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s390/qeth: switch on SG by default for IQD devices
[thirdparty/kernel/stable.git] / drivers / s390 / net / qeth_core_main.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright IBM Corp. 2007, 2009
4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
10 #define KMSG_COMPONENT "qeth"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
13 #include <linux/compat.h>
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/ip.h>
20 #include <linux/tcp.h>
21 #include <linux/mii.h>
22 #include <linux/kthread.h>
23 #include <linux/slab.h>
24 #include <linux/if_vlan.h>
25 #include <linux/netdevice.h>
26 #include <linux/netdev_features.h>
27 #include <linux/skbuff.h>
28
29 #include <net/iucv/af_iucv.h>
30 #include <net/dsfield.h>
31
32 #include <asm/ebcdic.h>
33 #include <asm/chpid.h>
34 #include <asm/io.h>
35 #include <asm/sysinfo.h>
36 #include <asm/diag.h>
37 #include <asm/cio.h>
38 #include <asm/ccwdev.h>
39 #include <asm/cpcmd.h>
40
41 #include "qeth_core.h"
42
43 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
44 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
45 /* N P A M L V H */
46 [QETH_DBF_SETUP] = {"qeth_setup",
47 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
48 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
49 &debug_sprintf_view, NULL},
50 [QETH_DBF_CTRL] = {"qeth_control",
51 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
52 };
53 EXPORT_SYMBOL_GPL(qeth_dbf);
54
55 struct qeth_card_list_struct qeth_core_card_list;
56 EXPORT_SYMBOL_GPL(qeth_core_card_list);
57 struct kmem_cache *qeth_core_header_cache;
58 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
59 static struct kmem_cache *qeth_qdio_outbuf_cache;
60
61 static struct device *qeth_core_root_dev;
62 static struct lock_class_key qdio_out_skb_queue_key;
63 static struct mutex qeth_mod_mutex;
64
65 static void qeth_send_control_data_cb(struct qeth_channel *,
66 struct qeth_cmd_buffer *);
67 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
68 static void qeth_free_buffer_pool(struct qeth_card *);
69 static int qeth_qdio_establish(struct qeth_card *);
70 static void qeth_free_qdio_buffers(struct qeth_card *);
71 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
72 struct qeth_qdio_out_buffer *buf,
73 enum iucv_tx_notify notification);
74 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
75 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
76
77 struct workqueue_struct *qeth_wq;
78 EXPORT_SYMBOL_GPL(qeth_wq);
79
80 int qeth_card_hw_is_reachable(struct qeth_card *card)
81 {
82 return (card->state == CARD_STATE_SOFTSETUP) ||
83 (card->state == CARD_STATE_UP);
84 }
85 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
86
87 static void qeth_close_dev_handler(struct work_struct *work)
88 {
89 struct qeth_card *card;
90
91 card = container_of(work, struct qeth_card, close_dev_work);
92 QETH_CARD_TEXT(card, 2, "cldevhdl");
93 rtnl_lock();
94 dev_close(card->dev);
95 rtnl_unlock();
96 ccwgroup_set_offline(card->gdev);
97 }
98
99 void qeth_close_dev(struct qeth_card *card)
100 {
101 QETH_CARD_TEXT(card, 2, "cldevsubm");
102 queue_work(qeth_wq, &card->close_dev_work);
103 }
104 EXPORT_SYMBOL_GPL(qeth_close_dev);
105
106 static const char *qeth_get_cardname(struct qeth_card *card)
107 {
108 if (card->info.guestlan) {
109 switch (card->info.type) {
110 case QETH_CARD_TYPE_OSD:
111 return " Virtual NIC QDIO";
112 case QETH_CARD_TYPE_IQD:
113 return " Virtual NIC Hiper";
114 case QETH_CARD_TYPE_OSM:
115 return " Virtual NIC QDIO - OSM";
116 case QETH_CARD_TYPE_OSX:
117 return " Virtual NIC QDIO - OSX";
118 default:
119 return " unknown";
120 }
121 } else {
122 switch (card->info.type) {
123 case QETH_CARD_TYPE_OSD:
124 return " OSD Express";
125 case QETH_CARD_TYPE_IQD:
126 return " HiperSockets";
127 case QETH_CARD_TYPE_OSN:
128 return " OSN QDIO";
129 case QETH_CARD_TYPE_OSM:
130 return " OSM QDIO";
131 case QETH_CARD_TYPE_OSX:
132 return " OSX QDIO";
133 default:
134 return " unknown";
135 }
136 }
137 return " n/a";
138 }
139
140 /* max length to be returned: 14 */
141 const char *qeth_get_cardname_short(struct qeth_card *card)
142 {
143 if (card->info.guestlan) {
144 switch (card->info.type) {
145 case QETH_CARD_TYPE_OSD:
146 return "Virt.NIC QDIO";
147 case QETH_CARD_TYPE_IQD:
148 return "Virt.NIC Hiper";
149 case QETH_CARD_TYPE_OSM:
150 return "Virt.NIC OSM";
151 case QETH_CARD_TYPE_OSX:
152 return "Virt.NIC OSX";
153 default:
154 return "unknown";
155 }
156 } else {
157 switch (card->info.type) {
158 case QETH_CARD_TYPE_OSD:
159 switch (card->info.link_type) {
160 case QETH_LINK_TYPE_FAST_ETH:
161 return "OSD_100";
162 case QETH_LINK_TYPE_HSTR:
163 return "HSTR";
164 case QETH_LINK_TYPE_GBIT_ETH:
165 return "OSD_1000";
166 case QETH_LINK_TYPE_10GBIT_ETH:
167 return "OSD_10GIG";
168 case QETH_LINK_TYPE_LANE_ETH100:
169 return "OSD_FE_LANE";
170 case QETH_LINK_TYPE_LANE_TR:
171 return "OSD_TR_LANE";
172 case QETH_LINK_TYPE_LANE_ETH1000:
173 return "OSD_GbE_LANE";
174 case QETH_LINK_TYPE_LANE:
175 return "OSD_ATM_LANE";
176 default:
177 return "OSD_Express";
178 }
179 case QETH_CARD_TYPE_IQD:
180 return "HiperSockets";
181 case QETH_CARD_TYPE_OSN:
182 return "OSN";
183 case QETH_CARD_TYPE_OSM:
184 return "OSM_1000";
185 case QETH_CARD_TYPE_OSX:
186 return "OSX_10GIG";
187 default:
188 return "unknown";
189 }
190 }
191 return "n/a";
192 }
193
194 void qeth_set_recovery_task(struct qeth_card *card)
195 {
196 card->recovery_task = current;
197 }
198 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
199
200 void qeth_clear_recovery_task(struct qeth_card *card)
201 {
202 card->recovery_task = NULL;
203 }
204 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
205
206 static bool qeth_is_recovery_task(const struct qeth_card *card)
207 {
208 return card->recovery_task == current;
209 }
210
211 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
212 int clear_start_mask)
213 {
214 unsigned long flags;
215
216 spin_lock_irqsave(&card->thread_mask_lock, flags);
217 card->thread_allowed_mask = threads;
218 if (clear_start_mask)
219 card->thread_start_mask &= threads;
220 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
221 wake_up(&card->wait_q);
222 }
223 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
224
225 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
226 {
227 unsigned long flags;
228 int rc = 0;
229
230 spin_lock_irqsave(&card->thread_mask_lock, flags);
231 rc = (card->thread_running_mask & threads);
232 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
233 return rc;
234 }
235 EXPORT_SYMBOL_GPL(qeth_threads_running);
236
237 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
238 {
239 if (qeth_is_recovery_task(card))
240 return 0;
241 return wait_event_interruptible(card->wait_q,
242 qeth_threads_running(card, threads) == 0);
243 }
244 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
245
246 void qeth_clear_working_pool_list(struct qeth_card *card)
247 {
248 struct qeth_buffer_pool_entry *pool_entry, *tmp;
249
250 QETH_CARD_TEXT(card, 5, "clwrklst");
251 list_for_each_entry_safe(pool_entry, tmp,
252 &card->qdio.in_buf_pool.entry_list, list){
253 list_del(&pool_entry->list);
254 }
255 }
256 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
257
258 static int qeth_alloc_buffer_pool(struct qeth_card *card)
259 {
260 struct qeth_buffer_pool_entry *pool_entry;
261 void *ptr;
262 int i, j;
263
264 QETH_CARD_TEXT(card, 5, "alocpool");
265 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
266 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
267 if (!pool_entry) {
268 qeth_free_buffer_pool(card);
269 return -ENOMEM;
270 }
271 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
272 ptr = (void *) __get_free_page(GFP_KERNEL);
273 if (!ptr) {
274 while (j > 0)
275 free_page((unsigned long)
276 pool_entry->elements[--j]);
277 kfree(pool_entry);
278 qeth_free_buffer_pool(card);
279 return -ENOMEM;
280 }
281 pool_entry->elements[j] = ptr;
282 }
283 list_add(&pool_entry->init_list,
284 &card->qdio.init_pool.entry_list);
285 }
286 return 0;
287 }
288
289 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
290 {
291 QETH_CARD_TEXT(card, 2, "realcbp");
292
293 if ((card->state != CARD_STATE_DOWN) &&
294 (card->state != CARD_STATE_RECOVER))
295 return -EPERM;
296
297 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
298 qeth_clear_working_pool_list(card);
299 qeth_free_buffer_pool(card);
300 card->qdio.in_buf_pool.buf_count = bufcnt;
301 card->qdio.init_pool.buf_count = bufcnt;
302 return qeth_alloc_buffer_pool(card);
303 }
304 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
305
306 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
307 {
308 if (!q)
309 return;
310
311 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
312 kfree(q);
313 }
314
315 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
316 {
317 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
318 int i;
319
320 if (!q)
321 return NULL;
322
323 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
324 kfree(q);
325 return NULL;
326 }
327
328 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
329 q->bufs[i].buffer = q->qdio_bufs[i];
330
331 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
332 return q;
333 }
334
335 static int qeth_cq_init(struct qeth_card *card)
336 {
337 int rc;
338
339 if (card->options.cq == QETH_CQ_ENABLED) {
340 QETH_DBF_TEXT(SETUP, 2, "cqinit");
341 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
342 QDIO_MAX_BUFFERS_PER_Q);
343 card->qdio.c_q->next_buf_to_init = 127;
344 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
345 card->qdio.no_in_queues - 1, 0,
346 127);
347 if (rc) {
348 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
349 goto out;
350 }
351 }
352 rc = 0;
353 out:
354 return rc;
355 }
356
357 static int qeth_alloc_cq(struct qeth_card *card)
358 {
359 int rc;
360
361 if (card->options.cq == QETH_CQ_ENABLED) {
362 int i;
363 struct qdio_outbuf_state *outbuf_states;
364
365 QETH_DBF_TEXT(SETUP, 2, "cqon");
366 card->qdio.c_q = qeth_alloc_qdio_queue();
367 if (!card->qdio.c_q) {
368 rc = -1;
369 goto kmsg_out;
370 }
371 card->qdio.no_in_queues = 2;
372 card->qdio.out_bufstates =
373 kcalloc(card->qdio.no_out_queues *
374 QDIO_MAX_BUFFERS_PER_Q,
375 sizeof(struct qdio_outbuf_state),
376 GFP_KERNEL);
377 outbuf_states = card->qdio.out_bufstates;
378 if (outbuf_states == NULL) {
379 rc = -1;
380 goto free_cq_out;
381 }
382 for (i = 0; i < card->qdio.no_out_queues; ++i) {
383 card->qdio.out_qs[i]->bufstates = outbuf_states;
384 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
385 }
386 } else {
387 QETH_DBF_TEXT(SETUP, 2, "nocq");
388 card->qdio.c_q = NULL;
389 card->qdio.no_in_queues = 1;
390 }
391 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
392 rc = 0;
393 out:
394 return rc;
395 free_cq_out:
396 qeth_free_qdio_queue(card->qdio.c_q);
397 card->qdio.c_q = NULL;
398 kmsg_out:
399 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
400 goto out;
401 }
402
403 static void qeth_free_cq(struct qeth_card *card)
404 {
405 if (card->qdio.c_q) {
406 --card->qdio.no_in_queues;
407 qeth_free_qdio_queue(card->qdio.c_q);
408 card->qdio.c_q = NULL;
409 }
410 kfree(card->qdio.out_bufstates);
411 card->qdio.out_bufstates = NULL;
412 }
413
414 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
415 int delayed)
416 {
417 enum iucv_tx_notify n;
418
419 switch (sbalf15) {
420 case 0:
421 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
422 break;
423 case 4:
424 case 16:
425 case 17:
426 case 18:
427 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
428 TX_NOTIFY_UNREACHABLE;
429 break;
430 default:
431 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
432 TX_NOTIFY_GENERALERROR;
433 break;
434 }
435
436 return n;
437 }
438
439 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
440 int forced_cleanup)
441 {
442 if (q->card->options.cq != QETH_CQ_ENABLED)
443 return;
444
445 if (q->bufs[bidx]->next_pending != NULL) {
446 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
447 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
448
449 while (c) {
450 if (forced_cleanup ||
451 atomic_read(&c->state) ==
452 QETH_QDIO_BUF_HANDLED_DELAYED) {
453 struct qeth_qdio_out_buffer *f = c;
454 QETH_CARD_TEXT(f->q->card, 5, "fp");
455 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
456 /* release here to avoid interleaving between
457 outbound tasklet and inbound tasklet
458 regarding notifications and lifecycle */
459 qeth_release_skbs(c);
460
461 c = f->next_pending;
462 WARN_ON_ONCE(head->next_pending != f);
463 head->next_pending = c;
464 kmem_cache_free(qeth_qdio_outbuf_cache, f);
465 } else {
466 head = c;
467 c = c->next_pending;
468 }
469
470 }
471 }
472 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
473 QETH_QDIO_BUF_HANDLED_DELAYED)) {
474 /* for recovery situations */
475 qeth_init_qdio_out_buf(q, bidx);
476 QETH_CARD_TEXT(q->card, 2, "clprecov");
477 }
478 }
479
480
481 static void qeth_qdio_handle_aob(struct qeth_card *card,
482 unsigned long phys_aob_addr)
483 {
484 struct qaob *aob;
485 struct qeth_qdio_out_buffer *buffer;
486 enum iucv_tx_notify notification;
487 unsigned int i;
488
489 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
490 QETH_CARD_TEXT(card, 5, "haob");
491 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
492 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
493 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
494
495 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
496 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
497 notification = TX_NOTIFY_OK;
498 } else {
499 WARN_ON_ONCE(atomic_read(&buffer->state) !=
500 QETH_QDIO_BUF_PENDING);
501 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
502 notification = TX_NOTIFY_DELAYED_OK;
503 }
504
505 if (aob->aorc != 0) {
506 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
507 notification = qeth_compute_cq_notification(aob->aorc, 1);
508 }
509 qeth_notify_skbs(buffer->q, buffer, notification);
510
511 /* Free dangling allocations. The attached skbs are handled by
512 * qeth_cleanup_handled_pending().
513 */
514 for (i = 0;
515 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
516 i++) {
517 if (aob->sba[i] && buffer->is_header[i])
518 kmem_cache_free(qeth_core_header_cache,
519 (void *) aob->sba[i]);
520 }
521 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
522
523 qdio_release_aob(aob);
524 }
525
526 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
527 {
528 return card->options.cq == QETH_CQ_ENABLED &&
529 card->qdio.c_q != NULL &&
530 queue != 0 &&
531 queue == card->qdio.no_in_queues - 1;
532 }
533
534 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u32 len, void *data)
535 {
536 ccw->cmd_code = cmd_code;
537 ccw->flags = CCW_FLAG_SLI;
538 ccw->count = len;
539 ccw->cda = (__u32) __pa(data);
540 }
541
542 static int __qeth_issue_next_read(struct qeth_card *card)
543 {
544 struct qeth_channel *channel = &card->read;
545 struct qeth_cmd_buffer *iob;
546 int rc;
547
548 QETH_CARD_TEXT(card, 5, "issnxrd");
549 if (channel->state != CH_STATE_UP)
550 return -EIO;
551 iob = qeth_get_buffer(channel);
552 if (!iob) {
553 dev_warn(&card->gdev->dev, "The qeth device driver "
554 "failed to recover an error on the device\n");
555 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
556 "available\n", dev_name(&card->gdev->dev));
557 return -ENOMEM;
558 }
559 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data);
560 QETH_CARD_TEXT(card, 6, "noirqpnd");
561 rc = ccw_device_start(channel->ccwdev, channel->ccw,
562 (addr_t) iob, 0, 0);
563 if (rc) {
564 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
565 "rc=%i\n", dev_name(&card->gdev->dev), rc);
566 atomic_set(&channel->irq_pending, 0);
567 card->read_or_write_problem = 1;
568 qeth_schedule_recovery(card);
569 wake_up(&card->wait_q);
570 }
571 return rc;
572 }
573
574 static int qeth_issue_next_read(struct qeth_card *card)
575 {
576 int ret;
577
578 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
579 ret = __qeth_issue_next_read(card);
580 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
581
582 return ret;
583 }
584
585 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
586 {
587 struct qeth_reply *reply;
588
589 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
590 if (reply) {
591 refcount_set(&reply->refcnt, 1);
592 atomic_set(&reply->received, 0);
593 reply->card = card;
594 }
595 return reply;
596 }
597
598 static void qeth_get_reply(struct qeth_reply *reply)
599 {
600 refcount_inc(&reply->refcnt);
601 }
602
603 static void qeth_put_reply(struct qeth_reply *reply)
604 {
605 if (refcount_dec_and_test(&reply->refcnt))
606 kfree(reply);
607 }
608
609 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
610 struct qeth_card *card)
611 {
612 char *ipa_name;
613 int com = cmd->hdr.command;
614 ipa_name = qeth_get_ipa_cmd_name(com);
615 if (rc)
616 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
617 "x%X \"%s\"\n",
618 ipa_name, com, dev_name(&card->gdev->dev),
619 QETH_CARD_IFNAME(card), rc,
620 qeth_get_ipa_msg(rc));
621 else
622 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
623 ipa_name, com, dev_name(&card->gdev->dev),
624 QETH_CARD_IFNAME(card));
625 }
626
627 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
628 struct qeth_cmd_buffer *iob)
629 {
630 struct qeth_ipa_cmd *cmd = NULL;
631
632 QETH_CARD_TEXT(card, 5, "chkipad");
633 if (IS_IPA(iob->data)) {
634 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
635 if (IS_IPA_REPLY(cmd)) {
636 if (cmd->hdr.command != IPA_CMD_SETCCID &&
637 cmd->hdr.command != IPA_CMD_DELCCID &&
638 cmd->hdr.command != IPA_CMD_MODCCID &&
639 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
640 qeth_issue_ipa_msg(cmd,
641 cmd->hdr.return_code, card);
642 return cmd;
643 } else {
644 switch (cmd->hdr.command) {
645 case IPA_CMD_STOPLAN:
646 if (cmd->hdr.return_code ==
647 IPA_RC_VEPA_TO_VEB_TRANSITION) {
648 dev_err(&card->gdev->dev,
649 "Interface %s is down because the "
650 "adjacent port is no longer in "
651 "reflective relay mode\n",
652 QETH_CARD_IFNAME(card));
653 qeth_close_dev(card);
654 } else {
655 dev_warn(&card->gdev->dev,
656 "The link for interface %s on CHPID"
657 " 0x%X failed\n",
658 QETH_CARD_IFNAME(card),
659 card->info.chpid);
660 qeth_issue_ipa_msg(cmd,
661 cmd->hdr.return_code, card);
662 }
663 card->lan_online = 0;
664 netif_carrier_off(card->dev);
665 return NULL;
666 case IPA_CMD_STARTLAN:
667 dev_info(&card->gdev->dev,
668 "The link for %s on CHPID 0x%X has"
669 " been restored\n",
670 QETH_CARD_IFNAME(card),
671 card->info.chpid);
672 netif_carrier_on(card->dev);
673 card->lan_online = 1;
674 if (card->info.hwtrap)
675 card->info.hwtrap = 2;
676 qeth_schedule_recovery(card);
677 return NULL;
678 case IPA_CMD_SETBRIDGEPORT_IQD:
679 case IPA_CMD_SETBRIDGEPORT_OSA:
680 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
681 if (card->discipline->control_event_handler
682 (card, cmd))
683 return cmd;
684 else
685 return NULL;
686 case IPA_CMD_MODCCID:
687 return cmd;
688 case IPA_CMD_REGISTER_LOCAL_ADDR:
689 QETH_CARD_TEXT(card, 3, "irla");
690 break;
691 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
692 QETH_CARD_TEXT(card, 3, "urla");
693 break;
694 default:
695 QETH_DBF_MESSAGE(2, "Received data is IPA "
696 "but not a reply!\n");
697 break;
698 }
699 }
700 }
701 return cmd;
702 }
703
704 void qeth_clear_ipacmd_list(struct qeth_card *card)
705 {
706 struct qeth_reply *reply, *r;
707 unsigned long flags;
708
709 QETH_CARD_TEXT(card, 4, "clipalst");
710
711 spin_lock_irqsave(&card->lock, flags);
712 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
713 qeth_get_reply(reply);
714 reply->rc = -EIO;
715 atomic_inc(&reply->received);
716 list_del_init(&reply->list);
717 wake_up(&reply->wait_q);
718 qeth_put_reply(reply);
719 }
720 spin_unlock_irqrestore(&card->lock, flags);
721 }
722 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
723
724 static int qeth_check_idx_response(struct qeth_card *card,
725 unsigned char *buffer)
726 {
727 if (!buffer)
728 return 0;
729
730 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
731 if ((buffer[2] & 0xc0) == 0xc0) {
732 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#02x\n",
733 buffer[4]);
734 QETH_CARD_TEXT(card, 2, "ckidxres");
735 QETH_CARD_TEXT(card, 2, " idxterm");
736 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
737 if (buffer[4] == 0xf6) {
738 dev_err(&card->gdev->dev,
739 "The qeth device is not configured "
740 "for the OSI layer required by z/VM\n");
741 return -EPERM;
742 }
743 return -EIO;
744 }
745 return 0;
746 }
747
748 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
749 {
750 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
751 dev_get_drvdata(&cdev->dev))->dev);
752 return card;
753 }
754
755 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
756 {
757 __u8 index;
758
759 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
760 index = channel->io_buf_no;
761 do {
762 if (channel->iob[index].state == BUF_STATE_FREE) {
763 channel->iob[index].state = BUF_STATE_LOCKED;
764 channel->io_buf_no = (channel->io_buf_no + 1) %
765 QETH_CMD_BUFFER_NO;
766 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
767 return channel->iob + index;
768 }
769 index = (index + 1) % QETH_CMD_BUFFER_NO;
770 } while (index != channel->io_buf_no);
771
772 return NULL;
773 }
774
775 void qeth_release_buffer(struct qeth_channel *channel,
776 struct qeth_cmd_buffer *iob)
777 {
778 unsigned long flags;
779
780 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
781 spin_lock_irqsave(&channel->iob_lock, flags);
782 memset(iob->data, 0, QETH_BUFSIZE);
783 iob->state = BUF_STATE_FREE;
784 iob->callback = qeth_send_control_data_cb;
785 iob->rc = 0;
786 spin_unlock_irqrestore(&channel->iob_lock, flags);
787 wake_up(&channel->wait_q);
788 }
789 EXPORT_SYMBOL_GPL(qeth_release_buffer);
790
791 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
792 {
793 struct qeth_cmd_buffer *buffer = NULL;
794 unsigned long flags;
795
796 spin_lock_irqsave(&channel->iob_lock, flags);
797 buffer = __qeth_get_buffer(channel);
798 spin_unlock_irqrestore(&channel->iob_lock, flags);
799 return buffer;
800 }
801
802 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
803 {
804 struct qeth_cmd_buffer *buffer;
805 wait_event(channel->wait_q,
806 ((buffer = qeth_get_buffer(channel)) != NULL));
807 return buffer;
808 }
809 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
810
811 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
812 {
813 int cnt;
814
815 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
816 qeth_release_buffer(channel, &channel->iob[cnt]);
817 channel->io_buf_no = 0;
818 }
819 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
820
821 static void qeth_send_control_data_cb(struct qeth_channel *channel,
822 struct qeth_cmd_buffer *iob)
823 {
824 struct qeth_card *card;
825 struct qeth_reply *reply, *r;
826 struct qeth_ipa_cmd *cmd;
827 unsigned long flags;
828 int keep_reply;
829 int rc = 0;
830
831 card = CARD_FROM_CDEV(channel->ccwdev);
832 QETH_CARD_TEXT(card, 4, "sndctlcb");
833 rc = qeth_check_idx_response(card, iob->data);
834 switch (rc) {
835 case 0:
836 break;
837 case -EIO:
838 qeth_clear_ipacmd_list(card);
839 qeth_schedule_recovery(card);
840 /* fall through */
841 default:
842 goto out;
843 }
844
845 cmd = qeth_check_ipa_data(card, iob);
846 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
847 goto out;
848 /*in case of OSN : check if cmd is set */
849 if (card->info.type == QETH_CARD_TYPE_OSN &&
850 cmd &&
851 cmd->hdr.command != IPA_CMD_STARTLAN &&
852 card->osn_info.assist_cb != NULL) {
853 card->osn_info.assist_cb(card->dev, cmd);
854 goto out;
855 }
856
857 spin_lock_irqsave(&card->lock, flags);
858 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
859 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
860 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
861 qeth_get_reply(reply);
862 list_del_init(&reply->list);
863 spin_unlock_irqrestore(&card->lock, flags);
864 keep_reply = 0;
865 if (reply->callback != NULL) {
866 if (cmd) {
867 reply->offset = (__u16)((char *)cmd -
868 (char *)iob->data);
869 keep_reply = reply->callback(card,
870 reply,
871 (unsigned long)cmd);
872 } else
873 keep_reply = reply->callback(card,
874 reply,
875 (unsigned long)iob);
876 }
877 if (cmd)
878 reply->rc = (u16) cmd->hdr.return_code;
879 else if (iob->rc)
880 reply->rc = iob->rc;
881 if (keep_reply) {
882 spin_lock_irqsave(&card->lock, flags);
883 list_add_tail(&reply->list,
884 &card->cmd_waiter_list);
885 spin_unlock_irqrestore(&card->lock, flags);
886 } else {
887 atomic_inc(&reply->received);
888 wake_up(&reply->wait_q);
889 }
890 qeth_put_reply(reply);
891 goto out;
892 }
893 }
894 spin_unlock_irqrestore(&card->lock, flags);
895 out:
896 memcpy(&card->seqno.pdu_hdr_ack,
897 QETH_PDU_HEADER_SEQ_NO(iob->data),
898 QETH_SEQ_NO_LENGTH);
899 qeth_release_buffer(channel, iob);
900 }
901
902 static int qeth_setup_channel(struct qeth_channel *channel, bool alloc_buffers)
903 {
904 int cnt;
905
906 QETH_DBF_TEXT(SETUP, 2, "setupch");
907
908 channel->ccw = kmalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
909 if (!channel->ccw)
910 return -ENOMEM;
911 channel->state = CH_STATE_DOWN;
912 atomic_set(&channel->irq_pending, 0);
913 init_waitqueue_head(&channel->wait_q);
914
915 if (!alloc_buffers)
916 return 0;
917
