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Merge tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee139...
[deliverable/linux.git] / drivers / s390 / net / qeth_core_main.c
1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/ip.h>
18 #include <linux/tcp.h>
19 #include <linux/mii.h>
20 #include <linux/kthread.h>
21 #include <linux/slab.h>
22 #include <net/iucv/af_iucv.h>
23 #include <net/dsfield.h>
24
25 #include <asm/ebcdic.h>
26 #include <asm/chpid.h>
27 #include <asm/io.h>
28 #include <asm/sysinfo.h>
29 #include <asm/compat.h>
30
31 #include "qeth_core.h"
32
33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
34 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
35 /* N P A M L V H */
36 [QETH_DBF_SETUP] = {"qeth_setup",
37 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
38 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
39 &debug_sprintf_view, NULL},
40 [QETH_DBF_CTRL] = {"qeth_control",
41 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
42 };
43 EXPORT_SYMBOL_GPL(qeth_dbf);
44
45 struct qeth_card_list_struct qeth_core_card_list;
46 EXPORT_SYMBOL_GPL(qeth_core_card_list);
47 struct kmem_cache *qeth_core_header_cache;
48 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
49 static struct kmem_cache *qeth_qdio_outbuf_cache;
50
51 static struct device *qeth_core_root_dev;
52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
53 static struct lock_class_key qdio_out_skb_queue_key;
54 static struct mutex qeth_mod_mutex;
55
56 static void qeth_send_control_data_cb(struct qeth_channel *,
57 struct qeth_cmd_buffer *);
58 static int qeth_issue_next_read(struct qeth_card *);
59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
61 static void qeth_free_buffer_pool(struct qeth_card *);
62 static int qeth_qdio_establish(struct qeth_card *);
63 static void qeth_free_qdio_buffers(struct qeth_card *);
64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
65 struct qeth_qdio_out_buffer *buf,
66 enum iucv_tx_notify notification);
67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
69 struct qeth_qdio_out_buffer *buf,
70 enum qeth_qdio_buffer_states newbufstate);
71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
72
73 struct workqueue_struct *qeth_wq;
74 EXPORT_SYMBOL_GPL(qeth_wq);
75
76 int qeth_card_hw_is_reachable(struct qeth_card *card)
77 {
78 return (card->state == CARD_STATE_SOFTSETUP) ||
79 (card->state == CARD_STATE_UP);
80 }
81 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
82
83 static void qeth_close_dev_handler(struct work_struct *work)
84 {
85 struct qeth_card *card;
86
87 card = container_of(work, struct qeth_card, close_dev_work);
88 QETH_CARD_TEXT(card, 2, "cldevhdl");
89 rtnl_lock();
90 dev_close(card->dev);
91 rtnl_unlock();
92 ccwgroup_set_offline(card->gdev);
93 }
94
95 void qeth_close_dev(struct qeth_card *card)
96 {
97 QETH_CARD_TEXT(card, 2, "cldevsubm");
98 queue_work(qeth_wq, &card->close_dev_work);
99 }
100 EXPORT_SYMBOL_GPL(qeth_close_dev);
101
102 static inline const char *qeth_get_cardname(struct qeth_card *card)
103 {
104 if (card->info.guestlan) {
105 switch (card->info.type) {
106 case QETH_CARD_TYPE_OSD:
107 return " Virtual NIC QDIO";
108 case QETH_CARD_TYPE_IQD:
109 return " Virtual NIC Hiper";
110 case QETH_CARD_TYPE_OSM:
111 return " Virtual NIC QDIO - OSM";
112 case QETH_CARD_TYPE_OSX:
113 return " Virtual NIC QDIO - OSX";
114 default:
115 return " unknown";
116 }
117 } else {
118 switch (card->info.type) {
119 case QETH_CARD_TYPE_OSD:
120 return " OSD Express";
121 case QETH_CARD_TYPE_IQD:
122 return " HiperSockets";
123 case QETH_CARD_TYPE_OSN:
124 return " OSN QDIO";
125 case QETH_CARD_TYPE_OSM:
126 return " OSM QDIO";
127 case QETH_CARD_TYPE_OSX:
128 return " OSX QDIO";
129 default:
130 return " unknown";
131 }
132 }
133 return " n/a";
134 }
135
136 /* max length to be returned: 14 */
137 const char *qeth_get_cardname_short(struct qeth_card *card)
138 {
139 if (card->info.guestlan) {
140 switch (card->info.type) {
141 case QETH_CARD_TYPE_OSD:
142 return "Virt.NIC QDIO";
143 case QETH_CARD_TYPE_IQD:
144 return "Virt.NIC Hiper";
145 case QETH_CARD_TYPE_OSM:
146 return "Virt.NIC OSM";
147 case QETH_CARD_TYPE_OSX:
148 return "Virt.NIC OSX";
149 default:
150 return "unknown";
151 }
152 } else {
153 switch (card->info.type) {
154 case QETH_CARD_TYPE_OSD:
155 switch (card->info.link_type) {
156 case QETH_LINK_TYPE_FAST_ETH:
157 return "OSD_100";
158 case QETH_LINK_TYPE_HSTR:
159 return "HSTR";
160 case QETH_LINK_TYPE_GBIT_ETH:
161 return "OSD_1000";
162 case QETH_LINK_TYPE_10GBIT_ETH:
163 return "OSD_10GIG";
164 case QETH_LINK_TYPE_LANE_ETH100:
165 return "OSD_FE_LANE";
166 case QETH_LINK_TYPE_LANE_TR:
167 return "OSD_TR_LANE";
168 case QETH_LINK_TYPE_LANE_ETH1000:
169 return "OSD_GbE_LANE";
170 case QETH_LINK_TYPE_LANE:
171 return "OSD_ATM_LANE";
172 default:
173 return "OSD_Express";
174 }
175 case QETH_CARD_TYPE_IQD:
176 return "HiperSockets";
177 case QETH_CARD_TYPE_OSN:
178 return "OSN";
179 case QETH_CARD_TYPE_OSM:
180 return "OSM_1000";
181 case QETH_CARD_TYPE_OSX:
182 return "OSX_10GIG";
183 default:
184 return "unknown";
185 }
186 }
187 return "n/a";
188 }
189
190 void qeth_set_recovery_task(struct qeth_card *card)
191 {
192 card->recovery_task = current;
193 }
194 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
195
196 void qeth_clear_recovery_task(struct qeth_card *card)
197 {
198 card->recovery_task = NULL;
199 }
200 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
201
202 static bool qeth_is_recovery_task(const struct qeth_card *card)
203 {
204 return card->recovery_task == current;
205 }
206
207 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
208 int clear_start_mask)
209 {
210 unsigned long flags;
211
212 spin_lock_irqsave(&card->thread_mask_lock, flags);
213 card->thread_allowed_mask = threads;
214 if (clear_start_mask)
215 card->thread_start_mask &= threads;
216 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
217 wake_up(&card->wait_q);
218 }
219 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
220
221 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
222 {
223 unsigned long flags;
224 int rc = 0;
225
226 spin_lock_irqsave(&card->thread_mask_lock, flags);
227 rc = (card->thread_running_mask & threads);
228 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
229 return rc;
230 }
231 EXPORT_SYMBOL_GPL(qeth_threads_running);
232
233 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
234 {
235 if (qeth_is_recovery_task(card))
236 return 0;
237 return wait_event_interruptible(card->wait_q,
238 qeth_threads_running(card, threads) == 0);
239 }
240 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
241
242 void qeth_clear_working_pool_list(struct qeth_card *card)
243 {
244 struct qeth_buffer_pool_entry *pool_entry, *tmp;
245
246 QETH_CARD_TEXT(card, 5, "clwrklst");
247 list_for_each_entry_safe(pool_entry, tmp,
248 &card->qdio.in_buf_pool.entry_list, list){
249 list_del(&pool_entry->list);
250 }
251 }
252 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
253
254 static int qeth_alloc_buffer_pool(struct qeth_card *card)
255 {
256 struct qeth_buffer_pool_entry *pool_entry;
257 void *ptr;
258 int i, j;
259
260 QETH_CARD_TEXT(card, 5, "alocpool");
261 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
262 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
263 if (!pool_entry) {
264 qeth_free_buffer_pool(card);
265 return -ENOMEM;
266 }
267 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
268 ptr = (void *) __get_free_page(GFP_KERNEL);
269 if (!ptr) {
270 while (j > 0)
271 free_page((unsigned long)
272 pool_entry->elements[--j]);
273 kfree(pool_entry);
274 qeth_free_buffer_pool(card);
275 return -ENOMEM;
276 }
277 pool_entry->elements[j] = ptr;
278 }
279 list_add(&pool_entry->init_list,
280 &card->qdio.init_pool.entry_list);
281 }
282 return 0;
283 }
284
285 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
286 {
287 QETH_CARD_TEXT(card, 2, "realcbp");
288
289 if ((card->state != CARD_STATE_DOWN) &&
290 (card->state != CARD_STATE_RECOVER))
291 return -EPERM;
292
293 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
294 qeth_clear_working_pool_list(card);
295 qeth_free_buffer_pool(card);
296 card->qdio.in_buf_pool.buf_count = bufcnt;
297 card->qdio.init_pool.buf_count = bufcnt;
298 return qeth_alloc_buffer_pool(card);
299 }
300 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
301
302 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
303 {
304 if (!q)
305 return;
306
307 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
308 kfree(q);
309 }
310
311 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
312 {
313 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
314 int i;
315
316 if (!q)
317 return NULL;
318
319 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
320 kfree(q);
321 return NULL;
322 }
323
324 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
325 q->bufs[i].buffer = q->qdio_bufs[i];
326
327 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
328 return q;
329 }
330
331 static inline int qeth_cq_init(struct qeth_card *card)
332 {
333 int rc;
334
335 if (card->options.cq == QETH_CQ_ENABLED) {
336 QETH_DBF_TEXT(SETUP, 2, "cqinit");
337 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
338 QDIO_MAX_BUFFERS_PER_Q);
339 card->qdio.c_q->next_buf_to_init = 127;
340 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
341 card->qdio.no_in_queues - 1, 0,
342 127);
343 if (rc) {
344 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
345 goto out;
346 }
347 }
348 rc = 0;
349 out:
350 return rc;
351 }
352
353 static inline int qeth_alloc_cq(struct qeth_card *card)
354 {
355 int rc;
356
357 if (card->options.cq == QETH_CQ_ENABLED) {
358 int i;
359 struct qdio_outbuf_state *outbuf_states;
360
361 QETH_DBF_TEXT(SETUP, 2, "cqon");
362 card->qdio.c_q = qeth_alloc_qdio_queue();
363 if (!card->qdio.c_q) {
364 rc = -1;
365 goto kmsg_out;
366 }
367 card->qdio.no_in_queues = 2;
368 card->qdio.out_bufstates =
369 kzalloc(card->qdio.no_out_queues *
370 QDIO_MAX_BUFFERS_PER_Q *
371 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
372 outbuf_states = card->qdio.out_bufstates;
373 if (outbuf_states == NULL) {
374 rc = -1;
375 goto free_cq_out;
376 }
377 for (i = 0; i < card->qdio.no_out_queues; ++i) {
378 card->qdio.out_qs[i]->bufstates = outbuf_states;
379 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
380 }
381 } else {
382 QETH_DBF_TEXT(SETUP, 2, "nocq");
383 card->qdio.c_q = NULL;
384 card->qdio.no_in_queues = 1;
385 }
386 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
387 rc = 0;
388 out:
389 return rc;
390 free_cq_out:
391 qeth_free_qdio_queue(card->qdio.c_q);
392 card->qdio.c_q = NULL;
393 kmsg_out:
394 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
395 goto out;
396 }
397
398 static inline void qeth_free_cq(struct qeth_card *card)
399 {
400 if (card->qdio.c_q) {
401 --card->qdio.no_in_queues;
402 qeth_free_qdio_queue(card->qdio.c_q);
403 card->qdio.c_q = NULL;
404 }
405 kfree(card->qdio.out_bufstates);
406 card->qdio.out_bufstates = NULL;
407 }
408
409 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
410 int delayed) {
411 enum iucv_tx_notify n;
412
413 switch (sbalf15) {
414 case 0:
415 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
416 break;
417 case 4:
418 case 16:
419 case 17:
420 case 18:
421 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
422 TX_NOTIFY_UNREACHABLE;
423 break;
424 default:
425 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
426 TX_NOTIFY_GENERALERROR;
427 break;
428 }
429
430 return n;
431 }
432
433 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
434 int bidx, int forced_cleanup)
435 {
436 if (q->card->options.cq != QETH_CQ_ENABLED)
437 return;
438
439 if (q->bufs[bidx]->next_pending != NULL) {
440 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
441 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
442
443 while (c) {
444 if (forced_cleanup ||
445 atomic_read(&c->state) ==
446 QETH_QDIO_BUF_HANDLED_DELAYED) {
447 struct qeth_qdio_out_buffer *f = c;
448 QETH_CARD_TEXT(f->q->card, 5, "fp");
449 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
450 /* release here to avoid interleaving between
451 outbound tasklet and inbound tasklet
452 regarding notifications and lifecycle */
453 qeth_release_skbs(c);
454
455 c = f->next_pending;
456 WARN_ON_ONCE(head->next_pending != f);
457 head->next_pending = c;
458 kmem_cache_free(qeth_qdio_outbuf_cache, f);
459 } else {
460 head = c;
461 c = c->next_pending;
462 }
463
464 }
465 }
466 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
467 QETH_QDIO_BUF_HANDLED_DELAYED)) {
468 /* for recovery situations */
469 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
470 qeth_init_qdio_out_buf(q, bidx);
471 QETH_CARD_TEXT(q->card, 2, "clprecov");
472 }
473 }
474
475
476 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
477 unsigned long phys_aob_addr) {
478 struct qaob *aob;
479 struct qeth_qdio_out_buffer *buffer;
480 enum iucv_tx_notify notification;
481
482 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
483 QETH_CARD_TEXT(card, 5, "haob");
484 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
485 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
486 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
487
488 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
489 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
490 notification = TX_NOTIFY_OK;
491 } else {
492 WARN_ON_ONCE(atomic_read(&buffer->state) !=
493 QETH_QDIO_BUF_PENDING);
494 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
495 notification = TX_NOTIFY_DELAYED_OK;
496 }
497
498 if (aob->aorc != 0) {
499 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
500 notification = qeth_compute_cq_notification(aob->aorc, 1);
501 }
502 qeth_notify_skbs(buffer->q, buffer, notification);
503
504 buffer->aob = NULL;
505 qeth_clear_output_buffer(buffer->q, buffer,
506 QETH_QDIO_BUF_HANDLED_DELAYED);
507
508 /* from here on: do not touch buffer anymore */
509 qdio_release_aob(aob);
510 }
511
512 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
513 {
514 return card->options.cq == QETH_CQ_ENABLED &&
515 card->qdio.c_q != NULL &&
516 queue != 0 &&
517 queue == card->qdio.no_in_queues - 1;
518 }
519
520
521 static int qeth_issue_next_read(struct qeth_card *card)
522 {
523 int rc;
524 struct qeth_cmd_buffer *iob;
525
526 QETH_CARD_TEXT(card, 5, "issnxrd");
527 if (card->read.state != CH_STATE_UP)
528 return -EIO;
529 iob = qeth_get_buffer(&card->read);
530 if (!iob) {
531 dev_warn(&card->gdev->dev, "The qeth device driver "
532 "failed to recover an error on the device\n");
533 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
534 "available\n", dev_name(&card->gdev->dev));
535 return -ENOMEM;
536 }
537 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
538 QETH_CARD_TEXT(card, 6, "noirqpnd");
539 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
540 (addr_t) iob, 0, 0);
541 if (rc) {
542 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
543 "rc=%i\n", dev_name(&card->gdev->dev), rc);
544 atomic_set(&card->read.irq_pending, 0);
545 card->read_or_write_problem = 1;
546 qeth_schedule_recovery(card);
547 wake_up(&card->wait_q);
548 }
549 return rc;
550 }
551
552 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
553 {
554 struct qeth_reply *reply;
555
556 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
557 if (reply) {
558 atomic_set(&reply->refcnt, 1);
559 atomic_set(&reply->received, 0);
560 reply->card = card;
561 }
562 return reply;
563 }
564
565 static void qeth_get_reply(struct qeth_reply *reply)
566 {
567 WARN_ON(atomic_read(&reply->refcnt) <= 0);
568 atomic_inc(&reply->refcnt);
569 }
570
571 static void qeth_put_reply(struct qeth_reply *reply)
572 {
573 WARN_ON(atomic_read(&reply->refcnt) <= 0);
574 if (atomic_dec_and_test(&reply->refcnt))
575 kfree(reply);
576 }
577
578 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
579 struct qeth_card *card)
580 {
581 char *ipa_name;
582 int com = cmd->hdr.command;
583 ipa_name = qeth_get_ipa_cmd_name(com);
584 if (rc)
585 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
586 "x%X \"%s\"\n",
587 ipa_name, com, dev_name(&card->gdev->dev),
588 QETH_CARD_IFNAME(card), rc,
589 qeth_get_ipa_msg(rc));
590 else
591 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
592 ipa_name, com, dev_name(&card->gdev->dev),
593 QETH_CARD_IFNAME(card));
594 }
595
596 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
597 struct qeth_cmd_buffer *iob)
598 {
599 struct qeth_ipa_cmd *cmd = NULL;
600
601 QETH_CARD_TEXT(card, 5, "chkipad");
602 if (IS_IPA(iob->data)) {
603 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
604 if (IS_IPA_REPLY(cmd)) {
605 if (cmd->hdr.command != IPA_CMD_SETCCID &&
606 cmd->hdr.command != IPA_CMD_DELCCID &&
607 cmd->hdr.command != IPA_CMD_MODCCID &&
608 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
609 qeth_issue_ipa_msg(cmd,
610 cmd->hdr.return_code, card);
611 return cmd;
612 } else {
613 switch (cmd->hdr.command) {
614 case IPA_CMD_STOPLAN:
615 if (cmd->hdr.return_code ==
616 IPA_RC_VEPA_TO_VEB_TRANSITION) {
617 dev_err(&card->gdev->dev,
618 "Interface %s is down because the "
619 "adjacent port is no longer in "
620 "reflective relay mode\n",
621 QETH_CARD_IFNAME(card));
622 qeth_close_dev(card);
623 } else {
624 dev_warn(&card->gdev->dev,
625 "The link for interface %s on CHPID"
626 " 0x%X failed\n",
627 QETH_CARD_IFNAME(card),
628 card->info.chpid);
629 qeth_issue_ipa_msg(cmd,
630 cmd->hdr.return_code, card);
631 }
632 card->lan_online = 0;
633 if (card->dev && netif_carrier_ok(card->dev))
634 netif_carrier_off(card->dev);
635 return NULL;
636 case IPA_CMD_STARTLAN:
637 dev_info(&card->gdev->dev,
638 "The link for %s on CHPID 0x%X has"
639 " been restored\n",
640 QETH_CARD_IFNAME(card),
641 card->info.chpid);
642 netif_carrier_on(card->dev);
643 card->lan_online = 1;
644 if (card->info.hwtrap)
645 card->info.hwtrap = 2;
646 qeth_schedule_recovery(card);
647 return NULL;
648 case IPA_CMD_SETBRIDGEPORT:
649 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
650 if (card->discipline->control_event_handler
651 (card, cmd))
652 return cmd;
653 else
654 return NULL;
655 case IPA_CMD_MODCCID:
656 return cmd;
657 case IPA_CMD_REGISTER_LOCAL_ADDR:
658 QETH_CARD_TEXT(card, 3, "irla");
659 break;
660 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
661 QETH_CARD_TEXT(card, 3, "urla");
662 break;
663 default:
664 QETH_DBF_MESSAGE(2, "Received data is IPA "
665 "but not a reply!\n");
666 break;
667 }
668 }
669 }
670 return cmd;
671 }
672
673 void qeth_clear_ipacmd_list(struct qeth_card *card)
674 {
675 struct qeth_reply *reply, *r;
676 unsigned long flags;
677
678 QETH_CARD_TEXT(card, 4, "clipalst");
679
680 spin_lock_irqsave(&card->lock, flags);
681 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
682 qeth_get_reply(reply);
683 reply->rc = -EIO;
684 atomic_inc(&reply->received);
685 list_del_init(&reply->list);
686 wake_up(&reply->wait_q);
687 qeth_put_reply(reply);
688 }
689 spin_unlock_irqrestore(&card->lock, flags);
690 atomic_set(&card->write.irq_pending, 0);
691 }
692 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
693
694 static int qeth_check_idx_response(struct qeth_card *card,
695 unsigned char *buffer)
696 {
697 if (!buffer)
698 return 0;
699
700 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
701 if ((buffer[2] & 0xc0) == 0xc0) {
702 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
703 "with cause code 0x%02x%s\n",
704 buffer[4],
705 ((buffer[4] == 0x22) ?
