_isolation;
4320 break;
4321 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4322 dev_err(&card->gdev->dev,
4323 "TSO does not permit QDIO data connection isolation\n");
4324 if (fallback)
4325 card->options.isolation = card->options.prev_isolation;
4326 break;
4327 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4328 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4329 "support reflective relay mode\n");
4330 if (fallback)
4331 card->options.isolation = card->options.prev_isolation;
4332 break;
4333 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4334 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4335 "enabled at the adjacent switch port");
4336 if (fallback)
4337 card->options.isolation = card->options.prev_isolation;
4338 break;
4339 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4340 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4341 "at the adjacent switch failed\n");
4342 break;
4343 default:
4344 /* this should never happen */
4345 if (fallback)
4346 card->options.isolation = card->options.prev_isolation;
4347 break;
4348 }
4349 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4350 return 0;
4351 }
4352
4353 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4354 enum qeth_ipa_isolation_modes isolation, int fallback)
4355 {
4356 int rc;
4357 struct qeth_cmd_buffer *iob;
4358 struct qeth_ipa_cmd *cmd;
4359 struct qeth_set_access_ctrl *access_ctrl_req;
4360
4361 QETH_CARD_TEXT(card, 4, "setacctl");
4362
4363 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4364 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4365
4366 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4367 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4368 sizeof(struct qeth_set_access_ctrl));
4369 if (!iob)
4370 return -ENOMEM;
4371 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4372 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4373 access_ctrl_req->subcmd_code = isolation;
4374
4375 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4376 &fallback);
4377 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4378 return rc;
4379 }
4380
4381 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4382 {
4383 int rc = 0;
4384
4385 QETH_CARD_TEXT(card, 4, "setactlo");
4386
4387 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4388 card->info.type == QETH_CARD_TYPE_OSX) &&
4389 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4390 rc = qeth_setadpparms_set_access_ctrl(card,
4391 card->options.isolation, fallback);
4392 if (rc) {
4393 QETH_DBF_MESSAGE(3,
4394 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4395 card->gdev->dev.kobj.name,
4396 rc);
4397 rc = -EOPNOTSUPP;
4398 }
4399 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4400 card->options.isolation = ISOLATION_MODE_NONE;
4401
4402 dev_err(&card->gdev->dev, "Adapter does not "
4403 "support QDIO data connection isolation\n");
4404 rc = -EOPNOTSUPP;
4405 }
4406 return rc;
4407 }
4408 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4409
4410 void qeth_tx_timeout(struct net_device *dev)
4411 {
4412 struct qeth_card *card;
4413
4414 card = dev->ml_priv;
4415 QETH_CARD_TEXT(card, 4, "txtimeo");
4416 card->stats.tx_errors++;
4417 qeth_schedule_recovery(card);
4418 }
4419 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4420
4421 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4422 {
4423 struct qeth_card *card = dev->ml_priv;
4424 int rc = 0;
4425
4426 switch (regnum) {
4427 case MII_BMCR: /* Basic mode control register */
4428 rc = BMCR_FULLDPLX;
4429 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4430 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4431 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4432 rc |= BMCR_SPEED100;
4433 break;
4434 case MII_BMSR: /* Basic mode status register */
4435 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4436 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4437 BMSR_100BASE4;
4438 break;
4439 case MII_PHYSID1: /* PHYS ID 1 */
4440 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4441 dev->dev_addr[2];
4442 rc = (rc >> 5) & 0xFFFF;
4443 break;
4444 case MII_PHYSID2: /* PHYS ID 2 */
4445 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4446 break;
4447 case MII_ADVERTISE: /* Advertisement control reg */
4448 rc = ADVERTISE_ALL;
4449 break;
4450 case MII_LPA: /* Link partner ability reg */
4451 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4452 LPA_100BASE4 | LPA_LPACK;
4453 break;
4454 case MII_EXPANSION: /* Expansion register */
4455 break;
4456 case MII_DCOUNTER: /* disconnect counter */
4457 break;
4458 case MII_FCSCOUNTER: /* false carrier counter */
4459 break;
4460 case MII_NWAYTEST: /* N-way auto-neg test register */
4461 break;
4462 case MII_RERRCOUNTER: /* rx error counter */
4463 rc = card->stats.rx_errors;
4464 break;
4465 case MII_SREVISION: /* silicon revision */
4466 break;
4467 case MII_RESV1: /* reserved 1 */
4468 break;
4469 case MII_LBRERROR: /* loopback, rx, bypass error */
4470 break;
4471 case MII_PHYADDR: /* physical address */
4472 break;
4473 case MII_RESV2: /* reserved 2 */
4474 break;
4475 case MII_TPISTATUS: /* TPI status for 10mbps */
4476 break;
4477 case MII_NCONFIG: /* network interface config */
4478 break;
4479 default:
4480 break;
4481 }
4482 return rc;
4483 }
4484 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4485
4486 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4487 struct qeth_cmd_buffer *iob, int len,
4488 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4489 unsigned long),
4490 void *reply_param)
4491 {
4492 u16 s1, s2;
4493
4494 QETH_CARD_TEXT(card, 4, "sendsnmp");
4495
4496 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4497 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4498 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4499 /* adjust PDU length fields in IPA_PDU_HEADER */
4500 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4501 s2 = (u32) len;
4502 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4503 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4504 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4505 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4506 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4507 reply_cb, reply_param);
4508 }
4509
4510 static int qeth_snmp_command_cb(struct qeth_card *card,
4511 struct qeth_reply *reply, unsigned long sdata)
4512 {
4513 struct qeth_ipa_cmd *cmd;
4514 struct qeth_arp_query_info *qinfo;
4515 struct qeth_snmp_cmd *snmp;
4516 unsigned char *data;
4517 __u16 data_len;
4518
4519 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4520
4521 cmd = (struct qeth_ipa_cmd *) sdata;
4522 data = (unsigned char *)((char *)cmd - reply->offset);
4523 qinfo = (struct qeth_arp_query_info *) reply->param;
4524 snmp = &cmd->data.setadapterparms.data.snmp;
4525
4526 if (cmd->hdr.return_code) {
4527 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4528 return 0;
4529 }
4530 if (cmd->data.setadapterparms.hdr.return_code) {
4531 cmd->hdr.return_code =
4532 cmd->data.setadapterparms.hdr.return_code;
4533 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4534 return 0;
4535 }
4536 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4537 if (cmd->data.setadapterparms.hdr.seq_no == 1)
4538 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4539 else
4540 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4541
4542 /* check if there is enough room in userspace */
4543 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4544 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4545 cmd->hdr.return_code = IPA_RC_ENOMEM;
4546 return 0;
4547 }
4548 QETH_CARD_TEXT_(card, 4, "snore%i",
4549 cmd->data.setadapterparms.hdr.used_total);
