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s390/qeth: fix GSO throughput regression
[mirror_ubuntu-bionic-kernel.git] / drivers / s390 / net / qeth_core_main.c
1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/ip.h>
18 #include <linux/tcp.h>
19 #include <linux/mii.h>
20 #include <linux/kthread.h>
21 #include <linux/slab.h>
22 #include <linux/if_vlan.h>
23 #include <linux/netdevice.h>
24 #include <linux/netdev_features.h>
25 #include <linux/skbuff.h>
26
27 #include <net/iucv/af_iucv.h>
28 #include <net/dsfield.h>
29
30 #include <asm/ebcdic.h>
31 #include <asm/chpid.h>
32 #include <asm/io.h>
33 #include <asm/sysinfo.h>
34 #include <asm/compat.h>
35 #include <asm/diag.h>
36 #include <asm/cio.h>
37 #include <asm/ccwdev.h>
38
39 #include "qeth_core.h"
40
41 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
42 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
43 /* N P A M L V H */
44 [QETH_DBF_SETUP] = {"qeth_setup",
45 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
46 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
47 &debug_sprintf_view, NULL},
48 [QETH_DBF_CTRL] = {"qeth_control",
49 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
50 };
51 EXPORT_SYMBOL_GPL(qeth_dbf);
52
53 struct qeth_card_list_struct qeth_core_card_list;
54 EXPORT_SYMBOL_GPL(qeth_core_card_list);
55 struct kmem_cache *qeth_core_header_cache;
56 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
57 static struct kmem_cache *qeth_qdio_outbuf_cache;
58
59 static struct device *qeth_core_root_dev;
60 static struct lock_class_key qdio_out_skb_queue_key;
61 static struct mutex qeth_mod_mutex;
62
63 static void qeth_send_control_data_cb(struct qeth_channel *,
64 struct qeth_cmd_buffer *);
65 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
66 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
67 static void qeth_free_buffer_pool(struct qeth_card *);
68 static int qeth_qdio_establish(struct qeth_card *);
69 static void qeth_free_qdio_buffers(struct qeth_card *);
70 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
71 struct qeth_qdio_out_buffer *buf,
72 enum iucv_tx_notify notification);
73 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
74 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
75 struct qeth_qdio_out_buffer *buf,
76 enum qeth_qdio_buffer_states newbufstate);
77 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
78
79 struct workqueue_struct *qeth_wq;
80 EXPORT_SYMBOL_GPL(qeth_wq);
81
82 int qeth_card_hw_is_reachable(struct qeth_card *card)
83 {
84 return (card->state == CARD_STATE_SOFTSETUP) ||
85 (card->state == CARD_STATE_UP);
86 }
87 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
88
89 static void qeth_close_dev_handler(struct work_struct *work)
90 {
91 struct qeth_card *card;
92
93 card = container_of(work, struct qeth_card, close_dev_work);
94 QETH_CARD_TEXT(card, 2, "cldevhdl");
95 rtnl_lock();
96 dev_close(card->dev);
97 rtnl_unlock();
98 ccwgroup_set_offline(card->gdev);
99 }
100
101 void qeth_close_dev(struct qeth_card *card)
102 {
103 QETH_CARD_TEXT(card, 2, "cldevsubm");
104 queue_work(qeth_wq, &card->close_dev_work);
105 }
106 EXPORT_SYMBOL_GPL(qeth_close_dev);
107
108 static const char *qeth_get_cardname(struct qeth_card *card)
109 {
110 if (card->info.guestlan) {
111 switch (card->info.type) {
112 case QETH_CARD_TYPE_OSD:
113 return " Virtual NIC QDIO";
114 case QETH_CARD_TYPE_IQD:
115 return " Virtual NIC Hiper";
116 case QETH_CARD_TYPE_OSM:
117 return " Virtual NIC QDIO - OSM";
118 case QETH_CARD_TYPE_OSX:
119 return " Virtual NIC QDIO - OSX";
120 default:
121 return " unknown";
122 }
123 } else {
124 switch (card->info.type) {
125 case QETH_CARD_TYPE_OSD:
126 return " OSD Express";
127 case QETH_CARD_TYPE_IQD:
128 return " HiperSockets";
129 case QETH_CARD_TYPE_OSN:
130 return " OSN QDIO";
131 case QETH_CARD_TYPE_OSM:
132 return " OSM QDIO";
133 case QETH_CARD_TYPE_OSX:
134 return " OSX QDIO";
135 default:
136 return " unknown";
137 }
138 }
139 return " n/a";
140 }
141
142 /* max length to be returned: 14 */
143 const char *qeth_get_cardname_short(struct qeth_card *card)
144 {
145 if (card->info.guestlan) {
146 switch (card->info.type) {
147 case QETH_CARD_TYPE_OSD:
148 return "Virt.NIC QDIO";
149 case QETH_CARD_TYPE_IQD:
150 return "Virt.NIC Hiper";
151 case QETH_CARD_TYPE_OSM:
152 return "Virt.NIC OSM";
153 case QETH_CARD_TYPE_OSX:
154 return "Virt.NIC OSX";
155 default:
156 return "unknown";
157 }
158 } else {
159 switch (card->info.type) {
160 case QETH_CARD_TYPE_OSD:
161 switch (card->info.link_type) {
162 case QETH_LINK_TYPE_FAST_ETH:
163 return "OSD_100";
164 case QETH_LINK_TYPE_HSTR:
165 return "HSTR";
166 case QETH_LINK_TYPE_GBIT_ETH:
167 return "OSD_1000";
168 case QETH_LINK_TYPE_10GBIT_ETH:
169 return "OSD_10GIG";
170 case QETH_LINK_TYPE_LANE_ETH100:
171 return "OSD_FE_LANE";
172 case QETH_LINK_TYPE_LANE_TR:
173 return "OSD_TR_LANE";
174 case QETH_LINK_TYPE_LANE_ETH1000:
175 return "OSD_GbE_LANE";
176 case QETH_LINK_TYPE_LANE:
177 return "OSD_ATM_LANE";
178 default:
179 return "OSD_Express";
180 }
181 case QETH_CARD_TYPE_IQD:
182 return "HiperSockets";
183 case QETH_CARD_TYPE_OSN:
184 return "OSN";
185 case QETH_CARD_TYPE_OSM:
186 return "OSM_1000";
187 case QETH_CARD_TYPE_OSX:
188 return "OSX_10GIG";
189 default:
190 return "unknown";
191 }
192 }
193 return "n/a";
194 }
195
196 void qeth_set_recovery_task(struct qeth_card *card)
197 {
198 card->recovery_task = current;
199 }
200 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
201
202 void qeth_clear_recovery_task(struct qeth_card *card)
203 {
204 card->recovery_task = NULL;
205 }
206 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
207
208 static bool qeth_is_recovery_task(const struct qeth_card *card)
209 {
210 return card->recovery_task == current;
211 }
212
213 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
214 int clear_start_mask)
215 {
216 unsigned long flags;
217
218 spin_lock_irqsave(&card->thread_mask_lock, flags);
219 card->thread_allowed_mask = threads;
220 if (clear_start_mask)
221 card->thread_start_mask &= threads;
222 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
223 wake_up(&card->wait_q);
224 }
225 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
226
227 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
228 {
229 unsigned long flags;
230 int rc = 0;
231
232 spin_lock_irqsave(&card->thread_mask_lock, flags);
233 rc = (card->thread_running_mask & threads);
234 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
235 return rc;
236 }
237 EXPORT_SYMBOL_GPL(qeth_threads_running);
238
239 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
240 {
241 if (qeth_is_recovery_task(card))
242 return 0;
243 return wait_event_interruptible(card->wait_q,
244 qeth_threads_running(card, threads) == 0);
245 }
246 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
247
248 void qeth_clear_working_pool_list(struct qeth_card *card)
249 {
250 struct qeth_buffer_pool_entry *pool_entry, *tmp;
251
252 QETH_CARD_TEXT(card, 5, "clwrklst");
253 list_for_each_entry_safe(pool_entry, tmp,
254 &card->qdio.in_buf_pool.entry_list, list){
255 list_del(&pool_entry->list);
256 }
257 }
258 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
259
260 static int qeth_alloc_buffer_pool(struct qeth_card *card)
261 {
262 struct qeth_buffer_pool_entry *pool_entry;
263 void *ptr;
264 int i, j;
265
266 QETH_CARD_TEXT(card, 5, "alocpool");
267 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
268 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
269 if (!pool_entry) {
270 qeth_free_buffer_pool(card);
271 return -ENOMEM;
272 }
273 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
274 ptr = (void *) __get_free_page(GFP_KERNEL);
275 if (!ptr) {
276 while (j > 0)
277 free_page((unsigned long)
278 pool_entry->elements[--j]);
279 kfree(pool_entry);
280 qeth_free_buffer_pool(card);
281 return -ENOMEM;
282 }
283 pool_entry->elements[j] = ptr;
284 }
285 list_add(&pool_entry->init_list,
286 &card->qdio.init_pool.entry_list);
287 }
288 return 0;
289 }
290
291 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
292 {
293 QETH_CARD_TEXT(card, 2, "realcbp");
294
295 if ((card->state != CARD_STATE_DOWN) &&
296 (card->state != CARD_STATE_RECOVER))
297 return -EPERM;
298
299 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
300 qeth_clear_working_pool_list(card);
301 qeth_free_buffer_pool(card);
302 card->qdio.in_buf_pool.buf_count = bufcnt;
303 card->qdio.init_pool.buf_count = bufcnt;
304 return qeth_alloc_buffer_pool(card);
305 }
306 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
307
308 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
309 {
310 if (!q)
311 return;
312
313 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
314 kfree(q);
315 }
316
317 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
318 {
319 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
320 int i;
321
322 if (!q)
323 return NULL;
324
325 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
326 kfree(q);
327 return NULL;
328 }
329
330 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
331 q->bufs[i].buffer = q->qdio_bufs[i];
332
333 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
334 return q;
335 }
336
337 static int qeth_cq_init(struct qeth_card *card)
338 {
339 int rc;
340
341 if (card->options.cq == QETH_CQ_ENABLED) {
342 QETH_DBF_TEXT(SETUP, 2, "cqinit");
343 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
344 QDIO_MAX_BUFFERS_PER_Q);
345 card->qdio.c_q->next_buf_to_init = 127;
346 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
347 card->qdio.no_in_queues - 1, 0,
348 127);
349 if (rc) {
350 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
351 goto out;
352 }
353 }
354 rc = 0;
355 out:
356 return rc;
357 }
358
359 static int qeth_alloc_cq(struct qeth_card *card)
360 {
361 int rc;
362
363 if (card->options.cq == QETH_CQ_ENABLED) {
364 int i;
365 struct qdio_outbuf_state *outbuf_states;
366
367 QETH_DBF_TEXT(SETUP, 2, "cqon");
368 card->qdio.c_q = qeth_alloc_qdio_queue();
369 if (!card->qdio.c_q) {
370 rc = -1;
371 goto kmsg_out;
372 }
373 card->qdio.no_in_queues = 2;
374 card->qdio.out_bufstates =
375 kzalloc(card->qdio.no_out_queues *
376 QDIO_MAX_BUFFERS_PER_Q *
377 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
378 outbuf_states = card->qdio.out_bufstates;
379 if (outbuf_states == NULL) {
380 rc = -1;
381 goto free_cq_out;
382 }
383 for (i = 0; i < card->qdio.no_out_queues; ++i) {
384 card->qdio.out_qs[i]->bufstates = outbuf_states;
385 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
386 }
387 } else {
388 QETH_DBF_TEXT(SETUP, 2, "nocq");
389 card->qdio.c_q = NULL;
390 card->qdio.no_in_queues = 1;
391 }
392 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
393 rc = 0;
394 out:
395 return rc;
396 free_cq_out:
397 qeth_free_qdio_queue(card->qdio.c_q);
398 card->qdio.c_q = NULL;
399 kmsg_out:
400 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
401 goto out;
402 }
403
404 static void qeth_free_cq(struct qeth_card *card)
405 {
406 if (card->qdio.c_q) {
407 --card->qdio.no_in_queues;
408 qeth_free_qdio_queue(card->qdio.c_q);
409 card->qdio.c_q = NULL;
410 }
411 kfree(card->qdio.out_bufstates);
412 card->qdio.out_bufstates = NULL;
413 }
414
415 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
416 int delayed)
417 {
418 enum iucv_tx_notify n;
419
420 switch (sbalf15) {
421 case 0:
422 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
423 break;
424 case 4:
425 case 16:
426 case 17:
427 case 18:
428 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
429 TX_NOTIFY_UNREACHABLE;
430 break;
431 default:
432 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
433 TX_NOTIFY_GENERALERROR;
434 break;
435 }
436
437 return n;
438 }
439
440 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
441 int forced_cleanup)
442 {
443 if (q->card->options.cq != QETH_CQ_ENABLED)
444 return;
445
446 if (q->bufs[bidx]->next_pending != NULL) {
447 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
448 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
449
450 while (c) {
451 if (forced_cleanup ||
452 atomic_read(&c->state) ==
453 QETH_QDIO_BUF_HANDLED_DELAYED) {
454 struct qeth_qdio_out_buffer *f = c;
455 QETH_CARD_TEXT(f->q->card, 5, "fp");
456 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
457 /* release here to avoid interleaving between
458 outbound tasklet and inbound tasklet
459 regarding notifications and lifecycle */
460 qeth_release_skbs(c);
461
462 c = f->next_pending;
463 WARN_ON_ONCE(head->next_pending != f);
464 head->next_pending = c;
465 kmem_cache_free(qeth_qdio_outbuf_cache, f);
466 } else {
467 head = c;
468 c = c->next_pending;
469 }
470
471 }
472 }
473 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
474 QETH_QDIO_BUF_HANDLED_DELAYED)) {
475 /* for recovery situations */
476 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
477 qeth_init_qdio_out_buf(q, bidx);
478 QETH_CARD_TEXT(q->card, 2, "clprecov");
479 }
480 }
481
482
483 static void qeth_qdio_handle_aob(struct qeth_card *card,
484 unsigned long phys_aob_addr)
485 {
486 struct qaob *aob;
487 struct qeth_qdio_out_buffer *buffer;
488 enum iucv_tx_notify notification;
489
490 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
491 QETH_CARD_TEXT(card, 5, "haob");
492 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
493 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
494 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
495
496 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
497 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
498 notification = TX_NOTIFY_OK;
499 } else {
500 WARN_ON_ONCE(atomic_read(&buffer->state) !=
501 QETH_QDIO_BUF_PENDING);
502 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
503 notification = TX_NOTIFY_DELAYED_OK;
504 }
505
506 if (aob->aorc != 0) {
507 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
508 notification = qeth_compute_cq_notification(aob->aorc, 1);
509 }
510 qeth_notify_skbs(buffer->q, buffer, notification);
511
512 buffer->aob = NULL;
513 qeth_clear_output_buffer(buffer->q, buffer,
514 QETH_QDIO_BUF_HANDLED_DELAYED);
515
516 /* from here on: do not touch buffer anymore */
517 qdio_release_aob(aob);
518 }
519
520 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
521 {
522 return card->options.cq == QETH_CQ_ENABLED &&
523 card->qdio.c_q != NULL &&
524 queue != 0 &&
525 queue == card->qdio.no_in_queues - 1;
526 }
527
528
529 static int qeth_issue_next_read(struct qeth_card *card)
530 {
531 int rc;
532 struct qeth_cmd_buffer *iob;
533
534 QETH_CARD_TEXT(card, 5, "issnxrd");
535 if (card->read.state != CH_STATE_UP)
536 return -EIO;
537 iob = qeth_get_buffer(&card->read);
538 if (!iob) {
539 dev_warn(&card->gdev->dev, "The qeth device driver "
540 "failed to recover an error on the device\n");
541 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
542 "available\n", dev_name(&card->gdev->dev));
543 return -ENOMEM;
544 }
545 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
546 QETH_CARD_TEXT(card, 6, "noirqpnd");
547 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
548 (addr_t) iob, 0, 0);
549 if (rc) {
550 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
551 "rc=%i\n", dev_name(&card->gdev->dev), rc);
552 atomic_set(&card->read.irq_pending, 0);
553 card->read_or_write_problem = 1;
554 qeth_schedule_recovery(card);
555 wake_up(&card->wait_q);
556 }
557 return rc;
558 }
559
560 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
561 {
562 struct qeth_reply *reply;
563
564 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
565 if (reply) {
566 atomic_set(&reply->refcnt, 1);
567 atomic_set(&reply->received, 0);
568 reply->card = card;
569 }
570 return reply;
571 }
572
573 static void qeth_get_reply(struct qeth_reply *reply)
574 {
575 WARN_ON(atomic_read(&reply->refcnt) <= 0);
576 atomic_inc(&reply->refcnt);
577 }
578
579 static void qeth_put_reply(struct qeth_reply *reply)
580 {
581 WARN_ON(atomic_read(&reply->refcnt) <= 0);
582 if (atomic_dec_and_test(&reply->refcnt))
583 kfree(reply);
584 }
585
586 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
587 struct qeth_card *card)
588 {
589 char *ipa_name;
590 int com = cmd->hdr.command;
591 ipa_name = qeth_get_ipa_cmd_name(com);
592 if (rc)
593 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
594 "x%X \"%s\"\n",
595 ipa_name, com, dev_name(&card->gdev->dev),
596 QETH_CARD_IFNAME(card), rc,
597 qeth_get_ipa_msg(rc));
598 else
599 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
600 ipa_name, com, dev_name(&card->gdev->dev),
601 QETH_CARD_IFNAME(card));
602 }
603
604 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
605 struct qeth_cmd_buffer *iob)
606 {
607 struct qeth_ipa_cmd *cmd = NULL;
608
609 QETH_CARD_TEXT(card, 5, "chkipad");
610 if (IS_IPA(iob->data)) {
611 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
612 if (IS_IPA_REPLY(cmd)) {
613 if (cmd->hdr.command != IPA_CMD_SETCCID &&
614 cmd->hdr.command != IPA_CMD_DELCCID &&
615 cmd->hdr.command != IPA_CMD_MODCCID &&
616 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
617 qeth_issue_ipa_msg(cmd,
618 cmd->hdr.return_code, card);
619 return cmd;
620 } else {
621 switch (cmd->hdr.command) {
622 case IPA_CMD_STOPLAN:
623 if (cmd->hdr.return_code ==
624 IPA_RC_VEPA_TO_VEB_TRANSITION) {
625 dev_err(&card->gdev->dev,
626 "Interface %s is down because the "
627 "adjacent port is no longer in "
628 "reflective relay mode\n",
629 QETH_CARD_IFNAME(card));
630 qeth_close_dev(card);
631 } else {
632 dev_warn(&card->gdev->dev,
633 "The link for interface %s on CHPID"
634 " 0x%X failed\n",
635 QETH_CARD_IFNAME(card),
636 card->info.chpid);
637 qeth_issue_ipa_msg(cmd,
638 cmd->hdr.return_code, card);
639 }
640 card->lan_online = 0;
641 if (card->dev && netif_carrier_ok(card->dev))
642 netif_carrier_off(card->dev);
643 return NULL;
644 case IPA_CMD_STARTLAN:
645 dev_info(&card->gdev->dev,
646 "The link for %s on CHPID 0x%X has"
647 " been restored\n",
648 QETH_CARD_IFNAME(card),
649 card->info.chpid);
650 netif_carrier_on(card->dev);
651 card->lan_online = 1;
652 if (card->info.hwtrap)
653 card->info.hwtrap = 2;
654 qeth_schedule_recovery(card);
655 return NULL;
656 case IPA_CMD_SETBRIDGEPORT_IQD:
657 case IPA_CMD_SETBRIDGEPORT_OSA:
658 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
659 if (card->discipline->control_event_handler
660 (card, cmd))
661 return cmd;
662 else
663 return NULL;
664 case IPA_CMD_MODCCID:
665 return cmd;
666 case IPA_CMD_REGISTER_LOCAL_ADDR:
667 QETH_CARD_TEXT(card, 3, "irla");
668 break;
669 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
670 QETH_CARD_TEXT(card, 3, "urla");
671 break;
672 default:
673 QETH_DBF_MESSAGE(2, "Received data is IPA "
674 "but not a reply!\n");
675 break;
676 }
677 }
678 }
679 return cmd;
680 }
681
682 void qeth_clear_ipacmd_list(struct qeth_card *card)
683 {
684 struct qeth_reply *reply, *r;
685 unsigned long flags;
686
687 QETH_CARD_TEXT(card, 4, "clipalst");
688
689 spin_lock_irqsave(&card->lock, flags);
690 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
691 qeth_get_reply(reply);
692 reply->rc = -EIO;
693 atomic_inc(&reply->received);
694 list_del_init(&reply->list);
695 wake_up(&reply->wait_q);
696 qeth_put_reply(reply);
697 }
698 spin_unlock_irqrestore(&card->lock, flags);
699 atomic_set(&card->write.irq_pending, 0);
700 }
701 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
702
703 static int qeth_check_idx_response(struct qeth_card *card,
704 unsigned char *buffer)
705 {
706 if (!buffer)
707 return 0;
708
709 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
710 if ((buffer[2] & 0xc0) == 0xc0) {
711 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
712 "with cause code 0x%02x%s\n",
713 buffer[4],
714 ((buffer[4] == 0x22) ?