918 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
919 channel->iob[cnt].data =
920 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
921 if (channel->iob[cnt].data == NULL)
922 break;
923 channel->iob[cnt].state = BUF_STATE_FREE;
924 channel->iob[cnt].channel = channel;
925 channel->iob[cnt].callback = qeth_send_control_data_cb;
926 channel->iob[cnt].rc = 0;
927 }
928 if (cnt < QETH_CMD_BUFFER_NO) {
929 kfree(channel->ccw);
930 while (cnt-- > 0)
931 kfree(channel->iob[cnt].data);
932 return -ENOMEM;
933 }
934 channel->io_buf_no = 0;
935 spin_lock_init(&channel->iob_lock);
936
937 return 0;
938 }
939
940 static int qeth_set_thread_start_bit(struct qeth_card *card,
941 unsigned long thread)
942 {
943 unsigned long flags;
944
945 spin_lock_irqsave(&card->thread_mask_lock, flags);
946 if (!(card->thread_allowed_mask & thread) ||
947 (card->thread_start_mask & thread)) {
948 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
949 return -EPERM;
950 }
951 card->thread_start_mask |= thread;
952 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
953 return 0;
954 }
955
956 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
957 {
958 unsigned long flags;
959
960 spin_lock_irqsave(&card->thread_mask_lock, flags);
961 card->thread_start_mask &= ~thread;
962 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
963 wake_up(&card->wait_q);
964 }
965 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
966
967 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
968 {
969 unsigned long flags;
970
971 spin_lock_irqsave(&card->thread_mask_lock, flags);
972 card->thread_running_mask &= ~thread;
973 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
974 wake_up_all(&card->wait_q);
975 }
976 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
977
978 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
979 {
980 unsigned long flags;
981 int rc = 0;
982
983 spin_lock_irqsave(&card->thread_mask_lock, flags);
984 if (card->thread_start_mask & thread) {
985 if ((card->thread_allowed_mask & thread) &&
986 !(card->thread_running_mask & thread)) {
987 rc = 1;
988 card->thread_start_mask &= ~thread;
989 card->thread_running_mask |= thread;
990 } else
991 rc = -EPERM;
992 }
993 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
994 return rc;
995 }
996
997 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
998 {
999 int rc = 0;
1000
1001 wait_event(card->wait_q,
1002 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1003 return rc;
1004 }
1005 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
1006
1007 void qeth_schedule_recovery(struct qeth_card *card)
1008 {
1009 QETH_CARD_TEXT(card, 2, "startrec");
1010 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
1011 schedule_work(&card->kernel_thread_starter);
1012 }
1013 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
1014
1015 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
1016 {
1017 int dstat, cstat;
1018 char *sense;
1019 struct qeth_card *card;
1020
1021 sense = (char *) irb->ecw;
1022 cstat = irb->scsw.cmd.cstat;
1023 dstat = irb->scsw.cmd.dstat;
1024 card = CARD_FROM_CDEV(cdev);
1025
1026 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1027 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1028 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1029 QETH_CARD_TEXT(card, 2, "CGENCHK");
1030 dev_warn(&cdev->dev, "The qeth device driver "
1031 "failed to recover an error on the device\n");
1032 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1033 dev_name(&cdev->dev), dstat, cstat);
1034 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1035 16, 1, irb, 64, 1);
1036 return 1;
1037 }
1038
1039 if (dstat & DEV_STAT_UNIT_CHECK) {
1040 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1041 SENSE_RESETTING_EVENT_FLAG) {
1042 QETH_CARD_TEXT(card, 2, "REVIND");
1043 return 1;
1044 }
1045 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1046 SENSE_COMMAND_REJECT_FLAG) {
1047 QETH_CARD_TEXT(card, 2, "CMDREJi");
1048 return 1;
1049 }
1050 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1051 QETH_CARD_TEXT(card, 2, "AFFE");
1052 return 1;
1053 }
1054 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1055 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1056 return 0;
1057 }
1058 QETH_CARD_TEXT(card, 2, "DGENCHK");
1059 return 1;
1060 }
1061 return 0;
1062 }
1063
1064 static long __qeth_check_irb_error(struct ccw_device *cdev,
1065 unsigned long intparm, struct irb *irb)
1066 {
1067 struct qeth_card *card;
1068
1069 card = CARD_FROM_CDEV(cdev);
1070
1071 if (!card || !IS_ERR(irb))
1072 return 0;
1073
1074 switch (PTR_ERR(irb)) {
1075 case -EIO:
1076 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1077 dev_name(&cdev->dev));
1078 QETH_CARD_TEXT(card, 2, "ckirberr");
1079 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1080 break;
1081 case -ETIMEDOUT:
1082 dev_warn(&cdev->dev, "A hardware operation timed out"
1083 " on the device\n");
1084 QETH_CARD_TEXT(card, 2, "ckirberr");
1085 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1086 if (intparm == QETH_RCD_PARM) {
1087 if (card->data.ccwdev == cdev) {
1088 card->data.state = CH_STATE_DOWN;
1089 wake_up(&card->wait_q);
1090 }
1091 }
1092 break;
1093 default:
1094 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1095 dev_name(&cdev->dev), PTR_ERR(irb));
1096 QETH_CARD_TEXT(card, 2, "ckirberr");
1097 QETH_CARD_TEXT(card, 2, " rc???");
1098 }
1099 return PTR_ERR(irb);
1100 }
1101
1102 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1103 struct irb *irb)
1104 {
1105 int rc;
1106 int cstat, dstat;
1107 struct qeth_cmd_buffer *iob = NULL;
1108 struct qeth_channel *channel;
1109 struct qeth_card *card;
1110
1111 card = CARD_FROM_CDEV(cdev);
1112 if (!card)
1113 return;
1114
1115 QETH_CARD_TEXT(card, 5, "irq");
1116
1117 if (card->read.ccwdev == cdev) {
1118 channel = &card->read;
1119 QETH_CARD_TEXT(card, 5, "read");
1120 } else if (card->write.ccwdev == cdev) {
1121 channel = &card->write;
1122 QETH_CARD_TEXT(card, 5, "write");
1123 } else {
1124 channel = &card->data;
1125 QETH_CARD_TEXT(card, 5, "data");
1126 }
1127
1128 if (qeth_intparm_is_iob(intparm))
1129 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1130
1131 if (__qeth_check_irb_error(cdev, intparm, irb)) {
1132 /* IO was terminated, free its resources. */
1133 if (iob)
1134 qeth_release_buffer(iob->channel, iob);
1135 atomic_set(&channel->irq_pending, 0);
1136 wake_up(&card->wait_q);
1137 return;
1138 }
1139
1140 atomic_set(&channel->irq_pending, 0);
1141
1142 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1143 channel->state = CH_STATE_STOPPED;
1144
1145 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1146 channel->state = CH_STATE_HALTED;
1147
1148 /*let's wake up immediately on data channel*/
1149 if ((channel == &card->data) && (intparm != 0) &&
1150 (intparm != QETH_RCD_PARM))
1151 goto out;
1152
1153 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1154 QETH_CARD_TEXT(card, 6, "clrchpar");
1155 /* we don't have to handle this further */
1156 intparm = 0;
1157 }
1158 if (intparm == QETH_HALT_CHANNEL_PARM) {
1159 QETH_CARD_TEXT(card, 6, "hltchpar");
1160 /* we don't have to handle this further */
1161 intparm = 0;
1162 }
1163
1164 cstat = irb->scsw.cmd.cstat;
1165 dstat = irb->scsw.cmd.dstat;
1166
1167 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1168 (dstat & DEV_STAT_UNIT_CHECK) ||
1169 (cstat)) {
1170 if (irb->esw.esw0.erw.cons) {
1171 dev_warn(&channel->ccwdev->dev,
1172 "The qeth device driver failed to recover "
1173 "an error on the device\n");
1174 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1175 "0x%X dstat 0x%X\n",
1176 dev_name(&channel->ccwdev->dev), cstat, dstat);
1177 print_hex_dump(KERN_WARNING, "qeth: irb ",
1178 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1179 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1180 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1181 }
1182 if (intparm == QETH_RCD_PARM) {
1183 channel->state = CH_STATE_DOWN;
1184 goto out;
1185 }
1186 rc = qeth_get_problem(cdev, irb);
1187 if (rc) {
1188 card->read_or_write_problem = 1;
1189 qeth_clear_ipacmd_list(card);
1190 qeth_schedule_recovery(card);
1191 goto out;
1192 }
1193 }
1194
1195 if (intparm == QETH_RCD_PARM) {
1196 channel->state = CH_STATE_RCD_DONE;
1197 goto out;
1198 }
1199 if (channel == &card->data)
1200 return;
1201 if (channel == &card->read &&
1202 channel->state == CH_STATE_UP)
1203 __qeth_issue_next_read(card);
1204
1205 if (iob && iob->callback)
1206 iob->callback(iob->channel, iob);
1207
1208 out:
1209 wake_up(&card->wait_q);
1210 return;
1211 }
1212
1213 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1214 struct qeth_qdio_out_buffer *buf,
1215 enum iucv_tx_notify notification)
1216 {
1217 struct sk_buff *skb;
1218
1219 if (skb_queue_empty(&buf->skb_list))
1220 goto out;
1221 skb = skb_peek(&buf->skb_list);
1222 while (skb) {
1223 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1224 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1225 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1226 if (skb->sk) {
1227 struct iucv_sock *iucv = iucv_sk(skb->sk);
1228 iucv->sk_txnotify(skb, notification);
1229 }
1230 }
1231 if (skb_queue_is_last(&buf->skb_list, skb))
1232 skb = NULL;
1233 else
1234 skb = skb_queue_next(&buf->skb_list, skb);
1235 }
1236 out:
1237 return;
1238 }
1239
1240 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1241 {
1242 struct sk_buff *skb;
1243 struct iucv_sock *iucv;
1244 int notify_general_error = 0;
1245
1246 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1247 notify_general_error = 1;
1248
1249 /* release may never happen from within CQ tasklet scope */
1250 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1251
1252 skb = skb_dequeue(&buf->skb_list);
1253 while (skb) {
1254 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1255 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1256 if (notify_general_error &&
1257 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1258 if (skb->sk) {
1259 iucv = iucv_sk(skb->sk);
1260 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1261 }
1262 }
1263 refcount_dec(&skb->users);
1264 dev_kfree_skb_any(skb);
1265 skb = skb_dequeue(&buf->skb_list);
1266 }
1267 }
1268
1269 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1270 struct qeth_qdio_out_buffer *buf)
1271 {
1272 int i;
1273
1274 /* is PCI flag set on buffer? */
1275 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1276 atomic_dec(&queue->set_pci_flags_count);
1277
1278 qeth_release_skbs(buf);
1279
1280 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1281 if (buf->buffer->element[i].addr && buf->is_header[i])
1282 kmem_cache_free(qeth_core_header_cache,
1283 buf->buffer->element[i].addr);
1284 buf->is_header[i] = 0;
1285 }
1286
1287 qeth_scrub_qdio_buffer(buf->buffer,
1288 QETH_MAX_BUFFER_ELEMENTS(queue->card));
1289 buf->next_element_to_fill = 0;
1290 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1291 }
1292
1293 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1294 {
1295 int j;
1296
1297 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1298 if (!q->bufs[j])
1299 continue;
1300 qeth_cleanup_handled_pending(q, j, 1);
1301 qeth_clear_output_buffer(q, q->bufs[j]);
1302 if (free) {
1303 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1304 q->bufs[j] = NULL;
1305 }
1306 }
1307 }
1308
1309 void qeth_clear_qdio_buffers(struct qeth_card *card)
1310 {
1311 int i;
1312
1313 QETH_CARD_TEXT(card, 2, "clearqdbf");
1314 /* clear outbound buffers to free skbs */
1315 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1316 if (card->qdio.out_qs[i]) {
1317 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1318 }
1319 }
1320 }
1321 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1322
1323 static void qeth_free_buffer_pool(struct qeth_card *card)
1324 {
1325 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1326 int i = 0;
1327 list_for_each_entry_safe(pool_entry, tmp,
1328 &card->qdio.init_pool.entry_list, init_list){
1329 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1330 free_page((unsigned long)pool_entry->elements[i]);
1331 list_del(&pool_entry->init_list);
1332 kfree(pool_entry);
1333 }
1334 }
1335
1336 static void qeth_clean_channel(struct qeth_channel *channel)
1337 {
1338 int cnt;
1339
1340 QETH_DBF_TEXT(SETUP, 2, "freech");
1341 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1342 kfree(channel->iob[cnt].data);
1343 kfree(channel->ccw);
1344 }
1345
1346 static void qeth_set_single_write_queues(struct qeth_card *card)
1347 {
1348 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1349 (card->qdio.no_out_queues == 4))
1350 qeth_free_qdio_buffers(card);
1351
1352 card->qdio.no_out_queues = 1;
1353 if (card->qdio.default_out_queue != 0)
1354 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1355
1356 card->qdio.default_out_queue = 0;
1357 }
1358
1359 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1360 {
1361 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1362 (card->qdio.no_out_queues == 1)) {
1363 qeth_free_qdio_buffers(card);
1364 card->qdio.default_out_queue = 2;
1365 }
1366 card->qdio.no_out_queues = 4;
1367 }
1368
1369 static void qeth_update_from_chp_desc(struct qeth_card *card)
1370 {
1371 struct ccw_device *ccwdev;
1372 struct channel_path_desc_fmt0 *chp_dsc;
1373
1374 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1375
1376 ccwdev = card->data.ccwdev;
1377 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1378 if (!chp_dsc)
1379 goto out;
1380
1381 card->info.func_level = 0x4100 + chp_dsc->desc;
1382 if (card->info.type == QETH_CARD_TYPE_IQD)
1383 goto out;
1384
1385 /* CHPP field bit 6 == 1 -> single queue */
1386 if ((chp_dsc->chpp & 0x02) == 0x02)
1387 qeth_set_single_write_queues(card);
1388 else
1389 qeth_set_multiple_write_queues(card);
1390 out:
1391 kfree(chp_dsc);
1392 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1393 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1394 }
1395
1396 static void qeth_init_qdio_info(struct qeth_card *card)
1397 {
1398 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1399 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1400 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1401 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1402 card->qdio.no_out_queues = QETH_MAX_QUEUES;
1403
1404 /* inbound */
1405 card->qdio.no_in_queues = 1;
1406 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1407 if (card->info.type == QETH_CARD_TYPE_IQD)
1408 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1409 else
1410 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1411 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1412 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1413 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1414 }
1415
1416 static void qeth_set_initial_options(struct qeth_card *card)
1417 {
1418 card->options.route4.type = NO_ROUTER;
1419 card->options.route6.type = NO_ROUTER;
1420 card->options.rx_sg_cb = QETH_RX_SG_CB;
1421 card->options.isolation = ISOLATION_MODE_NONE;
1422 card->options.cq = QETH_CQ_DISABLED;
1423 }
1424
1425 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1426 {
1427 unsigned long flags;
1428 int rc = 0;
1429
1430 spin_lock_irqsave(&card->thread_mask_lock, flags);
1431 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1432 (u8) card->thread_start_mask,
1433 (u8) card->thread_allowed_mask,
1434 (u8) card->thread_running_mask);
1435 rc = (card->thread_start_mask & thread);
1436 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1437 return rc;
1438 }
1439
1440 static void qeth_start_kernel_thread(struct work_struct *work)
1441 {
1442 struct task_struct *ts;
1443 struct qeth_card *card = container_of(work, struct qeth_card,
1444 kernel_thread_starter);
1445 QETH_CARD_TEXT(card , 2, "strthrd");
1446
1447 if (card->read.state != CH_STATE_UP &&
1448 card->write.state != CH_STATE_UP)
1449 return;
1450 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1451 ts = kthread_run(card->discipline->recover, (void *)card,
1452 "qeth_recover");
1453 if (IS_ERR(ts)) {
1454 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1455 qeth_clear_thread_running_bit(card,
1456 QETH_RECOVER_THREAD);
1457 }
1458 }
1459 }
1460
1461 static void qeth_buffer_reclaim_work(struct work_struct *);
1462 static void qeth_setup_card(struct qeth_card *card)
1463 {
1464 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1465 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1466
1467 card->info.type = CARD_RDEV(card)->id.driver_info;
1468 card->state = CARD_STATE_DOWN;
1469 spin_lock_init(&card->mclock);
1470 spin_lock_init(&card->lock);
1471 spin_lock_init(&card->ip_lock);
1472 spin_lock_init(&card->thread_mask_lock);
1473 mutex_init(&card->conf_mutex);
1474 mutex_init(&card->discipline_mutex);
1475 mutex_init(&card->vid_list_mutex);
1476 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1477 INIT_LIST_HEAD(&card->cmd_waiter_list);
1478 init_waitqueue_head(&card->wait_q);
1479 qeth_set_initial_options(card);
1480 /* IP address takeover */
1481 INIT_LIST_HEAD(&card->ipato.entries);
1482 qeth_init_qdio_info(card);
1483 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1484 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1485 }
1486
1487 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1488 {
1489 struct qeth_card *card = container_of(slr, struct qeth_card,
1490 qeth_service_level);
1491 if (card->info.mcl_level[0])
1492 seq_printf(m, "qeth: %s firmware level %s\n",
1493 CARD_BUS_ID(card), card->info.mcl_level);
1494 }
1495
1496 static struct qeth_card *qeth_alloc_card(void)
1497 {
1498 struct qeth_card *card;
1499
1500 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1501 card = kzalloc(sizeof(*card), GFP_KERNEL);
1502 if (!card)
1503 goto out;
1504 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1505 if (qeth_setup_channel(&card->read, true))
1506 goto out_ip;
1507 if (qeth_setup_channel(&card->write, true))
1508 goto out_channel;
1509 if (qeth_setup_channel(&card->data, false))
1510 goto out_data;
1511 card->options.layer2 = -1;
1512 card->qeth_service_level.seq_print = qeth_core_sl_print;
1513 register_service_level(&card->qeth_service_level);
1514 return card;
1515
1516 out_data:
1517 qeth_clean_channel(&card->write);
1518 out_channel:
1519 qeth_clean_channel(&card->read);
1520 out_ip:
1521 kfree(card);
1522 out:
1523 return NULL;
1524 }
1525
1526 static int qeth_clear_channel(struct qeth_channel *channel)
1527 {
1528 unsigned long flags;
1529 struct qeth_card *card;
1530 int rc;
1531
1532 card = CARD_FROM_CDEV(channel->ccwdev);
1533 QETH_CARD_TEXT(card, 3, "clearch");
1534 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1535 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1536 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1537
1538 if (rc)
1539 return rc;
1540 rc = wait_event_interruptible_timeout(card->wait_q,
1541 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1542 if (rc == -ERESTARTSYS)
1543 return rc;
1544 if (channel->state != CH_STATE_STOPPED)
1545 return -ETIME;
1546 channel->state = CH_STATE_DOWN;
1547 return 0;
1548 }
1549
1550 static int qeth_halt_channel(struct qeth_channel *channel)
1551 {
1552 unsigned long flags;
1553 struct qeth_card *card;
1554 int rc;
1555
1556 card = CARD_FROM_CDEV(channel->ccwdev);
1557 QETH_CARD_TEXT(card, 3, "haltch");
1558 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1559 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1560 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1561
1562 if (rc)
1563 return rc;
1564 rc = wait_event_interruptible_timeout(card->wait_q,
1565 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1566 if (rc == -ERESTARTSYS)
1567 return rc;
1568 if (channel->state != CH_STATE_HALTED)
1569 return -ETIME;
1570 return 0;
1571 }
1572
1573 static int qeth_halt_channels(struct qeth_card *card)
1574 {
1575 int rc1 = 0, rc2 = 0, rc3 = 0;
1576
1577 QETH_CARD_TEXT(card, 3, "haltchs");
1578 rc1 = qeth_halt_channel(&card->read);
1579 rc2 = qeth_halt_channel(&card->write);
1580 rc3 = qeth_halt_channel(&card->data);
1581 if (rc1)
1582 return rc1;
1583 if (rc2)
1584 return rc2;
1585 return rc3;
1586 }
1587
1588 static int qeth_clear_channels(struct qeth_card *card)
1589 {
1590 int rc1 = 0, rc2 = 0, rc3 = 0;
1591
1592 QETH_CARD_TEXT(card, 3, "clearchs");
1593 rc1 = qeth_clear_channel(&card->read);
1594 rc2 = qeth_clear_channel(&card->write);
1595 rc3 = qeth_clear_channel(&card->data);
1596 if (rc1)
1597 return rc1;
1598 if (rc2)
1599 return rc2;
1600 return rc3;
1601 }
1602
1603 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1604 {
1605 int rc = 0;
1606
1607 QETH_CARD_TEXT(card, 3, "clhacrd");
1608
1609 if (halt)
1610 rc = qeth_halt_channels(card);
1611 if (rc)
1612 return rc;
1613 return qeth_clear_channels(card);
1614 }
1615
1616 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1617 {
1618 int rc = 0;
1619
1620 QETH_CARD_TEXT(card, 3, "qdioclr");
1621 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1622 QETH_QDIO_CLEANING)) {
1623 case QETH_QDIO_ESTABLISHED:
1624 if (card->info.type == QETH_CARD_TYPE_IQD)
1625 rc = qdio_shutdown(CARD_DDEV(card),
1626 QDIO_FLAG_CLEANUP_USING_HALT);
1627 else
1628 rc = qdio_shutdown(CARD_DDEV(card),
1629 QDIO_FLAG_CLEANUP_USING_CLEAR);
1630 if (rc)
1631 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1632 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1633 break;
1634 case QETH_QDIO_CLEANING:
1635 return rc;
1636 default:
1637 break;
1638 }
1639 rc = qeth_clear_halt_card(card, use_halt);
1640 if (rc)
1641 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1642 card->state = CARD_STATE_DOWN;
1643 return rc;
1644 }
1645 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1646
1647 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1648 int *length)
1649 {
1650 struct ciw *ciw;
1651 char *rcd_buf;
1652 int ret;
1653 struct qeth_channel *channel = &card->data;
1654 unsigned long flags;
1655
1656 /*
1657 * scan for RCD command in extended SenseID data
1658 */
1659 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1660 if (!ciw || ciw->cmd == 0)
1661 return -EOPNOTSUPP;
1662 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1663 if (!rcd_buf)
1664 return -ENOMEM;
1665
1666 qeth_setup_ccw(channel->ccw, ciw->cmd, ciw->count, rcd_buf);
1667 channel->state = CH_STATE_RCD;
1668 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1669 ret = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1670 QETH_RCD_PARM, LPM_ANYPATH, 0,
1671 QETH_RCD_TIMEOUT);
1672 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1673 if (!ret)
1674 wait_event(card->wait_q,
1675 (channel->state == CH_STATE_RCD_DONE ||
1676 channel->state == CH_STATE_DOWN));
1677 if (channel->state == CH_STATE_DOWN)
1678 ret = -EIO;
1679 else
1680 channel->state = CH_STATE_DOWN;
1681 if (ret) {
1682 kfree(rcd_buf);
1683 *buffer = NULL;
1684 *length = 0;
1685 } else {
1686 *length = ciw->count;
1687 *buffer = rcd_buf;
1688 }
1689 return ret;
1690 }
1691
1692 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1693 {
1694 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1695 card->info.chpid = prcd[30];
1696 card->info.unit_addr2 = prcd[31];
1697 card->info.cula = prcd[63];
1698 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1699 (prcd[0x11] == _ascebc['M']));
1700 }
1701
1702 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1703 {
1704 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1705 struct diag26c_vnic_resp *response = NULL;
1706 struct diag26c_vnic_req *request = NULL;
1707 struct ccw_dev_id id;
1708 char userid[80];
1709 int rc = 0;
1710
1711 QETH_DBF_TEXT(SETUP, 2, "vmlayer");
1712
1713 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1714 if (rc)
1715 goto out;
1716
1717 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1718 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1719 if (!request || !response) {
1720 rc = -ENOMEM;
1721 goto out;
1722 }
1723
1724 ccw_device_get_id(CARD_RDEV(card), &id);
1725 request->resp_buf_len = sizeof(*response);
1726 request->resp_version = DIAG26C_VERSION6_VM65918;
1727 request->req_format = DIAG26C_VNIC_INFO;
1728 ASCEBC(userid, 8);
1729 memcpy(&request->sys_name, userid, 8);
1730 request->devno = id.devno;
1731
1732 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1733 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1734 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1735 if (rc)
1736 goto out;
1737 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1738
1739 if (request->resp_buf_len < sizeof(*response) ||
1740 response->version != request->resp_version) {
1741 rc = -EIO;
1742 goto out;
1743 }
1744
1745 if (response->protocol == VNIC_INFO_PROT_L2)
1746 disc = QETH_DISCIPLINE_LAYER2;
1747 else if (response->protocol == VNIC_INFO_PROT_L3)
1748 disc = QETH_DISCIPLINE_LAYER3;
1749
1750 out:
1751 kfree(response);
1752 kfree(request);
1753 if (rc)
1754 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc);
1755 return disc;
1756 }
1757
1758 /* Determine whether the device requires a specific layer discipline */
1759 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1760 {
1761 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1762
1763 if (card->info.type == QETH_CARD_TYPE_OSM ||
1764 card->info.type == QETH_CARD_TYPE_OSN)
1765 disc = QETH_DISCIPLINE_LAYER2;
1766 else if (card->info.guestlan)
1767 disc = (card->info.type == QETH_CARD_TYPE_IQD) ?