706 " -- try another portname" : ""));
707 QETH_CARD_TEXT(card, 2, "ckidxres");
708 QETH_CARD_TEXT(card, 2, " idxterm");
709 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
710 if (buffer[4] == 0xf6) {
711 dev_err(&card->gdev->dev,
712 "The qeth device is not configured "
713 "for the OSI layer required by z/VM\n");
714 return -EPERM;
715 }
716 return -EIO;
717 }
718 return 0;
719 }
720
721 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
722 {
723 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
724 dev_get_drvdata(&cdev->dev))->dev);
725 return card;
726 }
727
728 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
729 __u32 len)
730 {
731 struct qeth_card *card;
732
733 card = CARD_FROM_CDEV(channel->ccwdev);
734 QETH_CARD_TEXT(card, 4, "setupccw");
735 if (channel == &card->read)
736 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
737 else
738 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
739 channel->ccw.count = len;
740 channel->ccw.cda = (__u32) __pa(iob);
741 }
742
743 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
744 {
745 __u8 index;
746
747 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
748 index = channel->io_buf_no;
749 do {
750 if (channel->iob[index].state == BUF_STATE_FREE) {
751 channel->iob[index].state = BUF_STATE_LOCKED;
752 channel->io_buf_no = (channel->io_buf_no + 1) %
753 QETH_CMD_BUFFER_NO;
754 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
755 return channel->iob + index;
756 }
757 index = (index + 1) % QETH_CMD_BUFFER_NO;
758 } while (index != channel->io_buf_no);
759
760 return NULL;
761 }
762
763 void qeth_release_buffer(struct qeth_channel *channel,
764 struct qeth_cmd_buffer *iob)
765 {
766 unsigned long flags;
767
768 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
769 spin_lock_irqsave(&channel->iob_lock, flags);
770 memset(iob->data, 0, QETH_BUFSIZE);
771 iob->state = BUF_STATE_FREE;
772 iob->callback = qeth_send_control_data_cb;
773 iob->rc = 0;
774 spin_unlock_irqrestore(&channel->iob_lock, flags);
775 wake_up(&channel->wait_q);
776 }
777 EXPORT_SYMBOL_GPL(qeth_release_buffer);
778
779 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
780 {
781 struct qeth_cmd_buffer *buffer = NULL;
782 unsigned long flags;
783
784 spin_lock_irqsave(&channel->iob_lock, flags);
785 buffer = __qeth_get_buffer(channel);
786 spin_unlock_irqrestore(&channel->iob_lock, flags);
787 return buffer;
788 }
789
790 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
791 {
792 struct qeth_cmd_buffer *buffer;
793 wait_event(channel->wait_q,
794 ((buffer = qeth_get_buffer(channel)) != NULL));
795 return buffer;
796 }
797 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
798
799 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
800 {
801 int cnt;
802
803 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
804 qeth_release_buffer(channel, &channel->iob[cnt]);
805 channel->buf_no = 0;
806 channel->io_buf_no = 0;
807 }
808 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
809
810 static void qeth_send_control_data_cb(struct qeth_channel *channel,
811 struct qeth_cmd_buffer *iob)
812 {
813 struct qeth_card *card;
814 struct qeth_reply *reply, *r;
815 struct qeth_ipa_cmd *cmd;
816 unsigned long flags;
817 int keep_reply;
818 int rc = 0;
819
820 card = CARD_FROM_CDEV(channel->ccwdev);
821 QETH_CARD_TEXT(card, 4, "sndctlcb");
822 rc = qeth_check_idx_response(card, iob->data);
823 switch (rc) {
824 case 0:
825 break;
826 case -EIO:
827 qeth_clear_ipacmd_list(card);
828 qeth_schedule_recovery(card);
829 /* fall through */
830 default:
831 goto out;
832 }
833
834 cmd = qeth_check_ipa_data(card, iob);
835 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
836 goto out;
837 /*in case of OSN : check if cmd is set */
838 if (card->info.type == QETH_CARD_TYPE_OSN &&
839 cmd &&
840 cmd->hdr.command != IPA_CMD_STARTLAN &&
841 card->osn_info.assist_cb != NULL) {
842 card->osn_info.assist_cb(card->dev, cmd);
843 goto out;
844 }
845
846 spin_lock_irqsave(&card->lock, flags);
847 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
848 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
849 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
850 qeth_get_reply(reply);
851 list_del_init(&reply->list);
852 spin_unlock_irqrestore(&card->lock, flags);
853 keep_reply = 0;
854 if (reply->callback != NULL) {
855 if (cmd) {
856 reply->offset = (__u16)((char *)cmd -
857 (char *)iob->data);
858 keep_reply = reply->callback(card,
859 reply,
860 (unsigned long)cmd);
861 } else
862 keep_reply = reply->callback(card,
863 reply,
864 (unsigned long)iob);
865 }
866 if (cmd)
867 reply->rc = (u16) cmd->hdr.return_code;
868 else if (iob->rc)
869 reply->rc = iob->rc;
870 if (keep_reply) {
871 spin_lock_irqsave(&card->lock, flags);
872 list_add_tail(&reply->list,
873 &card->cmd_waiter_list);
874 spin_unlock_irqrestore(&card->lock, flags);
875 } else {
876 atomic_inc(&reply->received);
877 wake_up(&reply->wait_q);
878 }
879 qeth_put_reply(reply);
880 goto out;
881 }
882 }
883 spin_unlock_irqrestore(&card->lock, flags);
884 out:
885 memcpy(&card->seqno.pdu_hdr_ack,
886 QETH_PDU_HEADER_SEQ_NO(iob->data),
887 QETH_SEQ_NO_LENGTH);
888 qeth_release_buffer(channel, iob);
889 }
890
891 static int qeth_setup_channel(struct qeth_channel *channel)
892 {
893 int cnt;
894
895 QETH_DBF_TEXT(SETUP, 2, "setupch");
896 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
897 channel->iob[cnt].data =
898 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
899 if (channel->iob[cnt].data == NULL)
900 break;
901 channel->iob[cnt].state = BUF_STATE_FREE;
902 channel->iob[cnt].channel = channel;
903 channel->iob[cnt].callback = qeth_send_control_data_cb;
904 channel->iob[cnt].rc = 0;
905 }
906 if (cnt < QETH_CMD_BUFFER_NO) {
907 while (cnt-- > 0)
908 kfree(channel->iob[cnt].data);
909 return -ENOMEM;
910 }
911 channel->buf_no = 0;
912 channel->io_buf_no = 0;
913 atomic_set(&channel->irq_pending, 0);
914 spin_lock_init(&channel->iob_lock);
915
916 init_waitqueue_head(&channel->wait_q);
917 return 0;
918 }
919
920 static int qeth_set_thread_start_bit(struct qeth_card *card,
921 unsigned long thread)
922 {
923 unsigned long flags;
924
925 spin_lock_irqsave(&card->thread_mask_lock, flags);
926 if (!(card->thread_allowed_mask & thread) ||
927 (card->thread_start_mask & thread)) {
928 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
929 return -EPERM;
930 }
931 card->thread_start_mask |= thread;
932 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
933 return 0;
934 }
935
936 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
937 {
938 unsigned long flags;
939
940 spin_lock_irqsave(&card->thread_mask_lock, flags);
941 card->thread_start_mask &= ~thread;
942 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
943 wake_up(&card->wait_q);
944 }
945 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
946
947 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
948 {
949 unsigned long flags;
950
951 spin_lock_irqsave(&card->thread_mask_lock, flags);
952 card->thread_running_mask &= ~thread;
953 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
954 wake_up(&card->wait_q);
955 }
956 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
957
958 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
959 {
960 unsigned long flags;
961 int rc = 0;
962
963 spin_lock_irqsave(&card->thread_mask_lock, flags);
964 if (card->thread_start_mask & thread) {
965 if ((card->thread_allowed_mask & thread) &&
966 !(card->thread_running_mask & thread)) {
967 rc = 1;
968 card->thread_start_mask &= ~thread;
969 card->thread_running_mask |= thread;
970 } else
971 rc = -EPERM;
972 }
973 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
974 return rc;
975 }
976
977 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
978 {
979 int rc = 0;
980
981 wait_event(card->wait_q,
982 (rc = __qeth_do_run_thread(card, thread)) >= 0);
983 return rc;
984 }
985 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
986
987 void qeth_schedule_recovery(struct qeth_card *card)
988 {
989 QETH_CARD_TEXT(card, 2, "startrec");
990 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
991 schedule_work(&card->kernel_thread_starter);
992 }
993 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
994
995 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
996 {
997 int dstat, cstat;
998 char *sense;
999 struct qeth_card *card;
1000
1001 sense = (char *) irb->ecw;
1002 cstat = irb->scsw.cmd.cstat;
1003 dstat = irb->scsw.cmd.dstat;
1004 card = CARD_FROM_CDEV(cdev);
1005
1006 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1007 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1008 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1009 QETH_CARD_TEXT(card, 2, "CGENCHK");
1010 dev_warn(&cdev->dev, "The qeth device driver "
1011 "failed to recover an error on the device\n");
1012 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1013 dev_name(&cdev->dev), dstat, cstat);
1014 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1015 16, 1, irb, 64, 1);
1016 return 1;
1017 }
1018
1019 if (dstat & DEV_STAT_UNIT_CHECK) {
1020 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1021 SENSE_RESETTING_EVENT_FLAG) {
1022 QETH_CARD_TEXT(card, 2, "REVIND");
1023 return 1;
1024 }
1025 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1026 SENSE_COMMAND_REJECT_FLAG) {
1027 QETH_CARD_TEXT(card, 2, "CMDREJi");
1028 return 1;
1029 }
1030 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1031 QETH_CARD_TEXT(card, 2, "AFFE");
1032 return 1;
1033 }
1034 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1035 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1036 return 0;
1037 }
1038 QETH_CARD_TEXT(card, 2, "DGENCHK");
1039 return 1;
1040 }
1041 return 0;
1042 }
1043
1044 static long __qeth_check_irb_error(struct ccw_device *cdev,
1045 unsigned long intparm, struct irb *irb)
1046 {
1047 struct qeth_card *card;
1048
1049 card = CARD_FROM_CDEV(cdev);
1050
1051 if (!card || !IS_ERR(irb))
1052 return 0;
1053
1054 switch (PTR_ERR(irb)) {
1055 case -EIO:
1056 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1057 dev_name(&cdev->dev));
1058 QETH_CARD_TEXT(card, 2, "ckirberr");
1059 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1060 break;
1061 case -ETIMEDOUT:
1062 dev_warn(&cdev->dev, "A hardware operation timed out"
1063 " on the device\n");
1064 QETH_CARD_TEXT(card, 2, "ckirberr");
1065 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1066 if (intparm == QETH_RCD_PARM) {
1067 if (card->data.ccwdev == cdev) {
1068 card->data.state = CH_STATE_DOWN;
1069 wake_up(&card->wait_q);
1070 }
1071 }
1072 break;
1073 default:
1074 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1075 dev_name(&cdev->dev), PTR_ERR(irb));
1076 QETH_CARD_TEXT(card, 2, "ckirberr");
1077 QETH_CARD_TEXT(card, 2, " rc???");
1078 }
1079 return PTR_ERR(irb);
1080 }
1081
1082 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1083 struct irb *irb)
1084 {
1085 int rc;
1086 int cstat, dstat;
1087 struct qeth_cmd_buffer *buffer;
1088 struct qeth_channel *channel;
1089 struct qeth_card *card;
1090 struct qeth_cmd_buffer *iob;
1091 __u8 index;
1092
1093 if (__qeth_check_irb_error(cdev, intparm, irb))
1094 return;
1095 cstat = irb->scsw.cmd.cstat;
1096 dstat = irb->scsw.cmd.dstat;
1097
1098 card = CARD_FROM_CDEV(cdev);
1099 if (!card)
1100 return;
1101
1102 QETH_CARD_TEXT(card, 5, "irq");
1103
1104 if (card->read.ccwdev == cdev) {
1105 channel = &card->read;
1106 QETH_CARD_TEXT(card, 5, "read");
1107 } else if (card->write.ccwdev == cdev) {
1108 channel = &card->write;
1109 QETH_CARD_TEXT(card, 5, "write");
1110 } else {
1111 channel = &card->data;
1112 QETH_CARD_TEXT(card, 5, "data");
1113 }
1114 atomic_set(&channel->irq_pending, 0);
1115
1116 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1117 channel->state = CH_STATE_STOPPED;
1118
1119 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1120 channel->state = CH_STATE_HALTED;
1121
1122 /*let's wake up immediately on data channel*/
1123 if ((channel == &card->data) && (intparm != 0) &&
1124 (intparm != QETH_RCD_PARM))
1125 goto out;
1126
1127 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1128 QETH_CARD_TEXT(card, 6, "clrchpar");
1129 /* we don't have to handle this further */
1130 intparm = 0;
1131 }
1132 if (intparm == QETH_HALT_CHANNEL_PARM) {
1133 QETH_CARD_TEXT(card, 6, "hltchpar");
1134 /* we don't have to handle this further */
1135 intparm = 0;
1136 }
1137 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1138 (dstat & DEV_STAT_UNIT_CHECK) ||
1139 (cstat)) {
1140 if (irb->esw.esw0.erw.cons) {
1141 dev_warn(&channel->ccwdev->dev,
1142 "The qeth device driver failed to recover "
1143 "an error on the device\n");
1144 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1145 "0x%X dstat 0x%X\n",
1146 dev_name(&channel->ccwdev->dev), cstat, dstat);
1147 print_hex_dump(KERN_WARNING, "qeth: irb ",
1148 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1149 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1150 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1151 }
1152 if (intparm == QETH_RCD_PARM) {
1153 channel->state = CH_STATE_DOWN;
1154 goto out;
1155 }
1156 rc = qeth_get_problem(cdev, irb);
1157 if (rc) {
1158 qeth_clear_ipacmd_list(card);
1159 qeth_schedule_recovery(card);
1160 goto out;
1161 }
1162 }
1163
1164 if (intparm == QETH_RCD_PARM) {
1165 channel->state = CH_STATE_RCD_DONE;
1166 goto out;
1167 }
1168 if (intparm) {
1169 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1170 buffer->state = BUF_STATE_PROCESSED;
1171 }
1172 if (channel == &card->data)
1173 return;
1174 if (channel == &card->read &&
1175 channel->state == CH_STATE_UP)
1176 qeth_issue_next_read(card);
1177
1178 iob = channel->iob;
1179 index = channel->buf_no;
1180 while (iob[index].state == BUF_STATE_PROCESSED) {
1181 if (iob[index].callback != NULL)
1182 iob[index].callback(channel, iob + index);
1183
1184 index = (index + 1) % QETH_CMD_BUFFER_NO;
1185 }
1186 channel->buf_no = index;
1187 out:
1188 wake_up(&card->wait_q);
1189 return;
1190 }
1191
1192 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1193 struct qeth_qdio_out_buffer *buf,
1194 enum iucv_tx_notify notification)
1195 {
1196 struct sk_buff *skb;
1197
1198 if (skb_queue_empty(&buf->skb_list))
1199 goto out;
1200 skb = skb_peek(&buf->skb_list);
1201 while (skb) {
1202 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1203 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1204 if (skb->protocol == ETH_P_AF_IUCV) {
1205 if (skb->sk) {
1206 struct iucv_sock *iucv = iucv_sk(skb->sk);
1207 iucv->sk_txnotify(skb, notification);
1208 }
1209 }
1210 if (skb_queue_is_last(&buf->skb_list, skb))
1211 skb = NULL;
1212 else
1213 skb = skb_queue_next(&buf->skb_list, skb);
1214 }
1215 out:
1216 return;
1217 }
1218
1219 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1220 {
1221 struct sk_buff *skb;
1222 struct iucv_sock *iucv;
1223 int notify_general_error = 0;
1224
1225 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1226 notify_general_error = 1;
1227
1228 /* release may never happen from within CQ tasklet scope */
1229 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1230
1231 skb = skb_dequeue(&buf->skb_list);
1232 while (skb) {
1233 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1234 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1235 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1236 if (skb->sk) {
1237 iucv = iucv_sk(skb->sk);
1238 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1239 }
1240 }
1241 atomic_dec(&skb->users);
1242 dev_kfree_skb_any(skb);
1243 skb = skb_dequeue(&buf->skb_list);
1244 }
1245 }
1246
1247 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1248 struct qeth_qdio_out_buffer *buf,
1249 enum qeth_qdio_buffer_states newbufstate)
1250 {
1251 int i;
1252
1253 /* is PCI flag set on buffer? */
1254 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1255 atomic_dec(&queue->set_pci_flags_count);
1256
1257 if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1258 qeth_release_skbs(buf);
1259 }
1260 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1261 if (buf->buffer->element[i].addr && buf->is_header[i])
1262 kmem_cache_free(qeth_core_header_cache,
1263 buf->buffer->element[i].addr);
1264 buf->is_header[i] = 0;
1265 buf->buffer->element[i].length = 0;
1266 buf->buffer->element[i].addr = NULL;
1267 buf->buffer->element[i].eflags = 0;
1268 buf->buffer->element[i].sflags = 0;
1269 }
1270 buf->buffer->element[15].eflags = 0;
1271 buf->buffer->element[15].sflags = 0;
1272 buf->next_element_to_fill = 0;
1273 atomic_set(&buf->state, newbufstate);
1274 }
1275
1276 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1277 {
1278 int j;
1279
1280 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1281 if (!q->bufs[j])
1282 continue;
1283 qeth_cleanup_handled_pending(q, j, 1);
1284 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1285 if (free) {
1286 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1287 q->bufs[j] = NULL;
1288 }
1289 }
1290 }
1291
1292 void qeth_clear_qdio_buffers(struct qeth_card *card)
1293 {
1294 int i;
1295
1296 QETH_CARD_TEXT(card, 2, "clearqdbf");
1297 /* clear outbound buffers to free skbs */
1298 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1299 if (card->qdio.out_qs[i]) {
1300 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1301 }
1302 }
1303 }
1304 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1305