715 " -- try another portname" : ""));
716 QETH_CARD_TEXT(card, 2, "ckidxres");
717 QETH_CARD_TEXT(card, 2, " idxterm");
718 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
719 if (buffer[4] == 0xf6) {
720 dev_err(&card->gdev->dev,
721 "The qeth device is not configured "
722 "for the OSI layer required by z/VM\n");
723 return -EPERM;
724 }
725 return -EIO;
726 }
727 return 0;
728 }
729
730 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
731 {
732 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
733 dev_get_drvdata(&cdev->dev))->dev);
734 return card;
735 }
736
737 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
738 __u32 len)
739 {
740 struct qeth_card *card;
741
742 card = CARD_FROM_CDEV(channel->ccwdev);
743 QETH_CARD_TEXT(card, 4, "setupccw");
744 if (channel == &card->read)
745 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
746 else
747 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
748 channel->ccw.count = len;
749 channel->ccw.cda = (__u32) __pa(iob);
750 }
751
752 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
753 {
754 __u8 index;
755
756 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
757 index = channel->io_buf_no;
758 do {
759 if (channel->iob[index].state == BUF_STATE_FREE) {
760 channel->iob[index].state = BUF_STATE_LOCKED;
761 channel->io_buf_no = (channel->io_buf_no + 1) %
762 QETH_CMD_BUFFER_NO;
763 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
764 return channel->iob + index;
765 }
766 index = (index + 1) % QETH_CMD_BUFFER_NO;
767 } while (index != channel->io_buf_no);
768
769 return NULL;
770 }
771
772 void qeth_release_buffer(struct qeth_channel *channel,
773 struct qeth_cmd_buffer *iob)
774 {
775 unsigned long flags;
776
777 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
778 spin_lock_irqsave(&channel->iob_lock, flags);
779 memset(iob->data, 0, QETH_BUFSIZE);
780 iob->state = BUF_STATE_FREE;
781 iob->callback = qeth_send_control_data_cb;
782 iob->rc = 0;
783 spin_unlock_irqrestore(&channel->iob_lock, flags);
784 wake_up(&channel->wait_q);
785 }
786 EXPORT_SYMBOL_GPL(qeth_release_buffer);
787
788 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
789 {
790 struct qeth_cmd_buffer *buffer = NULL;
791 unsigned long flags;
792
793 spin_lock_irqsave(&channel->iob_lock, flags);
794 buffer = __qeth_get_buffer(channel);
795 spin_unlock_irqrestore(&channel->iob_lock, flags);
796 return buffer;
797 }
798
799 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
800 {
801 struct qeth_cmd_buffer *buffer;
802 wait_event(channel->wait_q,
803 ((buffer = qeth_get_buffer(channel)) != NULL));
804 return buffer;
805 }
806 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
807
808 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
809 {
810 int cnt;
811
812 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
813 qeth_release_buffer(channel, &channel->iob[cnt]);
814 channel->buf_no = 0;
815 channel->io_buf_no = 0;
816 }
817 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
818
819 static void qeth_send_control_data_cb(struct qeth_channel *channel,
820 struct qeth_cmd_buffer *iob)
821 {
822 struct qeth_card *card;
823 struct qeth_reply *reply, *r;
824 struct qeth_ipa_cmd *cmd;
825 unsigned long flags;
826 int keep_reply;
827 int rc = 0;
828
829 card = CARD_FROM_CDEV(channel->ccwdev);
830 QETH_CARD_TEXT(card, 4, "sndctlcb");
831 rc = qeth_check_idx_response(card, iob->data);
832 switch (rc) {
833 case 0:
834 break;
835 case -EIO:
836 qeth_clear_ipacmd_list(card);
837 qeth_schedule_recovery(card);
838 /* fall through */
839 default:
840 goto out;
841 }
842
843 cmd = qeth_check_ipa_data(card, iob);
844 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
845 goto out;
846 /*in case of OSN : check if cmd is set */
847 if (card->info.type == QETH_CARD_TYPE_OSN &&
848 cmd &&
849 cmd->hdr.command != IPA_CMD_STARTLAN &&
850 card->osn_info.assist_cb != NULL) {
851 card->osn_info.assist_cb(card->dev, cmd);
852 goto out;
853 }
854
855 spin_lock_irqsave(&card->lock, flags);
856 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
857 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
858 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
859 qeth_get_reply(reply);
860 list_del_init(&reply->list);
861 spin_unlock_irqrestore(&card->lock, flags);
862 keep_reply = 0;
863 if (reply->callback != NULL) {
864 if (cmd) {
865 reply->offset = (__u16)((char *)cmd -
866 (char *)iob->data);
867 keep_reply = reply->callback(card,
868 reply,
869 (unsigned long)cmd);
870 } else
871 keep_reply = reply->callback(card,
872 reply,
873 (unsigned long)iob);
874 }
875 if (cmd)
876 reply->rc = (u16) cmd->hdr.return_code;
877 else if (iob->rc)
878 reply->rc = iob->rc;
879 if (keep_reply) {
880 spin_lock_irqsave(&card->lock, flags);
881 list_add_tail(&reply->list,
882 &card->cmd_waiter_list);
883 spin_unlock_irqrestore(&card->lock, flags);
884 } else {
885 atomic_inc(&reply->received);
886 wake_up(&reply->wait_q);
887 }
888 qeth_put_reply(reply);
889 goto out;
890 }
891 }
892 spin_unlock_irqrestore(&card->lock, flags);
893 out:
894 memcpy(&card->seqno.pdu_hdr_ack,
895 QETH_PDU_HEADER_SEQ_NO(iob->data),
896 QETH_SEQ_NO_LENGTH);
897 qeth_release_buffer(channel, iob);
898 }
899
900 static int qeth_setup_channel(struct qeth_channel *channel)
901 {
902 int cnt;
903
904 QETH_DBF_TEXT(SETUP, 2, "setupch");
905 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
906 channel->iob[cnt].data =
907 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
908 if (channel->iob[cnt].data == NULL)
909 break;
910 channel->iob[cnt].state = BUF_STATE_FREE;
911 channel->iob[cnt].channel = channel;
912 channel->iob[cnt].callback = qeth_send_control_data_cb;
913 channel->iob[cnt].rc = 0;
914 }
915 if (cnt < QETH_CMD_BUFFER_NO) {
916 while (cnt-- > 0)
917 kfree(channel->iob[cnt].data);
918 return -ENOMEM;
919 }
920 channel->buf_no = 0;
921 channel->io_buf_no = 0;
922 atomic_set(&channel->irq_pending, 0);
923 spin_lock_init(&channel->iob_lock);
924
925 init_waitqueue_head(&channel->wait_q);
926 return 0;
927 }
928
929 static int qeth_set_thread_start_bit(struct qeth_card *card,
930 unsigned long thread)
931 {
932 unsigned long flags;
933
934 spin_lock_irqsave(&card->thread_mask_lock, flags);
935 if (!(card->thread_allowed_mask & thread) ||
936 (card->thread_start_mask & thread)) {
937 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
938 return -EPERM;
939 }
940 card->thread_start_mask |= thread;
941 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
942 return 0;
943 }
944
945 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
946 {
947 unsigned long flags;
948
949 spin_lock_irqsave(&card->thread_mask_lock, flags);
950 card->thread_start_mask &= ~thread;
951 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
952 wake_up(&card->wait_q);
953 }
954 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
955
956 void qeth_clear_thread_running_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_running_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_running_bit);
966
967 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
968 {
969 unsigned long flags;
970 int rc = 0;
971
972 spin_lock_irqsave(&card->thread_mask_lock, flags);
973 if (card->thread_start_mask & thread) {
974 if ((card->thread_allowed_mask & thread) &&
975 !(card->thread_running_mask & thread)) {
976 rc = 1;
977 card->thread_start_mask &= ~thread;
978 card->thread_running_mask |= thread;
979 } else
980 rc = -EPERM;
981 }
982 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
983 return rc;
984 }
985
986 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
987 {
988 int rc = 0;
989
990 wait_event(card->wait_q,
991 (rc = __qeth_do_run_thread(card, thread)) >= 0);
992 return rc;
993 }
994 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
995
996 void qeth_schedule_recovery(struct qeth_card *card)
997 {
998 QETH_CARD_TEXT(card, 2, "startrec");
999 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
1000 schedule_work(&card->kernel_thread_starter);
1001 }
1002 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
1003
1004 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
1005 {
1006 int dstat, cstat;
1007 char *sense;
1008 struct qeth_card *card;
1009
1010 sense = (char *) irb->ecw;
1011 cstat = irb->scsw.cmd.cstat;
1012 dstat = irb->scsw.cmd.dstat;
1013 card = CARD_FROM_CDEV(cdev);
1014
1015 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1016 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1017 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1018 QETH_CARD_TEXT(card, 2, "CGENCHK");
1019 dev_warn(&cdev->dev, "The qeth device driver "
1020 "failed to recover an error on the device\n");
1021 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1022 dev_name(&cdev->dev), dstat, cstat);
1023 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1024 16, 1, irb, 64, 1);
1025 return 1;
1026 }
1027
1028 if (dstat & DEV_STAT_UNIT_CHECK) {
1029 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1030 SENSE_RESETTING_EVENT_FLAG) {
1031 QETH_CARD_TEXT(card, 2, "REVIND");
1032 return 1;
1033 }
1034 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1035 SENSE_COMMAND_REJECT_FLAG) {
1036 QETH_CARD_TEXT(card, 2, "CMDREJi");
1037 return 1;
1038 }
1039 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1040 QETH_CARD_TEXT(card, 2, "AFFE");
1041 return 1;
1042 }
1043 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1044 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1045 return 0;
1046 }
1047 QETH_CARD_TEXT(card, 2, "DGENCHK");
1048 return 1;
1049 }
1050 return 0;
1051 }
1052
1053 static long __qeth_check_irb_error(struct ccw_device *cdev,
1054 unsigned long intparm, struct irb *irb)
1055 {
1056 struct qeth_card *card;
1057
1058 card = CARD_FROM_CDEV(cdev);
1059
1060 if (!card || !IS_ERR(irb))
1061 return 0;
1062
1063 switch (PTR_ERR(irb)) {
1064 case -EIO:
1065 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1066 dev_name(&cdev->dev));
1067 QETH_CARD_TEXT(card, 2, "ckirberr");
1068 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1069 break;
1070 case -ETIMEDOUT:
1071 dev_warn(&cdev->dev, "A hardware operation timed out"
1072 " on the device\n");
1073 QETH_CARD_TEXT(card, 2, "ckirberr");
1074 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1075 if (intparm == QETH_RCD_PARM) {
1076 if (card->data.ccwdev == cdev) {
1077 card->data.state = CH_STATE_DOWN;
1078 wake_up(&card->wait_q);
1079 }
1080 }
1081 break;
1082 default:
1083 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1084 dev_name(&cdev->dev), PTR_ERR(irb));
1085 QETH_CARD_TEXT(card, 2, "ckirberr");
1086 QETH_CARD_TEXT(card, 2, " rc???");
1087 }
1088 return PTR_ERR(irb);
1089 }
1090
1091 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1092 struct irb *irb)
1093 {
1094 int rc;
1095 int cstat, dstat;
1096 struct qeth_cmd_buffer *buffer;
1097 struct qeth_channel *channel;
1098 struct qeth_card *card;
1099 struct qeth_cmd_buffer *iob;
1100 __u8 index;
1101
1102 if (__qeth_check_irb_error(cdev, intparm, irb))
1103 return;
1104 cstat = irb->scsw.cmd.cstat;
1105 dstat = irb->scsw.cmd.dstat;
1106
1107 card = CARD_FROM_CDEV(cdev);
1108 if (!card)
1109 return;
1110
1111 QETH_CARD_TEXT(card, 5, "irq");
1112
1113 if (card->read.ccwdev == cdev) {
1114 channel = &card->read;
1115 QETH_CARD_TEXT(card, 5, "read");
1116 } else if (card->write.ccwdev == cdev) {
1117 channel = &card->write;
1118 QETH_CARD_TEXT(card, 5, "write");
1119 } else {
1120 channel = &card->data;
1121 QETH_CARD_TEXT(card, 5, "data");
1122 }
1123 atomic_set(&channel->irq_pending, 0);
1124
1125 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1126 channel->state = CH_STATE_STOPPED;
1127
1128 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1129 channel->state = CH_STATE_HALTED;
1130
1131 /*let's wake up immediately on data channel*/
1132 if ((channel == &card->data) && (intparm != 0) &&
1133 (intparm != QETH_RCD_PARM))
1134 goto out;
1135
1136 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1137 QETH_CARD_TEXT(card, 6, "clrchpar");
1138 /* we don't have to handle this further */
1139 intparm = 0;
1140 }
1141 if (intparm == QETH_HALT_CHANNEL_PARM) {
1142 QETH_CARD_TEXT(card, 6, "hltchpar");
1143 /* we don't have to handle this further */
1144 intparm = 0;
1145 }
1146 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1147 (dstat & DEV_STAT_UNIT_CHECK) ||
1148 (cstat)) {
1149 if (irb->esw.esw0.erw.cons) {
1150 dev_warn(&channel->ccwdev->dev,
1151 "The qeth device driver failed to recover "
1152 "an error on the device\n");
1153 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1154 "0x%X dstat 0x%X\n",
1155 dev_name(&channel->ccwdev->dev), cstat, dstat);
1156 print_hex_dump(KERN_WARNING, "qeth: irb ",
1157 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1158 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1159 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1160 }
1161 if (intparm == QETH_RCD_PARM) {
1162 channel->state = CH_STATE_DOWN;
1163 goto out;
1164 }
1165 rc = qeth_get_problem(cdev, irb);
1166 if (rc) {
1167 qeth_clear_ipacmd_list(card);
1168 qeth_schedule_recovery(card);
1169 goto out;
1170 }
1171 }
1172
1173 if (intparm == QETH_RCD_PARM) {
1174 channel->state = CH_STATE_RCD_DONE;
1175 goto out;
1176 }
1177 if (intparm) {
1178 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1179 buffer->state = BUF_STATE_PROCESSED;
1180 }
1181 if (channel == &card->data)
1182 return;
1183 if (channel == &card->read &&
1184 channel->state == CH_STATE_UP)
1185 qeth_issue_next_read(card);
1186
1187 iob = channel->iob;
1188 index = channel->buf_no;
1189 while (iob[index].state == BUF_STATE_PROCESSED) {
1190 if (iob[index].callback != NULL)
1191 iob[index].callback(channel, iob + index);
1192
1193 index = (index + 1) % QETH_CMD_BUFFER_NO;
1194 }
1195 channel->buf_no = index;
1196 out:
1197 wake_up(&card->wait_q);
1198 return;
1199 }
1200
1201 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1202 struct qeth_qdio_out_buffer *buf,
1203 enum iucv_tx_notify notification)
1204 {
1205 struct sk_buff *skb;
1206
1207 if (skb_queue_empty(&buf->skb_list))
1208 goto out;
1209 skb = skb_peek(&buf->skb_list);
1210 while (skb) {
1211 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1212 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1213 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1214 if (skb->sk) {
1215 struct iucv_sock *iucv = iucv_sk(skb->sk);
1216 iucv->sk_txnotify(skb, notification);
1217 }
1218 }
1219 if (skb_queue_is_last(&buf->skb_list, skb))
1220 skb = NULL;
1221 else
1222 skb = skb_queue_next(&buf->skb_list, skb);
1223 }
1224 out:
1225 return;
1226 }
1227
1228 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1229 {
1230 struct sk_buff *skb;
1231 struct iucv_sock *iucv;
1232 int notify_general_error = 0;
1233
1234 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1235 notify_general_error = 1;
1236
1237 /* release may never happen from within CQ tasklet scope */
1238 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1239
1240 skb = skb_dequeue(&buf->skb_list);
1241 while (skb) {
1242 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1243 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1244 if (notify_general_error &&
1245 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1246 if (skb->sk) {
1247 iucv = iucv_sk(skb->sk);
1248 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1249 }
1250 }
1251 refcount_dec(&skb->users);
1252 dev_kfree_skb_any(skb);
1253 skb = skb_dequeue(&buf->skb_list);
1254 }
1255 }
1256
1257 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1258 struct qeth_qdio_out_buffer *buf,
1259 enum qeth_qdio_buffer_states newbufstate)
1260 {
1261 int i;
1262
1263 /* is PCI flag set on buffer? */
1264 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1265 atomic_dec(&queue->set_pci_flags_count);
1266
1267 if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1268 qeth_release_skbs(buf);
1269 }
1270 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1271 if (buf->buffer->element[i].addr && buf->is_header[i])
1272 kmem_cache_free(qeth_core_header_cache,
1273 buf->buffer->element[i].addr);
1274 buf->is_header[i] = 0;
1275 buf->buffer->element[i].length = 0;
1276 buf->buffer->element[i].addr = NULL;
1277 buf->buffer->element[i].eflags = 0;
1278 buf->buffer->element[i].sflags = 0;
1279 }
1280 buf->buffer->element[15].eflags = 0;
1281 buf->buffer->element[15].sflags = 0;
1282 buf->next_element_to_fill = 0;
1283 atomic_set(&buf->state, newbufstate);
1284 }
1285
1286 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1287 {
1288 int j;
1289
1290 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1291 if (!q->bufs[j])
1292 continue;
1293 qeth_cleanup_handled_pending(q, j, 1);
1294 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1295 if (free) {
1296 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1297 q->bufs[j] = NULL;
1298 }
1299 }
1300 }
1301
1302 void qeth_clear_qdio_buffers(struct qeth_card *card)
1303 {
1304 int i;
1305
1306 QETH_CARD_TEXT(card, 2, "clearqdbf");
1307 /* clear outbound buffers to free skbs */
1308 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1309 if (card->qdio.out_qs[i]) {
1310 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1311 }
1312 }
1313 }
1314 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1315
1316 static void qeth_free_buffer_pool(struct qeth_card *card)
1317 {
1318 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1319 int i = 0;
1320 list_for_each_entry_safe(pool_entry, tmp,
1321 &card->qdio.init_pool.entry_list, init_list){
1322 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1323 free_page((unsigned long)pool_entry->elements[i]);
1324 list_del(&pool_entry->init_list);
1325 kfree(pool_entry);
1326 }
1327 }
1328
1329 static void qeth_clean_channel(struct qeth_channel *channel)
1330 {
1331 int cnt;
1332
1333 QETH_DBF_TEXT(SETUP, 2, "freech");
1334 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1335 kfree(channel->iob[cnt].data);
1336 }
1337
1338 static void qeth_set_single_write_queues(struct qeth_card *card)
1339 {
1340 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1341 (card->qdio.no_out_queues == 4))
1342 qeth_free_qdio_buffers(card);
1343
1344 card->qdio.no_out_queues = 1;
1345 if (card->qdio.default_out_queue != 0)
1346 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1347
1348 card->qdio.default_out_queue = 0;
1349 }
1350
1351 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1352 {
1353 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1354 (card->qdio.no_out_queues == 1)) {
1355 qeth_free_qdio_buffers(card);
1356 card->qdio.default_out_queue = 2;
1357 }
1358 card->qdio.no_out_queues = 4;
1359 }
1360
1361 static void qeth_update_from_chp_desc(struct qeth_card *card)
1362 {
1363 struct ccw_device *ccwdev;
1364 struct channel_path_desc *chp_dsc;
1365
1366 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1367
1368 ccwdev = card->data.ccwdev;
1369 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1370 if (!chp_dsc)
1371 goto out;
1372
1373 card->info.func_level = 0x4100 + chp_dsc->desc;
1374 if (card->info.type == QETH_CARD_TYPE_IQD)
1375 goto out;
1376
1377 /* CHPP field bit 6 == 1 -> single queue */
1378 if ((chp_dsc->chpp & 0x02) == 0x02)
1379 qeth_set_single_write_queues(card);
1380 else
1381 qeth_set_multiple_write_queues(card);
1382 out:
1383 kfree(chp_dsc);
1384 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1385 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1386 }
1387
1388 static void qeth_init_qdio_info(struct qeth_card *card)
1389 {
1390 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1391 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1392 /* inbound */
1393 card->qdio.no_in_queues = 1;
1394 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1395 if (card->info.type == QETH_CARD_TYPE_IQD)
1396 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1397 else
1398 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1399 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1400 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1401 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1402 }
1403
1404 static void qeth_set_intial_options(struct qeth_card *card)
1405 {
1406 card->options.route4.type = NO_ROUTER;
1407 card->options.route6.type = NO_ROUTER;
1408 card->options.fake_broadcast = 0;
1409 card->options.performance_stats = 0;
1410 card->options.rx_sg_cb = QETH_RX_SG_CB;
1411 card->options.isolation = ISOLATION_MODE_NONE;
1412 card->options.cq = QETH_CQ_DISABLED;
1413 }
1414
1415 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1416 {
1417 unsigned long flags;
1418 int rc = 0;
1419
1420 spin_lock_irqsave(&card->thread_mask_lock, flags);
1421 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1422 (u8) card->thread_start_mask,
1423 (u8) card->thread_allowed_mask,
1424 (u8) card->thread_running_mask);
1425 rc = (card->thread_start_mask & thread);
1426 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1427 return rc;
1428 }
1429
1430 static void qeth_start_kernel_thread(struct work_struct *work)
1431 {
1432 struct task_struct *ts;
1433 struct qeth_card *card = container_of(work, struct qeth_card,
1434 kernel_thread_starter);
1435 QETH_CARD_TEXT(card , 2, "strthrd");
1436
1437 if (card->read.state != CH_STATE_UP &&
1438 card->write.state != CH_STATE_UP)
1439 return;
1440 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1441 ts = kthread_run(card->discipline->recover, (void *)card,
1442 "qeth_recover");
1443 if (IS_ERR(ts)) {
1444 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1445 qeth_clear_thread_running_bit(card,
1446 QETH_RECOVER_THREAD);
1447 }
1448 }
1449 }
1450
1451 static void qeth_buffer_reclaim_work(struct work_struct *);
1452 static int qeth_setup_card(struct qeth_card *card)
1453 {
1454
1455 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1456 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1457
1458 card->read.state = CH_STATE_DOWN;
1459 card->write.state = CH_STATE_DOWN;
1460 card->data.state = CH_STATE_DOWN;
1461 card->state = CARD_STATE_DOWN;
1462 card->lan_online = 0;
1463 card->read_or_write_problem = 0;
1464 card->dev = NULL;
1465 spin_lock_init(&card->vlanlock);
1466 spin_lock_init(&card->mclock);
1467 spin_lock_init(&card->lock);
1468 spin_lock_init(&card->ip_lock);
1469 spin_lock_init(&card->thread_mask_lock);
1470 mutex_init(&card->conf_mutex);
1471 mutex_init(&card->discipline_mutex);
1472 card->thread_start_mask = 0;
1473 card->thread_allowed_mask = 0;
1474 card->thread_running_mask = 0;
1475 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1476 INIT_LIST_HEAD(&card->cmd_waiter_list);
1477 init_waitqueue_head(&card->wait_q);
1478 /* initial options */
1479 qeth_set_intial_options(card);
1480 /* IP address takeover */
1481 INIT_LIST_HEAD(&card->ipato.entries);
1482 card->ipato.enabled = 0;
1483 card->ipato.invert4 = 0;
1484 card->ipato.invert6 = 0;
1485 /* init QDIO stuff */
1486 qeth_init_qdio_info(card);
1487 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1488 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1489 return 0;
1490 }
1491
1492 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1493 {
1494 struct qeth_card *card = container_of(slr, struct qeth_card,
1495 qeth_service_level);
1496 if (card->info.mcl_level[0])
1497 seq_printf(m, "qeth: %s firmware level %s\n",
1498 CARD_BUS_ID(card), card->info.mcl_level);
1499 }
1500
1501 static struct qeth_card *qeth_alloc_card(void)
1502 {
1503 struct qeth_card *card;
1504
1505 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1506 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1507 if (!card)
1508 goto out;
1509 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1510 if (qeth_setup_channel(&card->read))
1511 goto out_ip;
1512 if (qeth_setup_channel(&card->write))
1513 goto out_channel;
1514 card->options.layer2 = -1;
1515 card->qeth_service_level.seq_print = qeth_core_sl_print;
1516 register_service_level(&card->qeth_service_level);
1517 return card;
1518
1519 out_channel:
1520 qeth_clean_channel(&card->read);
1521 out_ip:
1522 kfree(card);
1523 out:
1524 return NULL;
1525 }
1526
1527 static void qeth_determine_card_type(struct qeth_card *card)
1528 {
1529 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1530
1531 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1532 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1533 card->info.type = CARD_RDEV(card)->id.driver_info;
1534 card->qdio.no_out_queues = QETH_MAX_QUEUES;
1535 if (card->info.type == QETH_CARD_TYPE_IQD)
1536 card->info.is_multicast_different = 0x0103;
1537 qeth_update_from_chp_desc(card);
1538 }
1539
1540 static int qeth_clear_channel(struct qeth_channel *channel)
1541 {
1542 unsigned long flags;
1543 struct qeth_card *card;
1544 int rc;
1545
1546 card = CARD_FROM_CDEV(channel->ccwdev);
1547 QETH_CARD_TEXT(card, 3, "clearch");
1548 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1549 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1550 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1551
1552 if (rc)
1553 return rc;
1554 rc = wait_event_interruptible_timeout(card->wait_q,
1555 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1556 if (rc == -ERESTARTSYS)
1557 return rc;
1558 if (channel->state != CH_STATE_STOPPED)
1559 return -ETIME;
1560 channel->state = CH_STATE_DOWN;
1561 return 0;
1562 }
1563
1564 static int qeth_halt_channel(struct qeth_channel *channel)
1565 {
1566 unsigned long flags;
1567 struct qeth_card *card;
1568 int rc;
1569
1570 card = CARD_FROM_CDEV(channel->ccwdev);
1571 QETH_CARD_TEXT(card, 3, "haltch");
1572 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1573 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1574 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1575
1576 if (rc)
1577 return rc;
1578 rc = wait_event_interruptible_timeout(card->wait_q,
1579 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1580 if (rc == -ERESTARTSYS)
1581 return rc;
1582 if (channel->state != CH_STATE_HALTED)
1583 return -ETIME;
1584 return 0;
1585 }
1586
1587 static int qeth_halt_channels(struct qeth_card *card)
1588 {
1589 int rc1 = 0, rc2 = 0, rc3 = 0;
1590
1591 QETH_CARD_TEXT(card, 3, "haltchs");
1592 rc1 = qeth_halt_channel(&card->read);
1593 rc2 = qeth_halt_channel(&card->write);
1594 rc3 = qeth_halt_channel(&card->data);
1595 if (rc1)
1596 return rc1;
1597 if (rc2)
1598 return rc2;
1599 return rc3;
1600 }
1601
1602 static int qeth_clear_channels(struct qeth_card *card)
1603 {
1604 int rc1 = 0, rc2 = 0, rc3 = 0;
1605
1606 QETH_CARD_TEXT(card, 3, "clearchs");
1607 rc1 = qeth_clear_channel(&card->read);
1608 rc2 = qeth_clear_channel(&card->write);
1609 rc3 = qeth_clear_channel(&card->data);
1610 if (rc1)
1611 return rc1;
1612 if (rc2)
1613 return rc2;
1614 return rc3;
1615 }
1616
1617 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1618 {
1619 int rc = 0;
1620
1621 QETH_CARD_TEXT(card, 3, "clhacrd");
1622
1623 if (halt)