1768 QETH_DISCIPLINE_LAYER3 :
1769 qeth_vm_detect_layer(card);
1770
1771 switch (disc) {
1772 case QETH_DISCIPLINE_LAYER2:
1773 QETH_DBF_TEXT(SETUP, 3, "force l2");
1774 break;
1775 case QETH_DISCIPLINE_LAYER3:
1776 QETH_DBF_TEXT(SETUP, 3, "force l3");
1777 break;
1778 default:
1779 QETH_DBF_TEXT(SETUP, 3, "force no");
1780 }
1781
1782 return disc;
1783 }
1784
1785 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1786 {
1787 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1788
1789 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1790 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1791 card->info.blkt.time_total = 0;
1792 card->info.blkt.inter_packet = 0;
1793 card->info.blkt.inter_packet_jumbo = 0;
1794 } else {
1795 card->info.blkt.time_total = 250;
1796 card->info.blkt.inter_packet = 5;
1797 card->info.blkt.inter_packet_jumbo = 15;
1798 }
1799 }
1800
1801 static void qeth_init_tokens(struct qeth_card *card)
1802 {
1803 card->token.issuer_rm_w = 0x00010103UL;
1804 card->token.cm_filter_w = 0x00010108UL;
1805 card->token.cm_connection_w = 0x0001010aUL;
1806 card->token.ulp_filter_w = 0x0001010bUL;
1807 card->token.ulp_connection_w = 0x0001010dUL;
1808 }
1809
1810 static void qeth_init_func_level(struct qeth_card *card)
1811 {
1812 switch (card->info.type) {
1813 case QETH_CARD_TYPE_IQD:
1814 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1815 break;
1816 case QETH_CARD_TYPE_OSD:
1817 case QETH_CARD_TYPE_OSN:
1818 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1819 break;
1820 default:
1821 break;
1822 }
1823 }
1824
1825 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1826 void (*idx_reply_cb)(struct qeth_channel *,
1827 struct qeth_cmd_buffer *))
1828 {
1829 struct qeth_cmd_buffer *iob;
1830 unsigned long flags;
1831 int rc;
1832 struct qeth_card *card;
1833
1834 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1835 card = CARD_FROM_CDEV(channel->ccwdev);
1836 iob = qeth_get_buffer(channel);
1837 if (!iob)
1838 return -ENOMEM;
1839 iob->callback = idx_reply_cb;
1840 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data);
1841
1842 wait_event(card->wait_q,
1843 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1844 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1845 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1846 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1847 (addr_t) iob, 0, 0, QETH_TIMEOUT);
1848 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1849
1850 if (rc) {
1851 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1852 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1853 atomic_set(&channel->irq_pending, 0);
1854 wake_up(&card->wait_q);
1855 return rc;
1856 }
1857 rc = wait_event_interruptible_timeout(card->wait_q,
1858 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1859 if (rc == -ERESTARTSYS)
1860 return rc;
1861 if (channel->state != CH_STATE_UP) {
1862 rc = -ETIME;
1863 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1864 } else
1865 rc = 0;
1866 return rc;
1867 }
1868
1869 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1870 void (*idx_reply_cb)(struct qeth_channel *,
1871 struct qeth_cmd_buffer *))
1872 {
1873 struct qeth_card *card;
1874 struct qeth_cmd_buffer *iob;
1875 unsigned long flags;
1876 __u16 temp;
1877 __u8 tmp;
1878 int rc;
1879 struct ccw_dev_id temp_devid;
1880
1881 card = CARD_FROM_CDEV(channel->ccwdev);
1882
1883 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1884
1885 iob = qeth_get_buffer(channel);
1886 if (!iob)
1887 return -ENOMEM;
1888 iob->callback = idx_reply_cb;
1889 qeth_setup_ccw(channel->ccw, CCW_CMD_WRITE, IDX_ACTIVATE_SIZE,
1890 iob->data);
1891 if (channel == &card->write) {
1892 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1893 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1894 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1895 card->seqno.trans_hdr++;
1896 } else {
1897 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1898 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1899 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1900 }
1901 tmp = ((u8)card->dev->dev_port) | 0x80;
1902 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1903 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1904 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1905 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1906 &card->info.func_level, sizeof(__u16));
1907 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1908 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1909 temp = (card->info.cula << 8) + card->info.unit_addr2;
1910 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1911
1912 wait_event(card->wait_q,
1913 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1914 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1915 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1916 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1917 (addr_t) iob, 0, 0, QETH_TIMEOUT);
1918 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1919
1920 if (rc) {
1921 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1922 rc);
1923 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1924 atomic_set(&channel->irq_pending, 0);
1925 wake_up(&card->wait_q);
1926 return rc;
1927 }
1928 rc = wait_event_interruptible_timeout(card->wait_q,
1929 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1930 if (rc == -ERESTARTSYS)
1931 return rc;
1932 if (channel->state != CH_STATE_ACTIVATING) {
1933 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1934 " failed to recover an error on the device\n");
1935 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1936 dev_name(&channel->ccwdev->dev));
1937 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1938 return -ETIME;
1939 }
1940 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1941 }
1942
1943 static int qeth_peer_func_level(int level)
1944 {
1945 if ((level & 0xff) == 8)
1946 return (level & 0xff) + 0x400;
1947 if (((level >> 8) & 3) == 1)
1948 return (level & 0xff) + 0x200;
1949 return level;
1950 }
1951
1952 static void qeth_idx_write_cb(struct qeth_channel *channel,
1953 struct qeth_cmd_buffer *iob)
1954 {
1955 struct qeth_card *card;
1956 __u16 temp;
1957
1958 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1959
1960 if (channel->state == CH_STATE_DOWN) {
1961 channel->state = CH_STATE_ACTIVATING;
1962 goto out;
1963 }
1964 card = CARD_FROM_CDEV(channel->ccwdev);
1965
1966 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1967 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1968 dev_err(&channel->ccwdev->dev,
1969 "The adapter is used exclusively by another "
1970 "host\n");
1971 else
1972 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1973 " negative reply\n",
1974 dev_name(&channel->ccwdev->dev));
1975 goto out;
1976 }
1977 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1978 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1979 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1980 "function level mismatch (sent: 0x%x, received: "
1981 "0x%x)\n", dev_name(&channel->ccwdev->dev),
1982 card->info.func_level, temp);
1983 goto out;
1984 }
1985 channel->state = CH_STATE_UP;
1986 out:
1987 qeth_release_buffer(channel, iob);
1988 }
1989
1990 static void qeth_idx_read_cb(struct qeth_channel *channel,
1991 struct qeth_cmd_buffer *iob)
1992 {
1993 struct qeth_card *card;
1994 __u16 temp;
1995
1996 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1997 if (channel->state == CH_STATE_DOWN) {
1998 channel->state = CH_STATE_ACTIVATING;
1999 goto out;
2000 }
2001
2002 card = CARD_FROM_CDEV(channel->ccwdev);
2003 if (qeth_check_idx_response(card, iob->data))
2004 goto out;
2005
2006 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
2007 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2008 case QETH_IDX_ACT_ERR_EXCL:
2009 dev_err(&channel->ccwdev->dev,
2010 "The adapter is used exclusively by another "
2011 "host\n");
2012 break;
2013 case QETH_IDX_ACT_ERR_AUTH:
2014 case QETH_IDX_ACT_ERR_AUTH_USER:
2015 dev_err(&channel->ccwdev->dev,
2016 "Setting the device online failed because of "
2017 "insufficient authorization\n");
2018 break;
2019 default:
2020 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
2021 " negative reply\n",
2022 dev_name(&channel->ccwdev->dev));
2023 }
2024 QETH_CARD_TEXT_(card, 2, "idxread%c",
2025 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2026 goto out;
2027 }
2028
2029 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2030 if (temp != qeth_peer_func_level(card->info.func_level)) {
2031 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
2032 "level mismatch (sent: 0x%x, received: 0x%x)\n",
2033 dev_name(&channel->ccwdev->dev),
2034 card->info.func_level, temp);
2035 goto out;
2036 }
2037 memcpy(&card->token.issuer_rm_r,
2038 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2039 QETH_MPC_TOKEN_LENGTH);
2040 memcpy(&card->info.mcl_level[0],
2041 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2042 channel->state = CH_STATE_UP;
2043 out:
2044 qeth_release_buffer(channel, iob);
2045 }
2046
2047 void qeth_prepare_control_data(struct qeth_card *card, int len,
2048 struct qeth_cmd_buffer *iob)
2049 {
2050 qeth_setup_ccw(iob->channel->ccw, CCW_CMD_WRITE, len, iob->data);
2051 iob->callback = qeth_release_buffer;
2052
2053 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2054 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2055 card->seqno.trans_hdr++;
2056 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2057 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2058 card->seqno.pdu_hdr++;
2059 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2060 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2061 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2062 }
2063 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2064
2065 /**
2066 * qeth_send_control_data() - send control command to the card
2067 * @card: qeth_card structure pointer
2068 * @len: size of the command buffer
2069 * @iob: qeth_cmd_buffer pointer
2070 * @reply_cb: callback function pointer
2071 * @cb_card: pointer to the qeth_card structure
2072 * @cb_reply: pointer to the qeth_reply structure
2073 * @cb_cmd: pointer to the original iob for non-IPA
2074 * commands, or to the qeth_ipa_cmd structure
2075 * for the IPA commands.
2076 * @reply_param: private pointer passed to the callback
2077 *
2078 * Returns the value of the `return_code' field of the response
2079 * block returned from the hardware, or other error indication.
2080 * Value of zero indicates successful execution of the command.
2081 *
2082 * Callback function gets called one or more times, with cb_cmd
2083 * pointing to the response returned by the hardware. Callback
2084 * function must return non-zero if more reply blocks are expected,
2085 * and zero if the last or only reply block is received. Callback
2086 * function can get the value of the reply_param pointer from the
2087 * field 'param' of the structure qeth_reply.
2088 */
2089
2090 int qeth_send_control_data(struct qeth_card *card, int len,
2091 struct qeth_cmd_buffer *iob,
2092 int (*reply_cb)(struct qeth_card *cb_card,
2093 struct qeth_reply *cb_reply,
2094 unsigned long cb_cmd),
2095 void *reply_param)
2096 {
2097 struct qeth_channel *channel = iob->channel;
2098 int rc;
2099 unsigned long flags;
2100 struct qeth_reply *reply = NULL;
2101 unsigned long timeout, event_timeout;
2102 struct qeth_ipa_cmd *cmd = NULL;
2103
2104 QETH_CARD_TEXT(card, 2, "sendctl");
2105
2106 if (card->read_or_write_problem) {
2107 qeth_release_buffer(channel, iob);
2108 return -EIO;
2109 }
2110 reply = qeth_alloc_reply(card);
2111 if (!reply) {
2112 return -ENOMEM;
2113 }
2114 reply->callback = reply_cb;
2115 reply->param = reply_param;
2116
2117 init_waitqueue_head(&reply->wait_q);
2118
2119 while (atomic_cmpxchg(&channel->irq_pending, 0, 1)) ;
2120
2121 if (IS_IPA(iob->data)) {
2122 cmd = __ipa_cmd(iob);
2123 cmd->hdr.seqno = card->seqno.ipa++;
2124 reply->seqno = cmd->hdr.seqno;
2125 event_timeout = QETH_IPA_TIMEOUT;
2126 } else {
2127 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2128 event_timeout = QETH_TIMEOUT;
2129 }
2130 qeth_prepare_control_data(card, len, iob);
2131
2132 spin_lock_irqsave(&card->lock, flags);
2133 list_add_tail(&reply->list, &card->cmd_waiter_list);
2134 spin_unlock_irqrestore(&card->lock, flags);
2135
2136 timeout = jiffies + event_timeout;
2137
2138 QETH_CARD_TEXT(card, 6, "noirqpnd");
2139 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
2140 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
2141 (addr_t) iob, 0, 0, event_timeout);
2142 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
2143 if (rc) {
2144 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2145 "ccw_device_start rc = %i\n",
2146 dev_name(&channel->ccwdev->dev), rc);
2147 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2148 spin_lock_irqsave(&card->lock, flags);
2149 list_del_init(&reply->list);
2150 qeth_put_reply(reply);
2151 spin_unlock_irqrestore(&card->lock, flags);
2152 qeth_release_buffer(channel, iob);
2153 atomic_set(&channel->irq_pending, 0);
2154 wake_up(&card->wait_q);
2155 return rc;
2156 }
2157
2158 /* we have only one long running ipassist, since we can ensure
2159 process context of this command we can sleep */
2160 if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
2161 cmd->hdr.prot_version == QETH_PROT_IPV4) {
2162 if (!wait_event_timeout(reply->wait_q,
2163 atomic_read(&reply->received), event_timeout))
2164 goto time_err;
2165 } else {
2166 while (!atomic_read(&reply->received)) {
2167 if (time_after(jiffies, timeout))
2168 goto time_err;
2169 cpu_relax();
2170 }
2171 }
2172
2173 rc = reply->rc;
2174 qeth_put_reply(reply);
2175 return rc;
2176
2177 time_err:
2178 reply->rc = -ETIME;
2179 spin_lock_irqsave(&reply->card->lock, flags);
2180 list_del_init(&reply->list);
2181 spin_unlock_irqrestore(&reply->card->lock, flags);
2182 atomic_inc(&reply->received);
2183 rc = reply->rc;
2184 qeth_put_reply(reply);
2185 return rc;
2186 }
2187 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2188
2189 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2190 unsigned long data)
2191 {
2192 struct qeth_cmd_buffer *iob;
2193
2194 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2195
2196 iob = (struct qeth_cmd_buffer *) data;
2197 memcpy(&card->token.cm_filter_r,
2198 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2199 QETH_MPC_TOKEN_LENGTH);
2200 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2201 return 0;
2202 }
2203
2204 static int qeth_cm_enable(struct qeth_card *card)
2205 {
2206 int rc;
2207 struct qeth_cmd_buffer *iob;
2208
2209 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2210
2211 iob = qeth_wait_for_buffer(&card->write);
2212 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2213 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2214 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2215 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2216 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2217
2218 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2219 qeth_cm_enable_cb, NULL);
2220 return rc;
2221 }
2222
2223 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2224 unsigned long data)
2225 {
2226
2227 struct qeth_cmd_buffer *iob;
2228
2229 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2230
2231 iob = (struct qeth_cmd_buffer *) data;
2232 memcpy(&card->token.cm_connection_r,
2233 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2234 QETH_MPC_TOKEN_LENGTH);
2235 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2236 return 0;
2237 }
2238
2239 static int qeth_cm_setup(struct qeth_card *card)
2240 {
2241 int rc;
2242 struct qeth_cmd_buffer *iob;
2243
2244 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2245
2246 iob = qeth_wait_for_buffer(&card->write);
2247 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2248 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2249 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2250 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2251 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2252 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2253 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2254 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2255 qeth_cm_setup_cb, NULL);
2256 return rc;
2257
2258 }
2259
2260 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2261 {
2262 struct net_device *dev = card->dev;
2263 unsigned int new_mtu;
2264
2265 if (!max_mtu) {
2266 /* IQD needs accurate max MTU to set up its RX buffers: */
2267 if (IS_IQD(card))
2268 return -EINVAL;
2269 /* tolerate quirky HW: */
2270 max_mtu = ETH_MAX_MTU;
2271 }
2272
2273 rtnl_lock();
2274 if (IS_IQD(card)) {
2275 /* move any device with default MTU to new max MTU: */
2276 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2277
2278 /* adjust RX buffer size to new max MTU: */
2279 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2280 if (dev->max_mtu && dev->max_mtu != max_mtu)
2281 qeth_free_qdio_buffers(card);
2282 } else {
2283 if (dev->mtu)
2284 new_mtu = dev->mtu;
2285 /* default MTUs for first setup: */
2286 else if (card->options.layer2)
2287 new_mtu = ETH_DATA_LEN;
2288 else
2289 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2290 }
2291
2292 dev->max_mtu = max_mtu;
2293 dev->mtu = min(new_mtu, max_mtu);
2294 rtnl_unlock();
2295 return 0;
2296 }
2297
2298 static int qeth_get_mtu_outof_framesize(int framesize)
2299 {
2300 switch (framesize) {
2301 case 0x4000:
2302 return 8192;
2303 case 0x6000:
2304 return 16384;
2305 case 0xa000:
2306 return 32768;
2307 case 0xffff:
2308 return 57344;
2309 default:
2310 return 0;
2311 }
2312 }
2313
2314 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2315 unsigned long data)
2316 {
2317
2318 __u16 mtu, framesize;
2319 __u16 len;
2320 __u8 link_type;
2321 struct qeth_cmd_buffer *iob;
2322
2323 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2324
2325 iob = (struct qeth_cmd_buffer *) data;
2326 memcpy(&card->token.ulp_filter_r,
2327 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2328 QETH_MPC_TOKEN_LENGTH);
2329 if (card->info.type == QETH_CARD_TYPE_IQD) {
2330 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2331 mtu = qeth_get_mtu_outof_framesize(framesize);
2332 } else {
2333 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2334 }
2335 *(u16 *)reply->param = mtu;
2336
2337 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2338 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2339 memcpy(&link_type,
2340 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2341 card->info.link_type = link_type;
2342 } else
2343 card->info.link_type = 0;
2344 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2345 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2346 return 0;
2347 }
2348
2349 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2350 {
2351 if (IS_OSN(card))
2352 return QETH_PROT_OSN2;
2353 return (card->options.layer2 == 1) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2354 }
2355
2356 static int qeth_ulp_enable(struct qeth_card *card)
2357 {
2358 u8 prot_type = qeth_mpc_select_prot_type(card);
2359 struct qeth_cmd_buffer *iob;
2360 u16 max_mtu;
2361 int rc;
2362
2363 /*FIXME: trace view callbacks*/
2364 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2365
2366 iob = qeth_wait_for_buffer(&card->write);
2367 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2368
2369 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2370 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2371 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2372 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2373 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2374 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2375 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2376 qeth_ulp_enable_cb, &max_mtu);
2377 if (rc)
2378 return rc;
2379 return qeth_update_max_mtu(card, max_mtu);
2380 }
2381
2382 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2383 unsigned long data)
2384 {
2385 struct qeth_cmd_buffer *iob;
2386
2387 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2388
2389 iob = (struct qeth_cmd_buffer *) data;
2390 memcpy(&card->token.ulp_connection_r,
2391 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2392 QETH_MPC_TOKEN_LENGTH);
2393 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2394 3)) {
2395 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2396 dev_err(&card->gdev->dev, "A connection could not be "
2397 "established because of an OLM limit\n");
2398 iob->rc = -EMLINK;
2399 }
2400 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2401 return 0;
2402 }
2403
2404 static int qeth_ulp_setup(struct qeth_card *card)
2405 {
2406 int rc;
2407 __u16 temp;
2408 struct qeth_cmd_buffer *iob;
2409 struct ccw_dev_id dev_id;
2410
2411 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2412
2413 iob = qeth_wait_for_buffer(&card->write);
2414 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2415
2416 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2417 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2418 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2419 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2420 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2421 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2422
2423 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2424 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2425 temp = (card->info.cula << 8) + card->info.unit_addr2;
2426 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2427 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2428 qeth_ulp_setup_cb, NULL);
2429 return rc;
2430 }
2431
2432 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2433 {
2434 struct qeth_qdio_out_buffer *newbuf;
2435
2436 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2437 if (!newbuf)
2438 return -ENOMEM;
2439
2440 newbuf->buffer = q->qdio_bufs[bidx];
2441 skb_queue_head_init(&newbuf->skb_list);
2442 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2443 newbuf->q = q;
2444 newbuf->next_pending = q->bufs[bidx];
2445 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2446 q->bufs[bidx] = newbuf;
2447 return 0;
2448 }
2449
2450 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2451 {
2452 if (!q)
2453 return;
2454
2455 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2456 kfree(q);
2457 }
2458
2459 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2460 {
2461 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2462
2463 if (!q)
2464 return NULL;
2465
2466 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2467 kfree(q);
2468 return NULL;
2469 }
2470 return q;
2471 }
2472
2473 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2474 {
2475 int i, j;
2476
2477 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2478
2479 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2480 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2481 return 0;
2482
2483 QETH_DBF_TEXT(SETUP, 2, "inq");
2484 card->qdio.in_q = qeth_alloc_qdio_queue();
2485 if (!card->qdio.in_q)
2486 goto out_nomem;
2487
2488 /* inbound buffer pool */
2489 if (qeth_alloc_buffer_pool(card))
2490 goto out_freeinq;
2491
2492 /* outbound */
2493 card->qdio.out_qs =
2494 kcalloc(card->qdio.no_out_queues,
2495 sizeof(struct qeth_qdio_out_q *),
2496 GFP_KERNEL);
2497 if (!card->qdio.out_qs)
2498 goto out_freepool;
2499 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2500 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2501 if (!card->qdio.out_qs[i])
2502 goto out_freeoutq;
2503 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2504 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2505 card->qdio.out_qs[i]->queue_no = i;
2506 /* give outbound qeth_qdio_buffers their qdio_buffers */
2507 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2508 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2509 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2510 goto out_freeoutqbufs;
2511 }
2512 }
2513
2514 /* completion */
2515 if (qeth_alloc_cq(card))
2516 goto out_freeoutq;
2517
2518 return 0;
2519
2520 out_freeoutqbufs:
2521 while (j > 0) {
2522 --j;
2523 kmem_cache_free(qeth_qdio_outbuf_cache,
2524 card->qdio.out_qs[i]->bufs[j]);
2525 card->qdio.out_qs[i]->bufs[j] = NULL;
2526 }
2527 out_freeoutq:
2528 while (i > 0) {
2529 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2530 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2531 }
2532 kfree(card->qdio.out_qs);
2533 card->qdio.out_qs = NULL;
2534 out_freepool:
2535 qeth_free_buffer_pool(card);
2536 out_freeinq:
2537 qeth_free_qdio_queue(card->qdio.in_q);
2538 card->qdio.in_q = NULL;
2539 out_nomem:
2540 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2541 return -ENOMEM;
2542 }
2543
2544 static void qeth_free_qdio_buffers(struct qeth_card *card)
2545 {
2546 int i, j;
2547
2548 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2549 QETH_QDIO_UNINITIALIZED)
2550 return;
2551
2552 qeth_free_cq(card);
2553 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2554 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2555 if (card->qdio.in_q->bufs[j].rx_skb)
2556 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2557 }
2558 qeth_free_qdio_queue(card->qdio.in_q);
2559 card->qdio.in_q = NULL;
2560 /* inbound buffer pool */
2561 qeth_free_buffer_pool(card);
2562 /* free outbound qdio_qs */
2563 if (card->qdio.out_qs) {
2564 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2565 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2566 qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2567 }
2568 kfree(card->qdio.out_qs);
2569 card->qdio.out_qs = NULL;
2570 }
2571 }
2572
2573 static void qeth_create_qib_param_field(struct qeth_card *card,
2574 char *param_field)
2575 {
2576
2577 param_field[0] = _ascebc['P'];