1306 static void qeth_free_buffer_pool(struct qeth_card *card)
1307 {
1308 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1309 int i = 0;
1310 list_for_each_entry_safe(pool_entry, tmp,
1311 &card->qdio.init_pool.entry_list, init_list){
1312 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1313 free_page((unsigned long)pool_entry->elements[i]);
1314 list_del(&pool_entry->init_list);
1315 kfree(pool_entry);
1316 }
1317 }
1318
1319 static void qeth_clean_channel(struct qeth_channel *channel)
1320 {
1321 int cnt;
1322
1323 QETH_DBF_TEXT(SETUP, 2, "freech");
1324 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1325 kfree(channel->iob[cnt].data);
1326 }
1327
1328 static void qeth_set_single_write_queues(struct qeth_card *card)
1329 {
1330 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1331 (card->qdio.no_out_queues == 4))
1332 qeth_free_qdio_buffers(card);
1333
1334 card->qdio.no_out_queues = 1;
1335 if (card->qdio.default_out_queue != 0)
1336 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1337
1338 card->qdio.default_out_queue = 0;
1339 }
1340
1341 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1342 {
1343 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1344 (card->qdio.no_out_queues == 1)) {
1345 qeth_free_qdio_buffers(card);
1346 card->qdio.default_out_queue = 2;
1347 }
1348 card->qdio.no_out_queues = 4;
1349 }
1350
1351 static void qeth_update_from_chp_desc(struct qeth_card *card)
1352 {
1353 struct ccw_device *ccwdev;
1354 struct channel_path_desc *chp_dsc;
1355
1356 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1357
1358 ccwdev = card->data.ccwdev;
1359 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1360 if (!chp_dsc)
1361 goto out;
1362
1363 card->info.func_level = 0x4100 + chp_dsc->desc;
1364 if (card->info.type == QETH_CARD_TYPE_IQD)
1365 goto out;
1366
1367 /* CHPP field bit 6 == 1 -> single queue */
1368 if ((chp_dsc->chpp & 0x02) == 0x02)
1369 qeth_set_single_write_queues(card);
1370 else
1371 qeth_set_multiple_write_queues(card);
1372 out:
1373 kfree(chp_dsc);
1374 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1375 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1376 }
1377
1378 static void qeth_init_qdio_info(struct qeth_card *card)
1379 {
1380 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1381 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1382 /* inbound */
1383 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1384 if (card->info.type == QETH_CARD_TYPE_IQD)
1385 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1386 else
1387 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1388 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1389 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1390 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1391 }
1392
1393 static void qeth_set_intial_options(struct qeth_card *card)
1394 {
1395 card->options.route4.type = NO_ROUTER;
1396 card->options.route6.type = NO_ROUTER;
1397 card->options.fake_broadcast = 0;
1398 card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1399 card->options.performance_stats = 0;
1400 card->options.rx_sg_cb = QETH_RX_SG_CB;
1401 card->options.isolation = ISOLATION_MODE_NONE;
1402 card->options.cq = QETH_CQ_DISABLED;
1403 }
1404
1405 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1406 {
1407 unsigned long flags;
1408 int rc = 0;
1409
1410 spin_lock_irqsave(&card->thread_mask_lock, flags);
1411 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1412 (u8) card->thread_start_mask,
1413 (u8) card->thread_allowed_mask,
1414 (u8) card->thread_running_mask);
1415 rc = (card->thread_start_mask & thread);
1416 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1417 return rc;
1418 }
1419
1420 static void qeth_start_kernel_thread(struct work_struct *work)
1421 {
1422 struct task_struct *ts;
1423 struct qeth_card *card = container_of(work, struct qeth_card,
1424 kernel_thread_starter);
1425 QETH_CARD_TEXT(card , 2, "strthrd");
1426
1427 if (card->read.state != CH_STATE_UP &&
1428 card->write.state != CH_STATE_UP)
1429 return;
1430 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1431 ts = kthread_run(card->discipline->recover, (void *)card,
1432 "qeth_recover");
1433 if (IS_ERR(ts)) {
1434 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1435 qeth_clear_thread_running_bit(card,
1436 QETH_RECOVER_THREAD);
1437 }
1438 }
1439 }
1440
1441 static void qeth_buffer_reclaim_work(struct work_struct *);
1442 static int qeth_setup_card(struct qeth_card *card)
1443 {
1444
1445 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1446 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1447
1448 card->read.state = CH_STATE_DOWN;
1449 card->write.state = CH_STATE_DOWN;
1450 card->data.state = CH_STATE_DOWN;
1451 card->state = CARD_STATE_DOWN;
1452 card->lan_online = 0;
1453 card->read_or_write_problem = 0;
1454 card->dev = NULL;
1455 spin_lock_init(&card->vlanlock);
1456 spin_lock_init(&card->mclock);
1457 spin_lock_init(&card->lock);
1458 spin_lock_init(&card->ip_lock);
1459 spin_lock_init(&card->thread_mask_lock);
1460 mutex_init(&card->conf_mutex);
1461 mutex_init(&card->discipline_mutex);
1462 card->thread_start_mask = 0;
1463 card->thread_allowed_mask = 0;
1464 card->thread_running_mask = 0;
1465 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1466 INIT_LIST_HEAD(&card->ip_list);
1467 INIT_LIST_HEAD(card->ip_tbd_list);
1468 INIT_LIST_HEAD(&card->cmd_waiter_list);
1469 init_waitqueue_head(&card->wait_q);
1470 /* initial options */
1471 qeth_set_intial_options(card);
1472 /* IP address takeover */
1473 INIT_LIST_HEAD(&card->ipato.entries);
1474 card->ipato.enabled = 0;
1475 card->ipato.invert4 = 0;
1476 card->ipato.invert6 = 0;
1477 /* init QDIO stuff */
1478 qeth_init_qdio_info(card);
1479 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1480 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1481 return 0;
1482 }
1483
1484 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1485 {
1486 struct qeth_card *card = container_of(slr, struct qeth_card,
1487 qeth_service_level);
1488 if (card->info.mcl_level[0])
1489 seq_printf(m, "qeth: %s firmware level %s\n",
1490 CARD_BUS_ID(card), card->info.mcl_level);
1491 }
1492
1493 static struct qeth_card *qeth_alloc_card(void)
1494 {
1495 struct qeth_card *card;
1496
1497 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1498 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1499 if (!card)
1500 goto out;
1501 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1502 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1503 if (!card->ip_tbd_list) {
1504 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1505 goto out_card;
1506 }
1507 if (qeth_setup_channel(&card->read))
1508 goto out_ip;
1509 if (qeth_setup_channel(&card->write))
1510 goto out_channel;
1511 card->options.layer2 = -1;
1512 card->qeth_service_level.seq_print = qeth_core_sl_print;
1513 register_service_level(&card->qeth_service_level);
1514 return card;
1515
1516 out_channel:
1517 qeth_clean_channel(&card->read);
1518 out_ip:
1519 kfree(card->ip_tbd_list);
1520 out_card:
1521 kfree(card);
1522 out:
1523 return NULL;
1524 }
1525
1526 static int qeth_determine_card_type(struct qeth_card *card)
1527 {
1528 int i = 0;
1529
1530 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1531
1532 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1533 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1534 while (known_devices[i][QETH_DEV_MODEL_IND]) {
1535 if ((CARD_RDEV(card)->id.dev_type ==
1536 known_devices[i][QETH_DEV_TYPE_IND]) &&
1537 (CARD_RDEV(card)->id.dev_model ==
1538 known_devices[i][QETH_DEV_MODEL_IND])) {
1539 card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1540 card->qdio.no_out_queues =
1541 known_devices[i][QETH_QUEUE_NO_IND];
1542 card->qdio.no_in_queues = 1;
1543 card->info.is_multicast_different =
1544 known_devices[i][QETH_MULTICAST_IND];
1545 qeth_update_from_chp_desc(card);
1546 return 0;
1547 }
1548 i++;
1549 }
1550 card->info.type = QETH_CARD_TYPE_UNKNOWN;
1551 dev_err(&card->gdev->dev, "The adapter hardware is of an "
1552 "unknown type\n");
1553 return -ENOENT;
1554 }
1555
1556 static int qeth_clear_channel(struct qeth_channel *channel)
1557 {
1558 unsigned long flags;
1559 struct qeth_card *card;
1560 int rc;
1561
1562 card = CARD_FROM_CDEV(channel->ccwdev);
1563 QETH_CARD_TEXT(card, 3, "clearch");
1564 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1565 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1566 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1567
1568 if (rc)
1569 return rc;
1570 rc = wait_event_interruptible_timeout(card->wait_q,
1571 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1572 if (rc == -ERESTARTSYS)
1573 return rc;
1574 if (channel->state != CH_STATE_STOPPED)
1575 return -ETIME;
1576 channel->state = CH_STATE_DOWN;
1577 return 0;
1578 }
1579
1580 static int qeth_halt_channel(struct qeth_channel *channel)
1581 {
1582 unsigned long flags;
1583 struct qeth_card *card;
1584 int rc;
1585
1586 card = CARD_FROM_CDEV(channel->ccwdev);
1587 QETH_CARD_TEXT(card, 3, "haltch");
1588 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1589 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1590 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1591
1592 if (rc)
1593 return rc;
1594 rc = wait_event_interruptible_timeout(card->wait_q,
1595 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1596 if (rc == -ERESTARTSYS)
1597 return rc;
1598 if (channel->state != CH_STATE_HALTED)
1599 return -ETIME;
1600 return 0;
1601 }
1602
1603 static int qeth_halt_channels(struct qeth_card *card)
1604 {
1605 int rc1 = 0, rc2 = 0, rc3 = 0;
1606
1607 QETH_CARD_TEXT(card, 3, "haltchs");
1608 rc1 = qeth_halt_channel(&card->read);
1609 rc2 = qeth_halt_channel(&card->write);
1610 rc3 = qeth_halt_channel(&card->data);
1611 if (rc1)
1612 return rc1;
1613 if (rc2)
1614 return rc2;
1615 return rc3;
1616 }
1617
1618 static int qeth_clear_channels(struct qeth_card *card)
1619 {
1620 int rc1 = 0, rc2 = 0, rc3 = 0;
1621
1622 QETH_CARD_TEXT(card, 3, "clearchs");
1623 rc1 = qeth_clear_channel(&card->read);
1624 rc2 = qeth_clear_channel(&card->write);
1625 rc3 = qeth_clear_channel(&card->data);
1626 if (rc1)
1627 return rc1;
1628 if (rc2)
1629 return rc2;
1630 return rc3;
1631 }
1632
1633 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1634 {
1635 int rc = 0;
1636
1637 QETH_CARD_TEXT(card, 3, "clhacrd");
1638
1639 if (halt)
1640 rc = qeth_halt_channels(card);
1641 if (rc)
1642 return rc;
1643 return qeth_clear_channels(card);
1644 }
1645
1646 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1647 {
1648 int rc = 0;
1649
1650 QETH_CARD_TEXT(card, 3, "qdioclr");
1651 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1652 QETH_QDIO_CLEANING)) {
1653 case QETH_QDIO_ESTABLISHED:
1654 if (card->info.type == QETH_CARD_TYPE_IQD)
1655 rc = qdio_shutdown(CARD_DDEV(card),
1656 QDIO_FLAG_CLEANUP_USING_HALT);
1657 else
1658 rc = qdio_shutdown(CARD_DDEV(card),
1659 QDIO_FLAG_CLEANUP_USING_CLEAR);
1660 if (rc)
1661 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1662 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1663 break;
1664 case QETH_QDIO_CLEANING:
1665 return rc;
1666 default:
1667 break;
1668 }
1669 rc = qeth_clear_halt_card(card, use_halt);
1670 if (rc)
1671 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1672 card->state = CARD_STATE_DOWN;
1673 return rc;
1674 }
1675 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1676
1677 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1678 int *length)
1679 {
1680 struct ciw *ciw;
1681 char *rcd_buf;
1682 int ret;
1683 struct qeth_channel *channel = &card->data;
1684 unsigned long flags;
1685
1686 /*
1687 * scan for RCD command in extended SenseID data
1688 */
1689 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1690 if (!ciw || ciw->cmd == 0)
1691 return -EOPNOTSUPP;
1692 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1693 if (!rcd_buf)
1694 return -ENOMEM;
1695
1696 channel->ccw.cmd_code = ciw->cmd;
1697 channel->ccw.cda = (__u32) __pa(rcd_buf);
1698 channel->ccw.count = ciw->count;
1699 channel->ccw.flags = CCW_FLAG_SLI;
1700 channel->state = CH_STATE_RCD;
1701 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1702 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1703 QETH_RCD_PARM, LPM_ANYPATH, 0,
1704 QETH_RCD_TIMEOUT);
1705 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1706 if (!ret)
1707 wait_event(card->wait_q,
1708 (channel->state == CH_STATE_RCD_DONE ||
1709 channel->state == CH_STATE_DOWN));
1710 if (channel->state == CH_STATE_DOWN)
1711 ret = -EIO;
1712 else
1713 channel->state = CH_STATE_DOWN;
1714 if (ret) {
1715 kfree(rcd_buf);
1716 *buffer = NULL;
1717 *length = 0;
1718 } else {
1719 *length = ciw->count;
1720 *buffer = rcd_buf;
1721 }
1722 return ret;
1723 }
1724
1725 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1726 {
1727 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1728 card->info.chpid = prcd[30];
1729 card->info.unit_addr2 = prcd[31];
1730 card->info.cula = prcd[63];
1731 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1732 (prcd[0x11] == _ascebc['M']));
1733 }
1734
1735 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1736 {
1737 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1738
1739 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1740 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1741 card->info.blkt.time_total = 0;
1742 card->info.blkt.inter_packet = 0;
1743 card->info.blkt.inter_packet_jumbo = 0;
1744 } else {
1745 card->info.blkt.time_total = 250;
1746 card->info.blkt.inter_packet = 5;
1747 card->info.blkt.inter_packet_jumbo = 15;
1748 }
1749 }
1750
1751 static void qeth_init_tokens(struct qeth_card *card)
1752 {
1753 card->token.issuer_rm_w = 0x00010103UL;
1754 card->token.cm_filter_w = 0x00010108UL;
1755 card->token.cm_connection_w = 0x0001010aUL;
1756 card->token.ulp_filter_w = 0x0001010bUL;
1757 card->token.ulp_connection_w = 0x0001010dUL;
1758 }
1759
1760 static void qeth_init_func_level(struct qeth_card *card)
1761 {
1762 switch (card->info.type) {
1763 case QETH_CARD_TYPE_IQD:
1764 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1765 break;
1766 case QETH_CARD_TYPE_OSD:
1767 case QETH_CARD_TYPE_OSN:
1768 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1769 break;
1770 default:
1771 break;
1772 }
1773 }
1774
1775 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1776 void (*idx_reply_cb)(struct qeth_channel *,
1777 struct qeth_cmd_buffer *))
1778 {
1779 struct qeth_cmd_buffer *iob;
1780 unsigned long flags;
1781 int rc;
1782 struct qeth_card *card;
1783
1784 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1785 card = CARD_FROM_CDEV(channel->ccwdev);
1786 iob = qeth_get_buffer(channel);
1787 iob->callback = idx_reply_cb;
1788 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1789 channel->ccw.count = QETH_BUFSIZE;
1790 channel->ccw.cda = (__u32) __pa(iob->data);
1791
1792 wait_event(card->wait_q,
1793 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1794 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1795 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1796 rc = ccw_device_start(channel->ccwdev,
1797 &channel->ccw, (addr_t) iob, 0, 0);
1798 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1799
1800 if (rc) {
1801 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1802 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1803 atomic_set(&channel->irq_pending, 0);
1804 wake_up(&card->wait_q);
1805 return rc;
1806 }
1807 rc = wait_event_interruptible_timeout(card->wait_q,
1808 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1809 if (rc == -ERESTARTSYS)
1810 return rc;
1811 if (channel->state != CH_STATE_UP) {
1812 rc = -ETIME;
1813 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1814 qeth_clear_cmd_buffers(channel);
1815 } else
1816 rc = 0;
1817 return rc;
1818 }
1819
1820 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1821 void (*idx_reply_cb)(struct qeth_channel *,
1822 struct qeth_cmd_buffer *))
1823 {
1824 struct qeth_card *card;
1825 struct qeth_cmd_buffer *iob;
1826 unsigned long flags;
1827 __u16 temp;
1828 __u8 tmp;
1829 int rc;
1830 struct ccw_dev_id temp_devid;
1831
1832 card = CARD_FROM_CDEV(channel->ccwdev);
1833
1834 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1835
1836 iob = qeth_get_buffer(channel);
1837 iob->callback = idx_reply_cb;
1838 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1839 channel->ccw.count = IDX_ACTIVATE_SIZE;
1840 channel->ccw.cda = (__u32) __pa(iob->data);
1841 if (channel == &card->write) {
1842 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1843 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1844 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1845 card->seqno.trans_hdr++;
1846 } else {
1847 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1848 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1849 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1850 }
1851 tmp = ((__u8)card->info.portno) | 0x80;
1852 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1853 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1854 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1855 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1856 &card->info.func_level, sizeof(__u16));
1857 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1858 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1859 temp = (card->info.cula << 8) + card->info.unit_addr2;