1624 rc = qeth_halt_channels(card);
1625 if (rc)
1626 return rc;
1627 return qeth_clear_channels(card);
1628 }
1629
1630 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1631 {
1632 int rc = 0;
1633
1634 QETH_CARD_TEXT(card, 3, "qdioclr");
1635 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1636 QETH_QDIO_CLEANING)) {
1637 case QETH_QDIO_ESTABLISHED:
1638 if (card->info.type == QETH_CARD_TYPE_IQD)
1639 rc = qdio_shutdown(CARD_DDEV(card),
1640 QDIO_FLAG_CLEANUP_USING_HALT);
1641 else
1642 rc = qdio_shutdown(CARD_DDEV(card),
1643 QDIO_FLAG_CLEANUP_USING_CLEAR);
1644 if (rc)
1645 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1646 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1647 break;
1648 case QETH_QDIO_CLEANING:
1649 return rc;
1650 default:
1651 break;
1652 }
1653 rc = qeth_clear_halt_card(card, use_halt);
1654 if (rc)
1655 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1656 card->state = CARD_STATE_DOWN;
1657 return rc;
1658 }
1659 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1660
1661 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1662 int *length)
1663 {
1664 struct ciw *ciw;
1665 char *rcd_buf;
1666 int ret;
1667 struct qeth_channel *channel = &card->data;
1668 unsigned long flags;
1669
1670 /*
1671 * scan for RCD command in extended SenseID data
1672 */
1673 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1674 if (!ciw || ciw->cmd == 0)
1675 return -EOPNOTSUPP;
1676 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1677 if (!rcd_buf)
1678 return -ENOMEM;
1679
1680 channel->ccw.cmd_code = ciw->cmd;
1681 channel->ccw.cda = (__u32) __pa(rcd_buf);
1682 channel->ccw.count = ciw->count;
1683 channel->ccw.flags = CCW_FLAG_SLI;
1684 channel->state = CH_STATE_RCD;
1685 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1686 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1687 QETH_RCD_PARM, LPM_ANYPATH, 0,
1688 QETH_RCD_TIMEOUT);
1689 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1690 if (!ret)
1691 wait_event(card->wait_q,
1692 (channel->state == CH_STATE_RCD_DONE ||
1693 channel->state == CH_STATE_DOWN));
1694 if (channel->state == CH_STATE_DOWN)
1695 ret = -EIO;
1696 else
1697 channel->state = CH_STATE_DOWN;
1698 if (ret) {
1699 kfree(rcd_buf);
1700 *buffer = NULL;
1701 *length = 0;
1702 } else {
1703 *length = ciw->count;
1704 *buffer = rcd_buf;
1705 }
1706 return ret;
1707 }
1708
1709 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1710 {
1711 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1712 card->info.chpid = prcd[30];
1713 card->info.unit_addr2 = prcd[31];
1714 card->info.cula = prcd[63];
1715 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1716 (prcd[0x11] == _ascebc['M']));
1717 }
1718
1719 /* Determine whether the device requires a specific layer discipline */
1720 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1721 {
1722 if (card->info.type == QETH_CARD_TYPE_OSM ||
1723 card->info.type == QETH_CARD_TYPE_OSN) {
1724 QETH_DBF_TEXT(SETUP, 3, "force l2");
1725 return QETH_DISCIPLINE_LAYER2;
1726 }
1727
1728 /* virtual HiperSocket is L3 only: */
1729 if (card->info.guestlan && card->info.type == QETH_CARD_TYPE_IQD) {
1730 QETH_DBF_TEXT(SETUP, 3, "force l3");
1731 return QETH_DISCIPLINE_LAYER3;
1732 }
1733
1734 QETH_DBF_TEXT(SETUP, 3, "force no");
1735 return QETH_DISCIPLINE_UNDETERMINED;
1736 }
1737
1738 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1739 {
1740 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1741
1742 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1743 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1744 card->info.blkt.time_total = 0;
1745 card->info.blkt.inter_packet = 0;
1746 card->info.blkt.inter_packet_jumbo = 0;
1747 } else {
1748 card->info.blkt.time_total = 250;
1749 card->info.blkt.inter_packet = 5;
1750 card->info.blkt.inter_packet_jumbo = 15;
1751 }
1752 }
1753
1754 static void qeth_init_tokens(struct qeth_card *card)
1755 {
1756 card->token.issuer_rm_w = 0x00010103UL;
1757 card->token.cm_filter_w = 0x00010108UL;
1758 card->token.cm_connection_w = 0x0001010aUL;
1759 card->token.ulp_filter_w = 0x0001010bUL;
1760 card->token.ulp_connection_w = 0x0001010dUL;
1761 }
1762
1763 static void qeth_init_func_level(struct qeth_card *card)
1764 {
1765 switch (card->info.type) {
1766 case QETH_CARD_TYPE_IQD:
1767 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1768 break;
1769 case QETH_CARD_TYPE_OSD:
1770 case QETH_CARD_TYPE_OSN:
1771 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1772 break;
1773 default:
1774 break;
1775 }
1776 }
1777
1778 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1779 void (*idx_reply_cb)(struct qeth_channel *,
1780 struct qeth_cmd_buffer *))
1781 {
1782 struct qeth_cmd_buffer *iob;
1783 unsigned long flags;
1784 int rc;
1785 struct qeth_card *card;
1786
1787 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1788 card = CARD_FROM_CDEV(channel->ccwdev);
1789 iob = qeth_get_buffer(channel);
1790 if (!iob)
1791 return -ENOMEM;
1792 iob->callback = idx_reply_cb;
1793 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1794 channel->ccw.count = QETH_BUFSIZE;
1795 channel->ccw.cda = (__u32) __pa(iob->data);
1796
1797 wait_event(card->wait_q,
1798 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1799 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1800 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1801 rc = ccw_device_start(channel->ccwdev,
1802 &channel->ccw, (addr_t) iob, 0, 0);
1803 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1804
1805 if (rc) {
1806 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1807 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1808 atomic_set(&channel->irq_pending, 0);
1809 wake_up(&card->wait_q);
1810 return rc;
1811 }
1812 rc = wait_event_interruptible_timeout(card->wait_q,
1813 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1814 if (rc == -ERESTARTSYS)
1815 return rc;
1816 if (channel->state != CH_STATE_UP) {
1817 rc = -ETIME;
1818 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1819 qeth_clear_cmd_buffers(channel);
1820 } else
1821 rc = 0;
1822 return rc;
1823 }
1824
1825 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1826 void (*idx_reply_cb)(struct qeth_channel *,
1827 struct qeth_cmd_buffer *))
1828 {
1829 struct qeth_card *card;
1830 struct qeth_cmd_buffer *iob;
1831 unsigned long flags;
1832 __u16 temp;
1833 __u8 tmp;
1834 int rc;
1835 struct ccw_dev_id temp_devid;
1836
1837 card = CARD_FROM_CDEV(channel->ccwdev);
1838
1839 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1840
1841 iob = qeth_get_buffer(channel);
1842 if (!iob)
1843 return -ENOMEM;
1844 iob->callback = idx_reply_cb;
1845 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1846 channel->ccw.count = IDX_ACTIVATE_SIZE;
1847 channel->ccw.cda = (__u32) __pa(iob->data);
1848 if (channel == &card->write) {
1849 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1850 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1851 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1852 card->seqno.trans_hdr++;
1853 } else {
1854 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1855 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1856 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1857 }
1858 tmp = ((__u8)card->info.portno) | 0x80;
1859 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1860 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1861 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1862 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1863 &card->info.func_level, sizeof(__u16));
1864 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1865 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1866 temp = (card->info.cula << 8) + card->info.unit_addr2;
1867 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1868
1869 wait_event(card->wait_q,
1870 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1871 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1872 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1873 rc = ccw_device_start(channel->ccwdev,
1874 &channel->ccw, (addr_t) iob, 0, 0);
1875 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1876
1877 if (rc) {
1878 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1879 rc);
1880 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1881 atomic_set(&channel->irq_pending, 0);
1882 wake_up(&card->wait_q);
1883 return rc;
1884 }
1885 rc = wait_event_interruptible_timeout(card->wait_q,
1886 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1887 if (rc == -ERESTARTSYS)
1888 return rc;
1889 if (channel->state != CH_STATE_ACTIVATING) {
1890 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1891 " failed to recover an error on the device\n");
1892 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1893 dev_name(&channel->ccwdev->dev));
1894 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1895 qeth_clear_cmd_buffers(channel);
1896 return -ETIME;
1897 }
1898 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1899 }
1900
1901 static int qeth_peer_func_level(int level)
1902 {
1903 if ((level & 0xff) == 8)
1904 return (level & 0xff) + 0x400;
1905 if (((level >> 8) & 3) == 1)
1906 return (level & 0xff) + 0x200;
1907 return level;
1908 }
1909
1910 static void qeth_idx_write_cb(struct qeth_channel *channel,
1911 struct qeth_cmd_buffer *iob)
1912 {
1913 struct qeth_card *card;
1914 __u16 temp;
1915
1916 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1917
1918 if (channel->state == CH_STATE_DOWN) {
1919 channel->state = CH_STATE_ACTIVATING;
1920 goto out;
1921 }
1922 card = CARD_FROM_CDEV(channel->ccwdev);
1923
1924 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1925 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1926 dev_err(&card->write.ccwdev->dev,
1927 "The adapter is used exclusively by another "
1928 "host\n");
1929 else
1930 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1931 " negative reply\n",
1932 dev_name(&card->write.ccwdev->dev));
1933 goto out;
1934 }
1935 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1936 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1937 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1938 "function level mismatch (sent: 0x%x, received: "
1939 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1940 card->info.func_level, temp);
1941 goto out;
1942 }
1943 channel->state = CH_STATE_UP;
1944 out:
1945 qeth_release_buffer(channel, iob);
1946 }
1947
1948 static void qeth_idx_read_cb(struct qeth_channel *channel,
1949 struct qeth_cmd_buffer *iob)
1950 {
1951 struct qeth_card *card;
1952 __u16 temp;
1953
1954 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1955 if (channel->state == CH_STATE_DOWN) {
1956 channel->state = CH_STATE_ACTIVATING;
1957 goto out;
1958 }
1959
1960 card = CARD_FROM_CDEV(channel->ccwdev);
1961 if (qeth_check_idx_response(card, iob->data))
1962 goto out;
1963
1964 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1965 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1966 case QETH_IDX_ACT_ERR_EXCL:
1967 dev_err(&card->write.ccwdev->dev,
1968 "The adapter is used exclusively by another "
1969 "host\n");
1970 break;
1971 case QETH_IDX_ACT_ERR_AUTH:
1972 case QETH_IDX_ACT_ERR_AUTH_USER:
1973 dev_err(&card->read.ccwdev->dev,
1974 "Setting the device online failed because of "
1975 "insufficient authorization\n");
1976 break;
1977 default:
1978 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1979 " negative reply\n",
1980 dev_name(&card->read.ccwdev->dev));
1981 }
1982 QETH_CARD_TEXT_(card, 2, "idxread%c",
1983 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1984 goto out;
1985 }
1986
1987 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1988 if (temp != qeth_peer_func_level(card->info.func_level)) {
1989 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1990 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1991 dev_name(&card->read.ccwdev->dev),
1992 card->info.func_level, temp);
1993 goto out;
1994 }
1995 memcpy(&card->token.issuer_rm_r,
1996 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1997 QETH_MPC_TOKEN_LENGTH);
1998 memcpy(&card->info.mcl_level[0],
1999 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2000 channel->state = CH_STATE_UP;
2001 out:
2002 qeth_release_buffer(channel, iob);
2003 }
2004
2005 void qeth_prepare_control_data(struct qeth_card *card, int len,
2006 struct qeth_cmd_buffer *iob)
2007 {
2008 qeth_setup_ccw(&card->write, iob->data, len);
2009 iob->callback = qeth_release_buffer;
2010
2011 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2012 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2013 card->seqno.trans_hdr++;
2014 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2015 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2016 card->seqno.pdu_hdr++;
2017 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2018 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2019 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2020 }
2021 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2022
2023 /**
2024 * qeth_send_control_data() - send control command to the card
2025 * @card: qeth_card structure pointer
2026 * @len: size of the command buffer
2027 * @iob: qeth_cmd_buffer pointer
2028 * @reply_cb: callback function pointer
2029 * @cb_card: pointer to the qeth_card structure
2030 * @cb_reply: pointer to the qeth_reply structure
2031 * @cb_cmd: pointer to the original iob for non-IPA
2032 * commands, or to the qeth_ipa_cmd structure
2033 * for the IPA commands.
2034 * @reply_param: private pointer passed to the callback
2035 *
2036 * Returns the value of the `return_code' field of the response
2037 * block returned from the hardware, or other error indication.
2038 * Value of zero indicates successful execution of the command.
2039 *
2040 * Callback function gets called one or more times, with cb_cmd
2041 * pointing to the response returned by the hardware. Callback
2042 * function must return non-zero if more reply blocks are expected,
2043 * and zero if the last or only reply block is received. Callback
2044 * function can get the value of the reply_param pointer from the
2045 * field 'param' of the structure qeth_reply.
2046 */
2047
2048 int qeth_send_control_data(struct qeth_card *card, int len,
2049 struct qeth_cmd_buffer *iob,
2050 int (*reply_cb)(struct qeth_card *cb_card,
2051 struct qeth_reply *cb_reply,
2052 unsigned long cb_cmd),
2053 void *reply_param)
2054 {
2055 int rc;
2056 unsigned long flags;
2057 struct qeth_reply *reply = NULL;
2058 unsigned long timeout, event_timeout;
2059 struct qeth_ipa_cmd *cmd;
2060
2061 QETH_CARD_TEXT(card, 2, "sendctl");
2062
2063 if (card->read_or_write_problem) {
2064 qeth_release_buffer(iob->channel, iob);
2065 return -EIO;
2066 }
2067 reply = qeth_alloc_reply(card);
2068 if (!reply) {
2069 return -ENOMEM;
2070 }
2071 reply->callback = reply_cb;
2072 reply->param = reply_param;
2073 if (card->state == CARD_STATE_DOWN)
2074 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2075 else
2076 reply->seqno = card->seqno.ipa++;
2077 init_waitqueue_head(&reply->wait_q);
2078 spin_lock_irqsave(&card->lock, flags);
2079 list_add_tail(&reply->list, &card->cmd_waiter_list);
2080 spin_unlock_irqrestore(&card->lock, flags);
2081
2082 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2083 qeth_prepare_control_data(card, len, iob);
2084
2085 if (IS_IPA(iob->data))
2086 event_timeout = QETH_IPA_TIMEOUT;
2087 else
2088 event_timeout = QETH_TIMEOUT;
2089 timeout = jiffies + event_timeout;
2090
2091 QETH_CARD_TEXT(card, 6, "noirqpnd");
2092 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2093 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2094 (addr_t) iob, 0, 0);
2095 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2096 if (rc) {
2097 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2098 "ccw_device_start rc = %i\n",
2099 dev_name(&card->write.ccwdev->dev), rc);
2100 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2101 spin_lock_irqsave(&card->lock, flags);
2102 list_del_init(&reply->list);
2103 qeth_put_reply(reply);
2104 spin_unlock_irqrestore(&card->lock, flags);
2105 qeth_release_buffer(iob->channel, iob);
2106 atomic_set(&card->write.irq_pending, 0);
2107 wake_up(&card->wait_q);
2108 return rc;
2109 }
2110
2111 /* we have only one long running ipassist, since we can ensure
2112 process context of this command we can sleep */
2113 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2114 if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2115 (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2116 if (!wait_event_timeout(reply->wait_q,
2117 atomic_read(&reply->received), event_timeout))
2118 goto time_err;
2119 } else {
2120 while (!atomic_read(&reply->received)) {
2121 if (time_after(jiffies, timeout))
2122 goto time_err;
2123 cpu_relax();
2124 }
2125 }
2126
2127 if (reply->rc == -EIO)
2128 goto error;
2129 rc = reply->rc;
2130 qeth_put_reply(reply);
2131 return rc;
2132
2133 time_err:
2134 reply->rc = -ETIME;
2135 spin_lock_irqsave(&reply->card->lock, flags);
2136 list_del_init(&reply->list);
2137 spin_unlock_irqrestore(&reply->card->lock, flags);
2138 atomic_inc(&reply->received);
2139 error:
2140 atomic_set(&card->write.irq_pending, 0);
2141 qeth_release_buffer(iob->channel, iob);
2142 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2143 rc = reply->rc;
2144 qeth_put_reply(reply);
2145 return rc;
2146 }
2147 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2148
2149 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2150 unsigned long data)
2151 {
2152 struct qeth_cmd_buffer *iob;
2153
2154 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2155
2156 iob = (struct qeth_cmd_buffer *) data;
2157 memcpy(&card->token.cm_filter_r,
2158 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2159 QETH_MPC_TOKEN_LENGTH);
2160 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2161 return 0;
2162 }
2163
2164 static int qeth_cm_enable(struct qeth_card *card)
2165 {
2166 int rc;
2167 struct qeth_cmd_buffer *iob;
2168
2169 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2170
2171 iob = qeth_wait_for_buffer(&card->write);
2172 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2173 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2174 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2175 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2176 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2177
2178 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2179 qeth_cm_enable_cb, NULL);
2180 return rc;
2181 }
2182
2183 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2184 unsigned long data)
2185 {
2186
2187 struct qeth_cmd_buffer *iob;
2188
2189 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2190
2191 iob = (struct qeth_cmd_buffer *) data;
2192 memcpy(&card->token.cm_connection_r,
2193 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2194 QETH_MPC_TOKEN_LENGTH);
2195 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2196 return 0;
2197 }
2198
2199 static int qeth_cm_setup(struct qeth_card *card)
2200 {
2201 int rc;
2202 struct qeth_cmd_buffer *iob;
2203
2204 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2205
2206 iob = qeth_wait_for_buffer(&card->write);
2207 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2208 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2209 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2210 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2211 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2212 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2213 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2214 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2215 qeth_cm_setup_cb, NULL);
2216 return rc;
2217
2218 }
2219
2220 static int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2221 {
2222 switch (card->info.type) {
2223 case QETH_CARD_TYPE_IQD:
2224 return card->info.max_mtu;
2225 case QETH_CARD_TYPE_OSD:
2226 case QETH_CARD_TYPE_OSX:
2227 if (!card->options.layer2)
2228 return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */
2229 /* fall through */
2230 default:
2231 return ETH_DATA_LEN;
2232 }
2233 }
2234
2235 static int qeth_get_mtu_outof_framesize(int framesize)
2236 {
2237 switch (framesize) {
2238 case 0x4000:
2239 return 8192;
2240 case 0x6000:
2241 return 16384;
2242 case 0xa000:
2243 return 32768;
2244 case 0xffff:
2245 return 57344;
2246 default:
2247 return 0;
2248 }
2249 }
2250
2251 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2252 {
2253 switch (card->info.type) {
2254 case QETH_CARD_TYPE_OSD:
2255 case QETH_CARD_TYPE_OSM:
2256 case QETH_CARD_TYPE_OSX:
2257 case QETH_CARD_TYPE_IQD:
2258 return ((mtu >= 576) &&
2259 (mtu <= card->info.max_mtu));
2260 case QETH_CARD_TYPE_OSN:
2261 default:
2262 return 1;
2263 }
2264 }
2265
2266 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2267 unsigned long data)
2268 {
2269
2270 __u16 mtu, framesize;
2271 __u16 len;
2272 __u8 link_type;
2273 struct qeth_cmd_buffer *iob;
2274
2275 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2276
2277 iob = (struct qeth_cmd_buffer *) data;
2278 memcpy(&card->token.ulp_filter_r,
2279 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2280 QETH_MPC_TOKEN_LENGTH);
2281 if (card->info.type == QETH_CARD_TYPE_IQD) {
2282 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2283 mtu = qeth_get_mtu_outof_framesize(framesize);
2284 if (!mtu) {
2285 iob->rc = -EINVAL;
2286 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2287 return 0;
2288 }
2289 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2290 /* frame size has changed */
2291 if (card->dev &&
2292 ((card->dev->mtu == card->info.initial_mtu) ||
2293 (card->dev->mtu > mtu)))
2294 card->dev->mtu = mtu;
2295 qeth_free_qdio_buffers(card);
2296 }
2297 card->info.initial_mtu = mtu;
2298 card->info.max_mtu = mtu;
2299 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2300 } else {
2301 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2302 iob->data);
2303 card->info.initial_mtu = min(card->info.max_mtu,
2304 qeth_get_initial_mtu_for_card(card));
2305 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2306 }
2307
2308 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2309 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2310 memcpy(&link_type,
2311 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2312 card->info.link_type = link_type;
2313 } else
2314 card->info.link_type = 0;
2315 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2316 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2317 return 0;
2318 }
2319
2320 static int qeth_ulp_enable(struct qeth_card *card)
2321 {
2322 int rc;
2323 char prot_type;
2324 struct qeth_cmd_buffer *iob;
2325
2326 /*FIXME: trace view callbacks*/
2327 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2328
2329 iob = qeth_wait_for_buffer(&card->write);
2330 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2331
2332 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2333 (__u8) card->info.portno;
2334 if (card->options.layer2)
2335 if (card->info.type == QETH_CARD_TYPE_OSN)
2336 prot_type = QETH_PROT_OSN2;
2337 else
2338 prot_type = QETH_PROT_LAYER2;
2339 else
2340 prot_type = QETH_PROT_TCPIP;
2341
2342 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2343 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2344 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2345 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2346 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2347 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2348 qeth_ulp_enable_cb, NULL);
2349 return rc;
2350
2351 }
2352
2353 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2354 unsigned long data)
2355 {
2356 struct qeth_cmd_buffer *iob;
2357
2358 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2359
2360 iob = (struct qeth_cmd_buffer *) data;
2361 memcpy(&card->token.ulp_connection_r,
2362 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2363 QETH_MPC_TOKEN_LENGTH);
2364 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2365 3)) {
2366 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2367 dev_err(&card->gdev->dev, "A connection could not be "
2368 "established because of an OLM limit\n");
2369 iob->rc = -EMLINK;
2370 }
2371 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2372 return 0;
2373 }
2374
2375 static int qeth_ulp_setup(struct qeth_card *card)
2376 {
2377 int rc;
2378 __u16 temp;
2379 struct qeth_cmd_buffer *iob;
2380 struct ccw_dev_id dev_id;
2381
2382 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2383
2384 iob = qeth_wait_for_buffer(&card->write);
2385 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2386
2387 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2388 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2389 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2390 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2391 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2392 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2393
2394 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2395 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2396 temp = (card->info.cula << 8) + card->info.unit_addr2;
2397 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2398 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2399 qeth_ulp_setup_cb, NULL);
2400 return rc;
2401 }
2402
2403 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2404 {
2405 int rc;
2406 struct qeth_qdio_out_buffer *newbuf;
2407
2408 rc = 0;
2409 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2410 if (!newbuf) {
2411 rc = -ENOMEM;
2412 goto out;
2413 }
2414 newbuf->buffer = q->qdio_bufs[bidx];
2415 skb_queue_head_init(&newbuf->skb_list);
2416 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2417 newbuf->q = q;
2418 newbuf->aob = NULL;
2419 newbuf->next_pending = q->bufs[bidx];
2420 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2421 q->bufs[bidx] = newbuf;
2422 if (q->bufstates) {
2423 q->bufstates[bidx].user = newbuf;
2424 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2425 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2426 QETH_CARD_TEXT_(q->card, 2, "%lx",
2427 (long) newbuf->next_pending);
2428 }
2429 out:
2430 return rc;
2431 }
2432
2433 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2434 {
2435 if (!q)
2436 return;
2437
2438 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2439 kfree(q);
2440 }
2441
2442 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2443 {
2444 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2445
2446 if (!q)
2447 return NULL;
2448
2449 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2450 kfree(q);
2451 return NULL;
2452 }
2453 return q;
2454 }
2455
2456 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2457 {
2458 int i, j;
2459
2460 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2461