2578 param_field[1] = _ascebc['C'];
2579 param_field[2] = _ascebc['I'];
2580 param_field[3] = _ascebc['T'];
2581 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2582 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2583 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2584 }
2585
2586 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2587 char *param_field)
2588 {
2589 param_field[16] = _ascebc['B'];
2590 param_field[17] = _ascebc['L'];
2591 param_field[18] = _ascebc['K'];
2592 param_field[19] = _ascebc['T'];
2593 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2594 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2595 *((unsigned int *) (&param_field[28])) =
2596 card->info.blkt.inter_packet_jumbo;
2597 }
2598
2599 static int qeth_qdio_activate(struct qeth_card *card)
2600 {
2601 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2602 return qdio_activate(CARD_DDEV(card));
2603 }
2604
2605 static int qeth_dm_act(struct qeth_card *card)
2606 {
2607 int rc;
2608 struct qeth_cmd_buffer *iob;
2609
2610 QETH_DBF_TEXT(SETUP, 2, "dmact");
2611
2612 iob = qeth_wait_for_buffer(&card->write);
2613 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2614
2615 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2616 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2617 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2618 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2619 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2620 return rc;
2621 }
2622
2623 static int qeth_mpc_initialize(struct qeth_card *card)
2624 {
2625 int rc;
2626
2627 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2628
2629 rc = qeth_issue_next_read(card);
2630 if (rc) {
2631 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2632 return rc;
2633 }
2634 rc = qeth_cm_enable(card);
2635 if (rc) {
2636 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2637 goto out_qdio;
2638 }
2639 rc = qeth_cm_setup(card);
2640 if (rc) {
2641 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2642 goto out_qdio;
2643 }
2644 rc = qeth_ulp_enable(card);
2645 if (rc) {
2646 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2647 goto out_qdio;
2648 }
2649 rc = qeth_ulp_setup(card);
2650 if (rc) {
2651 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2652 goto out_qdio;
2653 }
2654 rc = qeth_alloc_qdio_buffers(card);
2655 if (rc) {
2656 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2657 goto out_qdio;
2658 }
2659 rc = qeth_qdio_establish(card);
2660 if (rc) {
2661 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2662 qeth_free_qdio_buffers(card);
2663 goto out_qdio;
2664 }
2665 rc = qeth_qdio_activate(card);
2666 if (rc) {
2667 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2668 goto out_qdio;
2669 }
2670 rc = qeth_dm_act(card);
2671 if (rc) {
2672 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2673 goto out_qdio;
2674 }
2675
2676 return 0;
2677 out_qdio:
2678 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2679 qdio_free(CARD_DDEV(card));
2680 return rc;
2681 }
2682
2683 void qeth_print_status_message(struct qeth_card *card)
2684 {
2685 switch (card->info.type) {
2686 case QETH_CARD_TYPE_OSD:
2687 case QETH_CARD_TYPE_OSM:
2688 case QETH_CARD_TYPE_OSX:
2689 /* VM will use a non-zero first character
2690 * to indicate a HiperSockets like reporting
2691 * of the level OSA sets the first character to zero
2692 * */
2693 if (!card->info.mcl_level[0]) {
2694 sprintf(card->info.mcl_level, "%02x%02x",
2695 card->info.mcl_level[2],
2696 card->info.mcl_level[3]);
2697 break;
2698 }
2699 /* fallthrough */
2700 case QETH_CARD_TYPE_IQD:
2701 if ((card->info.guestlan) ||
2702 (card->info.mcl_level[0] & 0x80)) {
2703 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2704 card->info.mcl_level[0]];
2705 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2706 card->info.mcl_level[1]];
2707 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2708 card->info.mcl_level[2]];
2709 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2710 card->info.mcl_level[3]];
2711 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2712 }
2713 break;
2714 default:
2715 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2716 }
2717 dev_info(&card->gdev->dev,
2718 "Device is a%s card%s%s%s\nwith link type %s.\n",
2719 qeth_get_cardname(card),
2720 (card->info.mcl_level[0]) ? " (level: " : "",
2721 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2722 (card->info.mcl_level[0]) ? ")" : "",
2723 qeth_get_cardname_short(card));
2724 }
2725 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2726
2727 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2728 {
2729 struct qeth_buffer_pool_entry *entry;
2730
2731 QETH_CARD_TEXT(card, 5, "inwrklst");
2732
2733 list_for_each_entry(entry,
2734 &card->qdio.init_pool.entry_list, init_list) {
2735 qeth_put_buffer_pool_entry(card, entry);
2736 }
2737 }
2738
2739 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2740 struct qeth_card *card)
2741 {
2742 struct list_head *plh;
2743 struct qeth_buffer_pool_entry *entry;
2744 int i, free;
2745 struct page *page;
2746
2747 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2748 return NULL;
2749
2750 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2751 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2752 free = 1;
2753 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2754 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2755 free = 0;
2756 break;
2757 }
2758 }
2759 if (free) {
2760 list_del_init(&entry->list);
2761 return entry;
2762 }
2763 }
2764
2765 /* no free buffer in pool so take first one and swap pages */
2766 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2767 struct qeth_buffer_pool_entry, list);
2768 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2769 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2770 page = alloc_page(GFP_ATOMIC);
2771 if (!page) {
2772 return NULL;
2773 } else {
2774 free_page((unsigned long)entry->elements[i]);
2775 entry->elements[i] = page_address(page);
2776 if (card->options.performance_stats)
2777 card->perf_stats.sg_alloc_page_rx++;
2778 }
2779 }
2780 }
2781 list_del_init(&entry->list);
2782 return entry;
2783 }
2784
2785 static int qeth_init_input_buffer(struct qeth_card *card,
2786 struct qeth_qdio_buffer *buf)
2787 {
2788 struct qeth_buffer_pool_entry *pool_entry;
2789 int i;
2790
2791 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2792 buf->rx_skb = netdev_alloc_skb(card->dev,
2793 QETH_RX_PULL_LEN + ETH_HLEN);
2794 if (!buf->rx_skb)
2795 return 1;
2796 }
2797
2798 pool_entry = qeth_find_free_buffer_pool_entry(card);
2799 if (!pool_entry)
2800 return 1;
2801
2802 /*
2803 * since the buffer is accessed only from the input_tasklet
2804 * there shouldn't be a need to synchronize; also, since we use
2805 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2806 * buffers
2807 */
2808
2809 buf->pool_entry = pool_entry;
2810 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2811 buf->buffer->element[i].length = PAGE_SIZE;
2812 buf->buffer->element[i].addr = pool_entry->elements[i];
2813 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2814 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2815 else
2816 buf->buffer->element[i].eflags = 0;
2817 buf->buffer->element[i].sflags = 0;
2818 }
2819 return 0;
2820 }
2821
2822 int qeth_init_qdio_queues(struct qeth_card *card)
2823 {
2824 int i, j;
2825 int rc;
2826
2827 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2828
2829 /* inbound queue */
2830 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2831 memset(&card->rx, 0, sizeof(struct qeth_rx));
2832 qeth_initialize_working_pool_list(card);
2833 /*give only as many buffers to hardware as we have buffer pool entries*/
2834 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2835 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2836 card->qdio.in_q->next_buf_to_init =
2837 card->qdio.in_buf_pool.buf_count - 1;
2838 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2839 card->qdio.in_buf_pool.buf_count - 1);
2840 if (rc) {
2841 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2842 return rc;
2843 }
2844
2845 /* completion */
2846 rc = qeth_cq_init(card);
2847 if (rc) {
2848 return rc;
2849 }
2850
2851 /* outbound queue */
2852 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2853 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2854 QDIO_MAX_BUFFERS_PER_Q);
2855 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2856 qeth_clear_output_buffer(card->qdio.out_qs[i],
2857 card->qdio.out_qs[i]->bufs[j]);
2858 }
2859 card->qdio.out_qs[i]->card = card;
2860 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2861 card->qdio.out_qs[i]->do_pack = 0;
2862 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2863 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2864 atomic_set(&card->qdio.out_qs[i]->state,
2865 QETH_OUT_Q_UNLOCKED);
2866 }
2867 return 0;
2868 }
2869 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2870
2871 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2872 {
2873 switch (link_type) {
2874 case QETH_LINK_TYPE_HSTR:
2875 return 2;
2876 default:
2877 return 1;
2878 }
2879 }
2880
2881 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2882 struct qeth_ipa_cmd *cmd, __u8 command,
2883 enum qeth_prot_versions prot)
2884 {
2885 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2886 cmd->hdr.command = command;
2887 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2888 /* cmd->hdr.seqno is set by qeth_send_control_data() */
2889 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2890 cmd->hdr.rel_adapter_no = (u8) card->dev->dev_port;
2891 if (card->options.layer2)
2892 cmd->hdr.prim_version_no = 2;
2893 else
2894 cmd->hdr.prim_version_no = 1;
2895 cmd->hdr.param_count = 1;
2896 cmd->hdr.prot_version = prot;
2897 cmd->hdr.ipa_supported = 0;
2898 cmd->hdr.ipa_enabled = 0;
2899 }
2900
2901 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2902 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2903 {
2904 struct qeth_cmd_buffer *iob;
2905
2906 iob = qeth_get_buffer(&card->write);
2907 if (iob) {
2908 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot);
2909 } else {
2910 dev_warn(&card->gdev->dev,
2911 "The qeth driver ran out of channel command buffers\n");
2912 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2913 dev_name(&card->gdev->dev));
2914 }
2915
2916 return iob;
2917 }
2918 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2919
2920 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob)
2921 {
2922 u8 prot_type = qeth_mpc_select_prot_type(card);
2923
2924 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2925 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2926 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2927 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2928 }
2929 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2930
2931 /**
2932 * qeth_send_ipa_cmd() - send an IPA command
2933 *
2934 * See qeth_send_control_data() for explanation of the arguments.
2935 */
2936
2937 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2938 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2939 unsigned long),
2940 void *reply_param)
2941 {
2942 int rc;
2943
2944 QETH_CARD_TEXT(card, 4, "sendipa");
2945 qeth_prepare_ipa_cmd(card, iob);
2946 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2947 iob, reply_cb, reply_param);
2948 if (rc == -ETIME) {
2949 qeth_clear_ipacmd_list(card);
2950 qeth_schedule_recovery(card);
2951 }
2952 return rc;
2953 }
2954 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2955
2956 static int qeth_send_startlan(struct qeth_card *card)
2957 {
2958 int rc;
2959 struct qeth_cmd_buffer *iob;
2960
2961 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2962
2963 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2964 if (!iob)
2965 return -ENOMEM;
2966 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2967 return rc;
2968 }
2969
2970 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
2971 {
2972 if (!cmd->hdr.return_code)
2973 cmd->hdr.return_code =
2974 cmd->data.setadapterparms.hdr.return_code;
2975 return cmd->hdr.return_code;
2976 }
2977
2978 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2979 struct qeth_reply *reply, unsigned long data)
2980 {
2981 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2982
2983 QETH_CARD_TEXT(card, 3, "quyadpcb");
2984 if (qeth_setadpparms_inspect_rc(cmd))
2985 return 0;
2986
2987 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2988 card->info.link_type =
2989 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2990 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2991 }
2992 card->options.adp.supported_funcs =
2993 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2994 return 0;
2995 }
2996
2997 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2998 __u32 command, __u32 cmdlen)
2999 {
3000 struct qeth_cmd_buffer *iob;
3001 struct qeth_ipa_cmd *cmd;
3002
3003 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3004 QETH_PROT_IPV4);
3005 if (iob) {
3006 cmd = __ipa_cmd(iob);
3007 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3008 cmd->data.setadapterparms.hdr.command_code = command;
3009 cmd->data.setadapterparms.hdr.used_total = 1;
3010 cmd->data.setadapterparms.hdr.seq_no = 1;
3011 }
3012
3013 return iob;
3014 }
3015
3016 static int qeth_query_setadapterparms(struct qeth_card *card)
3017 {
3018 int rc;
3019 struct qeth_cmd_buffer *iob;
3020
3021 QETH_CARD_TEXT(card, 3, "queryadp");
3022 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3023 sizeof(struct qeth_ipacmd_setadpparms));
3024 if (!iob)
3025 return -ENOMEM;
3026 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3027 return rc;
3028 }
3029
3030 static int qeth_query_ipassists_cb(struct qeth_card *card,
3031 struct qeth_reply *reply, unsigned long data)
3032 {
3033 struct qeth_ipa_cmd *cmd;
3034
3035 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3036
3037 cmd = (struct qeth_ipa_cmd *) data;
3038
3039 switch (cmd->hdr.return_code) {
3040 case IPA_RC_NOTSUPP:
3041 case IPA_RC_L2_UNSUPPORTED_CMD:
3042 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3043 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3044 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3045 return -0;
3046 default:
3047 if (cmd->hdr.return_code) {
3048 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3049 "rc=%d\n",
3050 dev_name(&card->gdev->dev),
3051 cmd->hdr.return_code);
3052 return 0;
3053 }
3054 }
3055
3056 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3057 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3058 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3059 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3060 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3061 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3062 } else
3063 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3064 "\n", dev_name(&card->gdev->dev));
3065 return 0;
3066 }
3067
3068 static int qeth_query_ipassists(struct qeth_card *card,
3069 enum qeth_prot_versions prot)
3070 {
3071 int rc;
3072 struct qeth_cmd_buffer *iob;
3073
3074 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3075 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3076 if (!iob)
3077 return -ENOMEM;
3078 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3079 return rc;
3080 }
3081
3082 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3083 struct qeth_reply *reply, unsigned long data)
3084 {
3085 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3086 struct qeth_query_switch_attributes *attrs;
3087 struct qeth_switch_info *sw_info;
3088
3089 QETH_CARD_TEXT(card, 2, "qswiatcb");
3090 if (qeth_setadpparms_inspect_rc(cmd))
3091 return 0;
3092
3093 sw_info = (struct qeth_switch_info *)reply->param;
3094 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3095 sw_info->capabilities = attrs->capabilities;
3096 sw_info->settings = attrs->settings;
3097 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3098 sw_info->settings);
3099 return 0;
3100 }
3101
3102 int qeth_query_switch_attributes(struct qeth_card *card,
3103 struct qeth_switch_info *sw_info)
3104 {
3105 struct qeth_cmd_buffer *iob;
3106
3107 QETH_CARD_TEXT(card, 2, "qswiattr");
3108 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3109 return -EOPNOTSUPP;
3110 if (!netif_carrier_ok(card->dev))
3111 return -ENOMEDIUM;
3112 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3113 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3114 if (!iob)
3115 return -ENOMEM;
3116 return qeth_send_ipa_cmd(card, iob,
3117 qeth_query_switch_attributes_cb, sw_info);
3118 }
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 = __ipa_cmd(iob);
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 = __ipa_cmd(iob);
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 static int qeth_check_qdio_errors(struct qeth_card *card,
3221 struct qdio_buffer *buf,
3222 unsigned int qdio_error,
3223 const char *dbftext)
3224 {
3225 if (qdio_error) {
3226 QETH_CARD_TEXT(card, 2, dbftext);
3227 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3228 buf->element[15].sflags);
3229 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3230 buf->element[14].sflags);
3231 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3232 if ((buf->element[15].sflags) == 0x12) {
3233 card->stats.rx_dropped++;
3234 return 0;
3235 } else
3236 return 1;
3237 }
3238 return 0;
3239 }
3240
3241 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3242 {
3243 struct qeth_qdio_q *queue = card->qdio.in_q;
3244 struct list_head *lh;
3245 int count;
3246 int i;
3247 int rc;
3248 int newcount = 0;
3249
3250 count = (index < queue->next_buf_to_init)?
3251 card->qdio.in_buf_pool.buf_count -
3252 (queue->next_buf_to_init - index) :
3253 card->qdio.in_buf_pool.buf_count -
3254 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3255 /* only requeue at a certain threshold to avoid SIGAs */
3256 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3257 for (i = queue->next_buf_to_init;
3258 i < queue->next_buf_to_init + count; ++i) {
3259 if (qeth_init_input_buffer(card,
3260 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3261 break;
3262 } else {
3263 newcount++;
3264 }
3265 }
3266
3267 if (newcount < count) {
3268 /* we are in memory shortage so we switch back to
3269 traditional skb allocation and drop packages */
3270 atomic_set(&card->force_alloc_skb, 3);
3271 count = newcount;
3272 } else {
3273 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3274 }
3275
3276 if (!count) {
3277 i = 0;
3278 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3279 i++;
3280 if (i == card->qdio.in_buf_pool.buf_count) {
3281 QETH_CARD_TEXT(card, 2, "qsarbw");
3282 card->reclaim_index = index;
3283 schedule_delayed_work(
3284 &card->buffer_reclaim_work,
3285 QETH_RECLAIM_WORK_TIME);
3286 }
3287 return;
3288 }
3289
3290 /*
3291 * according to old code it should be avoided to requeue all
3292 * 128 buffers in order to benefit from PCI avoidance.
3293 * this function keeps at least one buffer (the buffer at
3294 * 'index') un-requeued -> this buffer is the first buffer that
3295 * will be requeued the next time
3296 */
3297 if (card->options.performance_stats) {
3298 card->perf_stats.inbound_do_qdio_cnt++;
3299 card->perf_stats.inbound_do_qdio_start_time =
3300 qeth_get_micros();
3301 }
3302 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3303 queue->next_buf_to_init, count);
3304 if (card->options.performance_stats)
3305 card->perf_stats.inbound_do_qdio_time +=
3306 qeth_get_micros() -
3307 card->perf_stats.inbound_do_qdio_start_time;
3308 if (rc) {
3309 QETH_CARD_TEXT(card, 2, "qinberr");
3310 }
3311 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3312 QDIO_MAX_BUFFERS_PER_Q;
3313 }
3314 }
3315
3316 static void qeth_buffer_reclaim_work(struct work_struct *work)
3317 {
3318 struct qeth_card *card = container_of(work, struct qeth_card,
3319 buffer_reclaim_work.work);
3320
3321 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3322 qeth_queue_input_buffer(card, card->reclaim_index);
3323 }
3324
3325 static void 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;
3342
3343 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3344 return;
3345
3346 QETH_CARD_TEXT(card, 1, "lnkfail");
3347 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3348 (u16)qdio_err, (u8)sbalf15);
3349 }
3350
3351 /**
3352 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3353 * @queue: queue to check for packing buffer
3354 *
3355 * Returns number of buffers that were prepared for flush.
3356 */
3357 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3358 {
3359 struct qeth_qdio_out_buffer *buffer;
3360
3361 buffer = queue->bufs[queue->next_buf_to_fill];
3362 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3363 (buffer->next_element_to_fill > 0)) {
3364 /* it's a packing buffer */
3365 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3366 queue->next_buf_to_fill =
3367 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3368 return 1;
3369 }
3370 return 0;
3371 }
3372
3373 /*
3374 * Switched to packing state if the number of used buffers on a queue
3375 * reaches a certain limit.
3376 */
3377 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3378 {
3379 if (!queue->do_pack) {
3380 if (atomic_read(&queue->used_buffers)
3381 >= QETH_HIGH_WATERMARK_PACK){
3382 /* switch non-PACKING -> PACKING */
3383 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3384 if (queue->card->options.performance_stats)
3385 queue->card->perf_stats.sc_dp_p++;
3386 queue->do_pack = 1;
3387 }
3388 }
3389 }
3390
3391 /*
3392 * Switches from packing to non-packing mode. If there is a packing
3393 * buffer on the queue this buffer will be prepared to be flushed.
3394 * In that case 1 is returned to inform the caller. If no buffer
3395 * has to be flushed, zero is returned.
3396 */
3397 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3398 {
3399 if (queue->do_pack) {
3400 if (atomic_read(&queue->used_buffers)
3401 <= QETH_LOW_WATERMARK_PACK) {
3402 /* switch PACKING -> non-PACKING */
3403 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3404 if (queue->card->options.performance_stats)
3405 queue->card->perf_stats.sc_p_dp++;
3406 queue->do_pack = 0;
3407 return qeth_prep_flush_pack_buffer(queue);
3408 }
3409 }
3410 return 0;
3411 }
3412
3413 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3414 int count)
3415 {
3416 struct qeth_qdio_out_buffer *buf;
3417 int rc;
3418 int i;
3419 unsigned int qdio_flags;
3420
3421 for (i = index; i < index + count; ++i) {
3422 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3423 buf = queue->bufs[bidx];
3424 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3425 SBAL_EFLAGS_LAST_ENTRY;
3426
3427 if (queue->bufstates)
3428 queue->bufstates[bidx].user = buf;
3429
3430 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3431 continue;
3432
3433 if (!queue->do_pack) {
3434 if ((atomic_read(&queue->used_buffers) >=
3435 (QETH_HIGH_WATERMARK_PACK -
3436 QETH_WATERMARK_PACK_FUZZ)) &&
3437 !atomic_read(&queue->set_pci_flags_count)) {
3438 /* it's likely that we'll go to packing
3439 * mode soon */
3440 atomic_inc(&queue->set_pci_flags_count);
3441 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3442 }
3443 } else {
3444 if (!atomic_read(&queue->set_pci_flags_count)) {
3445 /*
3446 * there's no outstanding PCI any more, so we
3447 * have to request a PCI to be sure the the PCI
3448 * will wake at some time in the future then we
3449 * can flush packed buffers that might still be
3450 * hanging around, which can happen if no
3451 * further send was requested by the stack
3452 */
3453 atomic_inc(&queue->set_pci_flags_count);
3454 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3455 }
3456 }
3457 }
3458
3459 netif_trans_update(queue->card->dev);
3460 if (queue->card->options.performance_stats) {
3461 queue->card->perf_stats.outbound_do_qdio_cnt++;
3462 queue->card->perf_stats.outbound_do_qdio_start_time =
3463 qeth_get_micros();
3464 }
3465 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3466 if (atomic_read(&queue->set_pci_flags_count))
3467 qdio_flags |= QDIO_FLAG_PCI_OUT;
3468 atomic_add(count, &queue->used_buffers);
3469
3470 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3471 queue->queue_no, index, count);
3472 if (queue->card->options.performance_stats)
3473 queue->card->perf_stats.outbound_do_qdio_time +=
3474 qeth_get_micros() -
3475 queue->card->perf_stats.outbound_do_qdio_start_time;
3476 if (rc) {
3477 queue->card->stats.tx_errors += count;
3478 /* ignore temporary SIGA errors without busy condition */
3479 if (rc == -ENOBUFS)
3480 return;
3481 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3482 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3483 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3484 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3485 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3486
3487 /* this must not happen under normal circumstances. if it
3488 * happens something is really wrong -> recover */
3489 qeth_schedule_recovery(queue->card);
3490 return;
3491 }
3492 if (queue->card->options.performance_stats)
3493 queue->card->perf_stats.bufs_sent += count;
3494 }
3495
3496 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3497 {
3498 int index;
3499 int flush_cnt = 0;
3500 int q_was_packing = 0;
3501
3502 /*
3503 * check if weed have to switch to non-packing mode or if
3504 * we have to get a pci flag out on the queue
3505 */
3506 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3507 !atomic_read(&queue->set_pci_flags_count)) {
3508 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3509 QETH_OUT_Q_UNLOCKED) {
3510 /*
3511 * If we get in here, there was no action in
3512 * do_send_packet. So, we check if there is a
3513 * packing buffer to be flushed here.