4550 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4551 cmd->data.setadapterparms.hdr.seq_no);
4552 /*copy entries to user buffer*/
4553 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4554 memcpy(qinfo->udata + qinfo->udata_offset,
4555 (char *)snmp,
4556 data_len + offsetof(struct qeth_snmp_cmd, data));
4557 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4558 } else {
4559 memcpy(qinfo->udata + qinfo->udata_offset,
4560 (char *)&snmp->request, data_len);
4561 }
4562 qinfo->udata_offset += data_len;
4563 /* check if all replies received ... */
4564 QETH_CARD_TEXT_(card, 4, "srtot%i",
4565 cmd->data.setadapterparms.hdr.used_total);
4566 QETH_CARD_TEXT_(card, 4, "srseq%i",
4567 cmd->data.setadapterparms.hdr.seq_no);
4568 if (cmd->data.setadapterparms.hdr.seq_no <
4569 cmd->data.setadapterparms.hdr.used_total)
4570 return 1;
4571 return 0;
4572 }
4573
4574 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4575 {
4576 struct qeth_cmd_buffer *iob;
4577 struct qeth_ipa_cmd *cmd;
4578 struct qeth_snmp_ureq *ureq;
4579 unsigned int req_len;
4580 struct qeth_arp_query_info qinfo = {0, };
4581 int rc = 0;
4582
4583 QETH_CARD_TEXT(card, 3, "snmpcmd");
4584
4585 if (card->info.guestlan)
4586 return -EOPNOTSUPP;
4587
4588 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4589 (!card->options.layer2)) {
4590 return -EOPNOTSUPP;
4591 }
4592 /* skip 4 bytes (data_len struct member) to get req_len */
4593 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4594 return -EFAULT;
4595 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4596 sizeof(struct qeth_ipacmd_hdr) -
4597 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4598 return -EINVAL;
4599 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4600 if (IS_ERR(ureq)) {
4601 QETH_CARD_TEXT(card, 2, "snmpnome");
4602 return PTR_ERR(ureq);
4603 }
4604 qinfo.udata_len = ureq->hdr.data_len;
4605 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4606 if (!qinfo.udata) {
4607 kfree(ureq);
4608 return -ENOMEM;
4609 }
4610 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4611
4612 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4613 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4614 if (!iob) {
4615 rc = -ENOMEM;
4616 goto out;
4617 }
4618 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4619 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4620 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4621 qeth_snmp_command_cb, (void *)&qinfo);
4622 if (rc)
4623 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4624 QETH_CARD_IFNAME(card), rc);
4625 else {
4626 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4627 rc = -EFAULT;
4628 }
4629 out:
4630 kfree(ureq);
4631 kfree(qinfo.udata);
4632 return rc;
4633 }
4634 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4635
4636 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4637 struct qeth_reply *reply, unsigned long data)
4638 {
4639 struct qeth_ipa_cmd *cmd;
4640 struct qeth_qoat_priv *priv;
4641 char *resdata;
4642 int resdatalen;
4643
4644 QETH_CARD_TEXT(card, 3, "qoatcb");
4645
4646 cmd = (struct qeth_ipa_cmd *)data;
4647 priv = (struct qeth_qoat_priv *)reply->param;
4648 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4649 resdata = (char *)data + 28;
4650
4651 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4652 cmd->hdr.return_code = IPA_RC_FFFF;
4653 return 0;
4654 }
4655
4656 memcpy((priv->buffer + priv->response_len), resdata,
4657 resdatalen);
4658 priv->response_len += resdatalen;
4659
4660 if (cmd->data.setadapterparms.hdr.seq_no <
4661 cmd->data.setadapterparms.hdr.used_total)
4662 return 1;
4663 return 0;
4664 }
4665
4666 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4667 {
4668 int rc = 0;
4669 struct qeth_cmd_buffer *iob;
4670 struct qeth_ipa_cmd *cmd;
4671 struct qeth_query_oat *oat_req;
4672 struct qeth_query_oat_data oat_data;
4673 struct qeth_qoat_priv priv;
4674 void __user *tmp;
4675
4676 QETH_CARD_TEXT(card, 3, "qoatcmd");
4677
4678 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4679 rc = -EOPNOTSUPP;
4680 goto out;
4681 }
4682
4683 if (copy_from_user(&oat_data, udata,
4684 sizeof(struct qeth_query_oat_data))) {
4685 rc = -EFAULT;
4686 goto out;
4687 }
4688
4689 priv.buffer_len = oat_data.buffer_len;
4690 priv.response_len = 0;
4691 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL);
4692 if (!priv.buffer) {
4693 rc = -ENOMEM;
4694 goto out;
4695 }
4696
4697 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4698 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4699 sizeof(struct qeth_query_oat));
4700 if (!iob) {
4701 rc = -ENOMEM;
4702 goto out_free;
4703 }
4704 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4705 oat_req = &cmd->data.setadapterparms.data.query_oat;
4706 oat_req->subcmd_code = oat_data.command;
4707
4708 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4709 &priv);
4710 if (!rc) {
4711 if (is_compat_task())
4712 tmp = compat_ptr(oat_data.ptr);
4713 else
4714 tmp = (void __user *)(unsigned long)oat_data.ptr;
4715
4716 if (copy_to_user(tmp, priv.buffer,
4717 priv.response_len)) {
4718 rc = -EFAULT;
4719 goto out_free;
4720 }
4721
4722 oat_data.response_len = priv.response_len;
4723
4724 if (copy_to_user(udata, &oat_data,
4725 sizeof(struct qeth_query_oat_data)))
4726 rc = -EFAULT;
4727 } else
4728 if (rc == IPA_RC_FFFF)
4729 rc = -EFAULT;
4730
4731 out_free:
4732 kfree(priv.buffer);
4733 out:
4734 return rc;
4735 }
4736 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4737
4738 static int qeth_query_card_info_cb(struct qeth_card *card,
4739 struct qeth_reply *reply, unsigned long data)
4740 {
4741 struct qeth_ipa_cmd *cmd;
4742 struct qeth_query_card_info *card_info;
4743 struct carrier_info *carrier_info;
4744
4745 QETH_CARD_TEXT(card, 2, "qcrdincb");
4746 carrier_info = (struct carrier_info *)reply->param;
4747 cmd = (struct qeth_ipa_cmd *)data;
4748 card_info = &cmd->data.setadapterparms.data.card_info;
4749 if (cmd->data.setadapterparms.hdr.return_code == 0) {
4750 carrier_info->card_type = card_info->card_type;
4751 carrier_info->port_mode = card_info->port_mode;
4752 carrier_info->port_speed = card_info->port_speed;
4753 }
4754
4755 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4756 return 0;
4757 }
4758
4759 static int qeth_query_card_info(struct qeth_card *card,
4760 struct carrier_info *carrier_info)
4761 {
4762 struct qeth_cmd_buffer *iob;
4763
4764 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4765 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4766 return -EOPNOTSUPP;
4767 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4768 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4769 if (!iob)
4770 return -ENOMEM;
4771 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4772 (void *)carrier_info);
4773 }
4774
4775 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4776 {
4777 switch (card->info.type) {
4778 case QETH_CARD_TYPE_IQD:
4779 return 2;
4780 default:
4781 return 0;
4782 }
4783 }
4784
4785 static void qeth_determine_capabilities(struct qeth_card *card)
4786 {
4787 int rc;
4788 int length;
4789 char *prcd;
4790 struct ccw_device *ddev;
4791 int ddev_offline = 0;
4792
4793 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4794 ddev = CARD_DDEV(card);
4795 if (!ddev->online) {
4796 ddev_offline = 1;
4797 rc = ccw_device_set_online(ddev);
4798 if (rc) {
4799 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4800 goto out;
4801 }
4802 }
4803
4804 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4805 if (rc) {
4806 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4807 dev_name(&card->gdev->dev), rc);
4808 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4809 goto out_offline;