2462 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2463 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2464 return 0;
2465
2466 QETH_DBF_TEXT(SETUP, 2, "inq");
2467 card->qdio.in_q = qeth_alloc_qdio_queue();
2468 if (!card->qdio.in_q)
2469 goto out_nomem;
2470
2471 /* inbound buffer pool */
2472 if (qeth_alloc_buffer_pool(card))
2473 goto out_freeinq;
2474
2475 /* outbound */
2476 card->qdio.out_qs =
2477 kzalloc(card->qdio.no_out_queues *
2478 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2479 if (!card->qdio.out_qs)
2480 goto out_freepool;
2481 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2482 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2483 if (!card->qdio.out_qs[i])
2484 goto out_freeoutq;
2485 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2486 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2487 card->qdio.out_qs[i]->queue_no = i;
2488 /* give outbound qeth_qdio_buffers their qdio_buffers */
2489 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2490 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2491 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2492 goto out_freeoutqbufs;
2493 }
2494 }
2495
2496 /* completion */
2497 if (qeth_alloc_cq(card))
2498 goto out_freeoutq;
2499
2500 return 0;
2501
2502 out_freeoutqbufs:
2503 while (j > 0) {
2504 --j;
2505 kmem_cache_free(qeth_qdio_outbuf_cache,
2506 card->qdio.out_qs[i]->bufs[j]);
2507 card->qdio.out_qs[i]->bufs[j] = NULL;
2508 }
2509 out_freeoutq:
2510 while (i > 0) {
2511 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2512 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2513 }
2514 kfree(card->qdio.out_qs);
2515 card->qdio.out_qs = NULL;
2516 out_freepool:
2517 qeth_free_buffer_pool(card);
2518 out_freeinq:
2519 qeth_free_qdio_queue(card->qdio.in_q);
2520 card->qdio.in_q = NULL;
2521 out_nomem:
2522 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2523 return -ENOMEM;
2524 }
2525
2526 static void qeth_free_qdio_buffers(struct qeth_card *card)
2527 {
2528 int i, j;
2529
2530 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2531 QETH_QDIO_UNINITIALIZED)
2532 return;
2533
2534 qeth_free_cq(card);
2535 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2536 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2537 if (card->qdio.in_q->bufs[j].rx_skb)
2538 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2539 }
2540 qeth_free_qdio_queue(card->qdio.in_q);
2541 card->qdio.in_q = NULL;
2542 /* inbound buffer pool */
2543 qeth_free_buffer_pool(card);
2544 /* free outbound qdio_qs */
2545 if (card->qdio.out_qs) {
2546 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2547 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2548 qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2549 }
2550 kfree(card->qdio.out_qs);
2551 card->qdio.out_qs = NULL;
2552 }
2553 }
2554
2555 static void qeth_create_qib_param_field(struct qeth_card *card,
2556 char *param_field)
2557 {
2558
2559 param_field[0] = _ascebc['P'];
2560 param_field[1] = _ascebc['C'];
2561 param_field[2] = _ascebc['I'];
2562 param_field[3] = _ascebc['T'];
2563 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2564 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2565 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2566 }
2567
2568 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2569 char *param_field)
2570 {
2571 param_field[16] = _ascebc['B'];
2572 param_field[17] = _ascebc['L'];
2573 param_field[18] = _ascebc['K'];
2574 param_field[19] = _ascebc['T'];
2575 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2576 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2577 *((unsigned int *) (&param_field[28])) =
2578 card->info.blkt.inter_packet_jumbo;
2579 }
2580
2581 static int qeth_qdio_activate(struct qeth_card *card)
2582 {
2583 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2584 return qdio_activate(CARD_DDEV(card));
2585 }
2586
2587 static int qeth_dm_act(struct qeth_card *card)
2588 {
2589 int rc;
2590 struct qeth_cmd_buffer *iob;
2591
2592 QETH_DBF_TEXT(SETUP, 2, "dmact");
2593
2594 iob = qeth_wait_for_buffer(&card->write);
2595 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2596
2597 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2598 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2599 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2600 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2601 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2602 return rc;
2603 }
2604
2605 static int qeth_mpc_initialize(struct qeth_card *card)
2606 {
2607 int rc;
2608
2609 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2610
2611 rc = qeth_issue_next_read(card);
2612 if (rc) {
2613 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2614 return rc;
2615 }
2616 rc = qeth_cm_enable(card);
2617 if (rc) {
2618 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2619 goto out_qdio;
2620 }
2621 rc = qeth_cm_setup(card);
2622 if (rc) {
2623 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2624 goto out_qdio;
2625 }
2626 rc = qeth_ulp_enable(card);
2627 if (rc) {
2628 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2629 goto out_qdio;
2630 }
2631 rc = qeth_ulp_setup(card);
2632 if (rc) {
2633 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2634 goto out_qdio;
2635 }
2636 rc = qeth_alloc_qdio_buffers(card);
2637 if (rc) {
2638 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2639 goto out_qdio;
2640 }
2641 rc = qeth_qdio_establish(card);
2642 if (rc) {
2643 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2644 qeth_free_qdio_buffers(card);
2645 goto out_qdio;
2646 }
2647 rc = qeth_qdio_activate(card);
2648 if (rc) {
2649 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2650 goto out_qdio;
2651 }
2652 rc = qeth_dm_act(card);
2653 if (rc) {
2654 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2655 goto out_qdio;
2656 }
2657
2658 return 0;
2659 out_qdio:
2660 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2661 qdio_free(CARD_DDEV(card));
2662 return rc;
2663 }
2664
2665 void qeth_print_status_message(struct qeth_card *card)
2666 {
2667 switch (card->info.type) {
2668 case QETH_CARD_TYPE_OSD:
2669 case QETH_CARD_TYPE_OSM:
2670 case QETH_CARD_TYPE_OSX:
2671 /* VM will use a non-zero first character
2672 * to indicate a HiperSockets like reporting
2673 * of the level OSA sets the first character to zero
2674 * */
2675 if (!card->info.mcl_level[0]) {
2676 sprintf(card->info.mcl_level, "%02x%02x",
2677 card->info.mcl_level[2],
2678 card->info.mcl_level[3]);
2679 break;
2680 }
2681 /* fallthrough */
2682 case QETH_CARD_TYPE_IQD:
2683 if ((card->info.guestlan) ||
2684 (card->info.mcl_level[0] & 0x80)) {
2685 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2686 card->info.mcl_level[0]];
2687 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2688 card->info.mcl_level[1]];
2689 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2690 card->info.mcl_level[2]];
2691 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2692 card->info.mcl_level[3]];
2693 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2694 }
2695 break;
2696 default:
2697 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2698 }
2699 dev_info(&card->gdev->dev,
2700 "Device is a%s card%s%s%s\nwith link type %s.\n",
2701 qeth_get_cardname(card),
2702 (card->info.mcl_level[0]) ? " (level: " : "",
2703 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2704 (card->info.mcl_level[0]) ? ")" : "",
2705 qeth_get_cardname_short(card));
2706 }
2707 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2708
2709 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2710 {
2711 struct qeth_buffer_pool_entry *entry;
2712
2713 QETH_CARD_TEXT(card, 5, "inwrklst");
2714
2715 list_for_each_entry(entry,
2716 &card->qdio.init_pool.entry_list, init_list) {
2717 qeth_put_buffer_pool_entry(card, entry);
2718 }
2719 }
2720
2721 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2722 struct qeth_card *card)
2723 {
2724 struct list_head *plh;
2725 struct qeth_buffer_pool_entry *entry;
2726 int i, free;
2727 struct page *page;
2728
2729 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2730 return NULL;
2731
2732 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2733 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2734 free = 1;
2735 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2736 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2737 free = 0;
2738 break;
2739 }
2740 }
2741 if (free) {
2742 list_del_init(&entry->list);
2743 return entry;
2744 }
2745 }
2746
2747 /* no free buffer in pool so take first one and swap pages */
2748 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2749 struct qeth_buffer_pool_entry, list);
2750 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2751 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2752 page = alloc_page(GFP_ATOMIC);
2753 if (!page) {
2754 return NULL;
2755 } else {
2756 free_page((unsigned long)entry->elements[i]);
2757 entry->elements[i] = page_address(page);
2758 if (card->options.performance_stats)
2759 card->perf_stats.sg_alloc_page_rx++;
2760 }
2761 }
2762 }
2763 list_del_init(&entry->list);
2764 return entry;
2765 }
2766
2767 static int qeth_init_input_buffer(struct qeth_card *card,
2768 struct qeth_qdio_buffer *buf)
2769 {
2770 struct qeth_buffer_pool_entry *pool_entry;
2771 int i;
2772
2773 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2774 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2775 if (!buf->rx_skb)
2776 return 1;
2777 }
2778
2779 pool_entry = qeth_find_free_buffer_pool_entry(card);
2780 if (!pool_entry)
2781 return 1;
2782
2783 /*
2784 * since the buffer is accessed only from the input_tasklet
2785 * there shouldn't be a need to synchronize; also, since we use
2786 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2787 * buffers
2788 */
2789
2790 buf->pool_entry = pool_entry;
2791 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2792 buf->buffer->element[i].length = PAGE_SIZE;
2793 buf->buffer->element[i].addr = pool_entry->elements[i];
2794 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2795 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2796 else
2797 buf->buffer->element[i].eflags = 0;
2798 buf->buffer->element[i].sflags = 0;
2799 }
2800 return 0;
2801 }
2802
2803 int qeth_init_qdio_queues(struct qeth_card *card)
2804 {
2805 int i, j;
2806 int rc;
2807
2808 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2809
2810 /* inbound queue */
2811 qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2812 QDIO_MAX_BUFFERS_PER_Q);
2813 qeth_initialize_working_pool_list(card);
2814 /*give only as many buffers to hardware as we have buffer pool entries*/
2815 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2816 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2817 card->qdio.in_q->next_buf_to_init =
2818 card->qdio.in_buf_pool.buf_count - 1;
2819 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2820 card->qdio.in_buf_pool.buf_count - 1);
2821 if (rc) {
2822 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2823 return rc;
2824 }
2825
2826 /* completion */
2827 rc = qeth_cq_init(card);
2828 if (rc) {
2829 return rc;
2830 }
2831
2832 /* outbound queue */
2833 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2834 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2835 QDIO_MAX_BUFFERS_PER_Q);
2836 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2837 qeth_clear_output_buffer(card->qdio.out_qs[i],
2838 card->qdio.out_qs[i]->bufs[j],
2839 QETH_QDIO_BUF_EMPTY);
2840 }
2841 card->qdio.out_qs[i]->card = card;
2842 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2843 card->qdio.out_qs[i]->do_pack = 0;
2844 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2845 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2846 atomic_set(&card->qdio.out_qs[i]->state,
2847 QETH_OUT_Q_UNLOCKED);
2848 }
2849 return 0;
2850 }
2851 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2852
2853 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2854 {
2855 switch (link_type) {
2856 case QETH_LINK_TYPE_HSTR:
2857 return 2;
2858 default:
2859 return 1;
2860 }
2861 }
2862
2863 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2864 struct qeth_ipa_cmd *cmd, __u8 command,
2865 enum qeth_prot_versions prot)
2866 {
2867 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2868 cmd->hdr.command = command;
2869 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2870 cmd->hdr.seqno = card->seqno.ipa;
2871 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2872 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2873 if (card->options.layer2)
2874 cmd->hdr.prim_version_no = 2;
2875 else
2876 cmd->hdr.prim_version_no = 1;
2877 cmd->hdr.param_count = 1;
2878 cmd->hdr.prot_version = prot;
2879 cmd->hdr.ipa_supported = 0;
2880 cmd->hdr.ipa_enabled = 0;
2881 }
2882
2883 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2884 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2885 {
2886 struct qeth_cmd_buffer *iob;
2887 struct qeth_ipa_cmd *cmd;
2888
2889 iob = qeth_get_buffer(&card->write);
2890 if (iob) {
2891 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2892 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2893 } else {
2894 dev_warn(&card->gdev->dev,
2895 "The qeth driver ran out of channel command buffers\n");
2896 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2897 dev_name(&card->gdev->dev));
2898 }
2899
2900 return iob;
2901 }
2902 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2903
2904 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2905 char prot_type)
2906 {
2907 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2908 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2909 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2910 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2911 }
2912 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2913
2914 /**
2915 * qeth_send_ipa_cmd() - send an IPA command
2916 *
2917 * See qeth_send_control_data() for explanation of the arguments.
2918 */
2919
2920 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2921 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2922 unsigned long),
2923 void *reply_param)
2924 {
2925 int rc;
2926 char prot_type;
2927
2928 QETH_CARD_TEXT(card, 4, "sendipa");
2929
2930 if (card->options.layer2)
2931 if (card->info.type == QETH_CARD_TYPE_OSN)
2932 prot_type = QETH_PROT_OSN2;
2933 else
2934 prot_type = QETH_PROT_LAYER2;
2935 else
2936 prot_type = QETH_PROT_TCPIP;
2937 qeth_prepare_ipa_cmd(card, iob, prot_type);
2938 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2939 iob, reply_cb, reply_param);
2940 if (rc == -ETIME) {
2941 qeth_clear_ipacmd_list(card);
2942 qeth_schedule_recovery(card);
2943 }
2944 return rc;
2945 }
2946 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2947
2948 static int qeth_send_startlan(struct qeth_card *card)
2949 {
2950 int rc;
2951 struct qeth_cmd_buffer *iob;
2952
2953 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2954
2955 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2956 if (!iob)
2957 return -ENOMEM;
2958 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2959 return rc;
2960 }
2961
2962 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2963 struct qeth_reply *reply, unsigned long data)
2964 {
2965 struct qeth_ipa_cmd *cmd;
2966
2967 QETH_CARD_TEXT(card, 4, "defadpcb");
2968
2969 cmd = (struct qeth_ipa_cmd *) data;
2970 if (cmd->hdr.return_code == 0)
2971 cmd->hdr.return_code =
2972 cmd->data.setadapterparms.hdr.return_code;
2973 return 0;
2974 }
2975
2976 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2977 struct qeth_reply *reply, unsigned long data)
2978 {
2979 struct qeth_ipa_cmd *cmd;
2980
2981 QETH_CARD_TEXT(card, 3, "quyadpcb");
2982
2983 cmd = (struct qeth_ipa_cmd *) data;
2984 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2985 card->info.link_type =
2986 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2987 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2988 }
2989 card->options.adp.supported_funcs =
2990 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2991 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2992 }
2993
2994 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2995 __u32 command, __u32 cmdlen)
2996 {
2997 struct qeth_cmd_buffer *iob;
2998 struct qeth_ipa_cmd *cmd;
2999
3000 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3001 QETH_PROT_IPV4);
3002 if (iob) {
3003 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3004 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3005 cmd->data.setadapterparms.hdr.command_code = command;
3006 cmd->data.setadapterparms.hdr.used_total = 1;
3007 cmd->data.setadapterparms.hdr.seq_no = 1;
3008 }
3009
3010 return iob;
3011 }
3012
3013 int qeth_query_setadapterparms(struct qeth_card *card)
3014 {
3015 int rc;
3016 struct qeth_cmd_buffer *iob;
3017
3018 QETH_CARD_TEXT(card, 3, "queryadp");
3019 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3020 sizeof(struct qeth_ipacmd_setadpparms));
3021 if (!iob)
3022 return -ENOMEM;
3023 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3024 return rc;
3025 }
3026 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3027
3028 static int qeth_query_ipassists_cb(struct qeth_card *card,
3029 struct qeth_reply *reply, unsigned long data)
3030 {
3031 struct qeth_ipa_cmd *cmd;
3032
3033 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3034
3035 cmd = (struct qeth_ipa_cmd *) data;
3036
3037 switch (cmd->hdr.return_code) {
3038 case IPA_RC_NOTSUPP:
3039 case IPA_RC_L2_UNSUPPORTED_CMD:
3040 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3041 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3042 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3043 return -0;
3044 default:
3045 if (cmd->hdr.return_code) {
3046 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3047 "rc=%d\n",
3048 dev_name(&card->gdev->dev),
3049 cmd->hdr.return_code);
3050 return 0;
3051 }
3052 }
3053
3054 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3055 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3056 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3057 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3058 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3059 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3060 } else
3061 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3062 "\n", dev_name(&card->gdev->dev));
3063 return 0;
3064 }
3065
3066 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3067 {
3068 int rc;
3069 struct qeth_cmd_buffer *iob;
3070
3071 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3072 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3073 if (!iob)
3074 return -ENOMEM;
3075 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3076 return rc;
3077 }
3078 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3079
3080 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3081 struct qeth_reply *reply, unsigned long data)
3082 {
3083 struct qeth_ipa_cmd *cmd;
3084 struct qeth_switch_info *sw_info;
3085 struct qeth_query_switch_attributes *attrs;
3086
3087 QETH_CARD_TEXT(card, 2, "qswiatcb");
3088 cmd = (struct qeth_ipa_cmd *) data;
3089 sw_info = (struct qeth_switch_info *)reply->param;
3090 if (cmd->data.setadapterparms.hdr.return_code == 0) {
3091 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3092 sw_info->capabilities = attrs->capabilities;
3093 sw_info->settings = attrs->settings;
3094 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3095 sw_info->settings);
3096 }
3097 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3098
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 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3120
3121 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3122 struct qeth_reply *reply, unsigned long data)
3123 {
3124 struct qeth_ipa_cmd *cmd;
3125 __u16 rc;
3126
3127 cmd = (struct qeth_ipa_cmd *)data;
3128 rc = cmd->hdr.return_code;
3129 if (rc)
3130 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3131 else
3132 card->info.diagass_support = cmd->data.diagass.ext;
3133 return 0;
3134 }
3135
3136 static int qeth_query_setdiagass(struct qeth_card *card)
3137 {
3138 struct qeth_cmd_buffer *iob;
3139 struct qeth_ipa_cmd *cmd;
3140
3141 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3142 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3143 if (!iob)
3144 return -ENOMEM;
3145 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3146 cmd->data.diagass.subcmd_len = 16;
3147 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3148 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3149 }
3150
3151 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3152 {
3153 unsigned long info = get_zeroed_page(GFP_KERNEL);
3154 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3155 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3156 struct ccw_dev_id ccwid;
3157 int level;
3158
3159 tid->chpid = card->info.chpid;
3160 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3161 tid->ssid = ccwid.ssid;
3162 tid->devno = ccwid.devno;
3163 if (!info)
3164 return;
3165 level = stsi(NULL, 0, 0, 0);
3166 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3167 tid->lparnr = info222->lpar_number;
3168 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3169 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3170 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3171 }
3172 free_page(info);
3173 return;
3174 }
3175
3176 static int qeth_hw_trap_cb(struct qeth_card *card,
3177 struct qeth_reply *reply, unsigned long data)
3178 {
3179 struct qeth_ipa_cmd *cmd;
3180 __u16 rc;
3181
3182 cmd = (struct qeth_ipa_cmd *)data;
3183 rc = cmd->hdr.return_code;
3184 if (rc)
3185 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3186 return 0;
3187 }
3188
3189 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3190 {
3191 struct qeth_cmd_buffer *iob;
3192 struct qeth_ipa_cmd *cmd;
3193
3194 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3195 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3196 if (!iob)
3197 return -ENOMEM;
3198 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3199 cmd->data.diagass.subcmd_len = 80;
3200 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3201 cmd->data.diagass.type = 1;
3202 cmd->data.diagass.action = action;
3203 switch (action) {
3204 case QETH_DIAGS_TRAP_ARM:
3205 cmd->data.diagass.options = 0x0003;
3206 cmd->data.diagass.ext = 0x00010000 +
3207 sizeof(struct qeth_trap_id);
3208 qeth_get_trap_id(card,
3209 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3210 break;
3211 case QETH_DIAGS_TRAP_DISARM:
3212 cmd->data.diagass.options = 0x0001;
3213 break;
3214 case QETH_DIAGS_TRAP_CAPTURE:
3215 break;
3216 }
3217 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3218 }
3219 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3220
3221 static int qeth_check_qdio_errors(struct qeth_card *card,
3222 struct qdio_buffer *buf,
3223 unsigned int qdio_error,
3224 const char *dbftext)
3225 {
3226 if (qdio_error) {
3227 QETH_CARD_TEXT(card, 2, dbftext);
3228 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3229 buf->element[15].sflags);
3230 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3231 buf->element[14].sflags);
3232 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3233 if ((buf->element[15].sflags) == 0x12) {
3234 card->stats.rx_dropped++;
3235 return 0;
3236 } else
3237 return 1;
3238 }
3239 return 0;
3240 }
3241
3242 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3243 {
3244 struct qeth_qdio_q *queue = card->qdio.in_q;
3245 struct list_head *lh;
3246 int count;
3247 int i;
3248 int rc;
3249 int newcount = 0;
3250
3251 count = (index < queue->next_buf_to_init)?
3252 card->qdio.in_buf_pool.buf_count -
3253 (queue->next_buf_to_init - index) :
3254 card->qdio.in_buf_pool.buf_count -
3255 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3256 /* only requeue at a certain threshold to avoid SIGAs */
3257 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3258 for (i = queue->next_buf_to_init;
3259 i < queue->next_buf_to_init + count; ++i) {
3260 if (qeth_init_input_buffer(card,
3261 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3262 break;
3263 } else {
3264 newcount++;
3265 }
3266 }
3267
3268 if (newcount < count) {
3269 /* we are in memory shortage so we switch back to
3270 traditional skb allocation and drop packages */
3271 atomic_set(&card->force_alloc_skb, 3);
3272 count = newcount;
3273 } else {
3274 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3275 }
3276
3277 if (!count) {
3278 i = 0;
3279 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3280 i++;
3281 if (i == card->qdio.in_buf_pool.buf_count) {
3282 QETH_CARD_TEXT(card, 2, "qsarbw");
3283 card->reclaim_index = index;
3284 schedule_delayed_work(
3285 &card->buffer_reclaim_work,
3286 QETH_RECLAIM_WORK_TIME);
3287 }
3288 return;
3289 }
3290
3291 /*
3292 * according to old code it should be avoided to requeue all
3293 * 128 buffers in order to benefit from PCI avoidance.
3294 * this function keeps at least one buffer (the buffer at
3295 * 'index') un-requeued -> this buffer is the first buffer that
3296 * will be requeued the next time
3297 */
3298 if (card->options.performance_stats) {
3299 card->perf_stats.inbound_do_qdio_cnt++;
3300 card->perf_stats.inbound_do_qdio_start_time =
3301 qeth_get_micros();
3302 }
3303 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3304 queue->next_buf_to_init, count);
3305 if (card->options.performance_stats)
3306 card->perf_stats.inbound_do_qdio_time +=
3307 qeth_get_micros() -
3308 card->perf_stats.inbound_do_qdio_start_time;
3309 if (rc) {
3310 QETH_CARD_TEXT(card, 2, "qinberr");
3311 }
3312 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3313 QDIO_MAX_BUFFERS_PER_Q;
3314 }
3315 }
3316
3317 static void qeth_buffer_reclaim_work(struct work_struct *work)
3318 {
3319 struct qeth_card *card = container_of(work, struct qeth_card,
3320 buffer_reclaim_work.work);
3321
3322 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3323 qeth_queue_input_buffer(card, card->reclaim_index);
3324 }
3325
3326 static void qeth_handle_send_error(struct qeth_card *card,
3327 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3328 {
3329 int sbalf15 = buffer->buffer->element[15].sflags;
3330
3331 QETH_CARD_TEXT(card, 6, "hdsnderr");
3332 if (card->info.type == QETH_CARD_TYPE_IQD) {
3333 if (sbalf15 == 0) {
3334 qdio_err = 0;
3335 } else {
3336 qdio_err = 1;
3337 }
3338 }
3339 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3340
3341 if (!qdio_err)
3342 return;
3343
3344 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3345 return;
3346
3347 QETH_CARD_TEXT(card, 1, "lnkfail");
3348 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3349 (u16)qdio_err, (u8)sbalf15);
3350 }
3351
3352 /**
3353 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3354 * @queue: queue to check for packing buffer
3355 *
3356 * Returns number of buffers that were prepared for flush.