3514 */
3515 netif_stop_queue(queue->card->dev);
3516 index = queue->next_buf_to_fill;
3517 q_was_packing = queue->do_pack;
3518 /* queue->do_pack may change */
3519 barrier();
3520 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3521 if (!flush_cnt &&
3522 !atomic_read(&queue->set_pci_flags_count))
3523 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3524 if (queue->card->options.performance_stats &&
3525 q_was_packing)
3526 queue->card->perf_stats.bufs_sent_pack +=
3527 flush_cnt;
3528 if (flush_cnt)
3529 qeth_flush_buffers(queue, index, flush_cnt);
3530 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3531 }
3532 }
3533 }
3534
3535 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3536 unsigned long card_ptr)
3537 {
3538 struct qeth_card *card = (struct qeth_card *)card_ptr;
3539
3540 if (card->dev->flags & IFF_UP)
3541 napi_schedule(&card->napi);
3542 }
3543
3544 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3545 {
3546 int rc;
3547
3548 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3549 rc = -1;
3550 goto out;
3551 } else {
3552 if (card->options.cq == cq) {
3553 rc = 0;
3554 goto out;
3555 }
3556
3557 if (card->state != CARD_STATE_DOWN &&
3558 card->state != CARD_STATE_RECOVER) {
3559 rc = -1;
3560 goto out;
3561 }
3562
3563 qeth_free_qdio_buffers(card);
3564 card->options.cq = cq;
3565 rc = 0;
3566 }
3567 out:
3568 return rc;
3569
3570 }
3571 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3572
3573 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3574 unsigned int queue, int first_element,
3575 int count)
3576 {
3577 struct qeth_qdio_q *cq = card->qdio.c_q;
3578 int i;
3579 int rc;
3580
3581 if (!qeth_is_cq(card, queue))
3582 goto out;
3583
3584 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3585 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3586 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3587
3588 if (qdio_err) {
3589 netif_stop_queue(card->dev);
3590 qeth_schedule_recovery(card);
3591 goto out;
3592 }
3593
3594 if (card->options.performance_stats) {
3595 card->perf_stats.cq_cnt++;
3596 card->perf_stats.cq_start_time = qeth_get_micros();
3597 }
3598
3599 for (i = first_element; i < first_element + count; ++i) {
3600 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3601 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3602 int e = 0;
3603
3604 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3605 buffer->element[e].addr) {
3606 unsigned long phys_aob_addr;
3607
3608 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3609 qeth_qdio_handle_aob(card, phys_aob_addr);
3610 ++e;
3611 }
3612 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3613 }
3614 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3615 card->qdio.c_q->next_buf_to_init,
3616 count);
3617 if (rc) {
3618 dev_warn(&card->gdev->dev,
3619 "QDIO reported an error, rc=%i\n", rc);
3620 QETH_CARD_TEXT(card, 2, "qcqherr");
3621 }
3622 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3623 + count) % QDIO_MAX_BUFFERS_PER_Q;
3624
3625 netif_wake_queue(card->dev);
3626
3627 if (card->options.performance_stats) {
3628 int delta_t = qeth_get_micros();
3629 delta_t -= card->perf_stats.cq_start_time;
3630 card->perf_stats.cq_time += delta_t;
3631 }
3632 out:
3633 return;
3634 }
3635
3636 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3637 unsigned int qdio_err, int queue,
3638 int first_elem, int count,
3639 unsigned long card_ptr)
3640 {
3641 struct qeth_card *card = (struct qeth_card *)card_ptr;
3642
3643 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3644 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3645
3646 if (qeth_is_cq(card, queue))
3647 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3648 else if (qdio_err)
3649 qeth_schedule_recovery(card);
3650 }
3651
3652 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3653 unsigned int qdio_error, int __queue,
3654 int first_element, int count,
3655 unsigned long card_ptr)
3656 {
3657 struct qeth_card *card = (struct qeth_card *) card_ptr;
3658 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3659 struct qeth_qdio_out_buffer *buffer;
3660 int i;
3661
3662 QETH_CARD_TEXT(card, 6, "qdouhdl");
3663 if (qdio_error & QDIO_ERROR_FATAL) {
3664 QETH_CARD_TEXT(card, 2, "achkcond");
3665 netif_stop_queue(card->dev);
3666 qeth_schedule_recovery(card);
3667 return;
3668 }
3669 if (card->options.performance_stats) {
3670 card->perf_stats.outbound_handler_cnt++;
3671 card->perf_stats.outbound_handler_start_time =
3672 qeth_get_micros();
3673 }
3674 for (i = first_element; i < (first_element + count); ++i) {
3675 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3676 buffer = queue->bufs[bidx];
3677 qeth_handle_send_error(card, buffer, qdio_error);
3678
3679 if (queue->bufstates &&
3680 (queue->bufstates[bidx].flags &
3681 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3682 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3683
3684 if (atomic_cmpxchg(&buffer->state,
3685 QETH_QDIO_BUF_PRIMED,
3686 QETH_QDIO_BUF_PENDING) ==
3687 QETH_QDIO_BUF_PRIMED) {
3688 qeth_notify_skbs(queue, buffer,
3689 TX_NOTIFY_PENDING);
3690 }
3691 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3692
3693 /* prepare the queue slot for re-use: */
3694 qeth_scrub_qdio_buffer(buffer->buffer,
3695 QETH_MAX_BUFFER_ELEMENTS(card));
3696 if (qeth_init_qdio_out_buf(queue, bidx)) {
3697 QETH_CARD_TEXT(card, 2, "outofbuf");
3698 qeth_schedule_recovery(card);
3699 }
3700 } else {
3701 if (card->options.cq == QETH_CQ_ENABLED) {
3702 enum iucv_tx_notify n;
3703
3704 n = qeth_compute_cq_notification(
3705 buffer->buffer->element[15].sflags, 0);
3706 qeth_notify_skbs(queue, buffer, n);
3707 }
3708
3709 qeth_clear_output_buffer(queue, buffer);
3710 }
3711 qeth_cleanup_handled_pending(queue, bidx, 0);
3712 }
3713 atomic_sub(count, &queue->used_buffers);
3714 /* check if we need to do something on this outbound queue */
3715 if (card->info.type != QETH_CARD_TYPE_IQD)
3716 qeth_check_outbound_queue(queue);
3717
3718 netif_wake_queue(queue->card->dev);
3719 if (card->options.performance_stats)
3720 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3721 card->perf_stats.outbound_handler_start_time;
3722 }
3723
3724 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3725 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3726 {
3727 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3728 return 2;
3729 return queue_num;
3730 }
3731
3732 /**
3733 * Note: Function assumes that we have 4 outbound queues.
3734 */
3735 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3736 int ipv)
3737 {
3738 __be16 *tci;
3739 u8 tos;
3740
3741 switch (card->qdio.do_prio_queueing) {
3742 case QETH_PRIO_Q_ING_TOS:
3743 case QETH_PRIO_Q_ING_PREC:
3744 switch (ipv) {
3745 case 4:
3746 tos = ipv4_get_dsfield(ip_hdr(skb));
3747 break;
3748 case 6:
3749 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3750 break;
3751 default:
3752 return card->qdio.default_out_queue;
3753 }
3754 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3755 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3756 if (tos & IPTOS_MINCOST)
3757 return qeth_cut_iqd_prio(card, 3);
3758 if (tos & IPTOS_RELIABILITY)
3759 return 2;
3760 if (tos & IPTOS_THROUGHPUT)
3761 return 1;
3762 if (tos & IPTOS_LOWDELAY)
3763 return 0;
3764 break;
3765 case QETH_PRIO_Q_ING_SKB:
3766 if (skb->priority > 5)
3767 return 0;
3768 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3769 case QETH_PRIO_Q_ING_VLAN:
3770 tci = &((struct ethhdr *)skb->data)->h_proto;
3771 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3772 return qeth_cut_iqd_prio(card,
3773 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3774 break;
3775 default:
3776 break;
3777 }
3778 return card->qdio.default_out_queue;
3779 }
3780 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3781
3782 /**
3783 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3784 * @skb: SKB address
3785 *
3786 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3787 * fragmented part of the SKB. Returns zero for linear SKB.
3788 */
3789 int qeth_get_elements_for_frags(struct sk_buff *skb)
3790 {
3791 int cnt, elements = 0;
3792
3793 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3794 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3795
3796 elements += qeth_get_elements_for_range(
3797 (addr_t)skb_frag_address(frag),
3798 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3799 }
3800 return elements;
3801 }
3802 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3803
3804 static unsigned int qeth_count_elements(struct sk_buff *skb, int data_offset)
3805 {
3806 unsigned int elements = qeth_get_elements_for_frags(skb);
3807 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3808 addr_t start = (addr_t)skb->data + data_offset;
3809
3810 if (start != end)
3811 elements += qeth_get_elements_for_range(start, end);
3812 return elements;
3813 }
3814
3815 /**
3816 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags.
3817 * @card: qeth card structure, to check max. elems.
3818 * @skb: SKB address
3819 * @extra_elems: extra elems needed, to check against max.
3820 * @data_offset: range starts at skb->data + data_offset
3821 *
3822 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3823 * skb data, including linear part and fragments. Checks if the result plus
3824 * extra_elems fits under the limit for the card. Returns 0 if it does not.
3825 * Note: extra_elems is not included in the returned result.
3826 */
3827 int qeth_get_elements_no(struct qeth_card *card,
3828 struct sk_buff *skb, int extra_elems, int data_offset)
3829 {
3830 int elements = qeth_count_elements(skb, data_offset);
3831
3832 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3833 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3834 "(Number=%d / Length=%d). Discarded.\n",
3835 elements + extra_elems, skb->len);
3836 return 0;
3837 }
3838 return elements;
3839 }
3840 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3841
3842 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3843 {
3844 int hroom, inpage, rest;
3845
3846 if (((unsigned long)skb->data & PAGE_MASK) !=
3847 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3848 hroom = skb_headroom(skb);
3849 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3850 rest = len - inpage;
3851 if (rest > hroom)
3852 return 1;
3853 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3854 skb->data -= rest;
3855 skb->tail -= rest;
3856 *hdr = (struct qeth_hdr *)skb->data;
3857 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3858 }
3859 return 0;
3860 }
3861 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3862
3863 /**
3864 * qeth_add_hw_header() - add a HW header to an skb.
3865 * @skb: skb that the HW header should be added to.
3866 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3867 * it contains a valid pointer to a qeth_hdr.
3868 * @hdr_len: length of the HW header.
3869 * @proto_len: length of protocol headers that need to be in same page as the
3870 * HW header.
3871 *
3872 * Returns the pushed length. If the header can't be pushed on
3873 * (eg. because it would cross a page boundary), it is allocated from
3874 * the cache instead and 0 is returned.
3875 * The number of needed buffer elements is returned in @elements.
3876 * Error to create the hdr is indicated by returning with < 0.
3877 */
3878 int qeth_add_hw_header(struct qeth_card *card, struct sk_buff *skb,
3879 struct qeth_hdr **hdr, unsigned int hdr_len,
3880 unsigned int proto_len, unsigned int *elements)
3881 {
3882 const unsigned int max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
3883 const unsigned int contiguous = proto_len ? proto_len : 1;
3884 unsigned int __elements;
3885 addr_t start, end;
3886 bool push_ok;
3887 int rc;
3888
3889 check_layout:
3890 start = (addr_t)skb->data - hdr_len;
3891 end = (addr_t)skb->data;
3892
3893 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3894 /* Push HW header into same page as first protocol header. */
3895 push_ok = true;
3896 __elements = qeth_count_elements(skb, 0);
3897 } else if (!proto_len && qeth_get_elements_for_range(start, end) == 1) {
3898 /* Push HW header into a new page. */
3899 push_ok = true;
3900 __elements = 1 + qeth_count_elements(skb, 0);
3901 } else {
3902 /* Use header cache, copy protocol headers up. */
3903 push_ok = false;
3904 __elements = 1 + qeth_count_elements(skb, proto_len);
3905 }
3906
3907 /* Compress skb to fit into one IO buffer: */
3908 if (__elements > max_elements) {
3909 if (!skb_is_nonlinear(skb)) {
3910 /* Drop it, no easy way of shrinking it further. */
3911 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3912 max_elements, __elements, skb->len);
3913 return -E2BIG;
3914 }
3915
3916 rc = skb_linearize(skb);
3917 if (card->options.performance_stats) {
3918 if (rc)
3919 card->perf_stats.tx_linfail++;
3920 else
3921 card->perf_stats.tx_lin++;
3922 }
3923 if (rc)
3924 return rc;
3925
3926 /* Linearization changed the layout, re-evaluate: */
3927 goto check_layout;
3928 }
3929
3930 *elements = __elements;
3931 /* Add the header: */
3932 if (push_ok) {
3933 *hdr = skb_push(skb, hdr_len);
3934 return hdr_len;
3935 }
3936 /* fall back */
3937 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3938 if (!*hdr)
3939 return -ENOMEM;
3940 /* Copy protocol headers behind HW header: */
3941 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3942 return 0;
3943 }
3944 EXPORT_SYMBOL_GPL(qeth_add_hw_header);
3945
3946 static void __qeth_fill_buffer(struct sk_buff *skb,
3947 struct qeth_qdio_out_buffer *buf,
3948 bool is_first_elem, unsigned int offset)
3949 {
3950 struct qdio_buffer *buffer = buf->buffer;
3951 int element = buf->next_element_to_fill;
3952 int length = skb_headlen(skb) - offset;
3953 char *data = skb->data + offset;
3954 int length_here, cnt;
3955
3956 /* map linear part into buffer element(s) */
3957 while (length > 0) {
3958 /* length_here is the remaining amount of data in this page */
3959 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3960 if (length < length_here)
3961 length_here = length;
3962
3963 buffer->element[element].addr = data;
3964 buffer->element[element].length = length_here;
3965 length -= length_here;
3966 if (is_first_elem) {
3967 is_first_elem = false;
3968 if (length || skb_is_nonlinear(skb))
3969 /* skb needs additional elements */
3970 buffer->element[element].eflags =
3971 SBAL_EFLAGS_FIRST_FRAG;
3972 else
3973 buffer->element[element].eflags = 0;
3974 } else {
3975 buffer->element[element].eflags =
3976 SBAL_EFLAGS_MIDDLE_FRAG;
3977 }
3978 data += length_here;
3979 element++;
3980 }
3981
3982 /* map page frags into buffer element(s) */
3983 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3984 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3985
3986 data = skb_frag_address(frag);
3987 length = skb_frag_size(frag);
3988 while (length > 0) {
3989 length_here = PAGE_SIZE -
3990 ((unsigned long) data % PAGE_SIZE);
3991 if (length < length_here)
3992 length_here = length;
3993
3994 buffer->element[element].addr = data;
3995 buffer->element[element].length = length_here;
3996 buffer->element[element].eflags =
3997 SBAL_EFLAGS_MIDDLE_FRAG;
3998 length -= length_here;
3999 data += length_here;
4000 element++;
4001 }
4002 }
4003
4004 if (buffer->element[element - 1].eflags)
4005 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4006 buf->next_element_to_fill = element;
4007 }
4008
4009 /**
4010 * qeth_fill_buffer() - map skb into an output buffer
4011 * @queue: QDIO queue to submit the buffer on
4012 * @buf: buffer to transport the skb
4013 * @skb: skb to map into the buffer
4014 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
4015 * from qeth_core_header_cache.
4016 * @offset: when mapping the skb, start at skb->data + offset
4017 * @hd_len: if > 0, build a dedicated header element of this size
4018 */
4019 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
4020 struct qeth_qdio_out_buffer *buf,
4021 struct sk_buff *skb, struct qeth_hdr *hdr,
4022 unsigned int offset, unsigned int hd_len)
4023 {
4024 struct qdio_buffer *buffer = buf->buffer;
4025 bool is_first_elem = true;
4026 int flush_cnt = 0;
4027
4028 refcount_inc(&skb->users);
4029 skb_queue_tail(&buf->skb_list, skb);
4030
4031 /* build dedicated header element */
4032 if (hd_len) {
4033 int element = buf->next_element_to_fill;
4034 is_first_elem = false;
4035
4036 buffer->element[element].addr = hdr;
4037 buffer->element[element].length = hd_len;
4038 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4039 /* remember to free cache-allocated qeth_hdr: */
4040 buf->is_header[element] = ((void *)hdr != skb->data);
4041 buf->next_element_to_fill++;
4042 }
4043
4044 __qeth_fill_buffer(skb, buf, is_first_elem, offset);
4045
4046 if (!queue->do_pack) {
4047 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4048 /* set state to PRIMED -> will be flushed */
4049 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4050 flush_cnt = 1;
4051 } else {
4052 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4053 if (queue->card->options.performance_stats)
4054 queue->card->perf_stats.skbs_sent_pack++;
4055 if (buf->next_element_to_fill >=
4056 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4057 /*
4058 * packed buffer if full -> set state PRIMED
4059 * -> will be flushed
4060 */
4061 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4062 flush_cnt = 1;
4063 }
4064 }
4065 return flush_cnt;
4066 }
4067
4068 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4069 struct qeth_hdr *hdr, unsigned int offset,
4070 unsigned int hd_len)
4071 {
4072 int index = queue->next_buf_to_fill;
4073 struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
4074
4075 /*
4076 * check if buffer is empty to make sure that we do not 'overtake'
4077 * ourselves and try to fill a buffer that is already primed
4078 */
4079 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4080 return -EBUSY;
4081 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
4082 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4083 qeth_flush_buffers(queue, index, 1);
4084 return 0;
4085 }
4086 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4087
4088 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4089 struct sk_buff *skb, struct qeth_hdr *hdr,
4090 unsigned int offset, unsigned int hd_len,
4091 int elements_needed)
4092 {
4093 struct qeth_qdio_out_buffer *buffer;
4094 int start_index;
4095 int flush_count = 0;
4096 int do_pack = 0;
4097 int tmp;
4098 int rc = 0;
4099
4100 /* spin until we get the queue ... */
4101 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4102 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4103 start_index = queue->next_buf_to_fill;
4104 buffer = queue->bufs[queue->next_buf_to_fill];
4105 /*
4106 * check if buffer is empty to make sure that we do not 'overtake'
4107 * ourselves and try to fill a buffer that is already primed
4108 */
4109 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4110 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4111 return -EBUSY;
4112 }
4113 /* check if we need to switch packing state of this queue */
4114 qeth_switch_to_packing_if_needed(queue);
4115 if (queue->do_pack) {
4116 do_pack = 1;
4117 /* does packet fit in current buffer? */
4118 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4119 buffer->next_element_to_fill) < elements_needed) {
4120 /* ... no -> set state PRIMED */
4121 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4122 flush_count++;
4123 queue->next_buf_to_fill =
4124 (queue->next_buf_to_fill + 1) %
4125 QDIO_MAX_BUFFERS_PER_Q;
4126 buffer = queue->bufs[queue->next_buf_to_fill];
4127 /* we did a step forward, so check buffer state
4128 * again */
4129 if (atomic_read(&buffer->state) !=
4130 QETH_QDIO_BUF_EMPTY) {
4131 qeth_flush_buffers(queue, start_index,
4132 flush_count);
4133 atomic_set(&queue->state,
4134 QETH_OUT_Q_UNLOCKED);
4135 rc = -EBUSY;
4136 goto out;
4137 }
4138 }
4139 }
4140 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4141 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4142 QDIO_MAX_BUFFERS_PER_Q;
4143 flush_count += tmp;
4144 if (flush_count)
4145 qeth_flush_buffers(queue, start_index, flush_count);
4146 else if (!atomic_read(&queue->set_pci_flags_count))
4147 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4148 /*
4149 * queue->state will go from LOCKED -> UNLOCKED or from
4150 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4151 * (switch packing state or flush buffer to get another pci flag out).