4810 }
4811 qeth_configure_unitaddr(card, prcd);
4812 if (ddev_offline)
4813 qeth_configure_blkt_default(card, prcd);
4814 kfree(prcd);
4815
4816 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4817 if (rc)
4818 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4819
4820 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4821 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4822 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4823 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4824 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4825 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4826 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4827 dev_info(&card->gdev->dev,
4828 "Completion Queueing supported\n");
4829 } else {
4830 card->options.cq = QETH_CQ_NOTAVAILABLE;
4831 }
4832
4833
4834 out_offline:
4835 if (ddev_offline == 1)
4836 ccw_device_set_offline(ddev);
4837 out:
4838 return;
4839 }
4840
4841 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4842 struct qdio_buffer **in_sbal_ptrs,
4843 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4844 int i;
4845
4846 if (card->options.cq == QETH_CQ_ENABLED) {
4847 int offset = QDIO_MAX_BUFFERS_PER_Q *
4848 (card->qdio.no_in_queues - 1);
4849 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4850 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4851 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4852 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4853 }
4854
4855 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4856 }
4857 }
4858
4859 static int qeth_qdio_establish(struct qeth_card *card)
4860 {
4861 struct qdio_initialize init_data;
4862 char *qib_param_field;
4863 struct qdio_buffer **in_sbal_ptrs;
4864 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4865 struct qdio_buffer **out_sbal_ptrs;
4866 int i, j, k;
4867 int rc = 0;
4868
4869 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4870
4871 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4872 GFP_KERNEL);
4873 if (!qib_param_field) {
4874 rc = -ENOMEM;
4875 goto out_free_nothing;
4876 }
4877
4878 qeth_create_qib_param_field(card, qib_param_field);
4879 qeth_create_qib_param_field_blkt(card, qib_param_field);
4880
4881 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4882 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4883 GFP_KERNEL);
4884 if (!in_sbal_ptrs) {
4885 rc = -ENOMEM;
4886 goto out_free_qib_param;
4887 }
4888 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4889 in_sbal_ptrs[i] = (struct qdio_buffer *)
4890 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4891 }
4892
4893 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4894 GFP_KERNEL);
4895 if (!queue_start_poll) {
4896 rc = -ENOMEM;
4897 goto out_free_in_sbals;
4898 }
4899 for (i = 0; i < card->qdio.no_in_queues; ++i)
4900 queue_start_poll[i] = card->discipline->start_poll;
4901
4902 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4903
4904 out_sbal_ptrs =
4905 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4906 sizeof(void *), GFP_KERNEL);
4907 if (!out_sbal_ptrs) {
4908 rc = -ENOMEM;
4909 goto out_free_queue_start_poll;
4910 }
4911 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4912 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4913 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4914 card->qdio.out_qs[i]->bufs[j]->buffer);
4915 }
4916
4917 memset(&init_data, 0, sizeof(struct qdio_initialize));
4918 init_data.cdev = CARD_DDEV(card);
4919 init_data.q_format = qeth_get_qdio_q_format(card);
4920 init_data.qib_param_field_format = 0;
4921 init_data.qib_param_field = qib_param_field;
4922 init_data.no_input_qs = card->qdio.no_in_queues;
4923 init_data.no_output_qs = card->qdio.no_out_queues;
4924 init_data.input_handler = card->discipline->input_handler;
4925 init_data.output_handler = card->discipline->output_handler;
4926 init_data.queue_start_poll_array = queue_start_poll;
4927 init_data.int_parm = (unsigned long) card;
4928 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
4929 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4930 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4931 init_data.scan_threshold =
4932 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4933
4934 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4935 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4936 rc = qdio_allocate(&init_data);
4937 if (rc) {
4938 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4939 goto out;
4940 }
4941 rc = qdio_establish(&init_data);
4942 if (rc) {
4943 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4944 qdio_free(CARD_DDEV(card));
4945 }
4946 }
4947
4948 switch (card->options.cq) {
4949 case QETH_CQ_ENABLED:
4950 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4951 break;
4952 case QETH_CQ_DISABLED:
4953 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4954 break;
4955 default:
4956 break;
4957 }
4958 out:
4959 kfree(out_sbal_ptrs);
4960 out_free_queue_start_poll:
4961 kfree(queue_start_poll);
4962 out_free_in_sbals:
4963 kfree(in_sbal_ptrs);
4964 out_free_qib_param:
4965 kfree(qib_param_field);
4966 out_free_nothing:
4967 return rc;
4968 }
4969
4970 static void qeth_core_free_card(struct qeth_card *card)
4971 {
4972
4973 QETH_DBF_TEXT(SETUP, 2, "freecrd");
4974 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4975 qeth_clean_channel(&card->read);
4976 qeth_clean_channel(&card->write);
4977 if (card->dev)
4978 free_netdev(card->dev);
4979 qeth_free_qdio_buffers(card);
4980 unregister_service_level(&card->qeth_service_level);
4981 kfree(card);
4982 }
4983
4984 void qeth_trace_features(struct qeth_card *card)
4985 {
4986 QETH_CARD_TEXT(card, 2, "features");
4987 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4988 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4989 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4990 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4991 sizeof(card->info.diagass_support));
4992 }
4993 EXPORT_SYMBOL_GPL(qeth_trace_features);
4994
4995 static struct ccw_device_id qeth_ids[] = {
4996 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4997 .driver_info = QETH_CARD_TYPE_OSD},
4998 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4999 .driver_info = QETH_CARD_TYPE_IQD},
5000 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5001 .driver_info = QETH_CARD_TYPE_OSN},
5002 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5003 .driver_info = QETH_CARD_TYPE_OSM},
5004 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5005 .driver_info = QETH_CARD_TYPE_OSX},
5006 {},
5007 };
5008 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5009
5010 static struct ccw_driver qeth_ccw_driver = {
5011 .driver = {
5012 .owner = THIS_MODULE,
5013 .name = "qeth",
5014 },
5015 .ids = qeth_ids,
5016 .probe = ccwgroup_probe_ccwdev,
5017 .remove = ccwgroup_remove_ccwdev,
5018 };
5019
5020 int qeth_core_hardsetup_card(struct qeth_card *card)
5021 {
5022 int retries = 3;
5023 int rc;
5024
5025 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5026 atomic_set(&card->force_alloc_skb, 0);
5027 qeth_update_from_chp_desc(card);
5028 retry:
5029 if (retries < 3)
5030 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5031 dev_name(&card->gdev->dev));
5032 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5033 ccw_device_set_offline(CARD_DDEV(card));
5034 ccw_device_set_offline(CARD_WDEV(card));
5035 ccw_device_set_offline(CARD_RDEV(card));
5036 qdio_free(CARD_DDEV(card));
5037 rc = ccw_device_set_online(CARD_RDEV(card));
5038 if (rc)
5039 goto retriable;
5040 rc = ccw_device_set_online(CARD_WDEV(card));
5041 if (rc)
5042 goto retriable;