1860 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1861
1862 wait_event(card->wait_q,
1863 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1864 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1865 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1866 rc = ccw_device_start(channel->ccwdev,
1867 &channel->ccw, (addr_t) iob, 0, 0);
1868 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1869
1870 if (rc) {
1871 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1872 rc);
1873 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1874 atomic_set(&channel->irq_pending, 0);
1875 wake_up(&card->wait_q);
1876 return rc;
1877 }
1878 rc = wait_event_interruptible_timeout(card->wait_q,
1879 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1880 if (rc == -ERESTARTSYS)
1881 return rc;
1882 if (channel->state != CH_STATE_ACTIVATING) {
1883 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1884 " failed to recover an error on the device\n");
1885 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1886 dev_name(&channel->ccwdev->dev));
1887 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1888 qeth_clear_cmd_buffers(channel);
1889 return -ETIME;
1890 }
1891 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1892 }
1893
1894 static int qeth_peer_func_level(int level)
1895 {
1896 if ((level & 0xff) == 8)
1897 return (level & 0xff) + 0x400;
1898 if (((level >> 8) & 3) == 1)
1899 return (level & 0xff) + 0x200;
1900 return level;
1901 }
1902
1903 static void qeth_idx_write_cb(struct qeth_channel *channel,
1904 struct qeth_cmd_buffer *iob)
1905 {
1906 struct qeth_card *card;
1907 __u16 temp;
1908
1909 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1910
1911 if (channel->state == CH_STATE_DOWN) {
1912 channel->state = CH_STATE_ACTIVATING;
1913 goto out;
1914 }
1915 card = CARD_FROM_CDEV(channel->ccwdev);
1916
1917 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1918 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1919 dev_err(&card->write.ccwdev->dev,
1920 "The adapter is used exclusively by another "
1921 "host\n");
1922 else
1923 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1924 " negative reply\n",
1925 dev_name(&card->write.ccwdev->dev));
1926 goto out;
1927 }
1928 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1929 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1930 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1931 "function level mismatch (sent: 0x%x, received: "
1932 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1933 card->info.func_level, temp);
1934 goto out;
1935 }
1936 channel->state = CH_STATE_UP;
1937 out:
1938 qeth_release_buffer(channel, iob);
1939 }
1940
1941 static void qeth_idx_read_cb(struct qeth_channel *channel,
1942 struct qeth_cmd_buffer *iob)
1943 {
1944 struct qeth_card *card;
1945 __u16 temp;
1946
1947 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1948 if (channel->state == CH_STATE_DOWN) {
1949 channel->state = CH_STATE_ACTIVATING;
1950 goto out;
1951 }
1952
1953 card = CARD_FROM_CDEV(channel->ccwdev);
1954 if (qeth_check_idx_response(card, iob->data))
1955 goto out;
1956
1957 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1958 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1959 case QETH_IDX_ACT_ERR_EXCL:
1960 dev_err(&card->write.ccwdev->dev,
1961 "The adapter is used exclusively by another "
1962 "host\n");
1963 break;
1964 case QETH_IDX_ACT_ERR_AUTH:
1965 case QETH_IDX_ACT_ERR_AUTH_USER:
1966 dev_err(&card->read.ccwdev->dev,
1967 "Setting the device online failed because of "
1968 "insufficient authorization\n");
1969 break;
1970 default:
1971 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1972 " negative reply\n",
1973 dev_name(&card->read.ccwdev->dev));
1974 }
1975 QETH_CARD_TEXT_(card, 2, "idxread%c",
1976 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1977 goto out;
1978 }
1979
1980 /**
1981 * * temporary fix for microcode bug
1982 * * to revert it,replace OR by AND
1983 * */
1984 if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1985 (card->info.type == QETH_CARD_TYPE_OSD))
1986 card->info.portname_required = 1;
1987
1988 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1989 if (temp != qeth_peer_func_level(card->info.func_level)) {
1990 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1991 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1992 dev_name(&card->read.ccwdev->dev),
1993 card->info.func_level, temp);
1994 goto out;
1995 }
1996 memcpy(&card->token.issuer_rm_r,
1997 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1998 QETH_MPC_TOKEN_LENGTH);
1999 memcpy(&card->info.mcl_level[0],
2000 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2001 channel->state = CH_STATE_UP;
2002 out:
2003 qeth_release_buffer(channel, iob);
2004 }
2005
2006 void qeth_prepare_control_data(struct qeth_card *card, int len,
2007 struct qeth_cmd_buffer *iob)
2008 {
2009 qeth_setup_ccw(&card->write, iob->data, len);
2010 iob->callback = qeth_release_buffer;
2011
2012 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2013 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2014 card->seqno.trans_hdr++;
2015 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2016 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2017 card->seqno.pdu_hdr++;
2018 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2019 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2020 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2021 }
2022 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2023
2024 int qeth_send_control_data(struct qeth_card *card, int len,
2025 struct qeth_cmd_buffer *iob,
2026 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2027 unsigned long),
2028 void *reply_param)
2029 {
2030 int rc;
2031 unsigned long flags;
2032 struct qeth_reply *reply = NULL;
2033 unsigned long timeout, event_timeout;
2034 struct qeth_ipa_cmd *cmd;
2035
2036 QETH_CARD_TEXT(card, 2, "sendctl");
2037
2038 if (card->read_or_write_problem) {
2039 qeth_release_buffer(iob->channel, iob);
2040 return -EIO;
2041 }
2042 reply = qeth_alloc_reply(card);
2043 if (!reply) {
2044 return -ENOMEM;
2045 }
2046 reply->callback = reply_cb;
2047 reply->param = reply_param;
2048 if (card->state == CARD_STATE_DOWN)
2049 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2050 else
2051 reply->seqno = card->seqno.ipa++;
2052 init_waitqueue_head(&reply->wait_q);
2053 spin_lock_irqsave(&card->lock, flags);
2054 list_add_tail(&reply->list, &card->cmd_waiter_list);
2055 spin_unlock_irqrestore(&card->lock, flags);
2056 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2057
2058 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2059 qeth_prepare_control_data(card, len, iob);
2060
2061 if (IS_IPA(iob->data))
2062 event_timeout = QETH_IPA_TIMEOUT;
2063 else
2064 event_timeout = QETH_TIMEOUT;
2065 timeout = jiffies + event_timeout;
2066
2067 QETH_CARD_TEXT(card, 6, "noirqpnd");
2068 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2069 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2070 (addr_t) iob, 0, 0);
2071 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2072 if (rc) {
2073 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2074 "ccw_device_start rc = %i\n",
2075 dev_name(&card->write.ccwdev->dev), rc);
2076 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2077 spin_lock_irqsave(&card->lock, flags);
2078 list_del_init(&reply->list);
2079 qeth_put_reply(reply);
2080 spin_unlock_irqrestore(&card->lock, flags);
2081 qeth_release_buffer(iob->channel, iob);
2082 atomic_set(&card->write.irq_pending, 0);
2083 wake_up(&card->wait_q);
2084 return rc;
2085 }
2086
2087 /* we have only one long running ipassist, since we can ensure
2088 process context of this command we can sleep */
2089 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2090 if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2091 (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2092 if (!wait_event_timeout(reply->wait_q,
2093 atomic_read(&reply->received), event_timeout))
2094 goto time_err;
2095 } else {
2096 while (!atomic_read(&reply->received)) {
2097 if (time_after(jiffies, timeout))
2098 goto time_err;
2099 cpu_relax();
2100 }
2101 }
2102
2103 if (reply->rc == -EIO)
2104 goto error;
2105 rc = reply->rc;
2106 qeth_put_reply(reply);
2107 return rc;
2108
2109 time_err:
2110 reply->rc = -ETIME;
2111 spin_lock_irqsave(&reply->card->lock, flags);
2112 list_del_init(&reply->list);
2113 spin_unlock_irqrestore(&reply->card->lock, flags);
2114 atomic_inc(&reply->received);
2115 error:
2116 atomic_set(&card->write.irq_pending, 0);
2117 qeth_release_buffer(iob->channel, iob);
2118 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2119 rc = reply->rc;
2120 qeth_put_reply(reply);
2121 return rc;
2122 }
2123 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2124
2125 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2126 unsigned long data)
2127 {
2128 struct qeth_cmd_buffer *iob;
2129
2130 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2131
2132 iob = (struct qeth_cmd_buffer *) data;
2133 memcpy(&card->token.cm_filter_r,
2134 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2135 QETH_MPC_TOKEN_LENGTH);
2136 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2137 return 0;
2138 }
2139
2140 static int qeth_cm_enable(struct qeth_card *card)
2141 {
2142 int rc;
2143 struct qeth_cmd_buffer *iob;
2144
2145 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2146
2147 iob = qeth_wait_for_buffer(&card->write);
2148 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2149 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2150 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2151 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2152 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2153
2154 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2155 qeth_cm_enable_cb, NULL);
2156 return rc;
2157 }
2158
2159 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2160 unsigned long data)
2161 {
2162
2163 struct qeth_cmd_buffer *iob;
2164
2165 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2166
2167 iob = (struct qeth_cmd_buffer *) data;
2168 memcpy(&card->token.cm_connection_r,
2169 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2170 QETH_MPC_TOKEN_LENGTH);
2171 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2172 return 0;
2173 }
2174
2175 static int qeth_cm_setup(struct qeth_card *card)
2176 {
2177 int rc;
2178 struct qeth_cmd_buffer *iob;
2179
2180 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2181
2182 iob = qeth_wait_for_buffer(&card->write);
2183 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2184 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2185 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2186 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2187 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2188 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2189 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2190 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2191 qeth_cm_setup_cb, NULL);
2192 return rc;
2193
2194 }
2195
2196 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2197 {
2198 switch (card->info.type) {
2199 case QETH_CARD_TYPE_UNKNOWN:
2200 return 1500;
2201 case QETH_CARD_TYPE_IQD:
2202 return card->info.max_mtu;
2203 case QETH_CARD_TYPE_OSD:
2204 switch (card->info.link_type) {
2205 case QETH_LINK_TYPE_HSTR:
2206 case QETH_LINK_TYPE_LANE_TR:
2207 return 2000;
2208 default:
2209 return card->options.layer2 ? 1500 : 1492;
2210 }
2211 case QETH_CARD_TYPE_OSM:
2212 case QETH_CARD_TYPE_OSX:
2213 return card->options.layer2 ? 1500 : 1492;
2214 default:
2215 return 1500;
2216 }
2217 }
2218
2219 static inline int qeth_get_mtu_outof_framesize(int framesize)
2220 {
2221 switch (framesize) {
2222 case 0x4000:
2223 return 8192;
2224 case 0x6000:
2225 return 16384;
2226 case 0xa000:
2227 return 32768;
2228 case 0xffff:
2229 return 57344;
2230 default:
2231 return 0;
2232 }
2233 }
2234
2235 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2236 {
2237 switch (card->info.type) {
2238 case QETH_CARD_TYPE_OSD:
2239 case QETH_CARD_TYPE_OSM:
2240 case QETH_CARD_TYPE_OSX:
2241 case QETH_CARD_TYPE_IQD:
2242 return ((mtu >= 576) &&
2243 (mtu <= card->info.max_mtu));
2244 case QETH_CARD_TYPE_OSN:
2245 case QETH_CARD_TYPE_UNKNOWN:
2246 default:
2247 return 1;
2248 }
2249 }
2250
2251 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2252 unsigned long data)
2253 {
2254
2255 __u16 mtu, framesize;
2256 __u16 len;
2257 __u8 link_type;
2258 struct qeth_cmd_buffer *iob;
2259
2260 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2261
2262 iob = (struct qeth_cmd_buffer *) data;
2263 memcpy(&card->token.ulp_filter_r,
2264 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2265 QETH_MPC_TOKEN_LENGTH);
2266 if (card->info.type == QETH_CARD_TYPE_IQD) {
2267 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2268 mtu = qeth_get_mtu_outof_framesize(framesize);
2269 if (!mtu) {
2270 iob->rc = -EINVAL;
2271 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2272 return 0;
2273 }
2274 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2275 /* frame size has changed */
2276 if (card->dev &&
2277 ((card->dev->mtu == card->info.initial_mtu) ||
2278 (card->dev->mtu > mtu)))
2279 card->dev->mtu = mtu;
2280 qeth_free_qdio_buffers(card);
2281 }
2282 card->info.initial_mtu = mtu;
2283 card->info.max_mtu = mtu;
2284 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2285 } else {
2286 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2287 iob->data);
2288 card->info.initial_mtu = min(card->info.max_mtu,
2289 qeth_get_initial_mtu_for_card(card));
2290 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2291 }
2292
2293 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2294 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2295 memcpy(&link_type,
2296 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2297 card->info.link_type = link_type;
2298 } else
2299 card->info.link_type = 0;
2300 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2301 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2302 return 0;
2303 }
2304
2305 static int qeth_ulp_enable(struct qeth_card *card)
2306 {
2307 int rc;
2308 char prot_type;
2309 struct qeth_cmd_buffer *iob;
2310
2311 /*FIXME: trace view callbacks*/
2312 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2313
2314 iob = qeth_wait_for_buffer(&card->write);
2315 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2316
2317 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2318 (__u8) card->info.portno;
2319 if (card->options.layer2)
2320 if (card->info.type == QETH_CARD_TYPE_OSN)
2321 prot_type = QETH_PROT_OSN2;
2322 else
2323 prot_type = QETH_PROT_LAYER2;
2324 else
2325 prot_type = QETH_PROT_TCPIP;
2326
2327 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2328 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2329 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2330 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2331 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2332 memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2333 card->info.portname, 9);
2334 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2335 qeth_ulp_enable_cb, NULL);
2336 return rc;
2337
2338 }
2339
2340 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2341 unsigned long data)
2342 {
2343 struct qeth_cmd_buffer *iob;
2344
2345 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2346
2347 iob = (struct qeth_cmd_buffer *) data;
2348 memcpy(&card->token.ulp_connection_r,
2349 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2350 QETH_MPC_TOKEN_LENGTH);
2351 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2352 3)) {
2353 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2354 dev_err(&card->gdev->dev, "A connection could not be "
2355 "established because of an OLM limit\n");
2356 iob->rc = -EMLINK;
2357 }
2358 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2359 return 0;
2360 }
2361
2362 static int qeth_ulp_setup(struct qeth_card *card)
2363 {
2364 int rc;
2365 __u16 temp;
2366 struct qeth_cmd_buffer *iob;
2367 struct ccw_dev_id dev_id;
2368
2369 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2370
2371 iob = qeth_wait_for_buffer(&card->write);
2372 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2373
2374 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2375 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2376 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2377 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2378 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2379 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2380
2381 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2382 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2383 temp = (card->info.cula << 8) + card->info.unit_addr2;
2384 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2385 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2386 qeth_ulp_setup_cb, NULL);
2387 return rc;
2388 }
2389
2390 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2391 {
2392 int rc;
2393 struct qeth_qdio_out_buffer *newbuf;
2394
2395 rc = 0;
2396 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2397 if (!newbuf) {
2398 rc = -ENOMEM;
2399 goto out;
2400 }
2401 newbuf->buffer = q->qdio_bufs[bidx];
2402 skb_queue_head_init(&newbuf->skb_list);