4152 * In that case we will enter this loop
4153 */
4154 while (atomic_dec_return(&queue->state)) {
4155 start_index = queue->next_buf_to_fill;
4156 /* check if we can go back to non-packing state */
4157 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4158 /*
4159 * check if we need to flush a packing buffer to get a pci
4160 * flag out on the queue
4161 */
4162 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4163 tmp = qeth_prep_flush_pack_buffer(queue);
4164 if (tmp) {
4165 qeth_flush_buffers(queue, start_index, tmp);
4166 flush_count += tmp;
4167 }
4168 }
4169 out:
4170 /* at this point the queue is UNLOCKED again */
4171 if (queue->card->options.performance_stats && do_pack)
4172 queue->card->perf_stats.bufs_sent_pack += flush_count;
4173
4174 return rc;
4175 }
4176 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4177
4178 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4179 struct qeth_reply *reply, unsigned long data)
4180 {
4181 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4182 struct qeth_ipacmd_setadpparms *setparms;
4183
4184 QETH_CARD_TEXT(card, 4, "prmadpcb");
4185
4186 setparms = &(cmd->data.setadapterparms);
4187 if (qeth_setadpparms_inspect_rc(cmd)) {
4188 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4189 setparms->data.mode = SET_PROMISC_MODE_OFF;
4190 }
4191 card->info.promisc_mode = setparms->data.mode;
4192 return 0;
4193 }
4194
4195 void qeth_setadp_promisc_mode(struct qeth_card *card)
4196 {
4197 enum qeth_ipa_promisc_modes mode;
4198 struct net_device *dev = card->dev;
4199 struct qeth_cmd_buffer *iob;
4200 struct qeth_ipa_cmd *cmd;
4201
4202 QETH_CARD_TEXT(card, 4, "setprom");
4203
4204 if (((dev->flags & IFF_PROMISC) &&
4205 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4206 (!(dev->flags & IFF_PROMISC) &&
4207 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4208 return;
4209 mode = SET_PROMISC_MODE_OFF;
4210 if (dev->flags & IFF_PROMISC)
4211 mode = SET_PROMISC_MODE_ON;
4212 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4213
4214 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4215 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4216 if (!iob)
4217 return;
4218 cmd = __ipa_cmd(iob);
4219 cmd->data.setadapterparms.data.mode = mode;
4220 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4221 }
4222 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4223
4224 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4225 {
4226 struct qeth_card *card;
4227
4228 card = dev->ml_priv;
4229
4230 QETH_CARD_TEXT(card, 5, "getstat");
4231
4232 return &card->stats;
4233 }
4234 EXPORT_SYMBOL_GPL(qeth_get_stats);
4235
4236 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4237 struct qeth_reply *reply, unsigned long data)
4238 {
4239 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4240
4241 QETH_CARD_TEXT(card, 4, "chgmaccb");
4242 if (qeth_setadpparms_inspect_rc(cmd))
4243 return 0;
4244
4245 if (!card->options.layer2 ||
4246 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4247 ether_addr_copy(card->dev->dev_addr,
4248 cmd->data.setadapterparms.data.change_addr.addr);
4249 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4250 }
4251 return 0;
4252 }
4253
4254 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4255 {
4256 int rc;
4257 struct qeth_cmd_buffer *iob;
4258 struct qeth_ipa_cmd *cmd;
4259
4260 QETH_CARD_TEXT(card, 4, "chgmac");
4261
4262 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4263 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4264 sizeof(struct qeth_change_addr));
4265 if (!iob)
4266 return -ENOMEM;
4267 cmd = __ipa_cmd(iob);
4268 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4269 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4270 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4271 card->dev->dev_addr);
4272 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4273 NULL);
4274 return rc;
4275 }
4276 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4277
4278 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4279 struct qeth_reply *reply, unsigned long data)
4280 {
4281 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4282 struct qeth_set_access_ctrl *access_ctrl_req;
4283 int fallback = *(int *)reply->param;
4284
4285 QETH_CARD_TEXT(card, 4, "setaccb");
4286 if (cmd->hdr.return_code)
4287 return 0;
4288 qeth_setadpparms_inspect_rc(cmd);
4289
4290 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4291 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4292 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4293 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4294 cmd->data.setadapterparms.hdr.return_code);
4295 if (cmd->data.setadapterparms.hdr.return_code !=
4296 SET_ACCESS_CTRL_RC_SUCCESS)
4297 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4298 card->gdev->dev.kobj.name,
4299 access_ctrl_req->subcmd_code,
4300 cmd->data.setadapterparms.hdr.return_code);
4301 switch (cmd->data.setadapterparms.hdr.return_code) {
4302 case SET_ACCESS_CTRL_RC_SUCCESS:
4303 if (card->options.isolation == ISOLATION_MODE_NONE) {
4304 dev_info(&card->gdev->dev,
4305 "QDIO data connection isolation is deactivated\n");
4306 } else {
4307 dev_info(&card->gdev->dev,
4308 "QDIO data connection isolation is activated\n");
4309 }
4310 break;
4311 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4312 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4313 "deactivated\n", dev_name(&card->gdev->dev));
4314 if (fallback)
4315 card->options.isolation = card->options.prev_isolation;
4316 break;
4317 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4318 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4319 " activated\n", dev_name(&card->gdev->dev));
4320 if (fallback)
4321 card->options.isolation = card->options.prev_isolation;
4322 break;
4323 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4324 dev_err(&card->gdev->dev, "Adapter does not "
4325 "support QDIO data connection isolation\n");
4326 break;
4327 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4328 dev_err(&card->gdev->dev,
4329 "Adapter is dedicated. "
4330 "QDIO data connection isolation not supported\n");
4331 if (fallback)
4332 card->options.isolation = card->options.prev_isolation;
4333 break;
4334 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4335 dev_err(&card->gdev->dev,
4336 "TSO does not permit QDIO data connection isolation\n");
4337 if (fallback)
4338 card->options.isolation = card->options.prev_isolation;
4339 break;
4340 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4341 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4342 "support reflective relay mode\n");
4343 if (fallback)
4344 card->options.isolation = card->options.prev_isolation;
4345 break;
4346 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4347 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4348 "enabled at the adjacent switch port");
4349 if (fallback)
4350 card->options.isolation = card->options.prev_isolation;
4351 break;
4352 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4353 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4354 "at the adjacent switch failed\n");
4355 break;
4356 default:
4357 /* this should never happen */
4358 if (fallback)
4359 card->options.isolation = card->options.prev_isolation;
4360 break;
4361 }
4362 return 0;
4363 }
4364
4365 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4366 enum qeth_ipa_isolation_modes isolation, int fallback)
4367 {
4368 int rc;
4369 struct qeth_cmd_buffer *iob;
4370 struct qeth_ipa_cmd *cmd;
4371 struct qeth_set_access_ctrl *access_ctrl_req;
4372
4373 QETH_CARD_TEXT(card, 4, "setacctl");
4374
4375 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4376 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4377
4378 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4379 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4380 sizeof(struct qeth_set_access_ctrl));
4381 if (!iob)
4382 return -ENOMEM;
4383 cmd = __ipa_cmd(iob);
4384 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4385 access_ctrl_req->subcmd_code = isolation;
4386
4387 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4388 &fallback);
4389 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4390 return rc;
4391 }
4392
4393 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4394 {
4395 int rc = 0;
4396
4397 QETH_CARD_TEXT(card, 4, "setactlo");
4398
4399 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4400 card->info.type == QETH_CARD_TYPE_OSX) &&
4401 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4402 rc = qeth_setadpparms_set_access_ctrl(card,
4403 card->options.isolation, fallback);
4404 if (rc) {
4405 QETH_DBF_MESSAGE(3,
4406 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4407 card->gdev->dev.kobj.name,
4408 rc);
4409 rc = -EOPNOTSUPP;
4410 }
4411 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4412 card->options.isolation = ISOLATION_MODE_NONE;
4413
4414 dev_err(&card->gdev->dev, "Adapter does not "
4415 "support QDIO data connection isolation\n");
4416 rc = -EOPNOTSUPP;
4417 }
4418 return rc;
4419 }
4420 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4421
4422 void qeth_tx_timeout(struct net_device *dev)
4423 {
4424 struct qeth_card *card;
4425
4426 card = dev->ml_priv;
4427 QETH_CARD_TEXT(card, 4, "txtimeo");
4428 card->stats.tx_errors++;
4429 qeth_schedule_recovery(card);
4430 }
4431 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4432
4433 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4434 {
4435 struct qeth_card *card = dev->ml_priv;
4436 int rc = 0;
4437
4438 switch (regnum) {
4439 case MII_BMCR: /* Basic mode control register */
4440 rc = BMCR_FULLDPLX;
4441 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4442 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4443 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4444 rc |= BMCR_SPEED100;
4445 break;
4446 case MII_BMSR: /* Basic mode status register */
4447 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4448 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4449 BMSR_100BASE4;
4450 break;
4451 case MII_PHYSID1: /* PHYS ID 1 */
4452 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4453 dev->dev_addr[2];
4454 rc = (rc >> 5) & 0xFFFF;
4455 break;
4456 case MII_PHYSID2: /* PHYS ID 2 */
4457 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4458 break;
4459 case MII_ADVERTISE: /* Advertisement control reg */
4460 rc = ADVERTISE_ALL;
4461 break;
4462 case MII_LPA: /* Link partner ability reg */
4463 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4464 LPA_100BASE4 | LPA_LPACK;
4465 break;
4466 case MII_EXPANSION: /* Expansion register */
4467 break;
4468 case MII_DCOUNTER: /* disconnect counter */
4469 break;
4470 case MII_FCSCOUNTER: /* false carrier counter */
4471 break;
4472 case MII_NWAYTEST: /* N-way auto-neg test register */
4473 break;
4474 case MII_RERRCOUNTER: /* rx error counter */
4475 rc = card->stats.rx_errors;
4476 break;
4477 case MII_SREVISION: /* silicon revision */
4478 break;
4479 case MII_RESV1: /* reserved 1 */
4480 break;
4481 case MII_LBRERROR: /* loopback, rx, bypass error */
4482 break;
4483 case MII_PHYADDR: /* physical address */
4484 break;
4485 case MII_RESV2: /* reserved 2 */
4486 break;
4487 case MII_TPISTATUS: /* TPI status for 10mbps */
4488 break;
4489 case MII_NCONFIG: /* network interface config */
4490 break;
4491 default:
4492 break;
4493 }
4494 return rc;
4495 }
4496
4497 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4498 struct qeth_cmd_buffer *iob, int len,
4499 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4500 unsigned long),
4501 void *reply_param)
4502 {
4503 u16 s1, s2;
4504
4505 QETH_CARD_TEXT(card, 4, "sendsnmp");
4506
4507 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4508 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4509 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4510 /* adjust PDU length fields in IPA_PDU_HEADER */
4511 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4512 s2 = (u32) len;
4513 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4514 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4515 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4516 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4517 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4518 reply_cb, reply_param);
4519 }
4520
4521 static int qeth_snmp_command_cb(struct qeth_card *card,
4522 struct qeth_reply *reply, unsigned long sdata)
4523 {
4524 struct qeth_ipa_cmd *cmd;
4525 struct qeth_arp_query_info *qinfo;
4526 struct qeth_snmp_cmd *snmp;
4527 unsigned char *data;
4528 __u16 data_len;
4529
4530 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4531
4532 cmd = (struct qeth_ipa_cmd *) sdata;
4533 data = (unsigned char *)((char *)cmd - reply->offset);
4534 qinfo = (struct qeth_arp_query_info *) reply->param;
4535 snmp = &cmd->data.setadapterparms.data.snmp;
4536
4537 if (cmd->hdr.return_code) {
4538 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4539 return 0;
4540 }
4541 if (cmd->data.setadapterparms.hdr.return_code) {
4542 cmd->hdr.return_code =
4543 cmd->data.setadapterparms.hdr.return_code;
4544 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4545 return 0;
4546 }
4547 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4548 if (cmd->data.setadapterparms.hdr.seq_no == 1)
4549 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4550 else
4551 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4552
4553 /* check if there is enough room in userspace */
4554 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4555 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4556 cmd->hdr.return_code = IPA_RC_ENOMEM;
4557 return 0;
4558 }
4559 QETH_CARD_TEXT_(card, 4, "snore%i",
4560 cmd->data.setadapterparms.hdr.used_total);
4561 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4562 cmd->data.setadapterparms.hdr.seq_no);
4563 /*copy entries to user buffer*/
4564 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4565 memcpy(qinfo->udata + qinfo->udata_offset,
4566 (char *)snmp,
4567 data_len + offsetof(struct qeth_snmp_cmd, data));
4568 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4569 } else {
4570 memcpy(qinfo->udata + qinfo->udata_offset,
4571 (char *)&snmp->request, data_len);
4572 }
4573 qinfo->udata_offset += data_len;
4574 /* check if all replies received ... */
4575 QETH_CARD_TEXT_(card, 4, "srtot%i",
4576 cmd->data.setadapterparms.hdr.used_total);
4577 QETH_CARD_TEXT_(card, 4, "srseq%i",
4578 cmd->data.setadapterparms.hdr.seq_no);
4579 if (cmd->data.setadapterparms.hdr.seq_no <
4580 cmd->data.setadapterparms.hdr.used_total)
4581 return 1;
4582 return 0;
4583 }
4584
4585 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4586 {
4587 struct qeth_cmd_buffer *iob;
4588 struct qeth_ipa_cmd *cmd;
4589 struct qeth_snmp_ureq *ureq;
4590 unsigned int req_len;
4591 struct qeth_arp_query_info qinfo = {0, };
4592 int rc = 0;
4593
4594 QETH_CARD_TEXT(card, 3, "snmpcmd");
4595
4596 if (card->info.guestlan)
4597 return -EOPNOTSUPP;
4598
4599 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4600 (!card->options.layer2)) {
4601 return -EOPNOTSUPP;
4602 }
4603 /* skip 4 bytes (data_len struct member) to get req_len */
4604 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4605 return -EFAULT;
4606 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4607 sizeof(struct qeth_ipacmd_hdr) -
4608 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4609 return -EINVAL;
4610 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4611 if (IS_ERR(ureq)) {
4612 QETH_CARD_TEXT(card, 2, "snmpnome");
4613 return PTR_ERR(ureq);
4614 }
4615 qinfo.udata_len = ureq->hdr.data_len;
4616 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4617 if (!qinfo.udata) {
4618 kfree(ureq);
4619 return -ENOMEM;
4620 }
4621 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4622
4623 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4624 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4625 if (!iob) {
4626 rc = -ENOMEM;
4627 goto out;
4628 }
4629 cmd = __ipa_cmd(iob);
4630 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4631 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4632 qeth_snmp_command_cb, (void *)&qinfo);
4633 if (rc)
4634 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4635 QETH_CARD_IFNAME(card), rc);
4636 else {
4637 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4638 rc = -EFAULT;
4639 }
4640 out:
4641 kfree(ureq);
4642 kfree(qinfo.udata);
4643 return rc;
4644 }
4645
4646 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4647 struct qeth_reply *reply, unsigned long data)
4648 {
4649 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4650 struct qeth_qoat_priv *priv;
4651 char *resdata;
4652 int resdatalen;
4653
4654 QETH_CARD_TEXT(card, 3, "qoatcb");
4655 if (qeth_setadpparms_inspect_rc(cmd))
4656 return 0;
4657
4658 priv = (struct qeth_qoat_priv *)reply->param;
4659 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4660 resdata = (char *)data + 28;
4661
4662 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4663 cmd->hdr.return_code = IPA_RC_FFFF;
4664 return 0;
4665 }
4666
4667 memcpy((priv->buffer + priv->response_len), resdata,
4668 resdatalen);
4669 priv->response_len += resdatalen;
4670
4671 if (cmd->data.setadapterparms.hdr.seq_no <
4672 cmd->data.setadapterparms.hdr.used_total)
4673 return 1;
4674 return 0;
4675 }
4676
4677 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4678 {
4679 int rc = 0;
4680 struct qeth_cmd_buffer *iob;
4681 struct qeth_ipa_cmd *cmd;
4682 struct qeth_query_oat *oat_req;
4683 struct qeth_query_oat_data oat_data;
4684 struct qeth_qoat_priv priv;
4685 void __user *tmp;
4686
4687 QETH_CARD_TEXT(card, 3, "qoatcmd");
4688
4689 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4690 rc = -EOPNOTSUPP;
4691 goto out;
4692 }
4693
4694 if (copy_from_user(&oat_data, udata,
4695 sizeof(struct qeth_query_oat_data))) {
4696 rc = -EFAULT;
4697 goto out;
4698 }
4699
4700 priv.buffer_len = oat_data.buffer_len;
4701 priv.response_len = 0;
4702 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL);
4703 if (!priv.buffer) {
4704 rc = -ENOMEM;
4705 goto out;
4706 }
4707
4708 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4709 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4710 sizeof(struct qeth_query_oat));
4711 if (!iob) {
4712 rc = -ENOMEM;
4713 goto out_free;
4714 }
4715 cmd = __ipa_cmd(iob);
4716 oat_req = &cmd->data.setadapterparms.data.query_oat;
4717 oat_req->subcmd_code = oat_data.command;
4718
4719 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4720 &priv);
4721 if (!rc) {
4722 if (is_compat_task())
4723 tmp = compat_ptr(oat_data.ptr);
4724 else
4725 tmp = (void __user *)(unsigned long)oat_data.ptr;
4726
4727 if (copy_to_user(tmp, priv.buffer,
4728 priv.response_len)) {
4729 rc = -EFAULT;
4730 goto out_free;
4731 }
4732
4733 oat_data.response_len = priv.response_len;
4734
4735 if (copy_to_user(udata, &oat_data,
4736 sizeof(struct qeth_query_oat_data)))
4737 rc = -EFAULT;
4738 } else
4739 if (rc == IPA_RC_FFFF)
4740 rc = -EFAULT;
4741
4742 out_free:
4743 kfree(priv.buffer);
4744 out:
4745 return rc;
4746 }
4747
4748 static int qeth_query_card_info_cb(struct qeth_card *card,
4749 struct qeth_reply *reply, unsigned long data)
4750 {
4751 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4752 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4753 struct qeth_query_card_info *card_info;
4754
4755 QETH_CARD_TEXT(card, 2, "qcrdincb");
4756 if (qeth_setadpparms_inspect_rc(cmd))
4757 return 0;
4758
4759 card_info = &cmd->data.setadapterparms.data.card_info;
4760 carrier_info->card_type = card_info->card_type;
4761 carrier_info->port_mode = card_info->port_mode;
4762 carrier_info->port_speed = card_info->port_speed;
4763 return 0;
4764 }
4765
4766 static int qeth_query_card_info(struct qeth_card *card,
4767 struct carrier_info *carrier_info)
4768 {
4769 struct qeth_cmd_buffer *iob;
4770
4771 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4772 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4773 return -EOPNOTSUPP;
4774 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4775 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4776 if (!iob)
4777 return -ENOMEM;
4778 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4779 (void *)carrier_info);
4780 }
4781
4782 /**
4783 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4784 * @card: pointer to a qeth_card
4785 *
4786 * Returns
4787 * 0, if a MAC address has been set for the card's netdevice
4788 * a return code, for various error conditions
4789 */
4790 int qeth_vm_request_mac(struct qeth_card *card)
4791 {
4792 struct diag26c_mac_resp *response;
4793 struct diag26c_mac_req *request;
4794 struct ccw_dev_id id;
4795 int rc;
4796
4797 QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4798
4799 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4800 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4801 if (!request || !response) {
4802 rc = -ENOMEM;
4803 goto out;
4804 }
4805
4806 ccw_device_get_id(CARD_DDEV(card), &id);
4807 request->resp_buf_len = sizeof(*response);
4808 request->resp_version = DIAG26C_VERSION2;
4809 request->op_code = DIAG26C_GET_MAC;
4810 request->devno = id.devno;
4811
4812 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4813 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4814 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4815 if (rc)
4816 goto out;
4817 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4818
4819 if (request->resp_buf_len < sizeof(*response) ||
4820 response->version != request->resp_version) {
4821 rc = -EIO;
4822 QETH_DBF_TEXT(SETUP, 2, "badresp");
4823 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4824 sizeof(request->resp_buf_len));
4825 } else if (!is_valid_ether_addr(response->mac)) {
4826 rc = -EINVAL;
4827 QETH_DBF_TEXT(SETUP, 2, "badmac");
4828 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4829 } else {
4830 ether_addr_copy(card->dev->dev_addr, response->mac);
4831 }
4832
4833 out:
4834 kfree(response);
4835 kfree(request);
4836 return rc;
4837 }
4838 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4839
4840 static int qeth_get_qdio_q_format(struct qeth_card *card)
4841 {
4842 if (card->info.type == QETH_CARD_TYPE_IQD)
4843 return QDIO_IQDIO_QFMT;
4844 else
4845 return QDIO_QETH_QFMT;
4846 }
4847
4848 static void qeth_determine_capabilities(struct qeth_card *card)
4849 {
4850 int rc;
4851 int length;
4852 char *prcd;
4853 struct ccw_device *ddev;
4854 int ddev_offline = 0;
4855
4856 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4857 ddev = CARD_DDEV(card);
4858 if (!ddev->online) {
4859 ddev_offline = 1;
4860 rc = ccw_device_set_online(ddev);
4861 if (rc) {
4862 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4863 goto out;
4864 }
4865 }
4866
4867 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4868 if (rc) {
4869 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4870 dev_name(&card->gdev->dev), rc);
4871 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4872 goto out_offline;
4873 }
4874 qeth_configure_unitaddr(card, prcd);
4875 if (ddev_offline)
4876 qeth_configure_blkt_default(card, prcd);
4877 kfree(prcd);
4878
4879 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4880 if (rc)
4881 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4882
4883 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4884 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4885 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4886 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4887 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4888 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4889 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4890 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4891 dev_info(&card->gdev->dev,
4892 "Completion Queueing supported\n");
4893 } else {
4894 card->options.cq = QETH_CQ_NOTAVAILABLE;
4895 }
4896
4897
4898 out_offline:
4899 if (ddev_offline == 1)
4900 ccw_device_set_offline(ddev);
4901 out:
4902 return;
4903 }
4904
4905 static void qeth_qdio_establish_cq(struct qeth_card *card,
4906 struct qdio_buffer **in_sbal_ptrs,
4907 void (**queue_start_poll)
4908 (struct ccw_device *, int,
4909 unsigned long))
4910 {
4911 int i;
4912
4913 if (card->options.cq == QETH_CQ_ENABLED) {
4914 int offset = QDIO_MAX_BUFFERS_PER_Q *
4915 (card->qdio.no_in_queues - 1);
4916 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4917 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4918 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4919 }
4920
4921 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4922 }
4923 }
4924
4925 static int qeth_qdio_establish(struct qeth_card *card)
4926 {
4927 struct qdio_initialize init_data;
4928 char *qib_param_field;
4929 struct qdio_buffer **in_sbal_ptrs;
4930 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4931 struct qdio_buffer **out_sbal_ptrs;
4932 int i, j, k;
4933 int rc = 0;
4934
4935 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4936
4937 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q,
4938 GFP_KERNEL);
4939 if (!qib_param_field) {
4940 rc = -ENOMEM;
4941 goto out_free_nothing;
4942 }
4943
4944 qeth_create_qib_param_field(card, qib_param_field);
4945 qeth_create_qib_param_field_blkt(card, qib_param_field);
4946
4947 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4948 sizeof(void *),
4949 GFP_KERNEL);
4950 if (!in_sbal_ptrs) {
4951 rc = -ENOMEM;
4952 goto out_free_qib_param;
4953 }
4954 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4955 in_sbal_ptrs[i] = (struct qdio_buffer *)
4956 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4957 }
4958
4959 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
4960 GFP_KERNEL);
4961 if (!queue_start_poll) {
4962 rc = -ENOMEM;
4963 goto out_free_in_sbals;
4964 }
4965 for (i = 0; i < card->qdio.no_in_queues; ++i)
4966 queue_start_poll[i] = qeth_qdio_start_poll;
4967
4968 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4969
4970 out_sbal_ptrs =
4971 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4972 sizeof(void *),
4973 GFP_KERNEL);
4974 if (!out_sbal_ptrs) {
4975 rc = -ENOMEM;
4976 goto out_free_queue_start_poll;
4977 }
4978 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4979 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4980 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4981 card->qdio.out_qs[i]->bufs[j]->buffer);
4982 }
4983
4984 memset(&init_data, 0, sizeof(struct qdio_initialize));
4985 init_data.cdev = CARD_DDEV(card);
4986 init_data.q_format = qeth_get_qdio_q_format(card);
4987 init_data.qib_param_field_format = 0;
4988 init_data.qib_param_field = qib_param_field;
4989 init_data.no_input_qs = card->qdio.no_in_queues;
4990 init_data.no_output_qs = card->qdio.no_out_queues;
4991 init_data.input_handler = qeth_qdio_input_handler;
4992 init_data.output_handler = qeth_qdio_output_handler;
4993 init_data.queue_start_poll_array = queue_start_poll;
4994 init_data.int_parm = (unsigned long) card;
4995 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
4996 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4997 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4998 init_data.scan_threshold =
4999 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
5000
5001 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5002 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5003 rc = qdio_allocate(&init_data);
5004 if (rc) {
5005 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5006 goto out;
5007 }
5008 rc = qdio_establish(&init_data);
5009 if (rc) {
5010 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5011 qdio_free(CARD_DDEV(card));
5012 }
5013 }
5014
5015 switch (card->options.cq) {
5016 case QETH_CQ_ENABLED:
5017 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5018 break;
5019 case QETH_CQ_DISABLED:
5020 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5021 break;
5022 default:
5023 break;
5024 }
5025 out:
5026 kfree(out_sbal_ptrs);
5027 out_free_queue_start_poll:
5028 kfree(queue_start_poll);
5029 out_free_in_sbals:
5030 kfree(in_sbal_ptrs);
5031 out_free_qib_param:
5032 kfree(qib_param_field);
5033 out_free_nothing:
5034 return rc;
5035 }
5036
5037 static void qeth_core_free_card(struct qeth_card *card)
5038 {
5039 QETH_DBF_TEXT(SETUP, 2, "freecrd");
5040 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5041 qeth_clean_channel(&card->read);
5042 qeth_clean_channel(&card->write);
5043 qeth_clean_channel(&card->data);
5044 qeth_free_qdio_buffers(card);
5045 unregister_service_level(&card->qeth_service_level);
5046 kfree(card);
5047 }
5048
5049 void qeth_trace_features(struct qeth_card *card)
5050 {
5051 QETH_CARD_TEXT(card, 2, "features");
5052 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5053 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5054 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5055 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5056 sizeof(card->info.diagass_support));