5043 rc = ccw_device_set_online(CARD_DDEV(card));
5044 if (rc)
5045 goto retriable;
5046 retriable:
5047 if (rc == -ERESTARTSYS) {
5048 QETH_DBF_TEXT(SETUP, 2, "break1");
5049 return rc;
5050 } else if (rc) {
5051 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5052 if (--retries < 0)
5053 goto out;
5054 else
5055 goto retry;
5056 }
5057 qeth_determine_capabilities(card);
5058 qeth_init_tokens(card);
5059 qeth_init_func_level(card);
5060 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5061 if (rc == -ERESTARTSYS) {
5062 QETH_DBF_TEXT(SETUP, 2, "break2");
5063 return rc;
5064 } else if (rc) {
5065 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5066 if (--retries < 0)
5067 goto out;
5068 else
5069 goto retry;
5070 }
5071 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5072 if (rc == -ERESTARTSYS) {
5073 QETH_DBF_TEXT(SETUP, 2, "break3");
5074 return rc;
5075 } else if (rc) {
5076 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5077 if (--retries < 0)
5078 goto out;
5079 else
5080 goto retry;
5081 }
5082 card->read_or_write_problem = 0;
5083 rc = qeth_mpc_initialize(card);
5084 if (rc) {
5085 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5086 goto out;
5087 }
5088
5089 rc = qeth_send_startlan(card);
5090 if (rc) {
5091 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5092 if (rc == IPA_RC_LAN_OFFLINE) {
5093 dev_warn(&card->gdev->dev,
5094 "The LAN is offline\n");
5095 card->lan_online = 0;
5096 } else {
5097 rc = -ENODEV;
5098 goto out;
5099 }
5100 } else
5101 card->lan_online = 1;
5102
5103 card->options.ipa4.supported_funcs = 0;
5104 card->options.ipa6.supported_funcs = 0;
5105 card->options.adp.supported_funcs = 0;
5106 card->options.sbp.supported_funcs = 0;
5107 card->info.diagass_support = 0;
5108 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5109 if (rc == -ENOMEM)
5110 goto out;
5111 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5112 rc = qeth_query_setadapterparms(card);
5113 if (rc < 0) {
5114 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5115 goto out;
5116 }
5117 }
5118 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5119 rc = qeth_query_setdiagass(card);
5120 if (rc < 0) {
5121 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5122 goto out;
5123 }
5124 }
5125 return 0;
5126 out:
5127 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5128 "an error on the device\n");
5129 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5130 dev_name(&card->gdev->dev), rc);
5131 return rc;
5132 }
5133 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5134
5135 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5136 struct qdio_buffer_element *element,
5137 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5138 {
5139 struct page *page = virt_to_page(element->addr);
5140 if (*pskb == NULL) {
5141 if (qethbuffer->rx_skb) {
5142 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5143 *pskb = qethbuffer->rx_skb;
5144 qethbuffer->rx_skb = NULL;
5145 } else {
5146 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5147 if (!(*pskb))
5148 return -ENOMEM;
5149 }
5150
5151 skb_reserve(*pskb, ETH_HLEN);
5152 if (data_len <= QETH_RX_PULL_LEN) {
5153 memcpy(skb_put(*pskb, data_len), element->addr + offset,
5154 data_len);
5155 } else {
5156 get_page(page);
5157 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5158 element->addr + offset, QETH_RX_PULL_LEN);
5159 skb_fill_page_desc(*pskb, *pfrag, page,
5160 offset + QETH_RX_PULL_LEN,
5161 data_len - QETH_RX_PULL_LEN);
5162 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5163 (*pskb)->len += data_len - QETH_RX_PULL_LEN;
5164 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5165 (*pfrag)++;
5166 }
5167 } else {
5168 get_page(page);
5169 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5170 (*pskb)->data_len += data_len;
5171 (*pskb)->len += data_len;
5172 (*pskb)->truesize += data_len;
5173 (*pfrag)++;
5174 }
5175
5176
5177 return 0;
5178 }
5179
5180 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5181 {
5182 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5183 }
5184
5185 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5186 struct qeth_qdio_buffer *qethbuffer,
5187 struct qdio_buffer_element **__element, int *__offset,
5188 struct qeth_hdr **hdr)
5189 {
5190 struct qdio_buffer_element *element = *__element;
5191 struct qdio_buffer *buffer = qethbuffer->buffer;
5192 int offset = *__offset;
5193 struct sk_buff *skb = NULL;
5194 int skb_len = 0;
5195 void *data_ptr;
5196 int data_len;
5197 int headroom = 0;
5198 int use_rx_sg = 0;
5199 int frag = 0;
5200
5201 /* qeth_hdr must not cross element boundaries */
5202 if (element->length < offset + sizeof(struct qeth_hdr)) {
5203 if (qeth_is_last_sbale(element))
5204 return NULL;
5205 element++;
5206 offset = 0;
5207 if (element->length < sizeof(struct qeth_hdr))
5208 return NULL;
5209 }
5210 *hdr = element->addr + offset;
5211
5212 offset += sizeof(struct qeth_hdr);
5213 switch ((*hdr)->hdr.l2.id) {
5214 case QETH_HEADER_TYPE_LAYER2:
5215 skb_len = (*hdr)->hdr.l2.pkt_length;
5216 break;
5217 case QETH_HEADER_TYPE_LAYER3:
5218 skb_len = (*hdr)->hdr.l3.length;
5219 headroom = ETH_HLEN;
5220 break;
5221 case QETH_HEADER_TYPE_OSN:
5222 skb_len = (*hdr)->hdr.osn.pdu_length;
5223 headroom = sizeof(struct qeth_hdr);
5224 break;
5225 default:
5226 break;
5227 }
5228
5229 if (!skb_len)
5230 return NULL;
5231
5232 if (((skb_len >= card->options.rx_sg_cb) &&
5233 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5234 (!atomic_read(&card->force_alloc_skb))) ||
5235 (card->options.cq == QETH_CQ_ENABLED)) {
5236 use_rx_sg = 1;
5237 } else {
5238 skb = dev_alloc_skb(skb_len + headroom);
5239 if (!skb)
5240 goto no_mem;
5241 if (headroom)
5242 skb_reserve(skb, headroom);
5243 }
5244
5245 data_ptr = element->addr + offset;
5246 while (skb_len) {
5247 data_len = min(skb_len, (int)(element->length - offset));
5248 if (data_len) {
5249 if (use_rx_sg) {
5250 if (qeth_create_skb_frag(qethbuffer, element,
5251 &skb, offset, &frag, data_len))
5252 goto no_mem;
5253 } else {
5254 memcpy(skb_put(skb, data_len), data_ptr,
5255 data_len);
5256 }
5257 }
5258 skb_len -= data_len;
5259 if (skb_len) {
5260 if (qeth_is_last_sbale(element)) {
5261 QETH_CARD_TEXT(card, 4, "unexeob");
5262 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5263 dev_kfree_skb_any(skb);
5264 card->stats.rx_errors++;
5265 return NULL;
5266 }
5267 element++;
5268 offset = 0;
5269 data_ptr = element->addr;
5270 } else {
5271 offset += data_len;
5272 }
5273 }
5274 *__element = element;
5275 *__offset = offset;
5276 if (use_rx_sg && card->options.performance_stats) {
5277 card->perf_stats.sg_skbs_rx++;
5278 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5279 }
5280 return skb;
5281 no_mem:
5282 if (net_ratelimit()) {
5283 QETH_CARD_TEXT(card, 2, "noskbmem");
5284 }
5285 card->stats.rx_dropped++;
5286 return NULL;
5287 }
5288 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5289
5290 int qeth_setassparms_cb(struct qeth_card *card,
5291 struct qeth_reply *reply, unsigned long data)
5292 {
5293 struct qeth_ipa_cmd *cmd;
5294
5295 QETH_CARD_TEXT(card, 4, "defadpcb");
5296
5297 cmd = (struct qeth_ipa_cmd *) data;
5298 if (cmd->hdr.return_code == 0) {
5299 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5300 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5301 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5302 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5303 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5304 }
5305 return 0;
5306 }
5307 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5308
5309 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5310 enum qeth_ipa_funcs ipa_func,
5311 __u16 cmd_code, __u16 len,