2403 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2404 newbuf->q = q;
2405 newbuf->aob = NULL;
2406 newbuf->next_pending = q->bufs[bidx];
2407 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2408 q->bufs[bidx] = newbuf;
2409 if (q->bufstates) {
2410 q->bufstates[bidx].user = newbuf;
2411 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2412 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2413 QETH_CARD_TEXT_(q->card, 2, "%lx",
2414 (long) newbuf->next_pending);
2415 }
2416 out:
2417 return rc;
2418 }
2419
2420 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2421 {
2422 if (!q)
2423 return;
2424
2425 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2426 kfree(q);
2427 }
2428
2429 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2430 {
2431 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2432
2433 if (!q)
2434 return NULL;
2435
2436 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2437 kfree(q);
2438 return NULL;
2439 }
2440 return q;
2441 }
2442
2443 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2444 {
2445 int i, j;
2446
2447 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2448
2449 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2450 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2451 return 0;
2452
2453 QETH_DBF_TEXT(SETUP, 2, "inq");
2454 card->qdio.in_q = qeth_alloc_qdio_queue();
2455 if (!card->qdio.in_q)
2456 goto out_nomem;
2457
2458 /* inbound buffer pool */
2459 if (qeth_alloc_buffer_pool(card))
2460 goto out_freeinq;
2461
2462 /* outbound */
2463 card->qdio.out_qs =
2464 kzalloc(card->qdio.no_out_queues *
2465 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2466 if (!card->qdio.out_qs)
2467 goto out_freepool;
2468 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2469 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2470 if (!card->qdio.out_qs[i])
2471 goto out_freeoutq;
2472 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2473 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2474 card->qdio.out_qs[i]->queue_no = i;
2475 /* give outbound qeth_qdio_buffers their qdio_buffers */
2476 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2477 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2478 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2479 goto out_freeoutqbufs;
2480 }
2481 }
2482
2483 /* completion */
2484 if (qeth_alloc_cq(card))
2485 goto out_freeoutq;
2486
2487 return 0;
2488
2489 out_freeoutqbufs:
2490 while (j > 0) {
2491 --j;
2492 kmem_cache_free(qeth_qdio_outbuf_cache,
2493 card->qdio.out_qs[i]->bufs[j]);
2494 card->qdio.out_qs[i]->bufs[j] = NULL;
2495 }
2496 out_freeoutq:
2497 while (i > 0) {
2498 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2499 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2500 }
2501 kfree(card->qdio.out_qs);
2502 card->qdio.out_qs = NULL;
2503 out_freepool:
2504 qeth_free_buffer_pool(card);
2505 out_freeinq:
2506 qeth_free_qdio_queue(card->qdio.in_q);
2507 card->qdio.in_q = NULL;
2508 out_nomem:
2509 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2510 return -ENOMEM;
2511 }
2512
2513 static void qeth_free_qdio_buffers(struct qeth_card *card)
2514 {
2515 int i, j;
2516
2517 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2518 QETH_QDIO_UNINITIALIZED)
2519 return;
2520
2521 qeth_free_cq(card);
2522 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2523 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2524 if (card->qdio.in_q->bufs[j].rx_skb)
2525 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2526 }
2527 qeth_free_qdio_queue(card->qdio.in_q);
2528 card->qdio.in_q = NULL;
2529 /* inbound buffer pool */
2530 qeth_free_buffer_pool(card);
2531 /* free outbound qdio_qs */
2532 if (card->qdio.out_qs) {
2533 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2534 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2535 qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2536 }
2537 kfree(card->qdio.out_qs);
2538 card->qdio.out_qs = NULL;
2539 }
2540 }
2541
2542 static void qeth_create_qib_param_field(struct qeth_card *card,
2543 char *param_field)
2544 {
2545
2546 param_field[0] = _ascebc['P'];
2547 param_field[1] = _ascebc['C'];
2548 param_field[2] = _ascebc['I'];
2549 param_field[3] = _ascebc['T'];
2550 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2551 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2552 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2553 }
2554
2555 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2556 char *param_field)
2557 {
2558 param_field[16] = _ascebc['B'];
2559 param_field[17] = _ascebc['L'];
2560 param_field[18] = _ascebc['K'];
2561 param_field[19] = _ascebc['T'];
2562 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2563 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2564 *((unsigned int *) (&param_field[28])) =
2565 card->info.blkt.inter_packet_jumbo;
2566 }
2567
2568 static int qeth_qdio_activate(struct qeth_card *card)
2569 {
2570 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2571 return qdio_activate(CARD_DDEV(card));
2572 }
2573
2574 static int qeth_dm_act(struct qeth_card *card)
2575 {
2576 int rc;
2577 struct qeth_cmd_buffer *iob;
2578
2579 QETH_DBF_TEXT(SETUP, 2, "dmact");
2580
2581 iob = qeth_wait_for_buffer(&card->write);
2582 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2583
2584 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2585 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2586 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2587 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2588 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2589 return rc;
2590 }
2591
2592 static int qeth_mpc_initialize(struct qeth_card *card)
2593 {
2594 int rc;
2595
2596 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2597
2598 rc = qeth_issue_next_read(card);
2599 if (rc) {
2600 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2601 return rc;
2602 }
2603 rc = qeth_cm_enable(card);
2604 if (rc) {
2605 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2606 goto out_qdio;
2607 }
2608 rc = qeth_cm_setup(card);
2609 if (rc) {
2610 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2611 goto out_qdio;
2612 }
2613 rc = qeth_ulp_enable(card);
2614 if (rc) {
2615 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2616 goto out_qdio;
2617 }
2618 rc = qeth_ulp_setup(card);
2619 if (rc) {
2620 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2621 goto out_qdio;
2622 }
2623 rc = qeth_alloc_qdio_buffers(card);
2624 if (rc) {
2625 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2626 goto out_qdio;
2627 }
2628 rc = qeth_qdio_establish(card);
2629 if (rc) {
2630 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2631 qeth_free_qdio_buffers(card);
2632 goto out_qdio;
2633 }
2634 rc = qeth_qdio_activate(card);
2635 if (rc) {
2636 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2637 goto out_qdio;
2638 }
2639 rc = qeth_dm_act(card);
2640 if (rc) {
2641 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2642 goto out_qdio;
2643 }
2644
2645 return 0;
2646 out_qdio:
2647 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2648 qdio_free(CARD_DDEV(card));
2649 return rc;
2650 }
2651
2652 static void qeth_print_status_with_portname(struct qeth_card *card)
2653 {
2654 char dbf_text[15];
2655 int i;
2656
2657 sprintf(dbf_text, "%s", card->info.portname + 1);
2658 for (i = 0; i < 8; i++)
2659 dbf_text[i] =
2660 (char) _ebcasc[(__u8) dbf_text[i]];
2661 dbf_text[8] = 0;
2662 dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2663 "with link type %s (portname: %s)\n",
2664 qeth_get_cardname(card),
2665 (card->info.mcl_level[0]) ? " (level: " : "",
2666 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2667 (card->info.mcl_level[0]) ? ")" : "",
2668 qeth_get_cardname_short(card),
2669 dbf_text);
2670
2671 }
2672
2673 static void qeth_print_status_no_portname(struct qeth_card *card)
2674 {
2675 if (card->info.portname[0])
2676 dev_info(&card->gdev->dev, "Device is a%s "
2677 "card%s%s%s\nwith link type %s "
2678 "(no portname needed by interface).\n",
2679 qeth_get_cardname(card),
2680 (card->info.mcl_level[0]) ? " (level: " : "",
2681 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2682 (card->info.mcl_level[0]) ? ")" : "",
2683 qeth_get_cardname_short(card));
2684 else
2685 dev_info(&card->gdev->dev, "Device is a%s "
2686 "card%s%s%s\nwith link type %s.\n",
2687 qeth_get_cardname(card),
2688 (card->info.mcl_level[0]) ? " (level: " : "",
2689 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2690 (card->info.mcl_level[0]) ? ")" : "",
2691 qeth_get_cardname_short(card));
2692 }
2693
2694 void qeth_print_status_message(struct qeth_card *card)
2695 {
2696 switch (card->info.type) {
2697 case QETH_CARD_TYPE_OSD:
2698 case QETH_CARD_TYPE_OSM:
2699 case QETH_CARD_TYPE_OSX:
2700 /* VM will use a non-zero first character
2701 * to indicate a HiperSockets like reporting
2702 * of the level OSA sets the first character to zero
2703 * */
2704 if (!card->info.mcl_level[0]) {
2705 sprintf(card->info.mcl_level, "%02x%02x",
2706 card->info.mcl_level[2],
2707 card->info.mcl_level[3]);
2708
2709 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2710 break;
2711 }
2712 /* fallthrough */
2713 case QETH_CARD_TYPE_IQD:
2714 if ((card->info.guestlan) ||
2715 (card->info.mcl_level[0] & 0x80)) {
2716 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2717 card->info.mcl_level[0]];
2718 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2719 card->info.mcl_level[1]];
2720 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2721 card->info.mcl_level[2]];
2722 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2723 card->info.mcl_level[3]];
2724 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2725 }
2726 break;
2727 default:
2728 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2729 }
2730 if (card->info.portname_required)
2731 qeth_print_status_with_portname(card);
2732 else
2733 qeth_print_status_no_portname(card);
2734 }
2735 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2736
2737 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2738 {
2739 struct qeth_buffer_pool_entry *entry;
2740
2741 QETH_CARD_TEXT(card, 5, "inwrklst");
2742
2743 list_for_each_entry(entry,
2744 &card->qdio.init_pool.entry_list, init_list) {
2745 qeth_put_buffer_pool_entry(card, entry);
2746 }
2747 }
2748
2749 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2750 struct qeth_card *card)
2751 {
2752 struct list_head *plh;
2753 struct qeth_buffer_pool_entry *entry;
2754 int i, free;
2755 struct page *page;
2756
2757 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2758 return NULL;
2759
2760 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2761 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2762 free = 1;
2763 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2764 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2765 free = 0;
2766 break;
2767 }
2768 }
2769 if (free) {
2770 list_del_init(&entry->list);
2771 return entry;
2772 }
2773 }
2774
2775 /* no free buffer in pool so take first one and swap pages */
2776 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2777 struct qeth_buffer_pool_entry, list);
2778 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2779 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2780 page = alloc_page(GFP_ATOMIC);
2781 if (!page) {
2782 return NULL;
2783 } else {
2784 free_page((unsigned long)entry->elements[i]);
2785 entry->elements[i] = page_address(page);
2786 if (card->options.performance_stats)
2787 card->perf_stats.sg_alloc_page_rx++;
2788 }
2789 }
2790 }
2791 list_del_init(&entry->list);
2792 return entry;
2793 }
2794
2795 static int qeth_init_input_buffer(struct qeth_card *card,
2796 struct qeth_qdio_buffer *buf)
2797 {
2798 struct qeth_buffer_pool_entry *pool_entry;
2799 int i;
2800
2801 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2802 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2803 if (!buf->rx_skb)
2804 return 1;
2805 }
2806
2807 pool_entry = qeth_find_free_buffer_pool_entry(card);
2808 if (!pool_entry)
2809 return 1;
2810
2811 /*
2812 * since the buffer is accessed only from the input_tasklet
2813 * there shouldn't be a need to synchronize; also, since we use
2814 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2815 * buffers
2816 */
2817
2818 buf->pool_entry = pool_entry;
2819 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2820 buf->buffer->element[i].length = PAGE_SIZE;
2821 buf->buffer->element[i].addr = pool_entry->elements[i];
2822 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2823 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2824 else
2825 buf->buffer->element[i].eflags = 0;
2826 buf->buffer->element[i].sflags = 0;
2827 }
2828 return 0;
2829 }
2830
2831 int qeth_init_qdio_queues(struct qeth_card *card)
2832 {
2833 int i, j;
2834 int rc;
2835
2836 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2837
2838 /* inbound queue */
2839 qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2840 QDIO_MAX_BUFFERS_PER_Q);
2841 qeth_initialize_working_pool_list(card);
2842 /*give only as many buffers to hardware as we have buffer pool entries*/
2843 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2844 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2845 card->qdio.in_q->next_buf_to_init =
2846 card->qdio.in_buf_pool.buf_count - 1;
2847 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2848 card->qdio.in_buf_pool.buf_count - 1);
2849 if (rc) {
2850 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2851 return rc;
2852 }
2853
2854 /* completion */
2855 rc = qeth_cq_init(card);
2856 if (rc) {
2857 return rc;
2858 }
2859
2860 /* outbound queue */
2861 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2862 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2863 QDIO_MAX_BUFFERS_PER_Q);
2864 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2865 qeth_clear_output_buffer(card->qdio.out_qs[i],
2866 card->qdio.out_qs[i]->bufs[j],
2867 QETH_QDIO_BUF_EMPTY);
2868 }
2869 card->qdio.out_qs[i]->card = card;
2870 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2871 card->qdio.out_qs[i]->do_pack = 0;
2872 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2873 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2874 atomic_set(&card->qdio.out_qs[i]->state,
2875 QETH_OUT_Q_UNLOCKED);
2876 }
2877 return 0;
2878 }
2879 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2880
2881 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2882 {
2883 switch (link_type) {
2884 case QETH_LINK_TYPE_HSTR:
2885 return 2;
2886 default:
2887 return 1;
2888 }
2889 }
2890
2891 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2892 struct qeth_ipa_cmd *cmd, __u8 command,
2893 enum qeth_prot_versions prot)
2894 {
2895 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2896 cmd->hdr.command = command;
2897 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2898 cmd->hdr.seqno = card->seqno.ipa;
2899 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2900 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2901 if (card->options.layer2)
2902 cmd->hdr.prim_version_no = 2;
2903 else
2904 cmd->hdr.prim_version_no = 1;
2905 cmd->hdr.param_count = 1;
2906 cmd->hdr.prot_version = prot;
2907 cmd->hdr.ipa_supported = 0;
2908 cmd->hdr.ipa_enabled = 0;
2909 }
2910
2911 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2912 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2913 {
2914 struct qeth_cmd_buffer *iob;
2915 struct qeth_ipa_cmd *cmd;
2916
2917 iob = qeth_wait_for_buffer(&card->write);
2918 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2919 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2920
2921 return iob;
2922 }
2923 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2924
2925 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2926 char prot_type)
2927 {
2928 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2929 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2930 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2931 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2932 }
2933 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2934
2935 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2936 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2937 unsigned long),
2938 void *reply_param)
2939 {
2940 int rc;
2941 char prot_type;
2942
2943 QETH_CARD_TEXT(card, 4, "sendipa");
2944
2945 if (card->options.layer2)
2946 if (card->info.type == QETH_CARD_TYPE_OSN)
2947 prot_type = QETH_PROT_OSN2;
2948 else
2949 prot_type = QETH_PROT_LAYER2;
2950 else
2951 prot_type = QETH_PROT_TCPIP;
2952 qeth_prepare_ipa_cmd(card, iob, prot_type);
2953 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2954 iob, reply_cb, reply_param);
2955 if (rc == -ETIME) {
2956 qeth_clear_ipacmd_list(card);
2957 qeth_schedule_recovery(card);
2958 }
2959 return rc;
2960 }
2961 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2962
2963 int qeth_send_startlan(struct qeth_card *card)
2964 {
2965 int rc;
2966 struct qeth_cmd_buffer *iob;
2967
2968 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2969
2970 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2971 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2972 return rc;
2973 }
2974 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2975
2976 static int qeth_default_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, 4, "defadpcb");
2982