5057 }
5058 EXPORT_SYMBOL_GPL(qeth_trace_features);
5059
5060 static struct ccw_device_id qeth_ids[] = {
5061 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5062 .driver_info = QETH_CARD_TYPE_OSD},
5063 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5064 .driver_info = QETH_CARD_TYPE_IQD},
5065 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5066 .driver_info = QETH_CARD_TYPE_OSN},
5067 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5068 .driver_info = QETH_CARD_TYPE_OSM},
5069 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5070 .driver_info = QETH_CARD_TYPE_OSX},
5071 {},
5072 };
5073 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5074
5075 static struct ccw_driver qeth_ccw_driver = {
5076 .driver = {
5077 .owner = THIS_MODULE,
5078 .name = "qeth",
5079 },
5080 .ids = qeth_ids,
5081 .probe = ccwgroup_probe_ccwdev,
5082 .remove = ccwgroup_remove_ccwdev,
5083 };
5084
5085 int qeth_core_hardsetup_card(struct qeth_card *card)
5086 {
5087 int retries = 3;
5088 int rc;
5089
5090 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5091 atomic_set(&card->force_alloc_skb, 0);
5092 qeth_update_from_chp_desc(card);
5093 retry:
5094 if (retries < 3)
5095 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5096 dev_name(&card->gdev->dev));
5097 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5098 ccw_device_set_offline(CARD_DDEV(card));
5099 ccw_device_set_offline(CARD_WDEV(card));
5100 ccw_device_set_offline(CARD_RDEV(card));
5101 qdio_free(CARD_DDEV(card));
5102 rc = ccw_device_set_online(CARD_RDEV(card));
5103 if (rc)
5104 goto retriable;
5105 rc = ccw_device_set_online(CARD_WDEV(card));
5106 if (rc)
5107 goto retriable;
5108 rc = ccw_device_set_online(CARD_DDEV(card));
5109 if (rc)
5110 goto retriable;
5111 retriable:
5112 if (rc == -ERESTARTSYS) {
5113 QETH_DBF_TEXT(SETUP, 2, "break1");
5114 return rc;
5115 } else if (rc) {
5116 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5117 if (--retries < 0)
5118 goto out;
5119 else
5120 goto retry;
5121 }
5122 qeth_determine_capabilities(card);
5123 qeth_init_tokens(card);
5124 qeth_init_func_level(card);
5125 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5126 if (rc == -ERESTARTSYS) {
5127 QETH_DBF_TEXT(SETUP, 2, "break2");
5128 return rc;
5129 } else if (rc) {
5130 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5131 if (--retries < 0)
5132 goto out;
5133 else
5134 goto retry;
5135 }
5136 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5137 if (rc == -ERESTARTSYS) {
5138 QETH_DBF_TEXT(SETUP, 2, "break3");
5139 return rc;
5140 } else if (rc) {
5141 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5142 if (--retries < 0)
5143 goto out;
5144 else
5145 goto retry;
5146 }
5147 card->read_or_write_problem = 0;
5148 rc = qeth_mpc_initialize(card);
5149 if (rc) {
5150 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5151 goto out;
5152 }
5153
5154 rc = qeth_send_startlan(card);
5155 if (rc) {
5156 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5157 if (rc == IPA_RC_LAN_OFFLINE) {
5158 dev_warn(&card->gdev->dev,
5159 "The LAN is offline\n");
5160 card->lan_online = 0;
5161 } else {
5162 rc = -ENODEV;
5163 goto out;
5164 }
5165 } else
5166 card->lan_online = 1;
5167
5168 card->options.ipa4.supported_funcs = 0;
5169 card->options.ipa6.supported_funcs = 0;
5170 card->options.adp.supported_funcs = 0;
5171 card->options.sbp.supported_funcs = 0;
5172 card->info.diagass_support = 0;
5173 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5174 if (rc == -ENOMEM)
5175 goto out;
5176 if (qeth_is_supported(card, IPA_IPV6)) {
5177 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5178 if (rc == -ENOMEM)
5179 goto out;
5180 }
5181 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5182 rc = qeth_query_setadapterparms(card);
5183 if (rc < 0) {
5184 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5185 goto out;
5186 }
5187 }
5188 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5189 rc = qeth_query_setdiagass(card);
5190 if (rc < 0) {
5191 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5192 goto out;
5193 }
5194 }
5195 return 0;
5196 out:
5197 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5198 "an error on the device\n");
5199 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5200 dev_name(&card->gdev->dev), rc);
5201 return rc;
5202 }
5203 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5204
5205 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5206 struct sk_buff *skb, int offset, int data_len)
5207 {
5208 struct page *page = virt_to_page(element->addr);
5209 unsigned int next_frag;
5210
5211 /* first fill the linear space */
5212 if (!skb->len) {
5213 unsigned int linear = min(data_len, skb_tailroom(skb));
5214
5215 skb_put_data(skb, element->addr + offset, linear);
5216 data_len -= linear;
5217 if (!data_len)
5218 return;
5219 offset += linear;
5220 /* fall through to add page frag for remaining data */
5221 }
5222
5223 next_frag = skb_shinfo(skb)->nr_frags;
5224 get_page(page);
5225 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5226 }
5227
5228 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5229 {
5230 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5231 }
5232
5233 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5234 struct qeth_qdio_buffer *qethbuffer,
5235 struct qdio_buffer_element **__element, int *__offset,
5236 struct qeth_hdr **hdr)
5237 {
5238 struct qdio_buffer_element *element = *__element;
5239 struct qdio_buffer *buffer = qethbuffer->buffer;
5240 int offset = *__offset;
5241 struct sk_buff *skb;
5242 int skb_len = 0;
5243 void *data_ptr;
5244 int data_len;
5245 int headroom = 0;
5246 int use_rx_sg = 0;
5247
5248 /* qeth_hdr must not cross element boundaries */
5249 while (element->length < offset + sizeof(struct qeth_hdr)) {
5250 if (qeth_is_last_sbale(element))
5251 return NULL;
5252 element++;
5253 offset = 0;
5254 }
5255 *hdr = element->addr + offset;
5256
5257 offset += sizeof(struct qeth_hdr);
5258 switch ((*hdr)->hdr.l2.id) {
5259 case QETH_HEADER_TYPE_LAYER2:
5260 skb_len = (*hdr)->hdr.l2.pkt_length;
5261 break;
5262 case QETH_HEADER_TYPE_LAYER3:
5263 skb_len = (*hdr)->hdr.l3.length;
5264 headroom = ETH_HLEN;
5265 break;
5266 case QETH_HEADER_TYPE_OSN:
5267 skb_len = (*hdr)->hdr.osn.pdu_length;
5268 headroom = sizeof(struct qeth_hdr);
5269 break;
5270 default:
5271 break;
5272 }
5273
5274 if (!skb_len)
5275 return NULL;
5276
5277 if (((skb_len >= card->options.rx_sg_cb) &&
5278 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5279 (!atomic_read(&card->force_alloc_skb))) ||
5280 (card->options.cq == QETH_CQ_ENABLED))
5281 use_rx_sg = 1;
5282
5283 if (use_rx_sg && qethbuffer->rx_skb) {
5284 /* QETH_CQ_ENABLED only: */
5285 skb = qethbuffer->rx_skb;
5286 qethbuffer->rx_skb = NULL;
5287 } else {
5288 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5289
5290 skb = napi_alloc_skb(&card->napi, linear + headroom);
5291 }
5292 if (!skb)
5293 goto no_mem;
5294 if (headroom)
5295 skb_reserve(skb, headroom);
5296
5297 data_ptr = element->addr + offset;
5298 while (skb_len) {
5299 data_len = min(skb_len, (int)(element->length - offset));
5300 if (data_len) {
5301 if (use_rx_sg)
5302 qeth_create_skb_frag(element, skb, offset,
5303 data_len);
5304 else
5305 skb_put_data(skb, data_ptr, data_len);
5306 }
5307 skb_len -= data_len;
5308 if (skb_len) {
5309 if (qeth_is_last_sbale(element)) {
5310 QETH_CARD_TEXT(card, 4, "unexeob");
5311 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5312 dev_kfree_skb_any(skb);
5313 card->stats.rx_errors++;
5314 return NULL;
5315 }
5316 element++;
5317 offset = 0;
5318 data_ptr = element->addr;
5319 } else {
5320 offset += data_len;
5321 }
5322 }
5323 *__element = element;
5324 *__offset = offset;
5325 if (use_rx_sg && card->options.performance_stats) {
5326 card->perf_stats.sg_skbs_rx++;
5327 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5328 }
5329 return skb;
5330 no_mem:
5331 if (net_ratelimit()) {
5332 QETH_CARD_TEXT(card, 2, "noskbmem");
5333 }
5334 card->stats.rx_dropped++;
5335 return NULL;
5336 }
5337 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5338
5339 int qeth_poll(struct napi_struct *napi, int budget)
5340 {
5341 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5342 int work_done = 0;
5343 struct qeth_qdio_buffer *buffer;
5344 int done;
5345 int new_budget = budget;
5346
5347 if (card->options.performance_stats) {
5348 card->perf_stats.inbound_cnt++;
5349 card->perf_stats.inbound_start_time = qeth_get_micros();
5350 }
5351
5352 while (1) {
5353 if (!card->rx.b_count) {
5354 card->rx.qdio_err = 0;
5355 card->rx.b_count = qdio_get_next_buffers(
5356 card->data.ccwdev, 0, &card->rx.b_index,
5357 &card->rx.qdio_err);
5358 if (card->rx.b_count <= 0) {
5359 card->rx.b_count = 0;
5360 break;
5361 }
5362 card->rx.b_element =
5363 &card->qdio.in_q->bufs[card->rx.b_index]
5364 .buffer->element[0];
5365 card->rx.e_offset = 0;
5366 }
5367
5368 while (card->rx.b_count) {
5369 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5370 if (!(card->rx.qdio_err &&
5371 qeth_check_qdio_errors(card, buffer->buffer,
5372 card->rx.qdio_err, "qinerr")))
5373 work_done +=
5374 card->discipline->process_rx_buffer(
5375 card, new_budget, &done);
5376 else
5377 done = 1;
5378
5379 if (done) {
5380 if (card->options.performance_stats)
5381 card->perf_stats.bufs_rec++;
5382 qeth_put_buffer_pool_entry(card,
5383 buffer->pool_entry);
5384 qeth_queue_input_buffer(card, card->rx.b_index);
5385 card->rx.b_count--;
5386 if (card->rx.b_count) {
5387 card->rx.b_index =
5388 (card->rx.b_index + 1) %
5389 QDIO_MAX_BUFFERS_PER_Q;
5390 card->rx.b_element =
5391 &card->qdio.in_q
5392 ->bufs[card->rx.b_index]
5393 .buffer->element[0];
5394 card->rx.e_offset = 0;
5395 }
5396 }
5397
5398 if (work_done >= budget)
5399 goto out;
5400 else
5401 new_budget = budget - work_done;
5402 }
5403 }
5404
5405 napi_complete_done(napi, work_done);
5406 if (qdio_start_irq(card->data.ccwdev, 0))
5407 napi_schedule(&card->napi);
5408 out:
5409 if (card->options.performance_stats)
5410 card->perf_stats.inbound_time += qeth_get_micros() -
5411 card->perf_stats.inbound_start_time;
5412 return work_done;
5413 }
5414 EXPORT_SYMBOL_GPL(qeth_poll);
5415
5416 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5417 {
5418 if (!cmd->hdr.return_code)
5419 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5420 return cmd->hdr.return_code;
5421 }
5422
5423 int qeth_setassparms_cb(struct qeth_card *card,
5424 struct qeth_reply *reply, unsigned long data)
5425 {
5426 struct qeth_ipa_cmd *cmd;
5427
5428 QETH_CARD_TEXT(card, 4, "defadpcb");
5429
5430 cmd = (struct qeth_ipa_cmd *) data;
5431 if (cmd->hdr.return_code == 0) {
5432 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5433 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5434 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5435 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5436 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5437 }
5438 return 0;
5439 }
5440 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5441
5442 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5443 enum qeth_ipa_funcs ipa_func,
5444 __u16 cmd_code, __u16 len,
5445 enum qeth_prot_versions prot)
5446 {
5447 struct qeth_cmd_buffer *iob;
5448 struct qeth_ipa_cmd *cmd;
5449
5450 QETH_CARD_TEXT(card, 4, "getasscm");
5451 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5452
5453 if (iob) {
5454 cmd = __ipa_cmd(iob);
5455 cmd->data.setassparms.hdr.assist_no = ipa_func;
5456 cmd->data.setassparms.hdr.length = 8 + len;
5457 cmd->data.setassparms.hdr.command_code = cmd_code;
5458 cmd->data.setassparms.hdr.return_code = 0;
5459 cmd->data.setassparms.hdr.seq_no = 0;
5460 }
5461
5462 return iob;
5463 }
5464 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5465
5466 int qeth_send_setassparms(struct qeth_card *card,
5467 struct qeth_cmd_buffer *iob, __u16 len, long data,
5468 int (*reply_cb)(struct qeth_card *,
5469 struct qeth_reply *, unsigned long),
5470 void *reply_param)
5471 {
5472 int rc;
5473 struct qeth_ipa_cmd *cmd;
5474
5475 QETH_CARD_TEXT(card, 4, "sendassp");
5476
5477 cmd = __ipa_cmd(iob);
5478 if (len <= sizeof(__u32))
5479 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5480 else /* (len > sizeof(__u32)) */
5481 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5482
5483 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5484 return rc;
5485 }
5486 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5487
5488 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5489 enum qeth_ipa_funcs ipa_func,
5490 u16 cmd_code, long data,
5491 enum qeth_prot_versions prot)
5492 {
5493 int rc;
5494 int length = 0;
5495 struct qeth_cmd_buffer *iob;
5496
5497 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
5498 if (data)
5499 length = sizeof(__u32);
5500 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
5501 if (!iob)
5502 return -ENOMEM;
5503 rc = qeth_send_setassparms(card, iob, length, data,
5504 qeth_setassparms_cb, NULL);
5505 return rc;
5506 }
5507 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
5508
5509 static void qeth_unregister_dbf_views(void)
5510 {
5511 int x;
5512 for (x = 0; x < QETH_DBF_INFOS; x++) {
5513 debug_unregister(qeth_dbf[x].id);
5514 qeth_dbf[x].id = NULL;
5515 }
5516 }
5517
5518 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5519 {
5520 char dbf_txt_buf[32];
5521 va_list args;
5522
5523 if (!debug_level_enabled(id, level))
5524 return;
5525 va_start(args, fmt);
5526 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5527 va_end(args);
5528 debug_text_event(id, level, dbf_txt_buf);
5529 }
5530 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5531
5532 static int qeth_register_dbf_views(void)
5533 {
5534 int ret;
5535 int x;
5536
5537 for (x = 0; x < QETH_DBF_INFOS; x++) {
5538 /* register the areas */
5539 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5540 qeth_dbf[x].pages,
5541 qeth_dbf[x].areas,
5542 qeth_dbf[x].len);
5543 if (qeth_dbf[x].id == NULL) {
5544 qeth_unregister_dbf_views();
5545 return -ENOMEM;
5546 }
5547
5548 /* register a view */
5549 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5550 if (ret) {
5551 qeth_unregister_dbf_views();
5552 return ret;
5553 }
5554
5555 /* set a passing level */
5556 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5557 }
5558
5559 return 0;
5560 }
5561
5562 int qeth_core_load_discipline(struct qeth_card *card,
5563 enum qeth_discipline_id discipline)
5564 {
5565 int rc = 0;
5566
5567 mutex_lock(&qeth_mod_mutex);
5568 switch (discipline) {
5569 case QETH_DISCIPLINE_LAYER3:
5570 card->discipline = try_then_request_module(
5571 symbol_get(qeth_l3_discipline), "qeth_l3");
5572 break;
5573 case QETH_DISCIPLINE_LAYER2:
5574 card->discipline = try_then_request_module(
5575 symbol_get(qeth_l2_discipline), "qeth_l2");
5576 break;
5577 default:
5578 break;
5579 }
5580
5581 if (!card->discipline) {
5582 dev_err(&card->gdev->dev, "There is no kernel module to "
5583 "support discipline %d\n", discipline);
5584 rc = -EINVAL;
5585 }
5586 mutex_unlock(&qeth_mod_mutex);
5587 return rc;
5588 }
5589
5590 void qeth_core_free_discipline(struct qeth_card *card)
5591 {
5592 if (card->options.layer2)
5593 symbol_put(qeth_l2_discipline);
5594 else
5595 symbol_put(qeth_l3_discipline);
5596 card->discipline = NULL;
5597 }
5598
5599 const struct device_type qeth_generic_devtype = {
5600 .name = "qeth_generic",
5601 .groups = qeth_generic_attr_groups,
5602 };
5603 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5604
5605 static const struct device_type qeth_osn_devtype = {
5606 .name = "qeth_osn",
5607 .groups = qeth_osn_attr_groups,
5608 };
5609
5610 #define DBF_NAME_LEN 20
5611
5612 struct qeth_dbf_entry {
5613 char dbf_name[DBF_NAME_LEN];
5614 debug_info_t *dbf_info;
5615 struct list_head dbf_list;
5616 };
5617
5618 static LIST_HEAD(qeth_dbf_list);
5619 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5620
5621 static debug_info_t *qeth_get_dbf_entry(char *name)
5622 {
5623 struct qeth_dbf_entry *entry;
5624 debug_info_t *rc = NULL;
5625
5626 mutex_lock(&qeth_dbf_list_mutex);
5627 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5628 if (strcmp(entry->dbf_name, name) == 0) {
5629 rc = entry->dbf_info;
5630 break;
5631 }
5632 }
5633 mutex_unlock(&qeth_dbf_list_mutex);
5634 return rc;
5635 }
5636
5637 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5638 {
5639 struct qeth_dbf_entry *new_entry;
5640
5641 card->debug = debug_register(name, 2, 1, 8);
5642 if (!card->debug) {
5643 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5644 goto err;
5645 }
5646 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5647 goto err_dbg;
5648 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5649 if (!new_entry)
5650 goto err_dbg;
5651 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5652 new_entry->dbf_info = card->debug;
5653 mutex_lock(&qeth_dbf_list_mutex);
5654 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5655 mutex_unlock(&qeth_dbf_list_mutex);
5656
5657 return 0;
5658
5659 err_dbg:
5660 debug_unregister(card->debug);
5661 err:
5662 return -ENOMEM;
5663 }
5664
5665 static void qeth_clear_dbf_list(void)
5666 {
5667 struct qeth_dbf_entry *entry, *tmp;
5668
5669 mutex_lock(&qeth_dbf_list_mutex);
5670 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5671 list_del(&entry->dbf_list);
5672 debug_unregister(entry->dbf_info);
5673 kfree(entry);
5674 }
5675 mutex_unlock(&qeth_dbf_list_mutex);
5676 }
5677
5678 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5679 {
5680 struct net_device *dev;
5681
5682 switch (card->info.type) {
5683 case QETH_CARD_TYPE_IQD:
5684 dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, ether_setup);
5685 break;
5686 case QETH_CARD_TYPE_OSN:
5687 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5688 break;
5689 default:
5690 dev = alloc_etherdev(0);
5691 }
5692
5693 if (!dev)
5694 return NULL;
5695
5696 dev->ml_priv = card;
5697 dev->watchdog_timeo = QETH_TX_TIMEOUT;
5698 dev->min_mtu = IS_OSN(card) ? 64 : 576;
5699 /* initialized when device first goes online: */
5700 dev->max_mtu = 0;
5701 dev->mtu = 0;
5702 SET_NETDEV_DEV(dev, &card->gdev->dev);
5703 netif_carrier_off(dev);
5704
5705 if (!IS_OSN(card)) {
5706 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5707 dev->hw_features |= NETIF_F_SG;
5708 dev->vlan_features |= NETIF_F_SG;
5709 if (IS_IQD(card))
5710 dev->features |= NETIF_F_SG;
5711 }
5712
5713 return dev;
5714 }
5715
5716 struct net_device *qeth_clone_netdev(struct net_device *orig)
5717 {
5718 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5719
5720 if (!clone)
5721 return NULL;
5722
5723 clone->dev_port = orig->dev_port;
5724 return clone;
5725 }
5726
5727 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5728 {
5729 struct qeth_card *card;
5730 struct device *dev;
5731 int rc;
5732 enum qeth_discipline_id enforced_disc;
5733 unsigned long flags;
5734 char dbf_name[DBF_NAME_LEN];
5735
5736 QETH_DBF_TEXT(SETUP, 2, "probedev");
5737
5738 dev = &gdev->dev;
5739 if (!get_device(dev))
5740 return -ENODEV;
5741
5742 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5743
5744 card = qeth_alloc_card();
5745 if (!card) {
5746 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5747 rc = -ENOMEM;
5748 goto err_dev;
5749 }
5750
5751 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5752 dev_name(&gdev->dev));
5753 card->debug = qeth_get_dbf_entry(dbf_name);
5754 if (!card->debug) {
5755 rc = qeth_add_dbf_entry(card, dbf_name);
5756 if (rc)
5757 goto err_card;
5758 }
5759
5760 card->read.ccwdev = gdev->cdev[0];
5761 card->write.ccwdev = gdev->cdev[1];
5762 card->data.ccwdev = gdev->cdev[2];
5763 dev_set_drvdata(&gdev->dev, card);
5764 card->gdev = gdev;
5765 gdev->cdev[0]->handler = qeth_irq;
5766 gdev->cdev[1]->handler = qeth_irq;
5767 gdev->cdev[2]->handler = qeth_irq;
5768
5769 qeth_setup_card(card);
5770 qeth_update_from_chp_desc(card);
5771
5772 card->dev = qeth_alloc_netdev(card);
5773 if (!card->dev) {
5774 rc = -ENOMEM;
5775 goto err_card;
5776 }
5777
5778 qeth_determine_capabilities(card);
5779 enforced_disc = qeth_enforce_discipline(card);
5780 switch (enforced_disc) {
5781 case QETH_DISCIPLINE_UNDETERMINED:
5782 gdev->dev.type = &qeth_generic_devtype;
5783 break;
5784 default:
5785 card->info.layer_enforced = true;
5786 rc = qeth_core_load_discipline(card, enforced_disc);
5787 if (rc)
5788 goto err_load;
5789
5790 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5791 ? card->discipline->devtype
5792 : &qeth_osn_devtype;
5793 rc = card->discipline->setup(card->gdev);
5794 if (rc)
5795 goto err_disc;
5796 break;
5797 }
5798
5799 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5800 list_add_tail(&card->list, &qeth_core_card_list.list);
5801 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5802 return 0;
5803
5804 err_disc:
5805 qeth_core_free_discipline(card);
5806 err_load:
5807 free_netdev(card->dev);
5808 err_card:
5809 qeth_core_free_card(card);
5810 err_dev:
5811 put_device(dev);
5812 return rc;
5813 }
5814
5815 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5816 {
5817 unsigned long flags;
5818 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5819
5820 QETH_DBF_TEXT(SETUP, 2, "removedv");
5821
5822 if (card->discipline) {
5823 card->discipline->remove(gdev);
5824 qeth_core_free_discipline(card);
5825 }
5826
5827 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5828 list_del(&card->list);
5829 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5830 free_netdev(card->dev);
5831 qeth_core_free_card(card);
5832 dev_set_drvdata(&gdev->dev, NULL);
5833 put_device(&gdev->dev);
5834 }
5835
5836 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5837 {
5838 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5839 int rc = 0;
5840 enum qeth_discipline_id def_discipline;
5841
5842 if (!card->discipline) {
5843 if (card->info.type == QETH_CARD_TYPE_IQD)
5844 def_discipline = QETH_DISCIPLINE_LAYER3;
5845 else
5846 def_discipline = QETH_DISCIPLINE_LAYER2;
5847 rc = qeth_core_load_discipline(card, def_discipline);
5848 if (rc)
5849 goto err;
5850 rc = card->discipline->setup(card->gdev);
5851 if (rc) {
5852 qeth_core_free_discipline(card);
5853 goto err;
5854 }
5855 }
5856 rc = card->discipline->set_online(gdev);
5857 err:
5858 return rc;
5859 }
5860
5861 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5862 {
5863 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5864 return card->discipline->set_offline(gdev);
5865 }
5866
5867 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5868 {
5869 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5870 qeth_set_allowed_threads(card, 0, 1);
5871 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5872 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5873 qeth_qdio_clear_card(card, 0);
5874 qeth_clear_qdio_buffers(card);
5875 qdio_free(CARD_DDEV(card));
5876 }
5877
5878 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5879 {
5880 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5881 if (card->discipline && card->discipline->freeze)
5882 return card->discipline->freeze(gdev);
5883 return 0;
5884 }
5885
5886 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5887 {
5888 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5889 if (card->discipline && card->discipline->thaw)
5890 return card->discipline->thaw(gdev);
5891 return 0;
5892 }
5893
5894 static int qeth_core_restore(struct ccwgroup_device *gdev)
5895 {
5896 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5897 if (card->discipline && card->discipline->restore)
5898 return card->discipline->restore(gdev);
5899 return 0;
5900 }
5901
5902 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5903 size_t count)
5904 {
5905 int err;
5906
5907 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
5908 buf);
5909
5910 return err ? err : count;
5911 }
5912 static DRIVER_ATTR_WO(group);
5913
5914 static struct attribute *qeth_drv_attrs[] = {
5915 &driver_attr_group.attr,
5916 NULL,
5917 };
5918 static struct attribute_group qeth_drv_attr_group = {
5919 .attrs = qeth_drv_attrs,
5920 };
5921 static const struct attribute_group *qeth_drv_attr_groups[] = {
5922 &qeth_drv_attr_group,
5923 NULL,
5924 };
5925
5926 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5927 .driver = {
5928 .groups = qeth_drv_attr_groups,
5929 .owner = THIS_MODULE,
5930 .name = "qeth",
5931 },
5932 .ccw_driver = &qeth_ccw_driver,
5933 .setup = qeth_core_probe_device,
5934 .remove = qeth_core_remove_device,
5935 .set_online = qeth_core_set_online,
5936 .set_offline = qeth_core_set_offline,
5937 .shutdown = qeth_core_shutdown,
5938 .prepare = NULL,
5939 .complete = NULL,
5940 .freeze = qeth_core_freeze,
5941 .thaw = qeth_core_thaw,
5942 .restore = qeth_core_restore,
5943 };
5944
5945 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5946 {
5947 struct qeth_card *card = dev->ml_priv;
5948 struct mii_ioctl_data *mii_data;
5949 int rc = 0;
5950
5951 if (!card)
5952 return -ENODEV;
5953
5954 if (!qeth_card_hw_is_reachable(card))
5955 return -ENODEV;
5956
5957 if (card->info.type == QETH_CARD_TYPE_OSN)
5958 return -EPERM;
5959
5960 switch (cmd) {
5961 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5962 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5963 break;
5964 case SIOC_QETH_GET_CARD_TYPE:
5965 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5966 card->info.type == QETH_CARD_TYPE_OSM ||
5967 card->info.type == QETH_CARD_TYPE_OSX) &&
5968 !card->info.guestlan)
5969 return 1;
5970 else
5971 return 0;
5972 case SIOCGMIIPHY:
5973 mii_data = if_mii(rq);
5974 mii_data->phy_id = 0;
5975 break;
5976 case SIOCGMIIREG:
5977 mii_data = if_mii(rq);
5978 if (mii_data->phy_id != 0)
5979 rc = -EINVAL;
5980 else
5981 mii_data->val_out = qeth_mdio_read(dev,
5982 mii_data->phy_id, mii_data->reg_num);
5983 break;
5984 case SIOC_QETH_QUERY_OAT:
5985 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5986 break;
5987 default:
5988 if (card->discipline->do_ioctl)
5989 rc = card->discipline->do_ioctl(dev, rq, cmd);
5990 else
5991 rc = -EOPNOTSUPP;
5992 }
5993 if (rc)
5994 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5995 return rc;
5996 }
5997 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5998
5999 static struct {
6000 const char str[ETH_GSTRING_LEN];
6001 } qeth_ethtool_stats_keys[] = {
6002 /* 0 */{"rx skbs"},
6003 {"rx buffers"},
6004 {"tx skbs"},
6005 {"tx buffers"},
6006 {"tx skbs no packing"},
6007 {"tx buffers no packing"},
6008 {"tx skbs packing"},
6009 {"tx buffers packing"},
6010 {"tx sg skbs"},
6011 {"tx buffer elements"},
6012 /* 10 */{"rx sg skbs"},
6013 {"rx sg frags"},
6014 {"rx sg page allocs"},
6015 {"tx large kbytes"},
6016 {"tx large count"},
6017 {"tx pk state ch n->p"},
6018 {"tx pk state ch p->n"},
6019 {"tx pk watermark low"},
6020 {"tx pk watermark high"},
6021 {"queue 0 buffer usage"},
6022 /* 20 */{"queue 1 buffer usage"},
6023 {"queue 2 buffer usage"},
6024 {"queue 3 buffer usage"},
6025 {"rx poll time"},
6026 {"rx poll count"},
6027 {"rx do_QDIO time"},
6028 {"rx do_QDIO count"},
6029 {"tx handler time"},
6030 {"tx handler count"},
6031 {"tx time"},
6032 /* 30 */{"tx count"},
6033 {"tx do_QDIO time"},
6034 {"tx do_QDIO count"},
6035 {"tx csum"},
6036 {"tx lin"},
6037 {"tx linfail"},
6038 {"cq handler count"},
6039 {"cq handler time"},
6040 {"rx csum"}
6041 };
6042
6043 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
6044 {
6045 switch (stringset) {
6046 case ETH_SS_STATS:
6047 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
6048 default:
6049 return -EINVAL;
6050 }
6051 }
6052 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
6053
6054 void qeth_core_get_ethtool_stats(struct net_device *dev,
6055 struct ethtool_stats *stats, u64 *data)
6056 {
6057 struct qeth_card *card = dev->ml_priv;
6058 data[0] = card->stats.rx_packets -
6059 card->perf_stats.initial_rx_packets;
6060 data[1] = card->perf_stats.bufs_rec;
6061 data[2] = card->stats.tx_packets -
6062 card->perf_stats.initial_tx_packets;
6063 data[3] = card->perf_stats.bufs_sent;
6064 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
6065 - card->perf_stats.skbs_sent_pack;
6066 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
6067 data[6] = card->perf_stats.skbs_sent_pack;
6068 data[7] = card->perf_stats.bufs_sent_pack;
6069 data[8] = card->perf_stats.sg_skbs_sent;
6070 data[9] = card->perf_stats.buf_elements_sent;
6071 data[10] = card->perf_stats.sg_skbs_rx;
6072 data[11] = card->perf_stats.sg_frags_rx;
6073 data[12] = card->perf_stats.sg_alloc_page_rx;
6074 data[13] = (card->perf_stats.large_send_bytes >> 10);
6075 data[14] = card->perf_stats.large_send_cnt;
6076 data[15] = card->perf_stats.sc_dp_p;
6077 data[16] = card->perf_stats.sc_p_dp;
6078 data[17] = QETH_LOW_WATERMARK_PACK;
6079 data[18] = QETH_HIGH_WATERMARK_PACK;
6080 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
6081 data[20] = (card->qdio.no_out_queues > 1) ?