5312 enum qeth_prot_versions prot)
5313 {
5314 struct qeth_cmd_buffer *iob;
5315 struct qeth_ipa_cmd *cmd;
5316
5317 QETH_CARD_TEXT(card, 4, "getasscm");
5318 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5319
5320 if (iob) {
5321 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5322 cmd->data.setassparms.hdr.assist_no = ipa_func;
5323 cmd->data.setassparms.hdr.length = 8 + len;
5324 cmd->data.setassparms.hdr.command_code = cmd_code;
5325 cmd->data.setassparms.hdr.return_code = 0;
5326 cmd->data.setassparms.hdr.seq_no = 0;
5327 }
5328
5329 return iob;
5330 }
5331 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5332
5333 int qeth_send_setassparms(struct qeth_card *card,
5334 struct qeth_cmd_buffer *iob, __u16 len, long data,
5335 int (*reply_cb)(struct qeth_card *,
5336 struct qeth_reply *, unsigned long),
5337 void *reply_param)
5338 {
5339 int rc;
5340 struct qeth_ipa_cmd *cmd;
5341
5342 QETH_CARD_TEXT(card, 4, "sendassp");
5343
5344 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5345 if (len <= sizeof(__u32))
5346 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5347 else /* (len > sizeof(__u32)) */
5348 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5349
5350 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5351 return rc;
5352 }
5353 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5354
5355 int qeth_send_simple_setassparms(struct qeth_card *card,
5356 enum qeth_ipa_funcs ipa_func,
5357 __u16 cmd_code, long data)
5358 {
5359 int rc;
5360 int length = 0;
5361 struct qeth_cmd_buffer *iob;
5362
5363 QETH_CARD_TEXT(card, 4, "simassp4");
5364 if (data)
5365 length = sizeof(__u32);
5366 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5367 length, QETH_PROT_IPV4);
5368 if (!iob)
5369 return -ENOMEM;
5370 rc = qeth_send_setassparms(card, iob, length, data,
5371 qeth_setassparms_cb, NULL);
5372 return rc;
5373 }
5374 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5375
5376 static void qeth_unregister_dbf_views(void)
5377 {
5378 int x;
5379 for (x = 0; x < QETH_DBF_INFOS; x++) {
5380 debug_unregister(qeth_dbf[x].id);
5381 qeth_dbf[x].id = NULL;
5382 }
5383 }
5384
5385 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5386 {
5387 char dbf_txt_buf[32];
5388 va_list args;
5389
5390 if (!debug_level_enabled(id, level))
5391 return;
5392 va_start(args, fmt);
5393 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5394 va_end(args);
5395 debug_text_event(id, level, dbf_txt_buf);
5396 }
5397 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5398
5399 static int qeth_register_dbf_views(void)
5400 {
5401 int ret;
5402 int x;
5403
5404 for (x = 0; x < QETH_DBF_INFOS; x++) {
5405 /* register the areas */
5406 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5407 qeth_dbf[x].pages,
5408 qeth_dbf[x].areas,
5409 qeth_dbf[x].len);
5410 if (qeth_dbf[x].id == NULL) {
5411 qeth_unregister_dbf_views();
5412 return -ENOMEM;
5413 }
5414
5415 /* register a view */
5416 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5417 if (ret) {
5418 qeth_unregister_dbf_views();
5419 return ret;
5420 }
5421
5422 /* set a passing level */
5423 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5424 }
5425
5426 return 0;
5427 }
5428
5429 int qeth_core_load_discipline(struct qeth_card *card,
5430 enum qeth_discipline_id discipline)
5431 {
5432 int rc = 0;
5433 mutex_lock(&qeth_mod_mutex);
5434 switch (discipline) {
5435 case QETH_DISCIPLINE_LAYER3:
5436 card->discipline = try_then_request_module(
5437 symbol_get(qeth_l3_discipline), "qeth_l3");
5438 break;
5439 case QETH_DISCIPLINE_LAYER2:
5440 card->discipline = try_then_request_module(
5441 symbol_get(qeth_l2_discipline), "qeth_l2");
5442 break;
5443 }
5444 if (!card->discipline) {
5445 dev_err(&card->gdev->dev, "There is no kernel module to "
5446 "support discipline %d\n", discipline);
5447 rc = -EINVAL;
5448 }
5449 mutex_unlock(&qeth_mod_mutex);
5450 return rc;
5451 }
5452
5453 void qeth_core_free_discipline(struct qeth_card *card)
5454 {
5455 if (card->options.layer2)
5456 symbol_put(qeth_l2_discipline);
5457 else
5458 symbol_put(qeth_l3_discipline);
5459 card->discipline = NULL;
5460 }
5461
5462 static const struct device_type qeth_generic_devtype = {
5463 .name = "qeth_generic",
5464 .groups = qeth_generic_attr_groups,
5465 };
5466 static const struct device_type qeth_osn_devtype = {
5467 .name = "qeth_osn",
5468 .groups = qeth_osn_attr_groups,
5469 };
5470
5471 #define DBF_NAME_LEN 20
5472
5473 struct qeth_dbf_entry {
5474 char dbf_name[DBF_NAME_LEN];
5475 debug_info_t *dbf_info;
5476 struct list_head dbf_list;
5477 };
5478
5479 static LIST_HEAD(qeth_dbf_list);
5480 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5481
5482 static debug_info_t *qeth_get_dbf_entry(char *name)
5483 {
5484 struct qeth_dbf_entry *entry;
5485 debug_info_t *rc = NULL;
5486
5487 mutex_lock(&qeth_dbf_list_mutex);
5488 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5489 if (strcmp(entry->dbf_name, name) == 0) {
5490 rc = entry->dbf_info;
5491 break;
5492 }
5493 }
5494 mutex_unlock(&qeth_dbf_list_mutex);
5495 return rc;
5496 }
5497
5498 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5499 {
5500 struct qeth_dbf_entry *new_entry;
5501
5502 card->debug = debug_register(name, 2, 1, 8);
5503 if (!card->debug) {
5504 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5505 goto err;
5506 }
5507 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5508 goto err_dbg;
5509 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5510 if (!new_entry)
5511 goto err_dbg;
5512 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5513 new_entry->dbf_info = card->debug;
5514 mutex_lock(&qeth_dbf_list_mutex);
5515 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5516 mutex_unlock(&qeth_dbf_list_mutex);
5517
5518 return 0;
5519
5520 err_dbg:
5521 debug_unregister(card->debug);
5522 err:
5523 return -ENOMEM;
5524 }
5525
5526 static void qeth_clear_dbf_list(void)
5527 {
5528 struct qeth_dbf_entry *entry, *tmp;
5529
5530 mutex_lock(&qeth_dbf_list_mutex);
5531 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5532 list_del(&entry->dbf_list);
5533 debug_unregister(entry->dbf_info);
5534 kfree(entry);
5535 }
5536 mutex_unlock(&qeth_dbf_list_mutex);
5537 }
5538
5539 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5540 {
5541 struct qeth_card *card;
5542 struct device *dev;
5543 int rc;
5544 unsigned long flags;
5545 char dbf_name[DBF_NAME_LEN];
5546
5547 QETH_DBF_TEXT(SETUP, 2, "probedev");
5548
5549 dev = &gdev->dev;
5550 if (!get_device(dev))
5551 return -ENODEV;
5552
5553 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5554
5555 card = qeth_alloc_card();
5556 if (!card) {
5557 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5558 rc = -ENOMEM;
5559 goto err_dev;
5560 }
5561
5562 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5563 dev_name(&gdev->dev));
5564 card->debug = qeth_get_dbf_entry(dbf_name);
5565 if (!card->debug) {
5566 rc = qeth_add_dbf_entry(card, dbf_name);
5567 if (rc)
5568 goto err_card;
5569 }
5570
5571 card->read.ccwdev = gdev->cdev[0];
5572 card->write.ccwdev = gdev->cdev[1];
5573 card->data.ccwdev = gdev->cdev[2];
5574 dev_set_drvdata(&gdev->dev, card);
5575 card->gdev = gdev;
5576 gdev->cdev[0]->handler = qeth_irq;
5577 gdev->cdev[1]->handler = qeth_irq;
5578 gdev->cdev[2]->handler = qeth_irq;
5579
5580 rc = qeth_determine_card_type(card);
5581 if (rc) {
5582 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5583 goto err_card;
5584 }
5585 rc = qeth_setup_card(card);
5586 if (rc) {
5587 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5588 goto err_card;
5589 }
5590
5591 if (card->info.type == QETH_CARD_TYPE_OSN)
5592 gdev->dev.type = &qeth_osn_devtype;