3357 */
3358 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3359 {
3360 struct qeth_qdio_out_buffer *buffer;
3361
3362 buffer = queue->bufs[queue->next_buf_to_fill];
3363 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3364 (buffer->next_element_to_fill > 0)) {
3365 /* it's a packing buffer */
3366 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3367 queue->next_buf_to_fill =
3368 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3369 return 1;
3370 }
3371 return 0;
3372 }
3373
3374 /*
3375 * Switched to packing state if the number of used buffers on a queue
3376 * reaches a certain limit.
3377 */
3378 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3379 {
3380 if (!queue->do_pack) {
3381 if (atomic_read(&queue->used_buffers)
3382 >= QETH_HIGH_WATERMARK_PACK){
3383 /* switch non-PACKING -> PACKING */
3384 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3385 if (queue->card->options.performance_stats)
3386 queue->card->perf_stats.sc_dp_p++;
3387 queue->do_pack = 1;
3388 }
3389 }
3390 }
3391
3392 /*
3393 * Switches from packing to non-packing mode. If there is a packing
3394 * buffer on the queue this buffer will be prepared to be flushed.
3395 * In that case 1 is returned to inform the caller. If no buffer
3396 * has to be flushed, zero is returned.
3397 */
3398 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3399 {
3400 if (queue->do_pack) {
3401 if (atomic_read(&queue->used_buffers)
3402 <= QETH_LOW_WATERMARK_PACK) {
3403 /* switch PACKING -> non-PACKING */
3404 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3405 if (queue->card->options.performance_stats)
3406 queue->card->perf_stats.sc_p_dp++;
3407 queue->do_pack = 0;
3408 return qeth_prep_flush_pack_buffer(queue);
3409 }
3410 }
3411 return 0;
3412 }
3413
3414 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3415 int count)
3416 {
3417 struct qeth_qdio_out_buffer *buf;
3418 int rc;
3419 int i;
3420 unsigned int qdio_flags;
3421
3422 for (i = index; i < index + count; ++i) {
3423 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3424 buf = queue->bufs[bidx];
3425 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3426 SBAL_EFLAGS_LAST_ENTRY;
3427
3428 if (queue->bufstates)
3429 queue->bufstates[bidx].user = buf;
3430
3431 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3432 continue;
3433
3434 if (!queue->do_pack) {
3435 if ((atomic_read(&queue->used_buffers) >=
3436 (QETH_HIGH_WATERMARK_PACK -
3437 QETH_WATERMARK_PACK_FUZZ)) &&
3438 !atomic_read(&queue->set_pci_flags_count)) {
3439 /* it's likely that we'll go to packing
3440 * mode soon */
3441 atomic_inc(&queue->set_pci_flags_count);
3442 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3443 }
3444 } else {
3445 if (!atomic_read(&queue->set_pci_flags_count)) {
3446 /*
3447 * there's no outstanding PCI any more, so we
3448 * have to request a PCI to be sure the the PCI
3449 * will wake at some time in the future then we
3450 * can flush packed buffers that might still be
3451 * hanging around, which can happen if no
3452 * further send was requested by the stack
3453 */
3454 atomic_inc(&queue->set_pci_flags_count);
3455 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3456 }
3457 }
3458 }
3459
3460 netif_trans_update(queue->card->dev);
3461 if (queue->card->options.performance_stats) {
3462 queue->card->perf_stats.outbound_do_qdio_cnt++;
3463 queue->card->perf_stats.outbound_do_qdio_start_time =
3464 qeth_get_micros();
3465 }
3466 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3467 if (atomic_read(&queue->set_pci_flags_count))
3468 qdio_flags |= QDIO_FLAG_PCI_OUT;
3469 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3470 queue->queue_no, index, count);
3471 if (queue->card->options.performance_stats)
3472 queue->card->perf_stats.outbound_do_qdio_time +=
3473 qeth_get_micros() -
3474 queue->card->perf_stats.outbound_do_qdio_start_time;
3475 atomic_add(count, &queue->used_buffers);
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 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 && (card->dev->flags & IFF_UP))
3541 napi_schedule(&card->napi);
3542 }
3543 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3544
3545 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3546 {
3547 int rc;
3548
3549 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3550 rc = -1;
3551 goto out;
3552 } else {
3553 if (card->options.cq == cq) {
3554 rc = 0;
3555 goto out;
3556 }
3557
3558 if (card->state != CARD_STATE_DOWN &&
3559 card->state != CARD_STATE_RECOVER) {
3560 rc = -1;
3561 goto out;
3562 }
3563
3564 qeth_free_qdio_buffers(card);
3565 card->options.cq = cq;
3566 rc = 0;
3567 }
3568 out:
3569 return rc;
3570
3571 }
3572 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3573
3574
3575 static void qeth_qdio_cq_handler(struct qeth_card *card,
3576 unsigned int qdio_err,
3577 unsigned int queue, int first_element, int count) {
3578 struct qeth_qdio_q *cq = card->qdio.c_q;
3579 int i;
3580 int rc;
3581
3582 if (!qeth_is_cq(card, queue))
3583 goto out;
3584
3585 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3586 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3587 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3588
3589 if (qdio_err) {
3590 netif_stop_queue(card->dev);
3591 qeth_schedule_recovery(card);
3592 goto out;
3593 }
3594
3595 if (card->options.performance_stats) {
3596 card->perf_stats.cq_cnt++;
3597 card->perf_stats.cq_start_time = qeth_get_micros();
3598 }
3599
3600 for (i = first_element; i < first_element + count; ++i) {
3601 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3602 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3603 int e;
3604
3605 e = 0;
3606 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3607 buffer->element[e].addr) {
3608 unsigned long phys_aob_addr;
3609
3610 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3611 qeth_qdio_handle_aob(card, phys_aob_addr);
3612 buffer->element[e].addr = NULL;
3613 buffer->element[e].eflags = 0;
3614 buffer->element[e].sflags = 0;
3615 buffer->element[e].length = 0;
3616
3617 ++e;
3618 }
3619
3620 buffer->element[15].eflags = 0;
3621 buffer->element[15].sflags = 0;
3622 }
3623 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3624 card->qdio.c_q->next_buf_to_init,
3625 count);
3626 if (rc) {
3627 dev_warn(&card->gdev->dev,
3628 "QDIO reported an error, rc=%i\n", rc);
3629 QETH_CARD_TEXT(card, 2, "qcqherr");
3630 }
3631 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3632 + count) % QDIO_MAX_BUFFERS_PER_Q;
3633
3634 netif_wake_queue(card->dev);
3635
3636 if (card->options.performance_stats) {
3637 int delta_t = qeth_get_micros();
3638 delta_t -= card->perf_stats.cq_start_time;
3639 card->perf_stats.cq_time += delta_t;
3640 }
3641 out:
3642 return;
3643 }
3644
3645 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3646 unsigned int queue, int first_elem, int count,
3647 unsigned long card_ptr)
3648 {
3649 struct qeth_card *card = (struct qeth_card *)card_ptr;
3650
3651 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3652 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3653
3654 if (qeth_is_cq(card, queue))
3655 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3656 else if (qdio_err)
3657 qeth_schedule_recovery(card);
3658
3659
3660 }
3661 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3662
3663 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3664 unsigned int qdio_error, int __queue, int first_element,
3665 int count, unsigned long card_ptr)
3666 {
3667 struct qeth_card *card = (struct qeth_card *) card_ptr;
3668 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3669 struct qeth_qdio_out_buffer *buffer;
3670 int i;
3671
3672 QETH_CARD_TEXT(card, 6, "qdouhdl");
3673 if (qdio_error & QDIO_ERROR_FATAL) {
3674 QETH_CARD_TEXT(card, 2, "achkcond");
3675 netif_stop_queue(card->dev);
3676 qeth_schedule_recovery(card);
3677 return;
3678 }
3679 if (card->options.performance_stats) {
3680 card->perf_stats.outbound_handler_cnt++;
3681 card->perf_stats.outbound_handler_start_time =
3682 qeth_get_micros();
3683 }
3684 for (i = first_element; i < (first_element + count); ++i) {
3685 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3686 buffer = queue->bufs[bidx];
3687 qeth_handle_send_error(card, buffer, qdio_error);
3688
3689 if (queue->bufstates &&
3690 (queue->bufstates[bidx].flags &
3691 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3692 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3693
3694 if (atomic_cmpxchg(&buffer->state,
3695 QETH_QDIO_BUF_PRIMED,
3696 QETH_QDIO_BUF_PENDING) ==
3697 QETH_QDIO_BUF_PRIMED) {
3698 qeth_notify_skbs(queue, buffer,
3699 TX_NOTIFY_PENDING);
3700 }
3701 buffer->aob = queue->bufstates[bidx].aob;
3702 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3703 QETH_CARD_TEXT(queue->card, 5, "aob");
3704 QETH_CARD_TEXT_(queue->card, 5, "%lx",
3705 virt_to_phys(buffer->aob));
3706 if (qeth_init_qdio_out_buf(queue, bidx)) {
3707 QETH_CARD_TEXT(card, 2, "outofbuf");
3708 qeth_schedule_recovery(card);
3709 }
3710 } else {
3711 if (card->options.cq == QETH_CQ_ENABLED) {
3712 enum iucv_tx_notify n;
3713
3714 n = qeth_compute_cq_notification(
3715 buffer->buffer->element[15].sflags, 0);
3716 qeth_notify_skbs(queue, buffer, n);
3717 }
3718
3719 qeth_clear_output_buffer(queue, buffer,
3720 QETH_QDIO_BUF_EMPTY);
3721 }
3722 qeth_cleanup_handled_pending(queue, bidx, 0);
3723 }
3724 atomic_sub(count, &queue->used_buffers);
3725 /* check if we need to do something on this outbound queue */
3726 if (card->info.type != QETH_CARD_TYPE_IQD)
3727 qeth_check_outbound_queue(queue);
3728
3729 netif_wake_queue(queue->card->dev);
3730 if (card->options.performance_stats)
3731 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3732 card->perf_stats.outbound_handler_start_time;
3733 }
3734 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3735
3736 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3737 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3738 {
3739 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3740 return 2;
3741 return queue_num;
3742 }
3743
3744 /**
3745 * Note: Function assumes that we have 4 outbound queues.
3746 */
3747 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3748 int ipv, int cast_type)
3749 {
3750 __be16 *tci;
3751 u8 tos;
3752
3753 if (cast_type && card->info.is_multicast_different)
3754 return card->info.is_multicast_different &
3755 (card->qdio.no_out_queues - 1);
3756
3757 switch (card->qdio.do_prio_queueing) {
3758 case QETH_PRIO_Q_ING_TOS:
3759 case QETH_PRIO_Q_ING_PREC:
3760 switch (ipv) {
3761 case 4:
3762 tos = ipv4_get_dsfield(ip_hdr(skb));
3763 break;
3764 case 6:
3765 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3766 break;
3767 default:
3768 return card->qdio.default_out_queue;
3769 }
3770 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3771 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3772 if (tos & IPTOS_MINCOST)
3773 return qeth_cut_iqd_prio(card, 3);
3774 if (tos & IPTOS_RELIABILITY)
3775 return 2;
3776 if (tos & IPTOS_THROUGHPUT)
3777 return 1;
3778 if (tos & IPTOS_LOWDELAY)
3779 return 0;
3780 break;
3781 case QETH_PRIO_Q_ING_SKB:
3782 if (skb->priority > 5)
3783 return 0;
3784 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3785 case QETH_PRIO_Q_ING_VLAN:
3786 tci = &((struct ethhdr *)skb->data)->h_proto;
3787 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3788 return qeth_cut_iqd_prio(card,
3789 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3790 break;
3791 default:
3792 break;
3793 }
3794 return card->qdio.default_out_queue;
3795 }
3796 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3797
3798 /**
3799 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3800 * @skb: SKB address
3801 *
3802 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3803 * fragmented part of the SKB. Returns zero for linear SKB.
3804 */
3805 int qeth_get_elements_for_frags(struct sk_buff *skb)
3806 {
3807 int cnt, elements = 0;
3808
3809 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3810 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3811
3812 elements += qeth_get_elements_for_range(
3813 (addr_t)skb_frag_address(frag),
3814 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3815 }
3816 return elements;
3817 }
3818 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3819
3820 /**
3821 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags.
3822 * @card: qeth card structure, to check max. elems.
3823 * @skb: SKB address
3824 * @extra_elems: extra elems needed, to check against max.
3825 * @data_offset: range starts at skb->data + data_offset
3826 *
3827 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3828 * skb data, including linear part and fragments. Checks if the result plus
3829 * extra_elems fits under the limit for the card. Returns 0 if it does not.
3830 * Note: extra_elems is not included in the returned result.
3831 */
3832 int qeth_get_elements_no(struct qeth_card *card,
3833 struct sk_buff *skb, int extra_elems, int data_offset)
3834 {
3835 int elements = qeth_get_elements_for_range(
3836 (addr_t)skb->data + data_offset,
3837 (addr_t)skb->data + skb_headlen(skb)) +
3838 qeth_get_elements_for_frags(skb);
3839
3840 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3841 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3842 "(Number=%d / Length=%d). Discarded.\n",
3843 elements + extra_elems, skb->len);
3844 return 0;
3845 }
3846 return elements;
3847 }
3848 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3849
3850 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3851 {
3852 int hroom, inpage, rest;
3853
3854 if (((unsigned long)skb->data & PAGE_MASK) !=
3855 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3856 hroom = skb_headroom(skb);
3857 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3858 rest = len - inpage;
3859 if (rest > hroom)
3860 return 1;
3861 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3862 skb->data -= rest;
3863 skb->tail -= rest;
3864 *hdr = (struct qeth_hdr *)skb->data;
3865 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3866 }
3867 return 0;
3868 }
3869 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3870
3871 /**
3872 * qeth_push_hdr() - push a qeth_hdr onto an skb.
3873 * @skb: skb that the qeth_hdr should be pushed onto.
3874 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3875 * it contains a valid pointer to a qeth_hdr.
3876 * @len: length of the hdr that needs to be pushed on.
3877 *
3878 * Returns the pushed length. If the header can't be pushed on
3879 * (eg. because it would cross a page boundary), it is allocated from
3880 * the cache instead and 0 is returned.
3881 * Error to create the hdr is indicated by returning with < 0.
3882 */
3883 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len)
3884 {
3885 if (skb_headroom(skb) >= len &&
3886 qeth_get_elements_for_range((addr_t)skb->data - len,
3887 (addr_t)skb->data) == 1) {
3888 *hdr = skb_push(skb, len);
3889 return len;
3890 }
3891 /* fall back */
3892 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3893 if (!*hdr)
3894 return -ENOMEM;
3895 return 0;
3896 }
3897 EXPORT_SYMBOL_GPL(qeth_push_hdr);
3898
3899 static void __qeth_fill_buffer(struct sk_buff *skb,
3900 struct qeth_qdio_out_buffer *buf,
3901 bool is_first_elem, unsigned int offset)
3902 {
3903 struct qdio_buffer *buffer = buf->buffer;
3904 int element = buf->next_element_to_fill;
3905 int length = skb_headlen(skb) - offset;
3906 char *data = skb->data + offset;
3907 int length_here, cnt;
3908
3909 /* map linear part into buffer element(s) */
3910 while (length > 0) {
3911 /* length_here is the remaining amount of data in this page */
3912 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3913 if (length < length_here)
3914 length_here = length;
3915
3916 buffer->element[element].addr = data;
3917 buffer->element[element].length = length_here;
3918 length -= length_here;
3919 if (is_first_elem) {
3920 is_first_elem = false;
3921 if (length || skb_is_nonlinear(skb))
3922 /* skb needs additional elements */
3923 buffer->element[element].eflags =
3924 SBAL_EFLAGS_FIRST_FRAG;
3925 else
3926 buffer->element[element].eflags = 0;
3927 } else {
3928 buffer->element[element].eflags =
3929 SBAL_EFLAGS_MIDDLE_FRAG;
3930 }
3931 data += length_here;
3932 element++;
3933 }
3934
3935 /* map page frags into buffer element(s) */
3936 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3937 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3938
3939 data = skb_frag_address(frag);
3940 length = skb_frag_size(frag);
3941 while (length > 0) {
3942 length_here = PAGE_SIZE -
3943 ((unsigned long) data % PAGE_SIZE);
3944 if (length < length_here)
3945 length_here = length;
3946
3947 buffer->element[element].addr = data;
3948 buffer->element[element].length = length_here;
3949 buffer->element[element].eflags =
3950 SBAL_EFLAGS_MIDDLE_FRAG;
3951 length -= length_here;
3952 data += length_here;
3953 element++;
3954 }
3955 }
3956
3957 if (buffer->element[element - 1].eflags)
3958 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3959 buf->next_element_to_fill = element;
3960 }
3961
3962 /**
3963 * qeth_fill_buffer() - map skb into an output buffer
3964 * @queue: QDIO queue to submit the buffer on
3965 * @buf: buffer to transport the skb
3966 * @skb: skb to map into the buffer
3967 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
3968 * from qeth_core_header_cache.
3969 * @offset: when mapping the skb, start at skb->data + offset
3970 * @hd_len: if > 0, build a dedicated header element of this size
3971 */
3972 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3973 struct qeth_qdio_out_buffer *buf,
3974 struct sk_buff *skb, struct qeth_hdr *hdr,
3975 unsigned int offset, unsigned int hd_len)
3976 {
3977 struct qdio_buffer *buffer = buf->buffer;
3978 bool is_first_elem = true;
3979 int flush_cnt = 0;
3980
3981 refcount_inc(&skb->users);
3982 skb_queue_tail(&buf->skb_list, skb);
3983
3984 /* build dedicated header element */
3985 if (hd_len) {
3986 int element = buf->next_element_to_fill;
3987 is_first_elem = false;
3988
3989 buffer->element[element].addr = hdr;
3990 buffer->element[element].length = hd_len;
3991 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3992 /* remember to free cache-allocated qeth_hdr: */
3993 buf->is_header[element] = ((void *)hdr != skb->data);
3994 buf->next_element_to_fill++;
3995 }
3996
3997 __qeth_fill_buffer(skb, buf, is_first_elem, offset);
3998
3999 if (!queue->do_pack) {
4000 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4001 /* set state to PRIMED -> will be flushed */
4002 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4003 flush_cnt = 1;
4004 } else {
4005 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4006 if (queue->card->options.performance_stats)
4007 queue->card->perf_stats.skbs_sent_pack++;
4008 if (buf->next_element_to_fill >=
4009 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4010 /*
4011 * packed buffer if full -> set state PRIMED
4012 * -> will be flushed
4013 */
4014 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4015 flush_cnt = 1;
4016 }
4017 }
4018 return flush_cnt;
4019 }
4020
4021 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4022 struct qeth_hdr *hdr, unsigned int offset,
4023 unsigned int hd_len)
4024 {
4025 int index = queue->next_buf_to_fill;
4026 struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
4027
4028 /*
4029 * check if buffer is empty to make sure that we do not 'overtake'
4030 * ourselves and try to fill a buffer that is already primed
4031 */
4032 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4033 return -EBUSY;
4034 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
4035 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4036 qeth_flush_buffers(queue, index, 1);
4037 return 0;
4038 }
4039 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4040
4041 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4042 struct sk_buff *skb, struct qeth_hdr *hdr,
4043 unsigned int offset, unsigned int hd_len,
4044 int elements_needed)
4045 {
4046 struct qeth_qdio_out_buffer *buffer;
4047 int start_index;
4048 int flush_count = 0;
4049 int do_pack = 0;
4050 int tmp;
4051 int rc = 0;
4052
4053 /* spin until we get the queue ... */
4054 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4055 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4056 start_index = queue->next_buf_to_fill;
4057 buffer = queue->bufs[queue->next_buf_to_fill];
4058 /*
4059 * check if buffer is empty to make sure that we do not 'overtake'
4060 * ourselves and try to fill a buffer that is already primed
4061 */
4062 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4063 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4064 return -EBUSY;
4065 }
4066 /* check if we need to switch packing state of this queue */
4067 qeth_switch_to_packing_if_needed(queue);
4068 if (queue->do_pack) {
4069 do_pack = 1;
4070 /* does packet fit in current buffer? */
4071 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4072 buffer->next_element_to_fill) < elements_needed) {
4073 /* ... no -> set state PRIMED */
4074 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4075 flush_count++;
4076 queue->next_buf_to_fill =
4077 (queue->next_buf_to_fill + 1) %
4078 QDIO_MAX_BUFFERS_PER_Q;
4079 buffer = queue->bufs[queue->next_buf_to_fill];
4080 /* we did a step forward, so check buffer state
4081 * again */
4082 if (atomic_read(&buffer->state) !=
4083 QETH_QDIO_BUF_EMPTY) {
4084 qeth_flush_buffers(queue, start_index,
4085 flush_count);
4086 atomic_set(&queue->state,
4087 QETH_OUT_Q_UNLOCKED);
4088 rc = -EBUSY;
4089 goto out;
4090 }
4091 }
4092 }
4093 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4094 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4095 QDIO_MAX_BUFFERS_PER_Q;
4096 flush_count += tmp;
4097 if (flush_count)
4098 qeth_flush_buffers(queue, start_index, flush_count);
4099 else if (!atomic_read(&queue->set_pci_flags_count))
4100 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4101 /*
4102 * queue->state will go from LOCKED -> UNLOCKED or from
4103 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4104 * (switch packing state or flush buffer to get another pci flag out).