2983 cmd = (struct qeth_ipa_cmd *) data;
2984 if (cmd->hdr.return_code == 0)
2985 cmd->hdr.return_code =
2986 cmd->data.setadapterparms.hdr.return_code;
2987 return 0;
2988 }
2989
2990 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2991 struct qeth_reply *reply, unsigned long data)
2992 {
2993 struct qeth_ipa_cmd *cmd;
2994
2995 QETH_CARD_TEXT(card, 3, "quyadpcb");
2996
2997 cmd = (struct qeth_ipa_cmd *) data;
2998 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2999 card->info.link_type =
3000 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3001 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3002 }
3003 card->options.adp.supported_funcs =
3004 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3005 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3006 }
3007
3008 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3009 __u32 command, __u32 cmdlen)
3010 {
3011 struct qeth_cmd_buffer *iob;
3012 struct qeth_ipa_cmd *cmd;
3013
3014 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3015 QETH_PROT_IPV4);
3016 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3017 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3018 cmd->data.setadapterparms.hdr.command_code = command;
3019 cmd->data.setadapterparms.hdr.used_total = 1;
3020 cmd->data.setadapterparms.hdr.seq_no = 1;
3021
3022 return iob;
3023 }
3024
3025 int qeth_query_setadapterparms(struct qeth_card *card)
3026 {
3027 int rc;
3028 struct qeth_cmd_buffer *iob;
3029
3030 QETH_CARD_TEXT(card, 3, "queryadp");
3031 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3032 sizeof(struct qeth_ipacmd_setadpparms));
3033 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3034 return rc;
3035 }
3036 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3037
3038 static int qeth_query_ipassists_cb(struct qeth_card *card,
3039 struct qeth_reply *reply, unsigned long data)
3040 {
3041 struct qeth_ipa_cmd *cmd;
3042
3043 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3044
3045 cmd = (struct qeth_ipa_cmd *) data;
3046
3047 switch (cmd->hdr.return_code) {
3048 case IPA_RC_NOTSUPP:
3049 case IPA_RC_L2_UNSUPPORTED_CMD:
3050 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3051 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3052 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3053 return -0;
3054 default:
3055 if (cmd->hdr.return_code) {
3056 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3057 "rc=%d\n",
3058 dev_name(&card->gdev->dev),
3059 cmd->hdr.return_code);
3060 return 0;
3061 }
3062 }
3063
3064 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3065 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3066 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3067 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3068 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3069 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3070 } else
3071 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3072 "\n", dev_name(&card->gdev->dev));
3073 return 0;
3074 }
3075
3076 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3077 {
3078 int rc;
3079 struct qeth_cmd_buffer *iob;
3080
3081 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3082 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3083 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3084 return rc;
3085 }
3086 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3087
3088 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3089 struct qeth_reply *reply, unsigned long data)
3090 {
3091 struct qeth_ipa_cmd *cmd;
3092 struct qeth_switch_info *sw_info;
3093 struct qeth_query_switch_attributes *attrs;
3094
3095 QETH_CARD_TEXT(card, 2, "qswiatcb");
3096 cmd = (struct qeth_ipa_cmd *) data;
3097 sw_info = (struct qeth_switch_info *)reply->param;
3098 if (cmd->data.setadapterparms.hdr.return_code == 0) {
3099 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3100 sw_info->capabilities = attrs->capabilities;
3101 sw_info->settings = attrs->settings;
3102 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3103 sw_info->settings);
3104 }
3105 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3106
3107 return 0;
3108 }
3109
3110 int qeth_query_switch_attributes(struct qeth_card *card,
3111 struct qeth_switch_info *sw_info)
3112 {
3113 struct qeth_cmd_buffer *iob;
3114
3115 QETH_CARD_TEXT(card, 2, "qswiattr");
3116 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3117 return -EOPNOTSUPP;
3118 if (!netif_carrier_ok(card->dev))
3119 return -ENOMEDIUM;
3120 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3121 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3122 return qeth_send_ipa_cmd(card, iob,
3123 qeth_query_switch_attributes_cb, sw_info);
3124 }
3125 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3126
3127 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3128 struct qeth_reply *reply, unsigned long data)
3129 {
3130 struct qeth_ipa_cmd *cmd;
3131 __u16 rc;
3132
3133 cmd = (struct qeth_ipa_cmd *)data;
3134 rc = cmd->hdr.return_code;
3135 if (rc)
3136 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3137 else
3138 card->info.diagass_support = cmd->data.diagass.ext;
3139 return 0;
3140 }
3141
3142 static int qeth_query_setdiagass(struct qeth_card *card)
3143 {
3144 struct qeth_cmd_buffer *iob;
3145 struct qeth_ipa_cmd *cmd;
3146
3147 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3148 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3149 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3150 cmd->data.diagass.subcmd_len = 16;
3151 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3152 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3153 }
3154
3155 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3156 {
3157 unsigned long info = get_zeroed_page(GFP_KERNEL);
3158 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3159 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3160 struct ccw_dev_id ccwid;
3161 int level;
3162
3163 tid->chpid = card->info.chpid;
3164 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3165 tid->ssid = ccwid.ssid;
3166 tid->devno = ccwid.devno;
3167 if (!info)
3168 return;
3169 level = stsi(NULL, 0, 0, 0);
3170 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3171 tid->lparnr = info222->lpar_number;
3172 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3173 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3174 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3175 }
3176 free_page(info);
3177 return;
3178 }
3179
3180 static int qeth_hw_trap_cb(struct qeth_card *card,
3181 struct qeth_reply *reply, unsigned long data)
3182 {
3183 struct qeth_ipa_cmd *cmd;
3184 __u16 rc;
3185
3186 cmd = (struct qeth_ipa_cmd *)data;
3187 rc = cmd->hdr.return_code;
3188 if (rc)
3189 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3190 return 0;
3191 }
3192
3193 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3194 {
3195 struct qeth_cmd_buffer *iob;
3196 struct qeth_ipa_cmd *cmd;
3197
3198 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3199 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3200 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3201 cmd->data.diagass.subcmd_len = 80;
3202 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3203 cmd->data.diagass.type = 1;
3204 cmd->data.diagass.action = action;
3205 switch (action) {
3206 case QETH_DIAGS_TRAP_ARM:
3207 cmd->data.diagass.options = 0x0003;
3208 cmd->data.diagass.ext = 0x00010000 +
3209 sizeof(struct qeth_trap_id);
3210 qeth_get_trap_id(card,
3211 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3212 break;
3213 case QETH_DIAGS_TRAP_DISARM:
3214 cmd->data.diagass.options = 0x0001;
3215 break;
3216 case QETH_DIAGS_TRAP_CAPTURE:
3217 break;
3218 }
3219 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3220 }
3221 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3222
3223 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3224 unsigned int qdio_error, 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 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3242
3243 static void qeth_buffer_reclaim_work(struct work_struct *work)
3244 {
3245 struct qeth_card *card = container_of(work, struct qeth_card,
3246 buffer_reclaim_work.work);
3247
3248 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3249 qeth_queue_input_buffer(card, card->reclaim_index);
3250 }
3251
3252 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3253 {
3254 struct qeth_qdio_q *queue = card->qdio.in_q;
3255 struct list_head *lh;
3256 int count;
3257 int i;
3258 int rc;
3259 int newcount = 0;
3260
3261 count = (index < queue->next_buf_to_init)?
3262 card->qdio.in_buf_pool.buf_count -
3263 (queue->next_buf_to_init - index) :
3264 card->qdio.in_buf_pool.buf_count -
3265 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3266 /* only requeue at a certain threshold to avoid SIGAs */
3267 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3268 for (i = queue->next_buf_to_init;
3269 i < queue->next_buf_to_init + count; ++i) {
3270 if (qeth_init_input_buffer(card,
3271 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3272 break;
3273 } else {
3274 newcount++;
3275 }
3276 }
3277
3278 if (newcount < count) {
3279 /* we are in memory shortage so we switch back to
3280 traditional skb allocation and drop packages */
3281 atomic_set(&card->force_alloc_skb, 3);
3282 count = newcount;
3283 } else {
3284 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3285 }
3286
3287 if (!count) {
3288 i = 0;
3289 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3290 i++;
3291 if (i == card->qdio.in_buf_pool.buf_count) {
3292 QETH_CARD_TEXT(card, 2, "qsarbw");
3293 card->reclaim_index = index;
3294 schedule_delayed_work(
3295 &card->buffer_reclaim_work,
3296 QETH_RECLAIM_WORK_TIME);
3297 }
3298 return;
3299 }
3300
3301 /*
3302 * according to old code it should be avoided to requeue all
3303 * 128 buffers in order to benefit from PCI avoidance.
3304 * this function keeps at least one buffer (the buffer at
3305 * 'index') un-requeued -> this buffer is the first buffer that
3306 * will be requeued the next time
3307 */
3308 if (card->options.performance_stats) {
3309 card->perf_stats.inbound_do_qdio_cnt++;
3310 card->perf_stats.inbound_do_qdio_start_time =
3311 qeth_get_micros();
3312 }
3313 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3314 queue->next_buf_to_init, count);
3315 if (card->options.performance_stats)
3316 card->perf_stats.inbound_do_qdio_time +=
3317 qeth_get_micros() -
3318 card->perf_stats.inbound_do_qdio_start_time;
3319 if (rc) {
3320 QETH_CARD_TEXT(card, 2, "qinberr");
3321 }
3322 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3323 QDIO_MAX_BUFFERS_PER_Q;
3324 }
3325 }
3326 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3327
3328 static int qeth_handle_send_error(struct qeth_card *card,
3329 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3330 {
3331 int sbalf15 = buffer->buffer->element[15].sflags;
3332
3333 QETH_CARD_TEXT(card, 6, "hdsnderr");
3334 if (card->info.type == QETH_CARD_TYPE_IQD) {
3335 if (sbalf15 == 0) {
3336 qdio_err = 0;
3337 } else {
3338 qdio_err = 1;
3339 }
3340 }
3341 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3342
3343 if (!qdio_err)
3344 return QETH_SEND_ERROR_NONE;
3345
3346 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3347 return QETH_SEND_ERROR_RETRY;
3348
3349 QETH_CARD_TEXT(card, 1, "lnkfail");
3350 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3351 (u16)qdio_err, (u8)sbalf15);
3352 return QETH_SEND_ERROR_LINK_FAILURE;
3353 }
3354
3355 /*
3356 * Switched to packing state if the number of used buffers on a queue
3357 * reaches a certain limit.
3358 */
3359 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3360 {
3361 if (!queue->do_pack) {
3362 if (atomic_read(&queue->used_buffers)
3363 >= QETH_HIGH_WATERMARK_PACK){
3364 /* switch non-PACKING -> PACKING */
3365 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3366 if (queue->card->options.performance_stats)
3367 queue->card->perf_stats.sc_dp_p++;
3368 queue->do_pack = 1;
3369 }
3370 }
3371 }
3372
3373 /*
3374 * Switches from packing to non-packing mode. If there is a packing
3375 * buffer on the queue this buffer will be prepared to be flushed.
3376 * In that case 1 is returned to inform the caller. If no buffer
3377 * has to be flushed, zero is returned.
3378 */
3379 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3380 {
3381 struct qeth_qdio_out_buffer *buffer;
3382 int flush_count = 0;
3383
3384 if (queue->do_pack) {
3385 if (atomic_read(&queue->used_buffers)
3386 <= QETH_LOW_WATERMARK_PACK) {
3387 /* switch PACKING -> non-PACKING */
3388 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3389 if (queue->card->options.performance_stats)
3390 queue->card->perf_stats.sc_p_dp++;
3391 queue->do_pack = 0;
3392 /* flush packing buffers */
3393 buffer = queue->bufs[queue->next_buf_to_fill];
3394 if ((atomic_read(&buffer->state) ==
3395 QETH_QDIO_BUF_EMPTY) &&
3396 (buffer->next_element_to_fill > 0)) {
3397 atomic_set(&buffer->state,
3398 QETH_QDIO_BUF_PRIMED);
3399 flush_count++;
3400 queue->next_buf_to_fill =
3401 (queue->next_buf_to_fill + 1) %
3402 QDIO_MAX_BUFFERS_PER_Q;
3403 }
3404 }
3405 }
3406 return flush_count;
3407 }
3408
3409
3410 /*
3411 * Called to flush a packing buffer if no more pci flags are on the queue.
3412 * Checks if there is a packing buffer and prepares it to be flushed.
3413 * In that case returns 1, otherwise zero.
3414 */
3415 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3416 {
3417 struct qeth_qdio_out_buffer *buffer;
3418
3419 buffer = queue->bufs[queue->next_buf_to_fill];
3420 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3421 (buffer->next_element_to_fill > 0)) {
3422 /* it's a packing buffer */
3423 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3424 queue->next_buf_to_fill =
3425 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3426 return 1;
3427 }
3428 return 0;
3429 }
3430
3431 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3432 int count)
3433 {
3434 struct qeth_qdio_out_buffer *buf;
3435 int rc;
3436 int i;
3437 unsigned int qdio_flags;
3438
3439 for (i = index; i < index + count; ++i) {
3440 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3441 buf = queue->bufs[bidx];
3442 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3443 SBAL_EFLAGS_LAST_ENTRY;
3444
3445 if (queue->bufstates)
3446 queue->bufstates[bidx].user = buf;
3447
3448 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3449 continue;
3450
3451 if (!queue->do_pack) {
3452 if ((atomic_read(&queue->used_buffers) >=
3453 (QETH_HIGH_WATERMARK_PACK -
3454 QETH_WATERMARK_PACK_FUZZ)) &&
3455 !atomic_read(&queue->set_pci_flags_count)) {
3456 /* it's likely that we'll go to packing
3457 * mode soon */
3458 atomic_inc(&queue->set_pci_flags_count);
3459 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3460 }
3461 } else {
3462 if (!atomic_read(&queue->set_pci_flags_count)) {
3463 /*
3464 * there's no outstanding PCI any more, so we
3465 * have to request a PCI to be sure the the PCI
3466 * will wake at some time in the future then we
3467 * can flush packed buffers that might still be
3468 * hanging around, which can happen if no
3469 * further send was requested by the stack
3470 */
3471 atomic_inc(&queue->set_pci_flags_count);
3472 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3473 }
3474 }
3475 }
3476
3477 queue->card->dev->trans_start = jiffies;
3478 if (queue->card->options.performance_stats) {
3479 queue->card->perf_stats.outbound_do_qdio_cnt++;
3480 queue->card->perf_stats.outbound_do_qdio_start_time =
3481 qeth_get_micros();
3482 }
3483 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3484 if (atomic_read(&queue->set_pci_flags_count))
3485 qdio_flags |= QDIO_FLAG_PCI_OUT;
3486 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3487 queue->queue_no, index, count);
3488 if (queue->card->options.performance_stats)
3489 queue->card->perf_stats.outbound_do_qdio_time +=
3490 qeth_get_micros() -
3491 queue->card->perf_stats.outbound_do_qdio_start_time;
3492 atomic_add(count, &queue->used_buffers);
3493 if (rc) {
3494 queue->card->stats.tx_errors += count;
3495 /* ignore temporary SIGA errors without busy condition */
3496 if (rc == -ENOBUFS)
3497 return;
3498 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3499 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3500 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3501 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3502 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3503
3504 /* this must not happen under normal circumstances. if it
3505 * happens something is really wrong -> recover */
3506 qeth_schedule_recovery(queue->card);
3507 return;
3508 }
3509 if (queue->card->options.performance_stats)
3510 queue->card->perf_stats.bufs_sent += count;
3511 }
3512
3513 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3514 {
3515 int index;
3516 int flush_cnt = 0;
3517 int q_was_packing = 0;
3518
3519 /*
3520 * check if weed have to switch to non-packing mode or if
3521 * we have to get a pci flag out on the queue
3522 */
3523 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3524 !atomic_read(&queue->set_pci_flags_count)) {
3525 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3526 QETH_OUT_Q_UNLOCKED) {
3527 /*
3528 * If we get in here, there was no action in
3529 * do_send_packet. So, we check if there is a
3530 * packing buffer to be flushed here.