5593 else
5594 gdev->dev.type = &qeth_generic_devtype;
5595
5596 switch (card->info.type) {
5597 case QETH_CARD_TYPE_OSN:
5598 case QETH_CARD_TYPE_OSM:
5599 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5600 if (rc)
5601 goto err_card;
5602 rc = card->discipline->setup(card->gdev);
5603 if (rc)
5604 goto err_disc;
5605 case QETH_CARD_TYPE_OSD:
5606 case QETH_CARD_TYPE_OSX:
5607 default:
5608 break;
5609 }
5610
5611 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5612 list_add_tail(&card->list, &qeth_core_card_list.list);
5613 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5614
5615 qeth_determine_capabilities(card);
5616 return 0;
5617
5618 err_disc:
5619 qeth_core_free_discipline(card);
5620 err_card:
5621 qeth_core_free_card(card);
5622 err_dev:
5623 put_device(dev);
5624 return rc;
5625 }
5626
5627 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5628 {
5629 unsigned long flags;
5630 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5631
5632 QETH_DBF_TEXT(SETUP, 2, "removedv");
5633
5634 if (card->discipline) {
5635 card->discipline->remove(gdev);
5636 qeth_core_free_discipline(card);
5637 }
5638
5639 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5640 list_del(&card->list);
5641 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5642 qeth_core_free_card(card);
5643 dev_set_drvdata(&gdev->dev, NULL);
5644 put_device(&gdev->dev);
5645 return;
5646 }
5647
5648 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5649 {
5650 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5651 int rc = 0;
5652 int def_discipline;
5653
5654 if (!card->discipline) {
5655 if (card->info.type == QETH_CARD_TYPE_IQD)
5656 def_discipline = QETH_DISCIPLINE_LAYER3;
5657 else
5658 def_discipline = QETH_DISCIPLINE_LAYER2;
5659 rc = qeth_core_load_discipline(card, def_discipline);
5660 if (rc)
5661 goto err;
5662 rc = card->discipline->setup(card->gdev);
5663 if (rc)
5664 goto err;
5665 }
5666 rc = card->discipline->set_online(gdev);
5667 err:
5668 return rc;
5669 }
5670
5671 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5672 {
5673 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5674 return card->discipline->set_offline(gdev);
5675 }
5676
5677 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5678 {
5679 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5680 if (card->discipline && card->discipline->shutdown)
5681 card->discipline->shutdown(gdev);
5682 }
5683
5684 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5685 {
5686 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5687 if (card->discipline && card->discipline->prepare)
5688 return card->discipline->prepare(gdev);
5689 return 0;
5690 }
5691
5692 static void qeth_core_complete(struct ccwgroup_device *gdev)
5693 {
5694 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5695 if (card->discipline && card->discipline->complete)
5696 card->discipline->complete(gdev);
5697 }
5698
5699 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5700 {
5701 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5702 if (card->discipline && card->discipline->freeze)
5703 return card->discipline->freeze(gdev);
5704 return 0;
5705 }
5706
5707 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5708 {
5709 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5710 if (card->discipline && card->discipline->thaw)
5711 return card->discipline->thaw(gdev);
5712 return 0;
5713 }
5714
5715 static int qeth_core_restore(struct ccwgroup_device *gdev)
5716 {
5717 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5718 if (card->discipline && card->discipline->restore)
5719 return card->discipline->restore(gdev);
5720 return 0;
5721 }
5722
5723 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5724 .driver = {
5725 .owner = THIS_MODULE,
5726 .name = "qeth",
5727 },
5728 .setup = qeth_core_probe_device,
5729 .remove = qeth_core_remove_device,
5730 .set_online = qeth_core_set_online,
5731 .set_offline = qeth_core_set_offline,
5732 .shutdown = qeth_core_shutdown,
5733 .prepare = qeth_core_prepare,
5734 .complete = qeth_core_complete,
5735 .freeze = qeth_core_freeze,
5736 .thaw = qeth_core_thaw,
5737 .restore = qeth_core_restore,
5738 };
5739
5740 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5741 const char *buf, size_t count)
5742 {
5743 int err;
5744
5745 err = ccwgroup_create_dev(qeth_core_root_dev,
5746 &qeth_core_ccwgroup_driver, 3, buf);
5747
5748 return err ? err : count;
5749 }
5750 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5751
5752 static struct attribute *qeth_drv_attrs[] = {
5753 &driver_attr_group.attr,
5754 NULL,
5755 };
5756 static struct attribute_group qeth_drv_attr_group = {
5757 .attrs = qeth_drv_attrs,
5758 };
5759 static const struct attribute_group *qeth_drv_attr_groups[] = {
5760 &qeth_drv_attr_group,
5761 NULL,
5762 };
5763
5764 static struct {
5765 const char str[ETH_GSTRING_LEN];
5766 } qeth_ethtool_stats_keys[] = {
5767 /* 0 */{"rx skbs"},
5768 {"rx buffers"},
5769 {"tx skbs"},
5770 {"tx buffers"},
5771 {"tx skbs no packing"},
5772 {"tx buffers no packing"},
5773 {"tx skbs packing"},
5774 {"tx buffers packing"},
5775 {"tx sg skbs"},
5776 {"tx sg frags"},
5777 /* 10 */{"rx sg skbs"},
5778 {"rx sg frags"},
5779 {"rx sg page allocs"},
5780 {"tx large kbytes"},
5781 {"tx large count"},
5782 {"tx pk state ch n->p"},
5783 {"tx pk state ch p->n"},
5784 {"tx pk watermark low"},
5785 {"tx pk watermark high"},
5786 {"queue 0 buffer usage"},
5787 /* 20 */{"queue 1 buffer usage"},
5788 {"queue 2 buffer usage"},
5789 {"queue 3 buffer usage"},
5790 {"rx poll time"},
5791 {"rx poll count"},
5792 {"rx do_QDIO time"},
5793 {"rx do_QDIO count"},
5794 {"tx handler time"},
5795 {"tx handler count"},
5796 {"tx time"},
5797 /* 30 */{"tx count"},
5798 {"tx do_QDIO time"},
5799 {"tx do_QDIO count"},
5800 {"tx csum"},
5801 {"tx lin"},
5802 {"tx linfail"},
5803 {"cq handler count"},
5804 {"cq handler time"}
5805 };
5806
5807 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5808 {
5809 switch (stringset) {
5810 case ETH_SS_STATS:
5811 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5812 default:
5813 return -EINVAL;
5814 }
5815 }
5816 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5817
5818 void qeth_core_get_ethtool_stats(struct net_device *dev,
5819 struct ethtool_stats *stats, u64 *data)
5820 {
5821 struct qeth_card *card = dev->ml_priv;
5822 data[0] = card->stats.rx_packets -
5823 card->perf_stats.initial_rx_packets;
5824 data[1] = card->perf_stats.bufs_rec;
5825 data[2] = card->stats.tx_packets -
5826 card->perf_stats.initial_tx_packets;
5827 data[3] = card->perf_stats.bufs_sent;
5828 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5829 - card->perf_stats.skbs_sent_pack;
5830 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5831 data[6] = card->perf_stats.skbs_sent_pack;
5832 data[7] = card->perf_stats.bufs_sent_pack;
5833 data[8] = card->perf_stats.sg_skbs_sent;
5834 data[9] = card->perf_stats.sg_frags_sent;
5835 data[10] = card->perf_stats.sg_skbs_rx;
5836 data[11] = card->perf_stats.sg_frags_rx;
5837 data[12] = card->perf_stats.sg_alloc_page_rx;
5838 data[13] = (card->perf_stats.large_send_bytes >> 10);
5839 data[14] = card->perf_stats.large_send_cnt;
5840 data[15] = card->perf_stats.sc_dp_p;
5841 data[16] = card->perf_stats.sc_p_dp;
5842 data[17] = QETH_LOW_WATERMARK_PACK;
5843 data[18] = QETH_HIGH_WATERMARK_PACK;
5844 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5845 data[20] = (card->qdio.no_out_queues > 1) ?
5846 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5847 data[21] = (card->qdio.no_out_queues > 2) ?
5848 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5849 data[22] = (card->qdio.no_out_queues > 3) ?