4105 * In that case we will enter this loop
4106 */
4107 while (atomic_dec_return(&queue->state)) {
4108 start_index = queue->next_buf_to_fill;
4109 /* check if we can go back to non-packing state */
4110 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4111 /*
4112 * check if we need to flush a packing buffer to get a pci
4113 * flag out on the queue
4114 */
4115 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4116 tmp = qeth_prep_flush_pack_buffer(queue);
4117 if (tmp) {
4118 qeth_flush_buffers(queue, start_index, tmp);
4119 flush_count += tmp;
4120 }
4121 }
4122 out:
4123 /* at this point the queue is UNLOCKED again */
4124 if (queue->card->options.performance_stats && do_pack)
4125 queue->card->perf_stats.bufs_sent_pack += flush_count;
4126
4127 return rc;
4128 }
4129 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4130
4131 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4132 struct qeth_reply *reply, unsigned long data)
4133 {
4134 struct qeth_ipa_cmd *cmd;
4135 struct qeth_ipacmd_setadpparms *setparms;
4136
4137 QETH_CARD_TEXT(card, 4, "prmadpcb");
4138
4139 cmd = (struct qeth_ipa_cmd *) data;
4140 setparms = &(cmd->data.setadapterparms);
4141
4142 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4143 if (cmd->hdr.return_code) {
4144 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4145 setparms->data.mode = SET_PROMISC_MODE_OFF;
4146 }
4147 card->info.promisc_mode = setparms->data.mode;
4148 return 0;
4149 }
4150
4151 void qeth_setadp_promisc_mode(struct qeth_card *card)
4152 {
4153 enum qeth_ipa_promisc_modes mode;
4154 struct net_device *dev = card->dev;
4155 struct qeth_cmd_buffer *iob;
4156 struct qeth_ipa_cmd *cmd;
4157
4158 QETH_CARD_TEXT(card, 4, "setprom");
4159
4160 if (((dev->flags & IFF_PROMISC) &&
4161 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4162 (!(dev->flags & IFF_PROMISC) &&
4163 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4164 return;
4165 mode = SET_PROMISC_MODE_OFF;
4166 if (dev->flags & IFF_PROMISC)
4167 mode = SET_PROMISC_MODE_ON;
4168 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4169
4170 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4171 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4172 if (!iob)
4173 return;
4174 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4175 cmd->data.setadapterparms.data.mode = mode;
4176 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4177 }
4178 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4179
4180 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4181 {
4182 struct qeth_card *card;
4183 char dbf_text[15];
4184
4185 card = dev->ml_priv;
4186
4187 QETH_CARD_TEXT(card, 4, "chgmtu");
4188 sprintf(dbf_text, "%8x", new_mtu);
4189 QETH_CARD_TEXT(card, 4, dbf_text);
4190
4191 if (!qeth_mtu_is_valid(card, new_mtu))
4192 return -EINVAL;
4193 dev->mtu = new_mtu;
4194 return 0;
4195 }
4196 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4197
4198 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4199 {
4200 struct qeth_card *card;
4201
4202 card = dev->ml_priv;
4203
4204 QETH_CARD_TEXT(card, 5, "getstat");
4205
4206 return &card->stats;
4207 }
4208 EXPORT_SYMBOL_GPL(qeth_get_stats);
4209
4210 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4211 struct qeth_reply *reply, unsigned long data)
4212 {
4213 struct qeth_ipa_cmd *cmd;
4214
4215 QETH_CARD_TEXT(card, 4, "chgmaccb");
4216
4217 cmd = (struct qeth_ipa_cmd *) data;
4218 if (!card->options.layer2 ||
4219 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4220 memcpy(card->dev->dev_addr,
4221 &cmd->data.setadapterparms.data.change_addr.addr,
4222 OSA_ADDR_LEN);
4223 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4224 }
4225 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4226 return 0;
4227 }
4228
4229 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4230 {
4231 int rc;
4232 struct qeth_cmd_buffer *iob;
4233 struct qeth_ipa_cmd *cmd;
4234
4235 QETH_CARD_TEXT(card, 4, "chgmac");
4236
4237 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4238 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4239 sizeof(struct qeth_change_addr));
4240 if (!iob)
4241 return -ENOMEM;
4242 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4243 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4244 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4245 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4246 card->dev->dev_addr, OSA_ADDR_LEN);
4247 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4248 NULL);
4249 return rc;
4250 }
4251 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4252
4253 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4254 struct qeth_reply *reply, unsigned long data)
4255 {
4256 struct qeth_ipa_cmd *cmd;
4257 struct qeth_set_access_ctrl *access_ctrl_req;
4258 int fallback = *(int *)reply->param;
4259
4260 QETH_CARD_TEXT(card, 4, "setaccb");
4261
4262 cmd = (struct qeth_ipa_cmd *) data;
4263 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4264 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4265 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4266 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4267 cmd->data.setadapterparms.hdr.return_code);
4268 if (cmd->data.setadapterparms.hdr.return_code !=
4269 SET_ACCESS_CTRL_RC_SUCCESS)
4270 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4271 card->gdev->dev.kobj.name,
4272 access_ctrl_req->subcmd_code,
4273 cmd->data.setadapterparms.hdr.return_code);
4274 switch (cmd->data.setadapterparms.hdr.return_code) {
4275 case SET_ACCESS_CTRL_RC_SUCCESS:
4276 if (card->options.isolation == ISOLATION_MODE_NONE) {
4277 dev_info(&card->gdev->dev,
4278 "QDIO data connection isolation is deactivated\n");
4279 } else {
4280 dev_info(&card->gdev->dev,
4281 "QDIO data connection isolation is activated\n");
4282 }
4283 break;
4284 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4285 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4286 "deactivated\n", dev_name(&card->gdev->dev));
4287 if (fallback)
4288 card->options.isolation = card->options.prev_isolation;
4289 break;
4290 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4291 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4292 " activated\n", dev_name(&card->gdev->dev));
4293 if (fallback)
4294 card->options.isolation = card->options.prev_isolation;
4295 break;
4296 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4297 dev_err(&card->gdev->dev, "Adapter does not "
4298 "support QDIO data connection isolation\n");
4299 break;
4300 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4301 dev_err(&card->gdev->dev,
4302 "Adapter is dedicated. "
4303 "QDIO data connection isolation not supported\n");
4304 if (fallback)
4305 card->options.isolation = card->options.prev_isolation;
4306 break;
4307 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4308 dev_err(&card->gdev->dev,
4309 "TSO does not permit QDIO data connection isolation\n");
4310 if (fallback)
4311 card->options.isolation = card->options.prev_isolation;
4312 break;
4313 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4314 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4315 "support reflective relay mode\n");
4316 if (fallback)
4317 card->options.isolation = card->options.prev_isolation;
4318 break;
4319 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4320 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4321 "enabled at the adjacent switch port");
4322 if (fallback)
4323 card->options.isolation = card->options.prev_isolation;
4324 break;
4325 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4326 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4327 "at the adjacent switch failed\n");
4328 break;
4329 default:
4330 /* this should never happen */
4331 if (fallback)
4332 card->options.isolation = card->options.prev_isolation;
4333 break;
4334 }
4335 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4336 return 0;
4337 }
4338
4339 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4340 enum qeth_ipa_isolation_modes isolation, int fallback)
4341 {
4342 int rc;
4343 struct qeth_cmd_buffer *iob;
4344 struct qeth_ipa_cmd *cmd;
4345 struct qeth_set_access_ctrl *access_ctrl_req;
4346
4347 QETH_CARD_TEXT(card, 4, "setacctl");
4348
4349 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4350 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4351
4352 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4353 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4354 sizeof(struct qeth_set_access_ctrl));
4355 if (!iob)
4356 return -ENOMEM;
4357 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4358 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4359 access_ctrl_req->subcmd_code = isolation;
4360
4361 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4362 &fallback);
4363 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4364 return rc;
4365 }
4366
4367 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4368 {
4369 int rc = 0;
4370
4371 QETH_CARD_TEXT(card, 4, "setactlo");
4372
4373 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4374 card->info.type == QETH_CARD_TYPE_OSX) &&
4375 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4376 rc = qeth_setadpparms_set_access_ctrl(card,
4377 card->options.isolation, fallback);
4378 if (rc) {
4379 QETH_DBF_MESSAGE(3,
4380 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4381 card->gdev->dev.kobj.name,
4382 rc);
4383 rc = -EOPNOTSUPP;
4384 }
4385 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4386 card->options.isolation = ISOLATION_MODE_NONE;
4387
4388 dev_err(&card->gdev->dev, "Adapter does not "
4389 "support QDIO data connection isolation\n");
4390 rc = -EOPNOTSUPP;
4391 }
4392 return rc;
4393 }
4394 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4395
4396 void qeth_tx_timeout(struct net_device *dev)
4397 {
4398 struct qeth_card *card;
4399
4400 card = dev->ml_priv;
4401 QETH_CARD_TEXT(card, 4, "txtimeo");
4402 card->stats.tx_errors++;
4403 qeth_schedule_recovery(card);
4404 }
4405 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4406
4407 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4408 {
4409 struct qeth_card *card = dev->ml_priv;
4410 int rc = 0;
4411
4412 switch (regnum) {
4413 case MII_BMCR: /* Basic mode control register */
4414 rc = BMCR_FULLDPLX;
4415 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4416 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4417 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4418 rc |= BMCR_SPEED100;
4419 break;
4420 case MII_BMSR: /* Basic mode status register */
4421 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4422 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4423 BMSR_100BASE4;
4424 break;
4425 case MII_PHYSID1: /* PHYS ID 1 */
4426 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4427 dev->dev_addr[2];
4428 rc = (rc >> 5) & 0xFFFF;
4429 break;
4430 case MII_PHYSID2: /* PHYS ID 2 */
4431 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4432 break;
4433 case MII_ADVERTISE: /* Advertisement control reg */
4434 rc = ADVERTISE_ALL;
4435 break;
4436 case MII_LPA: /* Link partner ability reg */
4437 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4438 LPA_100BASE4 | LPA_LPACK;
4439 break;
4440 case MII_EXPANSION: /* Expansion register */
4441 break;
4442 case MII_DCOUNTER: /* disconnect counter */
4443 break;
4444 case MII_FCSCOUNTER: /* false carrier counter */
4445 break;
4446 case MII_NWAYTEST: /* N-way auto-neg test register */
4447 break;
4448 case MII_RERRCOUNTER: /* rx error counter */
4449 rc = card->stats.rx_errors;
4450 break;
4451 case MII_SREVISION: /* silicon revision */
4452 break;
4453 case MII_RESV1: /* reserved 1 */
4454 break;
4455 case MII_LBRERROR: /* loopback, rx, bypass error */
4456 break;
4457 case MII_PHYADDR: /* physical address */
4458 break;
4459 case MII_RESV2: /* reserved 2 */
4460 break;
4461 case MII_TPISTATUS: /* TPI status for 10mbps */
4462 break;
4463 case MII_NCONFIG: /* network interface config */
4464 break;
4465 default:
4466 break;
4467 }
4468 return rc;
4469 }
4470
4471 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4472 struct qeth_cmd_buffer *iob, int len,
4473 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4474 unsigned long),
4475 void *reply_param)
4476 {
4477 u16 s1, s2;
4478
4479 QETH_CARD_TEXT(card, 4, "sendsnmp");
4480
4481 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4482 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4483 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4484 /* adjust PDU length fields in IPA_PDU_HEADER */
4485 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4486 s2 = (u32) len;
4487 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4488 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4489 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4490 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4491 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4492 reply_cb, reply_param);
4493 }
4494
4495 static int qeth_snmp_command_cb(struct qeth_card *card,
4496 struct qeth_reply *reply, unsigned long sdata)
4497 {
4498 struct qeth_ipa_cmd *cmd;
4499 struct qeth_arp_query_info *qinfo;
4500 struct qeth_snmp_cmd *snmp;
4501 unsigned char *data;
4502 __u16 data_len;
4503
4504 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4505
4506 cmd = (struct qeth_ipa_cmd *) sdata;
4507 data = (unsigned char *)((char *)cmd - reply->offset);
4508 qinfo = (struct qeth_arp_query_info *) reply->param;
4509 snmp = &cmd->data.setadapterparms.data.snmp;
4510
4511 if (cmd->hdr.return_code) {
4512 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4513 return 0;
4514 }
4515 if (cmd->data.setadapterparms.hdr.return_code) {
4516 cmd->hdr.return_code =
4517 cmd->data.setadapterparms.hdr.return_code;
4518 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4519 return 0;
4520 }
4521 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4522 if (cmd->data.setadapterparms.hdr.seq_no == 1)
4523 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4524 else
4525 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4526
4527 /* check if there is enough room in userspace */
4528 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4529 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4530 cmd->hdr.return_code = IPA_RC_ENOMEM;
4531 return 0;
4532 }
4533 QETH_CARD_TEXT_(card, 4, "snore%i",
4534 cmd->data.setadapterparms.hdr.used_total);
4535 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4536 cmd->data.setadapterparms.hdr.seq_no);
4537 /*copy entries to user buffer*/
4538 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4539 memcpy(qinfo->udata + qinfo->udata_offset,
4540 (char *)snmp,
4541 data_len + offsetof(struct qeth_snmp_cmd, data));
4542 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4543 } else {
4544 memcpy(qinfo->udata + qinfo->udata_offset,
4545 (char *)&snmp->request, data_len);
4546 }
4547 qinfo->udata_offset += data_len;
4548 /* check if all replies received ... */
4549 QETH_CARD_TEXT_(card, 4, "srtot%i",
4550 cmd->data.setadapterparms.hdr.used_total);
4551 QETH_CARD_TEXT_(card, 4, "srseq%i",
4552 cmd->data.setadapterparms.hdr.seq_no);
4553 if (cmd->data.setadapterparms.hdr.seq_no <
4554 cmd->data.setadapterparms.hdr.used_total)
4555 return 1;
4556 return 0;
4557 }
4558
4559 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4560 {
4561 struct qeth_cmd_buffer *iob;
4562 struct qeth_ipa_cmd *cmd;
4563 struct qeth_snmp_ureq *ureq;
4564 unsigned int req_len;
4565 struct qeth_arp_query_info qinfo = {0, };
4566 int rc = 0;
4567
4568 QETH_CARD_TEXT(card, 3, "snmpcmd");
4569
4570 if (card->info.guestlan)
4571 return -EOPNOTSUPP;
4572
4573 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4574 (!card->options.layer2)) {
4575 return -EOPNOTSUPP;
4576 }
4577 /* skip 4 bytes (data_len struct member) to get req_len */
4578 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4579 return -EFAULT;
4580 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4581 sizeof(struct qeth_ipacmd_hdr) -
4582 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4583 return -EINVAL;
4584 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4585 if (IS_ERR(ureq)) {
4586 QETH_CARD_TEXT(card, 2, "snmpnome");
4587 return PTR_ERR(ureq);
4588 }
4589 qinfo.udata_len = ureq->hdr.data_len;
4590 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4591 if (!qinfo.udata) {
4592 kfree(ureq);
4593 return -ENOMEM;
4594 }
4595 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4596
4597 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4598 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4599 if (!iob) {
4600 rc = -ENOMEM;
4601 goto out;
4602 }
4603 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4604 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4605 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4606 qeth_snmp_command_cb, (void *)&qinfo);
4607 if (rc)
4608 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4609 QETH_CARD_IFNAME(card), rc);
4610 else {
4611 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4612 rc = -EFAULT;
4613 }
4614 out:
4615 kfree(ureq);
4616 kfree(qinfo.udata);
4617 return rc;
4618 }
4619
4620 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4621 struct qeth_reply *reply, unsigned long data)
4622 {
4623 struct qeth_ipa_cmd *cmd;
4624 struct qeth_qoat_priv *priv;
4625 char *resdata;
4626 int resdatalen;
4627
4628 QETH_CARD_TEXT(card, 3, "qoatcb");
4629
4630 cmd = (struct qeth_ipa_cmd *)data;
4631 priv = (struct qeth_qoat_priv *)reply->param;
4632 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4633 resdata = (char *)data + 28;
4634
4635 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4636 cmd->hdr.return_code = IPA_RC_FFFF;
4637 return 0;
4638 }
4639
4640 memcpy((priv->buffer + priv->response_len), resdata,
4641 resdatalen);
4642 priv->response_len += resdatalen;
4643
4644 if (cmd->data.setadapterparms.hdr.seq_no <
4645 cmd->data.setadapterparms.hdr.used_total)
4646 return 1;
4647 return 0;
4648 }
4649
4650 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4651 {
4652 int rc = 0;
4653 struct qeth_cmd_buffer *iob;
4654 struct qeth_ipa_cmd *cmd;
4655 struct qeth_query_oat *oat_req;
4656 struct qeth_query_oat_data oat_data;
4657 struct qeth_qoat_priv priv;
4658 void __user *tmp;
4659
4660 QETH_CARD_TEXT(card, 3, "qoatcmd");
4661
4662 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4663 rc = -EOPNOTSUPP;
4664 goto out;
4665 }
4666
4667 if (copy_from_user(&oat_data, udata,
4668 sizeof(struct qeth_query_oat_data))) {
4669 rc = -EFAULT;
4670 goto out;
4671 }
4672
4673 priv.buffer_len = oat_data.buffer_len;
4674 priv.response_len = 0;
4675 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL);
4676 if (!priv.buffer) {
4677 rc = -ENOMEM;
4678 goto out;
4679 }
4680
4681 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4682 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4683 sizeof(struct qeth_query_oat));
4684 if (!iob) {
4685 rc = -ENOMEM;
4686 goto out_free;
4687 }
4688 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4689 oat_req = &cmd->data.setadapterparms.data.query_oat;
4690 oat_req->subcmd_code = oat_data.command;
4691
4692 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4693 &priv);
4694 if (!rc) {
4695 if (is_compat_task())
4696 tmp = compat_ptr(oat_data.ptr);
4697 else
4698 tmp = (void __user *)(unsigned long)oat_data.ptr;
4699
4700 if (copy_to_user(tmp, priv.buffer,
4701 priv.response_len)) {
4702 rc = -EFAULT;
4703 goto out_free;
4704 }
4705
4706 oat_data.response_len = priv.response_len;
4707
4708 if (copy_to_user(udata, &oat_data,
4709 sizeof(struct qeth_query_oat_data)))
4710 rc = -EFAULT;
4711 } else
4712 if (rc == IPA_RC_FFFF)
4713 rc = -EFAULT;
4714
4715 out_free:
4716 kfree(priv.buffer);
4717 out:
4718 return rc;
4719 }
4720
4721 static int qeth_query_card_info_cb(struct qeth_card *card,
4722 struct qeth_reply *reply, unsigned long data)
4723 {
4724 struct qeth_ipa_cmd *cmd;
4725 struct qeth_query_card_info *card_info;
4726 struct carrier_info *carrier_info;
4727
4728 QETH_CARD_TEXT(card, 2, "qcrdincb");
4729 carrier_info = (struct carrier_info *)reply->param;
4730 cmd = (struct qeth_ipa_cmd *)data;
4731 card_info = &cmd->data.setadapterparms.data.card_info;
4732 if (cmd->data.setadapterparms.hdr.return_code == 0) {
4733 carrier_info->card_type = card_info->card_type;
4734 carrier_info->port_mode = card_info->port_mode;
4735 carrier_info->port_speed = card_info->port_speed;
4736 }
4737
4738 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4739 return 0;
4740 }
4741
4742 static int qeth_query_card_info(struct qeth_card *card,
4743 struct carrier_info *carrier_info)
4744 {
4745 struct qeth_cmd_buffer *iob;
4746
4747 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4748 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4749 return -EOPNOTSUPP;
4750 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4751 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4752 if (!iob)
4753 return -ENOMEM;
4754 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4755 (void *)carrier_info);
4756 }
4757
4758 /**
4759 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4760 * @card: pointer to a qeth_card
4761 *
4762 * Returns
4763 * 0, if a MAC address has been set for the card's netdevice
4764 * a return code, for various error conditions
4765 */
4766 int qeth_vm_request_mac(struct qeth_card *card)
4767 {
4768 struct diag26c_mac_resp *response;
4769 struct diag26c_mac_req *request;
4770 struct ccw_dev_id id;
4771 int rc;
4772
4773 QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4774
4775 if (!card->dev)
4776 return -ENODEV;
4777
4778 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4779 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4780 if (!request || !response) {
4781 rc = -ENOMEM;
4782 goto out;
4783 }
4784
4785 ccw_device_get_id(CARD_DDEV(card), &id);
4786 request->resp_buf_len = sizeof(*response);
4787 request->resp_version = DIAG26C_VERSION2;
4788 request->op_code = DIAG26C_GET_MAC;
4789 request->devno = id.devno;
4790
4791 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4792 if (rc)
4793 goto out;
4794
4795 if (request->resp_buf_len < sizeof(*response) ||
4796 response->version != request->resp_version) {
4797 rc = -EIO;
4798 QETH_DBF_TEXT(SETUP, 2, "badresp");
4799 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4800 sizeof(request->resp_buf_len));
4801 } else if (!is_valid_ether_addr(response->mac)) {
4802 rc = -EINVAL;
4803 QETH_DBF_TEXT(SETUP, 2, "badmac");
4804 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4805 } else {
4806 ether_addr_copy(card->dev->dev_addr, response->mac);
4807 }
4808
4809 out:
4810 kfree(response);
4811 kfree(request);
4812 return rc;
4813 }
4814 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4815
4816 static int qeth_get_qdio_q_format(struct qeth_card *card)
4817 {
4818 if (card->info.type == QETH_CARD_TYPE_IQD)
4819 return QDIO_IQDIO_QFMT;
4820 else
4821 return QDIO_QETH_QFMT;
4822 }
4823
4824 static void qeth_determine_capabilities(struct qeth_card *card)
4825 {
4826 int rc;
4827 int length;
4828 char *prcd;
4829 struct ccw_device *ddev;
4830 int ddev_offline = 0;
4831
4832 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4833 ddev = CARD_DDEV(card);
4834 if (!ddev->online) {
4835 ddev_offline = 1;
4836 rc = ccw_device_set_online(ddev);
4837 if (rc) {
4838 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4839 goto out;
4840 }
4841 }
4842
4843 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4844 if (rc) {
4845 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4846 dev_name(&card->gdev->dev), rc);
4847 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4848 goto out_offline;
4849 }
4850 qeth_configure_unitaddr(card, prcd);
4851 if (ddev_offline)
4852 qeth_configure_blkt_default(card, prcd);
4853 kfree(prcd);
4854
4855 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4856 if (rc)
4857 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4858
4859 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4860 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4861 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4862 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4863 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4864 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4865 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4866 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4867 dev_info(&card->gdev->dev,
4868 "Completion Queueing supported\n");
4869 } else {
4870 card->options.cq = QETH_CQ_NOTAVAILABLE;
4871 }
4872
4873
4874 out_offline:
4875 if (ddev_offline == 1)
4876 ccw_device_set_offline(ddev);
4877 out:
4878 return;
4879 }
4880
4881 static void qeth_qdio_establish_cq(struct qeth_card *card,
4882 struct qdio_buffer **in_sbal_ptrs,
4883 void (**queue_start_poll)
4884 (struct ccw_device *, int,
4885 unsigned long))
4886 {
4887 int i;
4888
4889 if (card->options.cq == QETH_CQ_ENABLED) {
4890 int offset = QDIO_MAX_BUFFERS_PER_Q *
4891 (card->qdio.no_in_queues - 1);
4892 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4893 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4894 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4895 }
4896
4897 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4898 }
4899 }
4900
4901 static int qeth_qdio_establish(struct qeth_card *card)
4902 {
4903 struct qdio_initialize init_data;
4904 char *qib_param_field;
4905 struct qdio_buffer **in_sbal_ptrs;
4906 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4907 struct qdio_buffer **out_sbal_ptrs;
4908 int i, j, k;
4909 int rc = 0;
4910
4911 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4912
4913 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4914 GFP_KERNEL);
4915 if (!qib_param_field) {
4916 rc = -ENOMEM;
4917 goto out_free_nothing;
4918 }
4919
4920 qeth_create_qib_param_field(card, qib_param_field);
4921 qeth_create_qib_param_field_blkt(card, qib_param_field);
4922
4923 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4924 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4925 GFP_KERNEL);
4926 if (!in_sbal_ptrs) {
4927 rc = -ENOMEM;
4928 goto out_free_qib_param;
4929 }
4930 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4931 in_sbal_ptrs[i] = (struct qdio_buffer *)
4932 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4933 }
4934
4935 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4936 GFP_KERNEL);
4937 if (!queue_start_poll) {
4938 rc = -ENOMEM;
4939 goto out_free_in_sbals;
4940 }
4941 for (i = 0; i < card->qdio.no_in_queues; ++i)
4942 queue_start_poll[i] = card->discipline->start_poll;
4943
4944 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4945
4946 out_sbal_ptrs =
4947 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4948 sizeof(void *), GFP_KERNEL);
4949 if (!out_sbal_ptrs) {
4950 rc = -ENOMEM;
4951 goto out_free_queue_start_poll;
4952 }
4953 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4954 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4955 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4956 card->qdio.out_qs[i]->bufs[j]->buffer);
4957 }
4958
4959 memset(&init_data, 0, sizeof(struct qdio_initialize));
4960 init_data.cdev = CARD_DDEV(card);
4961 init_data.q_format = qeth_get_qdio_q_format(card);
4962 init_data.qib_param_field_format = 0;
4963 init_data.qib_param_field = qib_param_field;
4964 init_data.no_input_qs = card->qdio.no_in_queues;
4965 init_data.no_output_qs = card->qdio.no_out_queues;
4966 init_data.input_handler = card->discipline->input_handler;
4967 init_data.output_handler = card->discipline->output_handler;
4968 init_data.queue_start_poll_array = queue_start_poll;
4969 init_data.int_parm = (unsigned long) card;
4970 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
4971 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4972 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4973 init_data.scan_threshold =
4974 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4975
4976 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4977 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4978 rc = qdio_allocate(&init_data);
4979 if (rc) {
4980 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4981 goto out;
4982 }
4983 rc = qdio_establish(&init_data);
4984 if (rc) {
4985 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4986 qdio_free(CARD_DDEV(card));
4987 }
4988 }
4989
4990 switch (card->options.cq) {
4991 case QETH_CQ_ENABLED:
4992 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4993 break;
4994 case QETH_CQ_DISABLED:
4995 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4996 break;
4997 default:
4998 break;
4999 }
5000 out:
5001 kfree(out_sbal_ptrs);
5002 out_free_queue_start_poll:
5003 kfree(queue_start_poll);
5004 out_free_in_sbals:
5005 kfree(in_sbal_ptrs);
5006 out_free_qib_param:
5007 kfree(qib_param_field);
5008 out_free_nothing:
5009 return rc;
5010 }
5011
5012 static void qeth_core_free_card(struct qeth_card *card)
5013 {
5014
5015 QETH_DBF_TEXT(SETUP, 2, "freecrd");
5016 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5017 qeth_clean_channel(&card->read);
5018 qeth_clean_channel(&card->write);
5019 if (card->dev)
5020 free_netdev(card->dev);
5021 qeth_free_qdio_buffers(card);
5022 unregister_service_level(&card->qeth_service_level);
5023 kfree(card);
5024 }
5025
5026 void qeth_trace_features(struct qeth_card *card)
5027 {
5028 QETH_CARD_TEXT(card, 2, "features");
5029 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5030 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5031 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5032 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5033 sizeof(card->info.diagass_support));
5034 }
5035 EXPORT_SYMBOL_GPL(qeth_trace_features);
5036
5037 static struct ccw_device_id qeth_ids[] = {
5038 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5039 .driver_info = QETH_CARD_TYPE_OSD},
5040 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5041 .driver_info = QETH_CARD_TYPE_IQD},
5042 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5043 .driver_info = QETH_CARD_TYPE_OSN},
5044 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5045 .driver_info = QETH_CARD_TYPE_OSM},
5046 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5047 .driver_info = QETH_CARD_TYPE_OSX},
5048 {},
5049 };
5050 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5051
5052 static struct ccw_driver qeth_ccw_driver = {
5053 .driver = {
5054 .owner = THIS_MODULE,
5055 .name = "qeth",
5056 },
5057 .ids = qeth_ids,
5058 .probe = ccwgroup_probe_ccwdev,
5059 .remove = ccwgroup_remove_ccwdev,
5060 };
5061
5062 int qeth_core_hardsetup_card(struct qeth_card *card)
5063 {
5064 int retries = 3;
5065 int rc;
5066
5067 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5068 atomic_set(&card->force_alloc_skb, 0);
5069 qeth_update_from_chp_desc(card);
5070 retry:
5071 if (retries < 3)
5072 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5073 dev_name(&card->gdev->dev));
5074 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5075 ccw_device_set_offline(CARD_DDEV(card));
5076 ccw_device_set_offline(CARD_WDEV(card));
5077 ccw_device_set_offline(CARD_RDEV(card));
5078 qdio_free(CARD_DDEV(card));
5079 rc = ccw_device_set_online(CARD_RDEV(card));
5080 if (rc)
5081 goto retriable;
5082 rc = ccw_device_set_online(CARD_WDEV(card));
5083 if (rc)
5084 goto retriable;
5085 rc = ccw_device_set_online(CARD_DDEV(card));
5086 if (rc)
5087 goto retriable;
5088 retriable:
5089 if (rc == -ERESTARTSYS) {
5090 QETH_DBF_TEXT(SETUP, 2, "break1");
5091 return rc;
5092 } else if (rc) {
5093 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5094 if (--retries < 0)
5095 goto out;
5096 else
5097 goto retry;
5098 }
5099 qeth_determine_capabilities(card);
5100 qeth_init_tokens(card);
5101 qeth_init_func_level(card);
5102 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5103 if (rc == -ERESTARTSYS) {
5104 QETH_DBF_TEXT(SETUP, 2, "break2");
5105 return rc;
5106 } else if (rc) {
5107 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5108 if (--retries < 0)
5109 goto out;
5110 else
5111 goto retry;
5112 }
5113 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5114 if (rc == -ERESTARTSYS) {
5115 QETH_DBF_TEXT(SETUP, 2, "break3");
5116 return rc;
5117 } else if (rc) {
5118 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5119 if (--retries < 0)
5120 goto out;
5121 else
5122 goto retry;
5123 }
5124 card->read_or_write_problem = 0;
5125 rc = qeth_mpc_initialize(card);
5126 if (rc) {
5127 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5128 goto out;
5129 }
5130
5131 rc = qeth_send_startlan(card);
5132 if (rc) {
5133 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5134 if (rc == IPA_RC_LAN_OFFLINE) {
5135 dev_warn(&card->gdev->dev,
5136 "The LAN is offline\n");
5137 card->lan_online = 0;
5138 } else {
5139 rc = -ENODEV;
5140 goto out;
5141 }
5142 } else
5143 card->lan_online = 1;
5144
5145 card->options.ipa4.supported_funcs = 0;
5146 card->options.ipa6.supported_funcs = 0;
5147 card->options.adp.supported_funcs = 0;
5148 card->options.sbp.supported_funcs = 0;
5149 card->info.diagass_support = 0;
5150 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5151 if (rc == -ENOMEM)
5152 goto out;
5153 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5154 rc = qeth_query_setadapterparms(card);
5155 if (rc < 0) {
5156 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5157 goto out;
5158 }
5159 }
5160 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5161 rc = qeth_query_setdiagass(card);
5162 if (rc < 0) {
5163 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5164 goto out;
5165 }
5166 }
5167 return 0;
5168 out:
5169 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5170 "an error on the device\n");
5171 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5172 dev_name(&card->gdev->dev), rc);
5173 return rc;
5174 }
5175 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5176
5177 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5178 struct sk_buff *skb, int offset, int data_len)
5179 {
5180 struct page *page = virt_to_page(element->addr);
5181 unsigned int next_frag;
5182
5183 /* first fill the linear space */
5184 if (!skb->len) {
5185 unsigned int linear = min(data_len, skb_tailroom(skb));
5186
5187 skb_put_data(skb, element->addr + offset, linear);
5188 data_len -= linear;
5189 if (!data_len)
5190 return;
5191 offset += linear;
5192 /* fall through to add page frag for remaining data */
5193 }
5194
5195 next_frag = skb_shinfo(skb)->nr_frags;
5196 get_page(page);
5197 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5198 }
5199
5200 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5201 {
5202 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5203 }
5204
5205 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5206 struct qeth_qdio_buffer *qethbuffer,
5207 struct qdio_buffer_element **__element, int *__offset,
5208 struct qeth_hdr **hdr)
5209 {
5210 struct qdio_buffer_element *element = *__element;
5211 struct qdio_buffer *buffer = qethbuffer->buffer;
5212 int offset = *__offset;
5213 struct sk_buff *skb;
5214 int skb_len = 0;
5215 void *data_ptr;
5216 int data_len;
5217 int headroom = 0;
5218 int use_rx_sg = 0;
5219
5220 /* qeth_hdr must not cross element boundaries */
5221 while (element->length < offset + sizeof(struct qeth_hdr)) {
5222 if (qeth_is_last_sbale(element))
5223 return NULL;
5224 element++;
5225 offset = 0;
5226 }
5227 *hdr = element->addr + offset;
5228
5229 offset += sizeof(struct qeth_hdr);
5230 switch ((*hdr)->hdr.l2.id) {
5231 case QETH_HEADER_TYPE_LAYER2:
5232 skb_len = (*hdr)->hdr.l2.pkt_length;
5233 break;
5234 case QETH_HEADER_TYPE_LAYER3:
5235 skb_len = (*hdr)->hdr.l3.length;
5236 headroom = ETH_HLEN;
5237 break;
5238 case QETH_HEADER_TYPE_OSN:
5239 skb_len = (*hdr)->hdr.osn.pdu_length;
5240 headroom = sizeof(struct qeth_hdr);
5241 break;
5242 default:
5243 break;
5244 }
5245
5246 if (!skb_len)
5247 return NULL;
5248
5249 if (((skb_len >= card->options.rx_sg_cb) &&
5250 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5251 (!atomic_read(&card->force_alloc_skb))) ||
5252 (card->options.cq == QETH_CQ_ENABLED))
5253 use_rx_sg = 1;
5254
5255 if (use_rx_sg && qethbuffer->rx_skb) {
5256 /* QETH_CQ_ENABLED only: */
5257 skb = qethbuffer->rx_skb;
5258 qethbuffer->rx_skb = NULL;
5259 } else {
5260 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5261
5262 skb = dev_alloc_skb(linear + headroom);
5263 }
5264 if (!skb)
5265 goto no_mem;
5266 if (headroom)
5267 skb_reserve(skb, headroom);
5268
5269 data_ptr = element->addr + offset;
5270 while (skb_len) {
5271 data_len = min(skb_len, (int)(element->length - offset));
5272 if (data_len) {
5273 if (use_rx_sg)
5274 qeth_create_skb_frag(element, skb, offset,
5275 data_len);
5276 else
5277 skb_put_data(skb, data_ptr, data_len);
5278 }
5279 skb_len -= data_len;
5280 if (skb_len) {
5281 if (qeth_is_last_sbale(element)) {
5282 QETH_CARD_TEXT(card, 4, "unexeob");
5283 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5284 dev_kfree_skb_any(skb);
5285 card->stats.rx_errors++;
5286 return NULL;
5287 }
5288 element++;
5289 offset = 0;
5290 data_ptr = element->addr;
5291 } else {
5292 offset += data_len;
5293 }
5294 }
5295 *__element = element;
5296 *__offset = offset;
5297 if (use_rx_sg && card->options.performance_stats) {
5298 card->perf_stats.sg_skbs_rx++;
5299 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5300 }
5301 return skb;
5302 no_mem:
5303 if (net_ratelimit()) {
5304 QETH_CARD_TEXT(card, 2, "noskbmem");
5305 }
5306 card->stats.rx_dropped++;
5307 return NULL;
5308 }
5309 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5310
5311 int qeth_poll(struct napi_struct *napi, int budget)
5312 {
5313 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5314 int work_done = 0;
5315 struct qeth_qdio_buffer *buffer;
5316 int done;
5317 int new_budget = budget;
5318
5319 if (card->options.performance_stats) {
5320 card->perf_stats.inbound_cnt++;
5321 card->perf_stats.inbound_start_time = qeth_get_micros();
5322 }
5323
5324 while (1) {
5325 if (!card->rx.b_count) {
5326 card->rx.qdio_err = 0;
5327 card->rx.b_count = qdio_get_next_buffers(
5328 card->data.ccwdev, 0, &card->rx.b_index,
5329 &card->rx.qdio_err);
5330 if (card->rx.b_count <= 0) {
5331 card->rx.b_count = 0;
5332 break;
5333 }
5334 card->rx.b_element =
5335 &card->qdio.in_q->bufs[card->rx.b_index]
5336 .buffer->element[0];
5337 card->rx.e_offset = 0;
5338 }
5339
5340 while (card->rx.b_count) {
5341 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5342 if (!(card->rx.qdio_err &&
5343 qeth_check_qdio_errors(card, buffer->buffer,
5344 card->rx.qdio_err, "qinerr")))
5345 work_done +=
5346 card->discipline->process_rx_buffer(
5347 card, new_budget, &done);
5348 else
5349 done = 1;
5350
5351 if (done) {
5352 if (card->options.performance_stats)
5353 card->perf_stats.bufs_rec++;
5354 qeth_put_buffer_pool_entry(card,
5355 buffer->pool_entry);
5356 qeth_queue_input_buffer(card, card->rx.b_index);
5357 card->rx.b_count--;
5358 if (card->rx.b_count) {
5359 card->rx.b_index =
5360 (card->rx.b_index + 1) %
5361 QDIO_MAX_BUFFERS_PER_Q;
5362 card->rx.b_element =
5363 &card->qdio.in_q
5364 ->bufs[card->rx.b_index]
5365 .buffer->element[0];
5366 card->rx.e_offset = 0;
5367 }
5368 }
5369
5370 if (work_done >= budget)
5371 goto out;
5372 else
5373 new_budget = budget - work_done;
5374 }
5375 }
5376
5377 napi_complete_done(napi, work_done);
5378 if (qdio_start_irq(card->data.ccwdev, 0))
5379 napi_schedule(&card->napi);
5380 out:
5381 if (card->options.performance_stats)
5382 card->perf_stats.inbound_time += qeth_get_micros() -
5383 card->perf_stats.inbound_start_time;
5384 return work_done;
5385 }
5386 EXPORT_SYMBOL_GPL(qeth_poll);
5387
5388 int qeth_setassparms_cb(struct qeth_card *card,
5389 struct qeth_reply *reply, unsigned long data)
5390 {
5391 struct qeth_ipa_cmd *cmd;
5392
5393 QETH_CARD_TEXT(card, 4, "defadpcb");
5394
5395 cmd = (struct qeth_ipa_cmd *) data;
5396 if (cmd->hdr.return_code == 0) {
5397 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5398 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5399 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5400 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5401 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5402 }
5403 return 0;
5404 }
5405 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5406
5407 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5408 enum qeth_ipa_funcs ipa_func,
5409 __u16 cmd_code, __u16 len,
5410 enum qeth_prot_versions prot)
5411 {
5412 struct qeth_cmd_buffer *iob;
5413 struct qeth_ipa_cmd *cmd;
5414
5415 QETH_CARD_TEXT(card, 4, "getasscm");
5416 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5417
5418 if (iob) {
5419 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5420 cmd->data.setassparms.hdr.assist_no = ipa_func;
5421 cmd->data.setassparms.hdr.length = 8 + len;
5422 cmd->data.setassparms.hdr.command_code = cmd_code;
5423 cmd->data.setassparms.hdr.return_code = 0;
5424 cmd->data.setassparms.hdr.seq_no = 0;
5425 }
5426
5427 return iob;
5428 }
5429 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5430
5431 int qeth_send_setassparms(struct qeth_card *card,
5432 struct qeth_cmd_buffer *iob, __u16 len, long data,
5433 int (*reply_cb)(struct qeth_card *,
5434 struct qeth_reply *, unsigned long),
5435 void *reply_param)
5436 {
5437 int rc;
5438 struct qeth_ipa_cmd *cmd;
5439
5440 QETH_CARD_TEXT(card, 4, "sendassp");
5441
5442 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5443 if (len <= sizeof(__u32))
5444 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5445 else /* (len > sizeof(__u32)) */
5446 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5447
5448 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5449 return rc;
5450 }
5451 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5452
5453 int qeth_send_simple_setassparms(struct qeth_card *card,
5454 enum qeth_ipa_funcs ipa_func,
5455 __u16 cmd_code, long data)
5456 {
5457 int rc;
5458 int length = 0;
5459 struct qeth_cmd_buffer *iob;
5460
5461 QETH_CARD_TEXT(card, 4, "simassp4");
5462 if (data)
5463 length = sizeof(__u32);
5464 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5465 length, QETH_PROT_IPV4);
5466 if (!iob)
5467 return -ENOMEM;
5468 rc = qeth_send_setassparms(card, iob, length, data,
5469 qeth_setassparms_cb, NULL);
5470 return rc;
5471 }
5472 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5473
5474 static void qeth_unregister_dbf_views(void)
5475 {
5476 int x;
5477 for (x = 0; x < QETH_DBF_INFOS; x++) {
5478 debug_unregister(qeth_dbf[x].id);
5479 qeth_dbf[x].id = NULL;
5480 }
5481 }
5482
5483 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5484 {
5485 char dbf_txt_buf[32];
5486 va_list args;
5487
5488 if (!debug_level_enabled(id, level))
5489 return;
5490 va_start(args, fmt);
5491 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5492 va_end(args);
5493 debug_text_event(id, level, dbf_txt_buf);
5494 }
5495 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5496
5497 static int qeth_register_dbf_views(void)
5498 {
5499 int ret;
5500 int x;
5501
5502 for (x = 0; x < QETH_DBF_INFOS; x++) {
5503 /* register the areas */
5504 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5505 qeth_dbf[x].pages,
5506 qeth_dbf[x].areas,
5507 qeth_dbf[x].len);
5508 if (qeth_dbf[x].id == NULL) {
5509 qeth_unregister_dbf_views();
5510 return -ENOMEM;
5511 }
5512
5513 /* register a view */
5514 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5515 if (ret) {
5516 qeth_unregister_dbf_views();
5517 return ret;
5518 }
5519
5520 /* set a passing level */
5521 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5522 }
5523
5524 return 0;
5525 }
5526
5527 int qeth_core_load_discipline(struct qeth_card *card,
5528 enum qeth_discipline_id discipline)
5529 {
5530 int rc = 0;
5531
5532 mutex_lock(&qeth_mod_mutex);
5533 switch (discipline) {
5534 case QETH_DISCIPLINE_LAYER3:
5535 card->discipline = try_then_request_module(
5536 symbol_get(qeth_l3_discipline), "qeth_l3");
5537 break;
5538 case QETH_DISCIPLINE_LAYER2:
5539 card->discipline = try_then_request_module(
5540 symbol_get(qeth_l2_discipline), "qeth_l2");
5541 break;
5542 default:
5543 break;
5544 }
5545
5546 if (!card->discipline) {
5547 dev_err(&card->gdev->dev, "There is no kernel module to "
5548 "support discipline %d\n", discipline);
5549 rc = -EINVAL;
5550 }
5551 mutex_unlock(&qeth_mod_mutex);
5552 return rc;
5553 }
5554
5555 void qeth_core_free_discipline(struct qeth_card *card)
5556 {
5557 if (card->options.layer2)
5558 symbol_put(qeth_l2_discipline);
5559 else
5560 symbol_put(qeth_l3_discipline);
5561 card->discipline = NULL;
5562 }
5563
5564 const struct device_type qeth_generic_devtype = {
5565 .name = "qeth_generic",
5566 .groups = qeth_generic_attr_groups,
5567 };
5568 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5569
5570 static const struct device_type qeth_osn_devtype = {
5571 .name = "qeth_osn",
5572 .groups = qeth_osn_attr_groups,
5573 };
5574
5575 #define DBF_NAME_LEN 20
5576
5577 struct qeth_dbf_entry {
5578 char dbf_name[DBF_NAME_LEN];
5579 debug_info_t *dbf_info;
5580 struct list_head dbf_list;
5581 };
5582
5583 static LIST_HEAD(qeth_dbf_list);
5584 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5585
5586 static debug_info_t *qeth_get_dbf_entry(char *name)
5587 {
5588 struct qeth_dbf_entry *entry;
5589 debug_info_t *rc = NULL;
5590
5591 mutex_lock(&qeth_dbf_list_mutex);
5592 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5593 if (strcmp(entry->dbf_name, name) == 0) {
5594 rc = entry->dbf_info;
5595 break;
5596 }
5597 }
5598 mutex_unlock(&qeth_dbf_list_mutex);
5599 return rc;
5600 }
5601
5602 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5603 {
5604 struct qeth_dbf_entry *new_entry;
5605
5606 card->debug = debug_register(name, 2, 1, 8);
5607 if (!card->debug) {
5608 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5609 goto err;
5610 }
5611 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5612 goto err_dbg;
5613 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5614 if (!new_entry)
5615 goto err_dbg;
5616 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5617 new_entry->dbf_info = card->debug;
5618 mutex_lock(&qeth_dbf_list_mutex);
5619 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5620 mutex_unlock(&qeth_dbf_list_mutex);
5621
5622 return 0;
5623
5624 err_dbg:
5625 debug_unregister(card->debug);
5626 err:
5627 return -ENOMEM;
5628 }
5629
5630 static void qeth_clear_dbf_list(void)
5631 {
5632 struct qeth_dbf_entry *entry, *tmp;
5633
5634 mutex_lock(&qeth_dbf_list_mutex);
5635 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5636 list_del(&entry->dbf_list);
5637 debug_unregister(entry->dbf_info);
5638 kfree(entry);
5639 }
5640 mutex_unlock(&qeth_dbf_list_mutex);
5641 }
5642
5643 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5644 {
5645 struct qeth_card *card;
5646 struct device *dev;
5647 int rc;
5648 enum qeth_discipline_id enforced_disc;
5649 unsigned long flags;
5650 char dbf_name[DBF_NAME_LEN];
5651
5652 QETH_DBF_TEXT(SETUP, 2, "probedev");
5653
5654 dev = &gdev->dev;
5655 if (!get_device(dev))
5656 return -ENODEV;
5657
5658 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5659
5660 card = qeth_alloc_card();
5661 if (!card) {
5662 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5663 rc = -ENOMEM;
5664 goto err_dev;
5665 }
5666
5667 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5668 dev_name(&gdev->dev));
5669 card->debug = qeth_get_dbf_entry(dbf_name);
5670 if (!card->debug) {
5671 rc = qeth_add_dbf_entry(card, dbf_name);
5672 if (rc)
5673 goto err_card;
5674 }
5675
5676 card->read.ccwdev = gdev->cdev[0];
5677 card->write.ccwdev = gdev->cdev[1];
5678 card->data.ccwdev = gdev->cdev[2];
5679 dev_set_drvdata(&gdev->dev, card);
5680 card->gdev = gdev;
5681 gdev->cdev[0]->handler = qeth_irq;
5682 gdev->cdev[1]->handler = qeth_irq;
5683 gdev->cdev[2]->handler = qeth_irq;
5684
5685 qeth_determine_card_type(card);
5686 rc = qeth_setup_card(card);
5687 if (rc) {
5688 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5689 goto err_card;
5690 }
5691
5692 qeth_determine_capabilities(card);
5693 enforced_disc = qeth_enforce_discipline(card);
5694 switch (enforced_disc) {
5695 case QETH_DISCIPLINE_UNDETERMINED:
5696 gdev->dev.type = &qeth_generic_devtype;
5697 break;
5698 default:
5699 card->info.layer_enforced = true;
5700 rc = qeth_core_load_discipline(card, enforced_disc);
5701 if (rc)
5702 goto err_card;
5703
5704 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5705 ? card->discipline->devtype
5706 : &qeth_osn_devtype;
5707 rc = card->discipline->setup(card->gdev);
5708 if (rc)
5709 goto err_disc;
5710 break;
5711 }
5712
5713 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5714 list_add_tail(&card->list, &qeth_core_card_list.list);
5715 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5716 return 0;
5717
5718 err_disc:
5719 qeth_core_free_discipline(card);
5720 err_card:
5721 qeth_core_free_card(card);
5722 err_dev:
5723 put_device(dev);
5724 return rc;
5725 }
5726
5727 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5728 {
5729 unsigned long flags;
5730 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5731
5732 QETH_DBF_TEXT(SETUP, 2, "removedv");
5733
5734 if (card->discipline) {
5735 card->discipline->remove(gdev);
5736 qeth_core_free_discipline(card);
5737 }
5738
5739 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5740 list_del(&card->list);
5741 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5742 qeth_core_free_card(card);
5743 dev_set_drvdata(&gdev->dev, NULL);
5744 put_device(&gdev->dev);
5745 return;
5746 }
5747
5748 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5749 {
5750 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5751 int rc = 0;
5752 enum qeth_discipline_id def_discipline;
5753
5754 if (!card->discipline) {
5755 if (card->info.type == QETH_CARD_TYPE_IQD)
5756 def_discipline = QETH_DISCIPLINE_LAYER3;
5757 else
5758 def_discipline = QETH_DISCIPLINE_LAYER2;
5759 rc = qeth_core_load_discipline(card, def_discipline);
5760 if (rc)
5761 goto err;
5762 rc = card->discipline->setup(card->gdev);
5763 if (rc) {
5764 qeth_core_free_discipline(card);
5765 goto err;
5766 }
5767 }
5768 rc = card->discipline->set_online(gdev);
5769 err:
5770 return rc;
5771 }
5772
5773 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5774 {
5775 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5776 return card->discipline->set_offline(gdev);
5777 }
5778
5779 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5780 {
5781 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5782 qeth_set_allowed_threads(card, 0, 1);
5783 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5784 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5785 qeth_qdio_clear_card(card, 0);
5786 qeth_clear_qdio_buffers(card);
5787 qdio_free(CARD_DDEV(card));
5788 }
5789
5790 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5791 {
5792 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5793 if (card->discipline && card->discipline->freeze)
5794 return card->discipline->freeze(gdev);
5795 return 0;
5796 }
5797
5798 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5799 {
5800 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5801 if (card->discipline && card->discipline->thaw)
5802 return card->discipline->thaw(gdev);
5803 return 0;
5804 }
5805
5806 static int qeth_core_restore(struct ccwgroup_device *gdev)
5807 {
5808 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5809 if (card->discipline && card->discipline->restore)
5810 return card->discipline->restore(gdev);
5811 return 0;
5812 }
5813
5814 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5815 .driver = {
5816 .owner = THIS_MODULE,
5817 .name = "qeth",
5818 },
5819 .ccw_driver = &qeth_ccw_driver,
5820 .setup = qeth_core_probe_device,
5821 .remove = qeth_core_remove_device,
5822 .set_online = qeth_core_set_online,
5823 .set_offline = qeth_core_set_offline,
5824 .shutdown = qeth_core_shutdown,
5825 .prepare = NULL,
5826 .complete = NULL,
5827 .freeze = qeth_core_freeze,
5828 .thaw = qeth_core_thaw,
5829 .restore = qeth_core_restore,
5830 };
5831
5832 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5833 size_t count)
5834 {
5835 int err;
5836
5837 err = ccwgroup_create_dev(qeth_core_root_dev,
5838 &qeth_core_ccwgroup_driver, 3, buf);
5839
5840 return err ? err : count;
5841 }
5842 static DRIVER_ATTR_WO(group);
5843
5844 static struct attribute *qeth_drv_attrs[] = {
5845 &driver_attr_group.attr,
5846 NULL,
5847 };
5848 static struct attribute_group qeth_drv_attr_group = {
5849 .attrs = qeth_drv_attrs,
5850 };
5851 static const struct attribute_group *qeth_drv_attr_groups[] = {
5852 &qeth_drv_attr_group,
5853 NULL,
5854 };
5855
5856 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5857 {
5858 struct qeth_card *card = dev->ml_priv;
5859 struct mii_ioctl_data *mii_data;
5860 int rc = 0;
5861
5862 if (!card)
5863 return -ENODEV;
5864
5865 if (!qeth_card_hw_is_reachable(card))
5866 return -ENODEV;
5867
5868 if (card->info.type == QETH_CARD_TYPE_OSN)
5869 return -EPERM;
5870
5871 switch (cmd) {
5872 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5873 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5874 break;
5875 case SIOC_QETH_GET_CARD_TYPE:
5876 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5877 card->info.type == QETH_CARD_TYPE_OSM ||
5878 card->info.type == QETH_CARD_TYPE_OSX) &&
5879 !card->info.guestlan)
5880 return 1;
5881 else
5882 return 0;
5883 case SIOCGMIIPHY:
5884 mii_data = if_mii(rq);
5885 mii_data->phy_id = 0;
5886 break;
5887 case SIOCGMIIREG:
5888 mii_data = if_mii(rq);
5889 if (mii_data->phy_id != 0)
5890 rc = -EINVAL;
5891 else
5892 mii_data->val_out = qeth_mdio_read(dev,
5893 mii_data->phy_id, mii_data->reg_num);
5894 break;
5895 case SIOC_QETH_QUERY_OAT:
5896 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5897 break;
5898 default:
5899 if (card->discipline->do_ioctl)
5900 rc = card->discipline->do_ioctl(dev, rq, cmd);
5901 else
5902 rc = -EOPNOTSUPP;
5903 }
5904 if (rc)
5905 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5906 return rc;
5907 }
5908 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5909
5910 static struct {
5911 const char str[ETH_GSTRING_LEN];
5912 } qeth_ethtool_stats_keys[] = {
5913 /* 0 */{"rx skbs"},
5914 {"rx buffers"},
5915 {"tx skbs"},
5916 {"tx buffers"},
5917 {"tx skbs no packing"},
5918 {"tx buffers no packing"},
5919 {"tx skbs packing"},
5920 {"tx buffers packing"},
5921 {"tx sg skbs"},
5922 {"tx sg frags"},
5923 /* 10 */{"rx sg skbs"},
5924 {"rx sg frags"},
5925 {"rx sg page allocs"},
5926 {"tx large kbytes"},
5927 {"tx large count"},
5928 {"tx pk state ch n->p"},
5929 {"tx pk state ch p->n"},
5930 {"tx pk watermark low"},
5931 {"tx pk watermark high"},
5932 {"queue 0 buffer usage"},
5933 /* 20 */{"queue 1 buffer usage"},
5934 {"queue 2 buffer usage"},
5935 {"queue 3 buffer usage"},
5936 {"rx poll time"},
5937 {"rx poll count"},
5938 {"rx do_QDIO time"},
5939 {"rx do_QDIO count"},
5940 {"tx handler time"},
5941 {"tx handler count"},
5942 {"tx time"},
5943 /* 30 */{"tx count"},
5944 {"tx do_QDIO time"},
5945 {"tx do_QDIO count"},
5946 {"tx csum"},
5947 {"tx lin"},
5948 {"tx linfail"},
5949 {"cq handler count"},
5950 {"cq handler time"}
5951 };
5952
5953 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5954 {
5955 switch (stringset) {
5956 case ETH_SS_STATS:
5957 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5958 default:
5959 return -EINVAL;
5960 }
5961 }
5962 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5963
5964 void qeth_core_get_ethtool_stats(struct net_device *dev,
5965 struct ethtool_stats *stats, u64 *data)
5966 {
5967 struct qeth_card *card = dev->ml_priv;
5968 data[0] = card->stats.rx_packets -
5969 card->perf_stats.initial_rx_packets;
5970 data[1] = card->perf_stats.bufs_rec;
5971 data[2] = card->stats.tx_packets -
5972 card->perf_stats.initial_tx_packets;
5973 data[3] = card->perf_stats.bufs_sent;
5974 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5975 - card->perf_stats.skbs_sent_pack;
5976 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5977 data[6] = card->perf_stats.skbs_sent_pack;
5978 data[7] = card->perf_stats.bufs_sent_pack;
5979 data[8] = card->perf_stats.sg_skbs_sent;
5980 data[9] = card->perf_stats.sg_frags_sent;
5981 data[10] = card->perf_stats.sg_skbs_rx;
5982 data[11] = card->perf_stats.sg_frags_rx;
5983 data[12] = card->perf_stats.sg_alloc_page_rx;
5984 data[13] = (card->perf_stats.large_send_bytes >> 10);
5985 data[14] = card->perf_stats.large_send_cnt;
5986 data[15] = card->perf_stats.sc_dp_p;
5987 data[16] = card->perf_stats.sc_p_dp;
5988 data[17] = QETH_LOW_WATERMARK_PACK;
5989 data[18] = QETH_HIGH_WATERMARK_PACK;
5990 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5991 data[20] = (card->qdio.no_out_queues > 1) ?