3531 */
3532 netif_stop_queue(queue->card->dev);
3533 index = queue->next_buf_to_fill;
3534 q_was_packing = queue->do_pack;
3535 /* queue->do_pack may change */
3536 barrier();
3537 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3538 if (!flush_cnt &&
3539 !atomic_read(&queue->set_pci_flags_count))
3540 flush_cnt +=
3541 qeth_flush_buffers_on_no_pci(queue);
3542 if (queue->card->options.performance_stats &&
3543 q_was_packing)
3544 queue->card->perf_stats.bufs_sent_pack +=
3545 flush_cnt;
3546 if (flush_cnt)
3547 qeth_flush_buffers(queue, index, flush_cnt);
3548 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3549 }
3550 }
3551 }
3552
3553 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3554 unsigned long card_ptr)
3555 {
3556 struct qeth_card *card = (struct qeth_card *)card_ptr;
3557
3558 if (card->dev && (card->dev->flags & IFF_UP))
3559 napi_schedule(&card->napi);
3560 }
3561 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3562
3563 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3564 {
3565 int rc;
3566
3567 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3568 rc = -1;
3569 goto out;
3570 } else {
3571 if (card->options.cq == cq) {
3572 rc = 0;
3573 goto out;
3574 }
3575
3576 if (card->state != CARD_STATE_DOWN &&
3577 card->state != CARD_STATE_RECOVER) {
3578 rc = -1;
3579 goto out;
3580 }
3581
3582 qeth_free_qdio_buffers(card);
3583 card->options.cq = cq;
3584 rc = 0;
3585 }
3586 out:
3587 return rc;
3588
3589 }
3590 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3591
3592
3593 static void qeth_qdio_cq_handler(struct qeth_card *card,
3594 unsigned int qdio_err,
3595 unsigned int queue, int first_element, int count) {
3596 struct qeth_qdio_q *cq = card->qdio.c_q;
3597 int i;
3598 int rc;
3599
3600 if (!qeth_is_cq(card, queue))
3601 goto out;
3602
3603 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3604 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3605 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3606
3607 if (qdio_err) {
3608 netif_stop_queue(card->dev);
3609 qeth_schedule_recovery(card);
3610 goto out;
3611 }
3612
3613 if (card->options.performance_stats) {
3614 card->perf_stats.cq_cnt++;
3615 card->perf_stats.cq_start_time = qeth_get_micros();
3616 }
3617
3618 for (i = first_element; i < first_element + count; ++i) {
3619 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3620 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3621 int e;
3622
3623 e = 0;
3624 while (buffer->element[e].addr) {
3625 unsigned long phys_aob_addr;
3626
3627 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3628 qeth_qdio_handle_aob(card, phys_aob_addr);
3629 buffer->element[e].addr = NULL;
3630 buffer->element[e].eflags = 0;
3631 buffer->element[e].sflags = 0;
3632 buffer->element[e].length = 0;
3633
3634 ++e;
3635 }
3636
3637 buffer->element[15].eflags = 0;
3638 buffer->element[15].sflags = 0;
3639 }
3640 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3641 card->qdio.c_q->next_buf_to_init,
3642 count);
3643 if (rc) {
3644 dev_warn(&card->gdev->dev,
3645 "QDIO reported an error, rc=%i\n", rc);
3646 QETH_CARD_TEXT(card, 2, "qcqherr");
3647 }
3648 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3649 + count) % QDIO_MAX_BUFFERS_PER_Q;
3650
3651 netif_wake_queue(card->dev);
3652
3653 if (card->options.performance_stats) {
3654 int delta_t = qeth_get_micros();
3655 delta_t -= card->perf_stats.cq_start_time;
3656 card->perf_stats.cq_time += delta_t;
3657 }
3658 out:
3659 return;
3660 }
3661
3662 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3663 unsigned int queue, int first_elem, int count,
3664 unsigned long card_ptr)
3665 {
3666 struct qeth_card *card = (struct qeth_card *)card_ptr;
3667
3668 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3669 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3670
3671 if (qeth_is_cq(card, queue))
3672 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3673 else if (qdio_err)
3674 qeth_schedule_recovery(card);
3675
3676
3677 }
3678 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3679
3680 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3681 unsigned int qdio_error, int __queue, int first_element,
3682 int count, unsigned long card_ptr)
3683 {
3684 struct qeth_card *card = (struct qeth_card *) card_ptr;
3685 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3686 struct qeth_qdio_out_buffer *buffer;
3687 int i;
3688
3689 QETH_CARD_TEXT(card, 6, "qdouhdl");
3690 if (qdio_error & QDIO_ERROR_FATAL) {
3691 QETH_CARD_TEXT(card, 2, "achkcond");
3692 netif_stop_queue(card->dev);
3693 qeth_schedule_recovery(card);
3694 return;
3695 }
3696 if (card->options.performance_stats) {
3697 card->perf_stats.outbound_handler_cnt++;
3698 card->perf_stats.outbound_handler_start_time =
3699 qeth_get_micros();
3700 }
3701 for (i = first_element; i < (first_element + count); ++i) {
3702 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3703 buffer = queue->bufs[bidx];
3704 qeth_handle_send_error(card, buffer, qdio_error);
3705
3706 if (queue->bufstates &&
3707 (queue->bufstates[bidx].flags &
3708 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3709 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3710
3711 if (atomic_cmpxchg(&buffer->state,
3712 QETH_QDIO_BUF_PRIMED,
3713 QETH_QDIO_BUF_PENDING) ==
3714 QETH_QDIO_BUF_PRIMED) {
3715 qeth_notify_skbs(queue, buffer,
3716 TX_NOTIFY_PENDING);
3717 }
3718 buffer->aob = queue->bufstates[bidx].aob;
3719 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3720 QETH_CARD_TEXT(queue->card, 5, "aob");
3721 QETH_CARD_TEXT_(queue->card, 5, "%lx",
3722 virt_to_phys(buffer->aob));
3723 if (qeth_init_qdio_out_buf(queue, bidx)) {
3724 QETH_CARD_TEXT(card, 2, "outofbuf");
3725 qeth_schedule_recovery(card);
3726 }
3727 } else {
3728 if (card->options.cq == QETH_CQ_ENABLED) {
3729 enum iucv_tx_notify n;
3730
3731 n = qeth_compute_cq_notification(
3732 buffer->buffer->element[15].sflags, 0);
3733 qeth_notify_skbs(queue, buffer, n);
3734 }
3735
3736 qeth_clear_output_buffer(queue, buffer,
3737 QETH_QDIO_BUF_EMPTY);
3738 }
3739 qeth_cleanup_handled_pending(queue, bidx, 0);
3740 }
3741 atomic_sub(count, &queue->used_buffers);
3742 /* check if we need to do something on this outbound queue */
3743 if (card->info.type != QETH_CARD_TYPE_IQD)
3744 qeth_check_outbound_queue(queue);
3745
3746 netif_wake_queue(queue->card->dev);
3747 if (card->options.performance_stats)
3748 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3749 card->perf_stats.outbound_handler_start_time;
3750 }
3751 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3752
3753 /**
3754 * Note: Function assumes that we have 4 outbound queues.
3755 */
3756 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3757 int ipv, int cast_type)
3758 {
3759 __be16 *tci;
3760 u8 tos;
3761
3762 if (cast_type && card->info.is_multicast_different)
3763 return card->info.is_multicast_different &
3764 (card->qdio.no_out_queues - 1);
3765
3766 switch (card->qdio.do_prio_queueing) {
3767 case QETH_PRIO_Q_ING_TOS:
3768 case QETH_PRIO_Q_ING_PREC:
3769 switch (ipv) {
3770 case 4:
3771 tos = ipv4_get_dsfield(ip_hdr(skb));
3772 break;
3773 case 6:
3774 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3775 break;
3776 default:
3777 return card->qdio.default_out_queue;
3778 }
3779 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3780 return ~tos >> 6 & 3;
3781 if (tos & IPTOS_MINCOST)
3782 return 3;
3783 if (tos & IPTOS_RELIABILITY)
3784 return 2;
3785 if (tos & IPTOS_THROUGHPUT)
3786 return 1;
3787 if (tos & IPTOS_LOWDELAY)
3788 return 0;
3789 break;
3790 case QETH_PRIO_Q_ING_SKB:
3791 if (skb->priority > 5)
3792 return 0;
3793 return ~skb->priority >> 1 & 3;
3794 case QETH_PRIO_Q_ING_VLAN:
3795 tci = &((struct ethhdr *)skb->data)->h_proto;
3796 if (*tci == ETH_P_8021Q)
3797 return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
3798 break;
3799 default:
3800 break;
3801 }
3802 return card->qdio.default_out_queue;
3803 }
3804 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3805
3806 int qeth_get_elements_for_frags(struct sk_buff *skb)
3807 {
3808 int cnt, length, e, elements = 0;
3809 struct skb_frag_struct *frag;
3810 char *data;
3811
3812 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3813 frag = &skb_shinfo(skb)->frags[cnt];
3814 data = (char *)page_to_phys(skb_frag_page(frag)) +
3815 frag->page_offset;
3816 length = frag->size;
3817 e = PFN_UP((unsigned long)data + length - 1) -
3818 PFN_DOWN((unsigned long)data);
3819 elements += e;
3820 }
3821 return elements;
3822 }
3823 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3824
3825 int qeth_get_elements_no(struct qeth_card *card,
3826 struct sk_buff *skb, int elems)
3827 {
3828 int dlen = skb->len - skb->data_len;
3829 int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3830 PFN_DOWN((unsigned long)skb->data);
3831
3832 elements_needed += qeth_get_elements_for_frags(skb);
3833
3834 if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3835 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3836 "(Number=%d / Length=%d). Discarded.\n",
3837 (elements_needed+elems), skb->len);
3838 return 0;
3839 }
3840 return elements_needed;
3841 }
3842 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3843
3844 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3845 {
3846 int hroom, inpage, rest;
3847
3848 if (((unsigned long)skb->data & PAGE_MASK) !=
3849 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3850 hroom = skb_headroom(skb);
3851 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3852 rest = len - inpage;
3853 if (rest > hroom)
3854 return 1;
3855 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3856 skb->data -= rest;
3857 skb->tail -= rest;
3858 *hdr = (struct qeth_hdr *)skb->data;
3859 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3860 }
3861 return 0;
3862 }
3863 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3864
3865 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3866 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3867 int offset)
3868 {
3869 int length = skb->len - skb->data_len;
3870 int length_here;
3871 int element;
3872 char *data;
3873 int first_lap, cnt;
3874 struct skb_frag_struct *frag;
3875
3876 element = *next_element_to_fill;
3877 data = skb->data;
3878 first_lap = (is_tso == 0 ? 1 : 0);
3879
3880 if (offset >= 0) {
3881 data = skb->data + offset;
3882 length -= offset;
3883 first_lap = 0;
3884 }
3885
3886 while (length > 0) {
3887 /* length_here is the remaining amount of data in this page */
3888 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3889 if (length < length_here)
3890 length_here = length;
3891
3892 buffer->element[element].addr = data;
3893 buffer->element[element].length = length_here;
3894 length -= length_here;
3895 if (!length) {
3896 if (first_lap)
3897 if (skb_shinfo(skb)->nr_frags)
3898 buffer->element[element].eflags =
3899 SBAL_EFLAGS_FIRST_FRAG;
3900 else
3901 buffer->element[element].eflags = 0;
3902 else
3903 buffer->element[element].eflags =
3904 SBAL_EFLAGS_MIDDLE_FRAG;
3905 } else {
3906 if (first_lap)
3907 buffer->element[element].eflags =
3908 SBAL_EFLAGS_FIRST_FRAG;
3909 else
3910 buffer->element[element].eflags =
3911 SBAL_EFLAGS_MIDDLE_FRAG;
3912 }
3913 data += length_here;
3914 element++;
3915 first_lap = 0;
3916 }
3917
3918 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3919 frag = &skb_shinfo(skb)->frags[cnt];
3920 data = (char *)page_to_phys(skb_frag_page(frag)) +
3921 frag->page_offset;
3922 length = frag->size;
3923 while (length > 0) {
3924 length_here = PAGE_SIZE -
3925 ((unsigned long) data % PAGE_SIZE);
3926 if (length < length_here)
3927 length_here = length;
3928
3929 buffer->element[element].addr = data;
3930 buffer->element[element].length = length_here;
3931 buffer->element[element].eflags =
3932 SBAL_EFLAGS_MIDDLE_FRAG;
3933 length -= length_here;
3934 data += length_here;
3935 element++;
3936 }
3937 }
3938
3939 if (buffer->element[element - 1].eflags)
3940 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3941 *next_element_to_fill = element;
3942 }
3943
3944 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3945 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3946 struct qeth_hdr *hdr, int offset, int hd_len)
3947 {
3948 struct qdio_buffer *buffer;
3949 int flush_cnt = 0, hdr_len, large_send = 0;
3950
3951 buffer = buf->buffer;
3952 atomic_inc(&skb->users);
3953 skb_queue_tail(&buf->skb_list, skb);
3954
3955 /*check first on TSO ....*/
3956 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3957 int element = buf->next_element_to_fill;
3958
3959 hdr_len = sizeof(struct qeth_hdr_tso) +
3960 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3961 /*fill first buffer entry only with header information */
3962 buffer->element[element].addr = skb->data;
3963 buffer->element[element].length = hdr_len;
3964 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3965 buf->next_element_to_fill++;
3966 skb->data += hdr_len;
3967 skb->len -= hdr_len;
3968 large_send = 1;
3969 }
3970
3971 if (offset >= 0) {
3972 int element = buf->next_element_to_fill;
3973 buffer->element[element].addr = hdr;
3974 buffer->element[element].length = sizeof(struct qeth_hdr) +
3975 hd_len;
3976 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3977 buf->is_header[element] = 1;
3978 buf->next_element_to_fill++;
3979 }
3980
3981 __qeth_fill_buffer(skb, buffer, large_send,
3982 (int *)&buf->next_element_to_fill, offset);
3983
3984 if (!queue->do_pack) {
3985 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3986 /* set state to PRIMED -> will be flushed */
3987 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3988 flush_cnt = 1;
3989 } else {
3990 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3991 if (queue->card->options.performance_stats)
3992 queue->card->perf_stats.skbs_sent_pack++;
3993 if (buf->next_element_to_fill >=
3994 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3995 /*
3996 * packed buffer if full -> set state PRIMED
3997 * -> will be flushed
3998 */
3999 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4000 flush_cnt = 1;
4001 }
4002 }
4003 return flush_cnt;
4004 }
4005
4006 int qeth_do_send_packet_fast(struct qeth_card *card,
4007 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4008 struct qeth_hdr *hdr, int elements_needed,
4009 int offset, int hd_len)
4010 {
4011 struct qeth_qdio_out_buffer *buffer;
4012 int index;
4013
4014 /* spin until we get the queue ... */
4015 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4016 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4017 /* ... now we've got the queue */
4018 index = queue->next_buf_to_fill;
4019 buffer = queue->bufs[queue->next_buf_to_fill];
4020 /*
4021 * check if buffer is empty to make sure that we do not 'overtake'
4022 * ourselves and try to fill a buffer that is already primed
4023 */
4024 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4025 goto out;
4026 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4027 QDIO_MAX_BUFFERS_PER_Q;
4028 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4029 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4030 qeth_flush_buffers(queue, index, 1);
4031 return 0;
4032 out:
4033 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4034 return -EBUSY;
4035 }
4036 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4037
4038 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4039 struct sk_buff *skb, struct qeth_hdr *hdr,
4040 int elements_needed)
4041 {
4042 struct qeth_qdio_out_buffer *buffer;
4043 int start_index;
4044 int flush_count = 0;
4045 int do_pack = 0;
4046 int tmp;
4047 int rc = 0;
4048
4049 /* spin until we get the queue ... */
4050 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4051 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4052 start_index = queue->next_buf_to_fill;
4053 buffer = queue->bufs[queue->next_buf_to_fill];
4054 /*
4055 * check if buffer is empty to make sure that we do not 'overtake'
4056 * ourselves and try to fill a buffer that is already primed
4057 */
4058 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4059 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4060 return -EBUSY;
4061 }
4062 /* check if we need to switch packing state of this queue */
4063 qeth_switch_to_packing_if_needed(queue);
4064 if (queue->do_pack) {
4065 do_pack = 1;
4066 /* does packet fit in current buffer? */
4067 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4068 buffer->next_element_to_fill) < elements_needed) {
4069 /* ... no -> set state PRIMED */
4070 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4071 flush_count++;
4072 queue->next_buf_to_fill =
4073 (queue->next_buf_to_fill + 1) %
4074 QDIO_MAX_BUFFERS_PER_Q;
4075 buffer = queue->bufs[queue->next_buf_to_fill];
4076 /* we did a step forward, so check buffer state
4077 * again */
4078 if (atomic_read(&buffer->state) !=
4079 QETH_QDIO_BUF_EMPTY) {
4080 qeth_flush_buffers(queue, start_index,
4081 flush_count);
4082 atomic_set(&queue->state,
4083 QETH_OUT_Q_UNLOCKED);
4084 return -EBUSY;
4085 }
4086 }
4087 }
4088 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4089 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4090 QDIO_MAX_BUFFERS_PER_Q;
4091 flush_count += tmp;
4092 if (flush_count)
4093 qeth_flush_buffers(queue, start_index, flush_count);
4094 else if (!atomic_read(&queue->set_pci_flags_count))
4095 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4096 /*
4097 * queue->state will go from LOCKED -> UNLOCKED or from
4098 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4099 * (switch packing state or flush buffer to get another pci flag out).