6082 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
6083 data[21] = (card->qdio.no_out_queues > 2) ?
6084 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
6085 data[22] = (card->qdio.no_out_queues > 3) ?
6086 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
6087 data[23] = card->perf_stats.inbound_time;
6088 data[24] = card->perf_stats.inbound_cnt;
6089 data[25] = card->perf_stats.inbound_do_qdio_time;
6090 data[26] = card->perf_stats.inbound_do_qdio_cnt;
6091 data[27] = card->perf_stats.outbound_handler_time;
6092 data[28] = card->perf_stats.outbound_handler_cnt;
6093 data[29] = card->perf_stats.outbound_time;
6094 data[30] = card->perf_stats.outbound_cnt;
6095 data[31] = card->perf_stats.outbound_do_qdio_time;
6096 data[32] = card->perf_stats.outbound_do_qdio_cnt;
6097 data[33] = card->perf_stats.tx_csum;
6098 data[34] = card->perf_stats.tx_lin;
6099 data[35] = card->perf_stats.tx_linfail;
6100 data[36] = card->perf_stats.cq_cnt;
6101 data[37] = card->perf_stats.cq_time;
6102 data[38] = card->perf_stats.rx_csum;
6103 }
6104 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6105
6106 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6107 {
6108 switch (stringset) {
6109 case ETH_SS_STATS:
6110 memcpy(data, &qeth_ethtool_stats_keys,
6111 sizeof(qeth_ethtool_stats_keys));
6112 break;
6113 default:
6114 WARN_ON(1);
6115 break;
6116 }
6117 }
6118 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6119
6120 void qeth_core_get_drvinfo(struct net_device *dev,
6121 struct ethtool_drvinfo *info)
6122 {
6123 struct qeth_card *card = dev->ml_priv;
6124
6125 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
6126 sizeof(info->driver));
6127 strlcpy(info->version, "1.0", sizeof(info->version));
6128 strlcpy(info->fw_version, card->info.mcl_level,
6129 sizeof(info->fw_version));
6130 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6131 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6132 }
6133 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6134
6135 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6136 /* Autoneg and full-duplex are supported and advertised unconditionally. */
6137 /* Always advertise and support all speeds up to specified, and only one */
6138 /* specified port type. */
6139 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6140 int maxspeed, int porttype)
6141 {
6142 ethtool_link_ksettings_zero_link_mode(cmd, supported);
6143 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6144 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6145
6146 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6147 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6148
6149 switch (porttype) {
6150 case PORT_TP:
6151 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6152 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6153 break;
6154 case PORT_FIBRE:
6155 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6156 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6157 break;
6158 default:
6159 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6160 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6161 WARN_ON_ONCE(1);
6162 }
6163
6164 /* fallthrough from high to low, to select all legal speeds: */
6165 switch (maxspeed) {
6166 case SPEED_10000:
6167 ethtool_link_ksettings_add_link_mode(cmd, supported,
6168 10000baseT_Full);
6169 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6170 10000baseT_Full);
6171 case SPEED_1000:
6172 ethtool_link_ksettings_add_link_mode(cmd, supported,
6173 1000baseT_Full);
6174 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6175 1000baseT_Full);
6176 ethtool_link_ksettings_add_link_mode(cmd, supported,
6177 1000baseT_Half);
6178 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6179 1000baseT_Half);
6180 case SPEED_100:
6181 ethtool_link_ksettings_add_link_mode(cmd, supported,
6182 100baseT_Full);
6183 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6184 100baseT_Full);
6185 ethtool_link_ksettings_add_link_mode(cmd, supported,
6186 100baseT_Half);
6187 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6188 100baseT_Half);
6189 case SPEED_10:
6190 ethtool_link_ksettings_add_link_mode(cmd, supported,
6191 10baseT_Full);
6192 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6193 10baseT_Full);
6194 ethtool_link_ksettings_add_link_mode(cmd, supported,
6195 10baseT_Half);
6196 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6197 10baseT_Half);
6198 /* end fallthrough */
6199 break;
6200 default:
6201 ethtool_link_ksettings_add_link_mode(cmd, supported,
6202 10baseT_Full);
6203 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6204 10baseT_Full);
6205 ethtool_link_ksettings_add_link_mode(cmd, supported,
6206 10baseT_Half);
6207 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6208 10baseT_Half);
6209 WARN_ON_ONCE(1);
6210 }
6211 }
6212
6213 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6214 struct ethtool_link_ksettings *cmd)
6215 {
6216 struct qeth_card *card = netdev->ml_priv;
6217 enum qeth_link_types link_type;
6218 struct carrier_info carrier_info;
6219 int rc;
6220
6221 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6222 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6223 else
6224 link_type = card->info.link_type;
6225
6226 cmd->base.duplex = DUPLEX_FULL;
6227 cmd->base.autoneg = AUTONEG_ENABLE;
6228 cmd->base.phy_address = 0;
6229 cmd->base.mdio_support = 0;
6230 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6231 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6232
6233 switch (link_type) {
6234 case QETH_LINK_TYPE_FAST_ETH:
6235 case QETH_LINK_TYPE_LANE_ETH100:
6236 cmd->base.speed = SPEED_100;
6237 cmd->base.port = PORT_TP;
6238 break;
6239 case QETH_LINK_TYPE_GBIT_ETH:
6240 case QETH_LINK_TYPE_LANE_ETH1000:
6241 cmd->base.speed = SPEED_1000;
6242 cmd->base.port = PORT_FIBRE;
6243 break;
6244 case QETH_LINK_TYPE_10GBIT_ETH:
6245 cmd->base.speed = SPEED_10000;
6246 cmd->base.port = PORT_FIBRE;
6247 break;
6248 default:
6249 cmd->base.speed = SPEED_10;
6250 cmd->base.port = PORT_TP;
6251 }
6252 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6253
6254 /* Check if we can obtain more accurate information. */
6255 /* If QUERY_CARD_INFO command is not supported or fails, */
6256 /* just return the heuristics that was filled above. */
6257 if (!qeth_card_hw_is_reachable(card))
6258 return -ENODEV;
6259 rc = qeth_query_card_info(card, &carrier_info);
6260 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6261 return 0;
6262 if (rc) /* report error from the hardware operation */
6263 return rc;
6264 /* on success, fill in the information got from the hardware */
6265
6266 netdev_dbg(netdev,
6267 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6268 carrier_info.card_type,
6269 carrier_info.port_mode,
6270 carrier_info.port_speed);
6271
6272 /* Update attributes for which we've obtained more authoritative */
6273 /* information, leave the rest the way they where filled above. */
6274 switch (carrier_info.card_type) {
6275 case CARD_INFO_TYPE_1G_COPPER_A:
6276 case CARD_INFO_TYPE_1G_COPPER_B:
6277 cmd->base.port = PORT_TP;
6278 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6279 break;
6280 case CARD_INFO_TYPE_1G_FIBRE_A:
6281 case CARD_INFO_TYPE_1G_FIBRE_B:
6282 cmd->base.port = PORT_FIBRE;
6283 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6284 break;
6285 case CARD_INFO_TYPE_10G_FIBRE_A:
6286 case CARD_INFO_TYPE_10G_FIBRE_B:
6287 cmd->base.port = PORT_FIBRE;
6288 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6289 break;
6290 }
6291
6292 switch (carrier_info.port_mode) {
6293 case CARD_INFO_PORTM_FULLDUPLEX:
6294 cmd->base.duplex = DUPLEX_FULL;
6295 break;
6296 case CARD_INFO_PORTM_HALFDUPLEX:
6297 cmd->base.duplex = DUPLEX_HALF;
6298 break;
6299 }
6300
6301 switch (carrier_info.port_speed) {
6302 case CARD_INFO_PORTS_10M:
6303 cmd->base.speed = SPEED_10;
6304 break;
6305 case CARD_INFO_PORTS_100M:
6306 cmd->base.speed = SPEED_100;
6307 break;
6308 case CARD_INFO_PORTS_1G:
6309 cmd->base.speed = SPEED_1000;
6310 break;
6311 case CARD_INFO_PORTS_10G:
6312 cmd->base.speed = SPEED_10000;
6313 break;
6314 }
6315
6316 return 0;
6317 }
6318 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6319
6320 /* Callback to handle checksum offload command reply from OSA card.
6321 * Verify that required features have been enabled on the card.
6322 * Return error in hdr->return_code as this value is checked by caller.
6323 *
6324 * Always returns zero to indicate no further messages from the OSA card.
6325 */
6326 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6327 struct qeth_reply *reply,
6328 unsigned long data)
6329 {
6330 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6331 struct qeth_checksum_cmd *chksum_cb =
6332 (struct qeth_checksum_cmd *)reply->param;
6333
6334 QETH_CARD_TEXT(card, 4, "chkdoccb");
6335 if (qeth_setassparms_inspect_rc(cmd))
6336 return 0;
6337
6338 memset(chksum_cb, 0, sizeof(*chksum_cb));
6339 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6340 chksum_cb->supported =
6341 cmd->data.setassparms.data.chksum.supported;
6342 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6343 }
6344 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6345 chksum_cb->supported =
6346 cmd->data.setassparms.data.chksum.supported;
6347 chksum_cb->enabled =
6348 cmd->data.setassparms.data.chksum.enabled;
6349 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6350 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6351 }
6352 return 0;
6353 }
6354
6355 /* Send command to OSA card and check results. */
6356 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6357 enum qeth_ipa_funcs ipa_func,
6358 __u16 cmd_code, long data,
6359 struct qeth_checksum_cmd *chksum_cb,
6360 enum qeth_prot_versions prot)
6361 {
6362 struct qeth_cmd_buffer *iob;
6363 int rc = -ENOMEM;
6364
6365 QETH_CARD_TEXT(card, 4, "chkdocmd");
6366 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6367 sizeof(__u32), prot);
6368 if (iob)
6369 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6370 qeth_ipa_checksum_run_cmd_cb,
6371 chksum_cb);
6372 return rc;
6373 }
6374
6375 static int qeth_send_checksum_on(struct qeth_card *card, int cstype,
6376 enum qeth_prot_versions prot)
6377 {
6378 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6379 struct qeth_checksum_cmd chksum_cb;
6380 int rc;
6381
6382 if (prot == QETH_PROT_IPV4)
6383 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6384 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6385 &chksum_cb, prot);
6386 if (!rc) {
6387 if ((required_features & chksum_cb.supported) !=
6388 required_features)
6389 rc = -EIO;
6390 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6391 cstype == IPA_INBOUND_CHECKSUM)
6392 dev_warn(&card->gdev->dev,
6393 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6394 QETH_CARD_IFNAME(card));
6395 }
6396 if (rc) {
6397 qeth_send_simple_setassparms_prot(card, cstype,
6398 IPA_CMD_ASS_STOP, 0, prot);
6399 dev_warn(&card->gdev->dev,
6400 "Starting HW IPv%d checksumming for %s failed, using SW checksumming\n",
6401 prot, QETH_CARD_IFNAME(card));
6402 return rc;
6403 }
6404 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6405 chksum_cb.supported, &chksum_cb,
6406 prot);
6407 if (!rc) {
6408 if ((required_features & chksum_cb.enabled) !=
6409 required_features)
6410 rc = -EIO;
6411 }
6412 if (rc) {
6413 qeth_send_simple_setassparms_prot(card, cstype,
6414 IPA_CMD_ASS_STOP, 0, prot);
6415 dev_warn(&card->gdev->dev,
6416 "Enabling HW IPv%d checksumming for %s failed, using SW checksumming\n",
6417 prot, QETH_CARD_IFNAME(card));
6418 return rc;
6419 }
6420
6421 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6422 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6423 return 0;
6424 }
6425
6426 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6427 enum qeth_prot_versions prot)
6428 {
6429 int rc = (on) ? qeth_send_checksum_on(card, cstype, prot)
6430 : qeth_send_simple_setassparms_prot(card, cstype,
6431 IPA_CMD_ASS_STOP, 0,
6432 prot);
6433 return rc ? -EIO : 0;
6434 }
6435
6436 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6437 {
6438 int rc;
6439
6440 QETH_CARD_TEXT(card, 3, "sttso");
6441
6442 if (on) {
6443 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6444 IPA_CMD_ASS_START, 0);
6445 if (rc) {
6446 dev_warn(&card->gdev->dev,
6447 "Starting outbound TCP segmentation offload for %s failed\n",
6448 QETH_CARD_IFNAME(card));
6449 return -EIO;
6450 }
6451 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6452 } else {
6453 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6454 IPA_CMD_ASS_STOP, 0);
6455 }
6456 return rc;
6457 }
6458
6459 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6460 {
6461 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6462 int rc_ipv6;
6463
6464 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6465 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6466 QETH_PROT_IPV4);
6467 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6468 /* no/one Offload Assist available, so the rc is trivial */
6469 return rc_ipv4;
6470
6471 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6472 QETH_PROT_IPV6);
6473
6474 if (on)
6475 /* enable: success if any Assist is active */
6476 return (rc_ipv6) ? rc_ipv4 : 0;
6477
6478 /* disable: failure if any Assist is still active */
6479 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6480 }
6481
6482 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO | \
6483 NETIF_F_IPV6_CSUM)
6484 /**
6485 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6486 * @dev: a net_device
6487 */
6488 void qeth_enable_hw_features(struct net_device *dev)
6489 {
6490 struct qeth_card *card = dev->ml_priv;
6491 netdev_features_t features;
6492
6493 rtnl_lock();
6494 features = dev->features;
6495 /* force-off any feature that needs an IPA sequence.
6496 * netdev_update_features() will restart them.
6497 */
6498 dev->features &= ~QETH_HW_FEATURES;
6499 netdev_update_features(dev);
6500 if (features != dev->features)
6501 dev_warn(&card->gdev->dev,
6502 "Device recovery failed to restore all offload features\n");
6503 rtnl_unlock();
6504 }
6505 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6506
6507 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6508 {
6509 struct qeth_card *card = dev->ml_priv;
6510 netdev_features_t changed = dev->features ^ features;
6511 int rc = 0;
6512
6513 QETH_DBF_TEXT(SETUP, 2, "setfeat");
6514 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6515
6516 if ((changed & NETIF_F_IP_CSUM)) {
6517 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6518 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6519 if (rc)
6520 changed ^= NETIF_F_IP_CSUM;
6521 }
6522 if (changed & NETIF_F_IPV6_CSUM) {
6523 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6524 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6525 if (rc)
6526 changed ^= NETIF_F_IPV6_CSUM;
6527 }
6528 if (changed & NETIF_F_RXCSUM) {
6529 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6530 if (rc)
6531 changed ^= NETIF_F_RXCSUM;
6532 }
6533 if ((changed & NETIF_F_TSO)) {
6534 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6535 if (rc)
6536 changed ^= NETIF_F_TSO;
6537 }
6538
6539 /* everything changed successfully? */
6540 if ((dev->features ^ features) == changed)
6541 return 0;
6542 /* something went wrong. save changed features and return error */
6543 dev->features ^= changed;
6544 return -EIO;
6545 }
6546 EXPORT_SYMBOL_GPL(qeth_set_features);
6547
6548 netdev_features_t qeth_fix_features(struct net_device *dev,
6549 netdev_features_t features)
6550 {
6551 struct qeth_card *card = dev->ml_priv;
6552
6553 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6554 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6555 features &= ~NETIF_F_IP_CSUM;
6556 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6557 features &= ~NETIF_F_IPV6_CSUM;
6558 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6559 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6560 features &= ~NETIF_F_RXCSUM;
6561 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6562 features &= ~NETIF_F_TSO;
6563 /* if the card isn't up, remove features that require hw changes */
6564 if (card->state == CARD_STATE_DOWN ||
6565 card->state == CARD_STATE_RECOVER)
6566 features &= ~QETH_HW_FEATURES;
6567 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6568 return features;
6569 }
6570 EXPORT_SYMBOL_GPL(qeth_fix_features);
6571
6572 netdev_features_t qeth_features_check(struct sk_buff *skb,
6573 struct net_device *dev,
6574 netdev_features_t features)
6575 {
6576 /* GSO segmentation builds skbs with
6577 * a (small) linear part for the headers, and
6578 * page frags for the data.
6579 * Compared to a linear skb, the header-only part consumes an
6580 * additional buffer element. This reduces buffer utilization, and
6581 * hurts throughput. So compress small segments into one element.
6582 */
6583 if (netif_needs_gso(skb, features)) {
6584 /* match skb_segment(): */
6585 unsigned int doffset = skb->data - skb_mac_header(skb);
6586 unsigned int hsize = skb_shinfo(skb)->gso_size;
6587 unsigned int hroom = skb_headroom(skb);
6588
6589 /* linearize only if resulting skb allocations are order-0: */
6590 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6591 features &= ~NETIF_F_SG;
6592 }
6593
6594 return vlan_features_check(skb, features);
6595 }
6596 EXPORT_SYMBOL_GPL(qeth_features_check);
6597
6598 static int __init qeth_core_init(void)
6599 {
6600 int rc;
6601
6602 pr_info("loading core functions\n");
6603 INIT_LIST_HEAD(&qeth_core_card_list.list);
6604 INIT_LIST_HEAD(&qeth_dbf_list);
6605 rwlock_init(&qeth_core_card_list.rwlock);
6606 mutex_init(&qeth_mod_mutex);
6607
6608 qeth_wq = create_singlethread_workqueue("qeth_wq");
6609 if (!qeth_wq) {
6610 rc = -ENOMEM;
6611 goto out_err;
6612 }
6613
6614 rc = qeth_register_dbf_views();
6615 if (rc)
6616 goto dbf_err;
6617 qeth_core_root_dev = root_device_register("qeth");
6618 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6619 if (rc)
6620 goto register_err;
6621 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6622 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6623 if (!qeth_core_header_cache) {
6624 rc = -ENOMEM;
6625 goto slab_err;
6626 }
6627 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6628 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6629 if (!qeth_qdio_outbuf_cache) {
6630 rc = -ENOMEM;
6631 goto cqslab_err;
6632 }
6633 rc = ccw_driver_register(&qeth_ccw_driver);
6634 if (rc)
6635 goto ccw_err;
6636 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6637 if (rc)
6638 goto ccwgroup_err;
6639
6640 return 0;
6641
6642 ccwgroup_err:
6643 ccw_driver_unregister(&qeth_ccw_driver);
6644 ccw_err:
6645 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6646 cqslab_err:
6647 kmem_cache_destroy(qeth_core_header_cache);
6648 slab_err:
6649 root_device_unregister(qeth_core_root_dev);
6650 register_err:
6651 qeth_unregister_dbf_views();
6652 dbf_err:
6653 destroy_workqueue(qeth_wq);
6654 out_err:
6655 pr_err("Initializing the qeth device driver failed\n");
6656 return rc;
6657 }
6658
6659 static void __exit qeth_core_exit(void)
6660 {
6661 qeth_clear_dbf_list();
6662 destroy_workqueue(qeth_wq);
6663 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6664 ccw_driver_unregister(&qeth_ccw_driver);
6665 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6666 kmem_cache_destroy(qeth_core_header_cache);
6667 root_device_unregister(qeth_core_root_dev);
6668 qeth_unregister_dbf_views();
6669 pr_info("core functions removed\n");
6670 }
6671
6672 module_init(qeth_core_init);
6673 module_exit(qeth_core_exit);
6674 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6675 MODULE_DESCRIPTION("qeth core functions");
6676 MODULE_LICENSE("GPL");
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git