5850 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5851 data[23] = card->perf_stats.inbound_time;
5852 data[24] = card->perf_stats.inbound_cnt;
5853 data[25] = card->perf_stats.inbound_do_qdio_time;
5854 data[26] = card->perf_stats.inbound_do_qdio_cnt;
5855 data[27] = card->perf_stats.outbound_handler_time;
5856 data[28] = card->perf_stats.outbound_handler_cnt;
5857 data[29] = card->perf_stats.outbound_time;
5858 data[30] = card->perf_stats.outbound_cnt;
5859 data[31] = card->perf_stats.outbound_do_qdio_time;
5860 data[32] = card->perf_stats.outbound_do_qdio_cnt;
5861 data[33] = card->perf_stats.tx_csum;
5862 data[34] = card->perf_stats.tx_lin;
5863 data[35] = card->perf_stats.tx_linfail;
5864 data[36] = card->perf_stats.cq_cnt;
5865 data[37] = card->perf_stats.cq_time;
5866 }
5867 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5868
5869 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5870 {
5871 switch (stringset) {
5872 case ETH_SS_STATS:
5873 memcpy(data, &qeth_ethtool_stats_keys,
5874 sizeof(qeth_ethtool_stats_keys));
5875 break;
5876 default:
5877 WARN_ON(1);
5878 break;
5879 }
5880 }
5881 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5882
5883 void qeth_core_get_drvinfo(struct net_device *dev,
5884 struct ethtool_drvinfo *info)
5885 {
5886 struct qeth_card *card = dev->ml_priv;
5887
5888 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5889 sizeof(info->driver));
5890 strlcpy(info->version, "1.0", sizeof(info->version));
5891 strlcpy(info->fw_version, card->info.mcl_level,
5892 sizeof(info->fw_version));
5893 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5894 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5895 }
5896 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5897
5898 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5899 /* Autoneg and full-duplex are supported and advertized uncondionally. */
5900 /* Always advertize and support all speeds up to specified, and only one */
5901 /* specified port type. */
5902 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5903 int maxspeed, int porttype)
5904 {
5905 int port_sup, port_adv, spd_sup, spd_adv;
5906
5907 switch (porttype) {
5908 case PORT_TP:
5909 port_sup = SUPPORTED_TP;
5910 port_adv = ADVERTISED_TP;
5911 break;
5912 case PORT_FIBRE:
5913 port_sup = SUPPORTED_FIBRE;
5914 port_adv = ADVERTISED_FIBRE;
5915 break;
5916 default:
5917 port_sup = SUPPORTED_TP;
5918 port_adv = ADVERTISED_TP;
5919 WARN_ON_ONCE(1);
5920 }
5921
5922 /* "Fallthrough" case'es ordered from high to low result in setting */
5923 /* flags cumulatively, starting from the specified speed and down to */
5924 /* the lowest possible. */
5925 spd_sup = 0;
5926 spd_adv = 0;
5927 switch (maxspeed) {
5928 case SPEED_10000:
5929 spd_sup |= SUPPORTED_10000baseT_Full;
5930 spd_adv |= ADVERTISED_10000baseT_Full;
5931 case SPEED_1000:
5932 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5933 spd_adv |= ADVERTISED_1000baseT_Half |
5934 ADVERTISED_1000baseT_Full;
5935 case SPEED_100:
5936 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5937 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5938 case SPEED_10:
5939 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5940 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5941 break;
5942 default:
5943 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5944 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5945 WARN_ON_ONCE(1);
5946 }
5947 ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5948 ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5949 }
5950
5951 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5952 struct ethtool_cmd *ecmd)
5953 {
5954 struct qeth_card *card = netdev->ml_priv;
5955 enum qeth_link_types link_type;
5956 struct carrier_info carrier_info;
5957 int rc;
5958 u32 speed;
5959
5960 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5961 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5962 else
5963 link_type = card->info.link_type;
5964
5965 ecmd->transceiver = XCVR_INTERNAL;
5966 ecmd->duplex = DUPLEX_FULL;
5967 ecmd->autoneg = AUTONEG_ENABLE;
5968
5969 switch (link_type) {
5970 case QETH_LINK_TYPE_FAST_ETH:
5971 case QETH_LINK_TYPE_LANE_ETH100:
5972 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5973 speed = SPEED_100;
5974 ecmd->port = PORT_TP;
5975 break;
5976
5977 case QETH_LINK_TYPE_GBIT_ETH:
5978 case QETH_LINK_TYPE_LANE_ETH1000:
5979 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5980 speed = SPEED_1000;
5981 ecmd->port = PORT_FIBRE;
5982 break;
5983
5984 case QETH_LINK_TYPE_10GBIT_ETH:
5985 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5986 speed = SPEED_10000;
5987 ecmd->port = PORT_FIBRE;
5988 break;
5989
5990 default:
5991 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5992 speed = SPEED_10;
5993 ecmd->port = PORT_TP;
5994 }
5995 ethtool_cmd_speed_set(ecmd, speed);
5996
5997 /* Check if we can obtain more accurate information. */
5998 /* If QUERY_CARD_INFO command is not supported or fails, */
5999 /* just return the heuristics that was filled above. */
6000 if (!qeth_card_hw_is_reachable(card))
6001 return -ENODEV;
6002 rc = qeth_query_card_info(card, &carrier_info);
6003 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6004 return 0;
6005 if (rc) /* report error from the hardware operation */
6006 return rc;
6007 /* on success, fill in the information got from the hardware */
6008
6009 netdev_dbg(netdev,
6010 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6011 carrier_info.card_type,
6012 carrier_info.port_mode,
6013 carrier_info.port_speed);
6014
6015 /* Update attributes for which we've obtained more authoritative */
6016 /* information, leave the rest the way they where filled above. */
6017 switch (carrier_info.card_type) {
6018 case CARD_INFO_TYPE_1G_COPPER_A:
6019 case CARD_INFO_TYPE_1G_COPPER_B:
6020 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
6021 ecmd->port = PORT_TP;
6022 break;
6023 case CARD_INFO_TYPE_1G_FIBRE_A:
6024 case CARD_INFO_TYPE_1G_FIBRE_B:
6025 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
6026 ecmd->port = PORT_FIBRE;
6027 break;
6028 case CARD_INFO_TYPE_10G_FIBRE_A:
6029 case CARD_INFO_TYPE_10G_FIBRE_B:
6030 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
6031 ecmd->port = PORT_FIBRE;
6032 break;
6033 }
6034
6035 switch (carrier_info.port_mode) {
6036 case CARD_INFO_PORTM_FULLDUPLEX:
6037 ecmd->duplex = DUPLEX_FULL;
6038 break;
6039 case CARD_INFO_PORTM_HALFDUPLEX:
6040 ecmd->duplex = DUPLEX_HALF;
6041 break;
6042 }
6043
6044 switch (carrier_info.port_speed) {
6045 case CARD_INFO_PORTS_10M:
6046 speed = SPEED_10;
6047 break;
6048 case CARD_INFO_PORTS_100M:
6049 speed = SPEED_100;
6050 break;
6051 case CARD_INFO_PORTS_1G:
6052 speed = SPEED_1000;
6053 break;
6054 case CARD_INFO_PORTS_10G:
6055 speed = SPEED_10000;
6056 break;
6057 }
6058 ethtool_cmd_speed_set(ecmd, speed);
6059
6060 return 0;
6061 }
6062 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
6063
6064 /* Callback to handle checksum offload command reply from OSA card.
6065 * Verify that required features have been enabled on the card.
6066 * Return error in hdr->return_code as this value is checked by caller.
6067 *
6068 * Always returns zero to indicate no further messages from the OSA card.