5992 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5993 data[21] = (card->qdio.no_out_queues > 2) ?
5994 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5995 data[22] = (card->qdio.no_out_queues > 3) ?
5996 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5997 data[23] = card->perf_stats.inbound_time;
5998 data[24] = card->perf_stats.inbound_cnt;
5999 data[25] = card->perf_stats.inbound_do_qdio_time;
6000 data[26] = card->perf_stats.inbound_do_qdio_cnt;
6001 data[27] = card->perf_stats.outbound_handler_time;
6002 data[28] = card->perf_stats.outbound_handler_cnt;
6003 data[29] = card->perf_stats.outbound_time;
6004 data[30] = card->perf_stats.outbound_cnt;
6005 data[31] = card->perf_stats.outbound_do_qdio_time;
6006 data[32] = card->perf_stats.outbound_do_qdio_cnt;
6007 data[33] = card->perf_stats.tx_csum;
6008 data[34] = card->perf_stats.tx_lin;
6009 data[35] = card->perf_stats.tx_linfail;
6010 data[36] = card->perf_stats.cq_cnt;
6011 data[37] = card->perf_stats.cq_time;
6012 }
6013 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6014
6015 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6016 {
6017 switch (stringset) {
6018 case ETH_SS_STATS:
6019 memcpy(data, &qeth_ethtool_stats_keys,
6020 sizeof(qeth_ethtool_stats_keys));
6021 break;
6022 default:
6023 WARN_ON(1);
6024 break;
6025 }
6026 }
6027 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6028
6029 void qeth_core_get_drvinfo(struct net_device *dev,
6030 struct ethtool_drvinfo *info)
6031 {
6032 struct qeth_card *card = dev->ml_priv;
6033
6034 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
6035 sizeof(info->driver));
6036 strlcpy(info->version, "1.0", sizeof(info->version));
6037 strlcpy(info->fw_version, card->info.mcl_level,
6038 sizeof(info->fw_version));
6039 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6040 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6041 }
6042 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6043
6044 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6045 /* Autoneg and full-duplex are supported and advertised unconditionally. */
6046 /* Always advertise and support all speeds up to specified, and only one */
6047 /* specified port type. */
6048 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6049 int maxspeed, int porttype)
6050 {
6051 ethtool_link_ksettings_zero_link_mode(cmd, supported);
6052 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6053 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6054
6055 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6056 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6057
6058 switch (porttype) {
6059 case PORT_TP:
6060 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6061 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6062 break;
6063 case PORT_FIBRE:
6064 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6065 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6066 break;
6067 default:
6068 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6069 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6070 WARN_ON_ONCE(1);
6071 }
6072
6073 /* fallthrough from high to low, to select all legal speeds: */
6074 switch (maxspeed) {
6075 case SPEED_10000:
6076 ethtool_link_ksettings_add_link_mode(cmd, supported,
6077 10000baseT_Full);
6078 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6079 10000baseT_Full);
6080 case SPEED_1000:
6081 ethtool_link_ksettings_add_link_mode(cmd, supported,
6082 1000baseT_Full);
6083 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6084 1000baseT_Full);
6085 ethtool_link_ksettings_add_link_mode(cmd, supported,
6086 1000baseT_Half);
6087 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6088 1000baseT_Half);
6089 case SPEED_100:
6090 ethtool_link_ksettings_add_link_mode(cmd, supported,
6091 100baseT_Full);
6092 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6093 100baseT_Full);
6094 ethtool_link_ksettings_add_link_mode(cmd, supported,
6095 100baseT_Half);
6096 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6097 100baseT_Half);
6098 case SPEED_10:
6099 ethtool_link_ksettings_add_link_mode(cmd, supported,
6100 10baseT_Full);
6101 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6102 10baseT_Full);
6103 ethtool_link_ksettings_add_link_mode(cmd, supported,
6104 10baseT_Half);
6105 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6106 10baseT_Half);
6107 /* end fallthrough */
6108 break;
6109 default:
6110 ethtool_link_ksettings_add_link_mode(cmd, supported,
6111 10baseT_Full);
6112 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6113 10baseT_Full);
6114 ethtool_link_ksettings_add_link_mode(cmd, supported,
6115 10baseT_Half);
6116 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6117 10baseT_Half);
6118 WARN_ON_ONCE(1);
6119 }
6120 }
6121
6122 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6123 struct ethtool_link_ksettings *cmd)
6124 {
6125 struct qeth_card *card = netdev->ml_priv;
6126 enum qeth_link_types link_type;
6127 struct carrier_info carrier_info;
6128 int rc;
6129
6130 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6131 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6132 else
6133 link_type = card->info.link_type;
6134
6135 cmd->base.duplex = DUPLEX_FULL;
6136 cmd->base.autoneg = AUTONEG_ENABLE;
6137 cmd->base.phy_address = 0;
6138 cmd->base.mdio_support = 0;
6139 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6140 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6141
6142 switch (link_type) {
6143 case QETH_LINK_TYPE_FAST_ETH:
6144 case QETH_LINK_TYPE_LANE_ETH100:
6145 cmd->base.speed = SPEED_100;
6146 cmd->base.port = PORT_TP;
6147 break;
6148 case QETH_LINK_TYPE_GBIT_ETH:
6149 case QETH_LINK_TYPE_LANE_ETH1000:
6150 cmd->base.speed = SPEED_1000;
6151 cmd->base.port = PORT_FIBRE;
6152 break;
6153 case QETH_LINK_TYPE_10GBIT_ETH:
6154 cmd->base.speed = SPEED_10000;
6155 cmd->base.port = PORT_FIBRE;
6156 break;
6157 default:
6158 cmd->base.speed = SPEED_10;
6159 cmd->base.port = PORT_TP;
6160 }
6161 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6162
6163 /* Check if we can obtain more accurate information. */
6164 /* If QUERY_CARD_INFO command is not supported or fails, */
6165 /* just return the heuristics that was filled above. */
6166 if (!qeth_card_hw_is_reachable(card))
6167 return -ENODEV;
6168 rc = qeth_query_card_info(card, &carrier_info);
6169 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6170 return 0;
6171 if (rc) /* report error from the hardware operation */
6172 return rc;
6173 /* on success, fill in the information got from the hardware */
6174
6175 netdev_dbg(netdev,
6176 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6177 carrier_info.card_type,
6178 carrier_info.port_mode,
6179 carrier_info.port_speed);
6180
6181 /* Update attributes for which we've obtained more authoritative */
6182 /* information, leave the rest the way they where filled above. */
6183 switch (carrier_info.card_type) {
6184 case CARD_INFO_TYPE_1G_COPPER_A:
6185 case CARD_INFO_TYPE_1G_COPPER_B:
6186 cmd->base.port = PORT_TP;
6187 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6188 break;
6189 case CARD_INFO_TYPE_1G_FIBRE_A:
6190 case CARD_INFO_TYPE_1G_FIBRE_B:
6191 cmd->base.port = PORT_FIBRE;
6192 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6193 break;
6194 case CARD_INFO_TYPE_10G_FIBRE_A:
6195 case CARD_INFO_TYPE_10G_FIBRE_B:
6196 cmd->base.port = PORT_FIBRE;
6197 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6198 break;
6199 }
6200
6201 switch (carrier_info.port_mode) {
6202 case CARD_INFO_PORTM_FULLDUPLEX:
6203 cmd->base.duplex = DUPLEX_FULL;
6204 break;
6205 case CARD_INFO_PORTM_HALFDUPLEX:
6206 cmd->base.duplex = DUPLEX_HALF;
6207 break;
6208 }
6209
6210 switch (carrier_info.port_speed) {
6211 case CARD_INFO_PORTS_10M:
6212 cmd->base.speed = SPEED_10;
6213 break;
6214 case CARD_INFO_PORTS_100M:
6215 cmd->base.speed = SPEED_100;
6216 break;
6217 case CARD_INFO_PORTS_1G:
6218 cmd->base.speed = SPEED_1000;
6219 break;
6220 case CARD_INFO_PORTS_10G:
6221 cmd->base.speed = SPEED_10000;
6222 break;
6223 }
6224
6225 return 0;
6226 }
6227 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6228
6229 /* Callback to handle checksum offload command reply from OSA card.
6230 * Verify that required features have been enabled on the card.
6231 * Return error in hdr->return_code as this value is checked by caller.
6232 *
6233 * Always returns zero to indicate no further messages from the OSA card.
6234 */
6235 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6236 struct qeth_reply *reply,
6237 unsigned long data)
6238 {
6239 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6240 struct qeth_checksum_cmd *chksum_cb =
6241 (struct qeth_checksum_cmd *)reply->param;
6242
6243 QETH_CARD_TEXT(card, 4, "chkdoccb");
6244 if (cmd->hdr.return_code)
6245 return 0;
6246
6247 memset(chksum_cb, 0, sizeof(*chksum_cb));
6248 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6249 chksum_cb->supported =
6250 cmd->data.setassparms.data.chksum.supported;
6251 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6252 }
6253 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6254 chksum_cb->supported =
6255 cmd->data.setassparms.data.chksum.supported;
6256 chksum_cb->enabled =
6257 cmd->data.setassparms.data.chksum.enabled;
6258 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6259 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6260 }
6261 return 0;
6262 }
6263
6264 /* Send command to OSA card and check results. */
6265 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6266 enum qeth_ipa_funcs ipa_func,
6267 __u16 cmd_code, long data,
6268 struct qeth_checksum_cmd *chksum_cb)
6269 {
6270 struct qeth_cmd_buffer *iob;
6271 int rc = -ENOMEM;
6272
6273 QETH_CARD_TEXT(card, 4, "chkdocmd");
6274 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6275 sizeof(__u32), QETH_PROT_IPV4);
6276 if (iob)
6277 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6278 qeth_ipa_checksum_run_cmd_cb,
6279 chksum_cb);
6280 return rc;
6281 }
6282
6283 static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
6284 {
6285 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR |
6286 QETH_IPA_CHECKSUM_UDP |
6287 QETH_IPA_CHECKSUM_TCP;
6288 struct qeth_checksum_cmd chksum_cb;
6289 int rc;
6290
6291 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6292 &chksum_cb);
6293 if (!rc) {
6294 if ((required_features & chksum_cb.supported) !=
6295 required_features)
6296 rc = -EIO;
6297 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6298 cstype == IPA_INBOUND_CHECKSUM)
6299 dev_warn(&card->gdev->dev,
6300 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6301 QETH_CARD_IFNAME(card));
6302 }
6303 if (rc) {
6304 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6305 dev_warn(&card->gdev->dev,
6306 "Starting HW checksumming for %s failed, using SW checksumming\n",
6307 QETH_CARD_IFNAME(card));
6308 return rc;
6309 }
6310 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6311 chksum_cb.supported, &chksum_cb);
6312 if (!rc) {
6313 if ((required_features & chksum_cb.enabled) !=
6314 required_features)
6315 rc = -EIO;
6316 }
6317 if (rc) {
6318 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6319 dev_warn(&card->gdev->dev,
6320 "Enabling HW checksumming for %s failed, using SW checksumming\n",
6321 QETH_CARD_IFNAME(card));
6322 return rc;
6323 }
6324
6325 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
6326 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
6327 return 0;
6328 }
6329
6330 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
6331 {
6332 int rc = (on) ? qeth_send_checksum_on(card, cstype)
6333 : qeth_send_simple_setassparms(card, cstype,
6334 IPA_CMD_ASS_STOP, 0);
6335 return rc ? -EIO : 0;
6336 }
6337
6338 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6339 {
6340 int rc;
6341
6342 QETH_CARD_TEXT(card, 3, "sttso");
6343
6344 if (on) {
6345 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6346 IPA_CMD_ASS_START, 0);
6347 if (rc) {
6348 dev_warn(&card->gdev->dev,
6349 "Starting outbound TCP segmentation offload for %s failed\n",
6350 QETH_CARD_IFNAME(card));
6351 return -EIO;
6352 }
6353 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6354 } else {
6355 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6356 IPA_CMD_ASS_STOP, 0);
6357 }
6358 return rc;
6359 }
6360
6361 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO)
6362
6363 /**
6364 * qeth_recover_features() - Restore device features after recovery
6365 * @dev: the recovering net_device
6366 *
6367 * Caller must hold rtnl lock.
6368 */
6369 void qeth_recover_features(struct net_device *dev)
6370 {
6371 netdev_features_t features = dev->features;
6372 struct qeth_card *card = dev->ml_priv;
6373
6374 /* force-off any feature that needs an IPA sequence.
6375 * netdev_update_features() will restart them.
6376 */
6377 dev->features &= ~QETH_HW_FEATURES;
6378 netdev_update_features(dev);
6379
6380 if (features == dev->features)
6381 return;
6382 dev_warn(&card->gdev->dev,
6383 "Device recovery failed to restore all offload features\n");
6384 }
6385 EXPORT_SYMBOL_GPL(qeth_recover_features);
6386
6387 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6388 {
6389 struct qeth_card *card = dev->ml_priv;
6390 netdev_features_t changed = dev->features ^ features;
6391 int rc = 0;
6392
6393 QETH_DBF_TEXT(SETUP, 2, "setfeat");
6394 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6395
6396 if ((changed & NETIF_F_IP_CSUM)) {
6397 rc = qeth_set_ipa_csum(card,
6398 features & NETIF_F_IP_CSUM ? 1 : 0,
6399 IPA_OUTBOUND_CHECKSUM);
6400 if (rc)
6401 changed ^= NETIF_F_IP_CSUM;
6402 }
6403 if ((changed & NETIF_F_RXCSUM)) {
6404 rc = qeth_set_ipa_csum(card,
6405 features & NETIF_F_RXCSUM ? 1 : 0,
6406 IPA_INBOUND_CHECKSUM);
6407 if (rc)
6408 changed ^= NETIF_F_RXCSUM;
6409 }
6410 if ((changed & NETIF_F_TSO)) {
6411 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6412 if (rc)
6413 changed ^= NETIF_F_TSO;
6414 }
6415
6416 /* everything changed successfully? */
6417 if ((dev->features ^ features) == changed)
6418 return 0;
6419 /* something went wrong. save changed features and return error */
6420 dev->features ^= changed;
6421 return -EIO;
6422 }
6423 EXPORT_SYMBOL_GPL(qeth_set_features);
6424
6425 netdev_features_t qeth_fix_features(struct net_device *dev,
6426 netdev_features_t features)
6427 {
6428 struct qeth_card *card = dev->ml_priv;
6429
6430 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6431 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6432 features &= ~NETIF_F_IP_CSUM;
6433 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6434 features &= ~NETIF_F_RXCSUM;
6435 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6436 features &= ~NETIF_F_TSO;
6437 /* if the card isn't up, remove features that require hw changes */
6438 if (card->state == CARD_STATE_DOWN ||
6439 card->state == CARD_STATE_RECOVER)
6440 features &= ~QETH_HW_FEATURES;
6441 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6442 return features;
6443 }
6444 EXPORT_SYMBOL_GPL(qeth_fix_features);
6445
6446 netdev_features_t qeth_features_check(struct sk_buff *skb,
6447 struct net_device *dev,
6448 netdev_features_t features)
6449 {
6450 /* GSO segmentation builds skbs with
6451 * a (small) linear part for the headers, and
6452 * page frags for the data.
6453 * Compared to a linear skb, the header-only part consumes an
6454 * additional buffer element. This reduces buffer utilization, and
6455 * hurts throughput. So compress small segments into one element.
6456 */
6457 if (netif_needs_gso(skb, features)) {
6458 /* match skb_segment(): */
6459 unsigned int doffset = skb->data - skb_mac_header(skb);
6460 unsigned int hsize = skb_shinfo(skb)->gso_size;
6461 unsigned int hroom = skb_headroom(skb);
6462
6463 /* linearize only if resulting skb allocations are order-0: */
6464 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6465 features &= ~NETIF_F_SG;
6466 }
6467
6468 return vlan_features_check(skb, features);
6469 }
6470 EXPORT_SYMBOL_GPL(qeth_features_check);
6471
6472 static int __init qeth_core_init(void)
6473 {
6474 int rc;
6475
6476 pr_info("loading core functions\n");
6477 INIT_LIST_HEAD(&qeth_core_card_list.list);
6478 INIT_LIST_HEAD(&qeth_dbf_list);
6479 rwlock_init(&qeth_core_card_list.rwlock);
6480 mutex_init(&qeth_mod_mutex);
6481
6482 qeth_wq = create_singlethread_workqueue("qeth_wq");
6483
6484 rc = qeth_register_dbf_views();
6485 if (rc)
6486 goto out_err;
6487 qeth_core_root_dev = root_device_register("qeth");
6488 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6489 if (rc)
6490 goto register_err;
6491 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6492 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6493 if (!qeth_core_header_cache) {
6494 rc = -ENOMEM;
6495 goto slab_err;
6496 }
6497 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6498 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6499 if (!qeth_qdio_outbuf_cache) {
6500 rc = -ENOMEM;
6501 goto cqslab_err;
6502 }
6503 rc = ccw_driver_register(&qeth_ccw_driver);
6504 if (rc)
6505 goto ccw_err;
6506 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6507 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6508 if (rc)
6509 goto ccwgroup_err;
6510
6511 return 0;
6512
6513 ccwgroup_err:
6514 ccw_driver_unregister(&qeth_ccw_driver);
6515 ccw_err:
6516 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6517 cqslab_err:
6518 kmem_cache_destroy(qeth_core_header_cache);
6519 slab_err:
6520 root_device_unregister(qeth_core_root_dev);
6521 register_err:
6522 qeth_unregister_dbf_views();
6523 out_err:
6524 pr_err("Initializing the qeth device driver failed\n");
6525 return rc;
6526 }
6527
6528 static void __exit qeth_core_exit(void)
6529 {
6530 qeth_clear_dbf_list();
6531 destroy_workqueue(qeth_wq);
6532 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6533 ccw_driver_unregister(&qeth_ccw_driver);
6534 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6535 kmem_cache_destroy(qeth_core_header_cache);
6536 root_device_unregister(qeth_core_root_dev);
6537 qeth_unregister_dbf_views();
6538 pr_info("core functions removed\n");
6539 }
6540
6541 module_init(qeth_core_init);
6542 module_exit(qeth_core_exit);
6543 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6544 MODULE_DESCRIPTION("qeth core functions");
6545 MODULE_LICENSE("GPL");
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