6069 */
6070 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6071 struct qeth_reply *reply,
6072 unsigned long data)
6073 {
6074 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6075 struct qeth_checksum_cmd *chksum_cb =
6076 (struct qeth_checksum_cmd *)reply->param;
6077
6078 QETH_CARD_TEXT(card, 4, "chkdoccb");
6079 if (cmd->hdr.return_code)
6080 return 0;
6081
6082 memset(chksum_cb, 0, sizeof(*chksum_cb));
6083 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6084 chksum_cb->supported =
6085 cmd->data.setassparms.data.chksum.supported;
6086 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6087 }
6088 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6089 chksum_cb->supported =
6090 cmd->data.setassparms.data.chksum.supported;
6091 chksum_cb->enabled =
6092 cmd->data.setassparms.data.chksum.enabled;
6093 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6094 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6095 }
6096 return 0;
6097 }
6098
6099 /* Send command to OSA card and check results. */
6100 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6101 enum qeth_ipa_funcs ipa_func,
6102 __u16 cmd_code, long data,
6103 struct qeth_checksum_cmd *chksum_cb)
6104 {
6105 struct qeth_cmd_buffer *iob;
6106 int rc = -ENOMEM;
6107
6108 QETH_CARD_TEXT(card, 4, "chkdocmd");
6109 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6110 sizeof(__u32), QETH_PROT_IPV4);
6111 if (iob)
6112 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6113 qeth_ipa_checksum_run_cmd_cb,
6114 chksum_cb);
6115 return rc;
6116 }
6117
6118 static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
6119 {
6120 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR |
6121 QETH_IPA_CHECKSUM_UDP |
6122 QETH_IPA_CHECKSUM_TCP;
6123 struct qeth_checksum_cmd chksum_cb;
6124 int rc;
6125
6126 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6127 &chksum_cb);
6128 if (!rc) {
6129 if ((required_features & chksum_cb.supported) !=
6130 required_features)
6131 rc = -EIO;
6132 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6133 cstype == IPA_INBOUND_CHECKSUM)
6134 dev_warn(&card->gdev->dev,
6135 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6136 QETH_CARD_IFNAME(card));
6137 }
6138 if (rc) {
6139 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6140 dev_warn(&card->gdev->dev,
6141 "Starting HW checksumming for %s failed, using SW checksumming\n",
6142 QETH_CARD_IFNAME(card));
6143 return rc;
6144 }
6145 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6146 chksum_cb.supported, &chksum_cb);
6147 if (!rc) {
6148 if ((required_features & chksum_cb.enabled) !=
6149 required_features)
6150 rc = -EIO;
6151 }
6152 if (rc) {
6153 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6154 dev_warn(&card->gdev->dev,
6155 "Enabling HW checksumming for %s failed, using SW checksumming\n",
6156 QETH_CARD_IFNAME(card));
6157 return rc;
6158 }
6159
6160 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
6161 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
6162 return 0;
6163 }
6164
6165 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
6166 {
6167 int rc = (on) ? qeth_send_checksum_on(card, cstype)
6168 : qeth_send_simple_setassparms(card, cstype,
6169 IPA_CMD_ASS_STOP, 0);
6170 return rc ? -EIO : 0;
6171 }
6172
6173 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6174 {
6175 int rc;
6176
6177 QETH_CARD_TEXT(card, 3, "sttso");
6178
6179 if (on) {
6180 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6181 IPA_CMD_ASS_START, 0);
6182 if (rc) {
6183 dev_warn(&card->gdev->dev,
6184 "Starting outbound TCP segmentation offload for %s failed\n",
6185 QETH_CARD_IFNAME(card));
6186 return -EIO;
6187 }
6188 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6189 } else {
6190 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6191 IPA_CMD_ASS_STOP, 0);
6192 }
6193 return rc;
6194 }
6195
6196 /* try to restore device features on a device after recovery */
6197 int qeth_recover_features(struct net_device *dev)
6198 {
6199 struct qeth_card *card = dev->ml_priv;
6200 netdev_features_t recover = dev->features;
6201
6202 if (recover & NETIF_F_IP_CSUM) {
6203 if (qeth_set_ipa_csum(card, 1, IPA_OUTBOUND_CHECKSUM))
6204 recover ^= NETIF_F_IP_CSUM;
6205 }
6206 if (recover & NETIF_F_RXCSUM) {
6207 if (qeth_set_ipa_csum(card, 1, IPA_INBOUND_CHECKSUM))
6208 recover ^= NETIF_F_RXCSUM;
6209 }
6210 if (recover & NETIF_F_TSO) {
6211 if (qeth_set_ipa_tso(card, 1))
6212 recover ^= NETIF_F_TSO;
6213 }
6214
6215 if (recover == dev->features)
6216 return 0;
6217
6218 dev_warn(&card->gdev->dev,
6219 "Device recovery failed to restore all offload features\n");
6220 dev->features = recover;
6221 return -EIO;
6222 }
6223 EXPORT_SYMBOL_GPL(qeth_recover_features);
6224
6225 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6226 {
6227 struct qeth_card *card = dev->ml_priv;
6228 netdev_features_t changed = dev->features ^ features;
6229 int rc = 0;
6230
6231 QETH_DBF_TEXT(SETUP, 2, "setfeat");
6232 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6233
6234 if ((changed & NETIF_F_IP_CSUM)) {
6235 rc = qeth_set_ipa_csum(card,
6236 features & NETIF_F_IP_CSUM ? 1 : 0,
6237 IPA_OUTBOUND_CHECKSUM);
6238 if (rc)
6239 changed ^= NETIF_F_IP_CSUM;
6240 }
6241 if ((changed & NETIF_F_RXCSUM)) {
6242 rc = qeth_set_ipa_csum(card,
6243 features & NETIF_F_RXCSUM ? 1 : 0,
6244 IPA_INBOUND_CHECKSUM);
6245 if (rc)
6246 changed ^= NETIF_F_RXCSUM;
6247 }
6248 if ((changed & NETIF_F_TSO)) {
6249 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6250 if (rc)
6251 changed ^= NETIF_F_TSO;
6252 }
6253
6254 /* everything changed successfully? */
6255 if ((dev->features ^ features) == changed)
6256 return 0;
6257 /* something went wrong. save changed features and return error */
6258 dev->features ^= changed;
6259 return -EIO;
6260 }
6261 EXPORT_SYMBOL_GPL(qeth_set_features);
6262
6263 netdev_features_t qeth_fix_features(struct net_device *dev,
6264 netdev_features_t features)
6265 {
6266 struct qeth_card *card = dev->ml_priv;
6267
6268 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6269 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6270 features &= ~NETIF_F_IP_CSUM;
6271 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6272 features &= ~NETIF_F_RXCSUM;
6273 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
6274 features &= ~NETIF_F_TSO;
6275 dev_info(&card->gdev->dev, "Outbound TSO not supported on %s\n",
6276 QETH_CARD_IFNAME(card));
6277 }
6278 /* if the card isn't up, remove features that require hw changes */
6279 if (card->state == CARD_STATE_DOWN ||
6280 card->state == CARD_STATE_RECOVER)
6281 features = features & ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
6282 NETIF_F_TSO);
6283 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6284 return features;
6285 }
6286 EXPORT_SYMBOL_GPL(qeth_fix_features);
6287
6288 static int __init qeth_core_init(void)
6289 {
6290 int rc;
6291
6292 pr_info("loading core functions\n");
6293 INIT_LIST_HEAD(&qeth_core_card_list.list);
6294 INIT_LIST_HEAD(&qeth_dbf_list);
6295 rwlock_init(&qeth_core_card_list.rwlock);
6296 mutex_init(&qeth_mod_mutex);
6297
6298 qeth_wq = create_singlethread_workqueue("qeth_wq");
6299
6300 rc = qeth_register_dbf_views();
6301 if (rc)
6302 goto out_err;
6303 qeth_core_root_dev = root_device_register("qeth");
6304 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6305 if (rc)
6306 goto register_err;
6307 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6308 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6309 if (!qeth_core_header_cache) {
6310 rc = -ENOMEM;
6311 goto slab_err;
6312 }
6313 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6314 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6315 if (!qeth_qdio_outbuf_cache) {
6316 rc = -ENOMEM;
6317 goto cqslab_err;
6318 }
6319 rc = ccw_driver_register(&qeth_ccw_driver);
6320 if (rc)
6321 goto ccw_err;
6322 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6323 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6324 if (rc)
6325 goto ccwgroup_err;
6326
6327 return 0;
6328
6329 ccwgroup_err:
6330 ccw_driver_unregister(&qeth_ccw_driver);
6331 ccw_err:
6332 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6333 cqslab_err:
6334 kmem_cache_destroy(qeth_core_header_cache);
6335 slab_err:
6336 root_device_unregister(qeth_core_root_dev);
6337 register_err:
6338 qeth_unregister_dbf_views();
6339 out_err:
6340 pr_err("Initializing the qeth device driver failed\n");
6341 return rc;
6342 }
6343
6344 static void __exit qeth_core_exit(void)
6345 {
6346 qeth_clear_dbf_list();
6347 destroy_workqueue(qeth_wq);
6348 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6349 ccw_driver_unregister(&qeth_ccw_driver);
6350 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6351 kmem_cache_destroy(qeth_core_header_cache);
6352 root_device_unregister(qeth_core_root_dev);
6353 qeth_unregister_dbf_views();
6354 pr_info("core functions removed\n");
6355 }
6356
6357 module_init(qeth_core_init);
6358 module_exit(qeth_core_exit);
6359 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6360 MODULE_DESCRIPTION("qeth core functions");
6361 MODULE_LICENSE("GPL");
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