4100 * In that case we will enter this loop
4101 */
4102 while (atomic_dec_return(&queue->state)) {
4103 flush_count = 0;
4104 start_index = queue->next_buf_to_fill;
4105 /* check if we can go back to non-packing state */
4106 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4107 /*
4108 * check if we need to flush a packing buffer to get a pci
4109 * flag out on the queue
4110 */
4111 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4112 flush_count += qeth_flush_buffers_on_no_pci(queue);
4113 if (flush_count)
4114 qeth_flush_buffers(queue, start_index, flush_count);
4115 }
4116 /* at this point the queue is UNLOCKED again */
4117 if (queue->card->options.performance_stats && do_pack)
4118 queue->card->perf_stats.bufs_sent_pack += flush_count;
4119
4120 return rc;
4121 }
4122 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4123
4124 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4125 struct qeth_reply *reply, unsigned long data)
4126 {
4127 struct qeth_ipa_cmd *cmd;
4128 struct qeth_ipacmd_setadpparms *setparms;
4129
4130 QETH_CARD_TEXT(card, 4, "prmadpcb");
4131
4132 cmd = (struct qeth_ipa_cmd *) data;
4133 setparms = &(cmd->data.setadapterparms);
4134
4135 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4136 if (cmd->hdr.return_code) {
4137 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4138 setparms->data.mode = SET_PROMISC_MODE_OFF;
4139 }
4140 card->info.promisc_mode = setparms->data.mode;
4141 return 0;
4142 }
4143
4144 void qeth_setadp_promisc_mode(struct qeth_card *card)
4145 {
4146 enum qeth_ipa_promisc_modes mode;
4147 struct net_device *dev = card->dev;
4148 struct qeth_cmd_buffer *iob;
4149 struct qeth_ipa_cmd *cmd;
4150
4151 QETH_CARD_TEXT(card, 4, "setprom");
4152
4153 if (((dev->flags & IFF_PROMISC) &&
4154 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4155 (!(dev->flags & IFF_PROMISC) &&
4156 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4157 return;
4158 mode = SET_PROMISC_MODE_OFF;
4159 if (dev->flags & IFF_PROMISC)
4160 mode = SET_PROMISC_MODE_ON;
4161 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4162
4163 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4164 sizeof(struct qeth_ipacmd_setadpparms));
4165 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4166 cmd->data.setadapterparms.data.mode = mode;
4167 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4168 }
4169 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4170
4171 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4172 {
4173 struct qeth_card *card;
4174 char dbf_text[15];
4175
4176 card = dev->ml_priv;
4177
4178 QETH_CARD_TEXT(card, 4, "chgmtu");
4179 sprintf(dbf_text, "%8x", new_mtu);
4180 QETH_CARD_TEXT(card, 4, dbf_text);
4181
4182 if (new_mtu < 64)
4183 return -EINVAL;
4184 if (new_mtu > 65535)
4185 return -EINVAL;
4186 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4187 (!qeth_mtu_is_valid(card, new_mtu)))
4188 return -EINVAL;
4189 dev->mtu = new_mtu;
4190 return 0;
4191 }
4192 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4193
4194 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4195 {
4196 struct qeth_card *card;
4197
4198 card = dev->ml_priv;
4199
4200 QETH_CARD_TEXT(card, 5, "getstat");
4201
4202 return &card->stats;
4203 }
4204 EXPORT_SYMBOL_GPL(qeth_get_stats);
4205
4206 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4207 struct qeth_reply *reply, unsigned long data)
4208 {
4209 struct qeth_ipa_cmd *cmd;
4210
4211 QETH_CARD_TEXT(card, 4, "chgmaccb");
4212
4213 cmd = (struct qeth_ipa_cmd *) data;
4214 if (!card->options.layer2 ||
4215 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4216 memcpy(card->dev->dev_addr,
4217 &cmd->data.setadapterparms.data.change_addr.addr,
4218 OSA_ADDR_LEN);
4219 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4220 }
4221 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4222 return 0;
4223 }
4224
4225 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4226 {
4227 int rc;
4228 struct qeth_cmd_buffer *iob;
4229 struct qeth_ipa_cmd *cmd;
4230
4231 QETH_CARD_TEXT(card, 4, "chgmac");
4232
4233 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4234 sizeof(struct qeth_ipacmd_setadpparms));
4235 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4236 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4237 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4238 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4239 card->dev->dev_addr, OSA_ADDR_LEN);
4240 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4241 NULL);
4242 return rc;
4243 }
4244 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4245
4246 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4247 struct qeth_reply *reply, unsigned long data)
4248 {
4249 struct qeth_ipa_cmd *cmd;
4250 struct qeth_set_access_ctrl *access_ctrl_req;
4251 int fallback = *(int *)reply->param;
4252
4253 QETH_CARD_TEXT(card, 4, "setaccb");
4254
4255 cmd = (struct qeth_ipa_cmd *) data;
4256 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4257 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4258 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4259 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4260 cmd->data.setadapterparms.hdr.return_code);
4261 if (cmd->data.setadapterparms.hdr.return_code !=
4262 SET_ACCESS_CTRL_RC_SUCCESS)
4263 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4264 card->gdev->dev.kobj.name,
4265 access_ctrl_req->subcmd_code,
4266 cmd->data.setadapterparms.hdr.return_code);
4267 switch (cmd->data.setadapterparms.hdr.return_code) {
4268 case SET_ACCESS_CTRL_RC_SUCCESS:
4269 if (card->options.isolation == ISOLATION_MODE_NONE) {
4270 dev_info(&card->gdev->dev,
4271 "QDIO data connection isolation is deactivated\n");
4272 } else {
4273 dev_info(&card->gdev->dev,
4274 "QDIO data connection isolation is activated\n");
4275 }
4276 break;
4277 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4278 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4279 "deactivated\n", dev_name(&card->gdev->dev));
4280 if (fallback)
4281 card->options.isolation = card->options.prev_isolation;
4282 break;
4283 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4284 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4285 " activated\n", dev_name(&card->gdev->dev));
4286 if (fallback)
4287 card->options.isolation = card->options.prev_isolation;
4288 break;
4289 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4290 dev_err(&card->gdev->dev, "Adapter does not "
4291 "support QDIO data connection isolation\n");
4292 break;
4293 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4294 dev_err(&card->gdev->dev,
4295 "Adapter is dedicated. "
4296 "QDIO data connection isolation not supported\n");
4297 if (fallback)
4298 card->options.isolation = card->options.prev_isolation;
4299 break;
4300 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4301 dev_err(&card->gdev->dev,
4302 "TSO does not permit QDIO data connection isolation\n");
4303 if (fallback)
4304 card->options.isolation = card->options.prev_isolation;
4305 break;
4306 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4307 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4308 "support reflective relay mode\n");
4309 if (fallback)
4310 card->options.isolation = card->options.prev_isolation;
4311 break;
4312 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4313 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4314 "enabled at the adjacent switch port");
4315 if (fallback)
4316 card->options.isolation = card->options.prev_isolation;
4317 break;
4318 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4319 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4320 "at the adjacent switch failed\n");
4321 break;
4322 default:
4323 /* this should never happen */
4324 if (fallback)
4325 card->options.isolation = card->options.prev_isolation;
4326 break;
4327 }
4328 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4329 return 0;
4330 }
4331
4332 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4333 enum qeth_ipa_isolation_modes isolation, int fallback)
4334 {
4335 int rc;
4336 struct qeth_cmd_buffer *iob;
4337 struct qeth_ipa_cmd *cmd;
4338 struct qeth_set_access_ctrl *access_ctrl_req;
4339
4340 QETH_CARD_TEXT(card, 4, "setacctl");
4341
4342 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4343 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4344
4345 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4346 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4347 sizeof(struct qeth_set_access_ctrl));
4348 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4349 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4350 access_ctrl_req->subcmd_code = isolation;
4351
4352 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4353 &fallback);
4354 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4355 return rc;
4356 }
4357
4358 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4359 {
4360 int rc = 0;
4361
4362 QETH_CARD_TEXT(card, 4, "setactlo");
4363
4364 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4365 card->info.type == QETH_CARD_TYPE_OSX) &&
4366 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4367 rc = qeth_setadpparms_set_access_ctrl(card,
4368 card->options.isolation, fallback);
4369 if (rc) {
4370 QETH_DBF_MESSAGE(3,
4371 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4372 card->gdev->dev.kobj.name,
4373 rc);
4374 rc = -EOPNOTSUPP;
4375 }
4376 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4377 card->options.isolation = ISOLATION_MODE_NONE;
4378
4379 dev_err(&card->gdev->dev, "Adapter does not "
4380 "support QDIO data connection isolation\n");
4381 rc = -EOPNOTSUPP;
4382 }
4383 return rc;
4384 }
4385 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4386
4387 void qeth_tx_timeout(struct net_device *dev)
4388 {
4389 struct qeth_card *card;
4390
4391 card = dev->ml_priv;
4392 QETH_CARD_TEXT(card, 4, "txtimeo");
4393 card->stats.tx_errors++;
4394 qeth_schedule_recovery(card);
4395 }
4396 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4397
4398 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4399 {
4400 struct qeth_card *card = dev->ml_priv;
4401 int rc = 0;
4402
4403 switch (regnum) {
4404 case MII_BMCR: /* Basic mode control register */
4405 rc = BMCR_FULLDPLX;
4406 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4407 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4408 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4409 rc |= BMCR_SPEED100;
4410 break;
4411 case MII_BMSR: /* Basic mode status register */
4412 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4413 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4414 BMSR_100BASE4;
4415 break;
4416 case MII_PHYSID1: /* PHYS ID 1 */
4417 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4418 dev->dev_addr[2];
4419 rc = (rc >> 5) & 0xFFFF;
4420 break;
4421 case MII_PHYSID2: /* PHYS ID 2 */
4422 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4423 break;
4424 case MII_ADVERTISE: /* Advertisement control reg */
4425 rc = ADVERTISE_ALL;
4426 break;
4427 case MII_LPA: /* Link partner ability reg */
4428 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4429 LPA_100BASE4 | LPA_LPACK;
4430 break;
4431 case MII_EXPANSION: /* Expansion register */
4432 break;
4433 case MII_DCOUNTER: /* disconnect counter */
4434 break;
4435 case MII_FCSCOUNTER: /* false carrier counter */
4436 break;
4437 case MII_NWAYTEST: /* N-way auto-neg test register */
4438 break;
4439 case MII_RERRCOUNTER: /* rx error counter */
4440 rc = card->stats.rx_errors;
4441 break;
4442 case MII_SREVISION: /* silicon revision */
4443 break;
4444 case MII_RESV1: /* reserved 1 */
4445 break;
4446 case MII_LBRERROR: /* loopback, rx, bypass error */
4447 break;
4448 case MII_PHYADDR: /* physical address */
4449 break;
4450 case MII_RESV2: /* reserved 2 */
4451 break;
4452 case MII_TPISTATUS: /* TPI status for 10mbps */
4453 break;
4454 case MII_NCONFIG: /* network interface config */
4455 break;
4456 default:
4457 break;
4458 }
4459 return rc;
4460 }
4461 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4462
4463 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4464 struct qeth_cmd_buffer *iob, int len,
4465 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4466 unsigned long),
4467 void *reply_param)
4468 {
4469 u16 s1, s2;
4470
4471 QETH_CARD_TEXT(card, 4, "sendsnmp");
4472
4473 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4474 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4475 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4476 /* adjust PDU length fields in IPA_PDU_HEADER */
4477 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4478 s2 = (u32) len;
4479 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4480 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4481 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4482 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4483 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4484 reply_cb, reply_param);
4485 }
4486
4487 static int qeth_snmp_command_cb(struct qeth_card *card,
4488 struct qeth_reply *reply, unsigned long sdata)
4489 {
4490 struct qeth_ipa_cmd *cmd;
4491 struct qeth_arp_query_info *qinfo;
4492 struct qeth_snmp_cmd *snmp;
4493 unsigned char *data;
4494 __u16 data_len;
4495
4496 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4497
4498 cmd = (struct qeth_ipa_cmd *) sdata;
4499 data = (unsigned char *)((char *)cmd - reply->offset);
4500 qinfo = (struct qeth_arp_query_info *) reply->param;
4501 snmp = &cmd->data.setadapterparms.data.snmp;
4502
4503 if (cmd->hdr.return_code) {
4504 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4505 return 0;
4506 }
4507 if (cmd->data.setadapterparms.hdr.return_code) {
4508 cmd->hdr.return_code =
4509 cmd->data.setadapterparms.hdr.return_code;
4510 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4511 return 0;
4512 }
4513 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4514 if (cmd->data.setadapterparms.hdr.seq_no == 1)
4515 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4516 else
4517 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4518
4519 /* check if there is enough room in userspace */
4520 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4521 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4522 cmd->hdr.return_code = IPA_RC_ENOMEM;
4523 return 0;
4524 }
4525 QETH_CARD_TEXT_(card, 4, "snore%i",
4526 cmd->data.setadapterparms.hdr.used_total);
4527 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4528 cmd->data.setadapterparms.hdr.seq_no);
4529 /*copy entries to user buffer*/
4530 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4531 memcpy(qinfo->udata + qinfo->udata_offset,
4532 (char *)snmp,
4533 data_len + offsetof(struct qeth_snmp_cmd, data));
4534 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4535 } else {
4536 memcpy(qinfo->udata + qinfo->udata_offset,
4537 (char *)&snmp->request, data_len);
4538 }
4539 qinfo->udata_offset += data_len;
4540 /* check if all replies received ... */
4541 QETH_CARD_TEXT_(card, 4, "srtot%i",
4542 cmd->data.setadapterparms.hdr.used_total);
4543 QETH_CARD_TEXT_(card, 4, "srseq%i",
4544 cmd->data.setadapterparms.hdr.seq_no);
4545 if (cmd->data.setadapterparms.hdr.seq_no <
4546 cmd->data.setadapterparms.hdr.used_total)
4547 return 1;
4548 return 0;
4549 }
4550
4551 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4552 {
4553 struct qeth_cmd_buffer *iob;
4554 struct qeth_ipa_cmd *cmd;
4555 struct qeth_snmp_ureq *ureq;
4556 unsigned int req_len;
4557 struct qeth_arp_query_info qinfo = {0, };
4558 int rc = 0;
4559
4560 QETH_CARD_TEXT(card, 3, "snmpcmd");
4561
4562 if (card->info.guestlan)
4563 return -EOPNOTSUPP;
4564
4565 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4566 (!card->options.layer2)) {
4567 return -EOPNOTSUPP;
4568 }
4569 /* skip 4 bytes (data_len struct member) to get req_len */
4570 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4571 return -EFAULT;
4572 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4573 sizeof(struct qeth_ipacmd_hdr) -
4574 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4575 return -EINVAL;
4576 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4577 if (IS_ERR(ureq)) {
4578 QETH_CARD_TEXT(card, 2, "snmpnome");
4579 return PTR_ERR(ureq);
4580 }
4581 qinfo.udata_len = ureq->hdr.data_len;
4582 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4583 if (!qinfo.udata) {
4584 kfree(ureq);
4585 return -ENOMEM;
4586 }
4587 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4588
4589 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4590 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4591 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4592 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4593 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4594 qeth_snmp_command_cb, (void *)&qinfo);
4595 if (rc)
4596 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4597 QETH_CARD_IFNAME(card), rc);
4598 else {
4599 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4600 rc = -EFAULT;
4601 }
4602
4603 kfree(ureq);
4604 kfree(qinfo.udata);
4605 return rc;
4606 }
4607 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4608
4609 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4610 struct qeth_reply *reply, unsigned long data)
4611 {
4612 struct qeth_ipa_cmd *cmd;
4613 struct qeth_qoat_priv *priv;
4614 char *resdata;
4615 int resdatalen;
4616
4617 QETH_CARD_TEXT(card, 3, "qoatcb");
4618
4619 cmd = (struct qeth_ipa_cmd *)data;
4620 priv = (struct qeth_qoat_priv *)reply->param;
4621 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4622 resdata = (char *)data + 28;
4623
4624 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4625 cmd->hdr.return_code = IPA_RC_FFFF;
4626 return 0;
4627 }
4628
4629 memcpy((priv->buffer + priv->response_len), resdata,
4630 resdatalen);
4631 priv->response_len += resdatalen;
4632
4633 if (cmd->data.setadapterparms.hdr.seq_no <
4634 cmd->data.setadapterparms.hdr.used_total)
4635 return 1;
4636 return 0;
4637 }
4638
4639 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4640 {
4641 int rc = 0;
4642 struct qeth_cmd_buffer *iob;
4643 struct qeth_ipa_cmd *cmd;
4644 struct qeth_query_oat *oat_req;
4645 struct qeth_query_oat_data oat_data;
4646 struct qeth_qoat_priv priv;
4647 void __user *tmp;
4648
4649 QETH_CARD_TEXT(card, 3, "qoatcmd");
4650
4651 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4652 rc = -EOPNOTSUPP;
4653 goto out;
4654 }
4655
4656 if (copy_from_user(&oat_data, udata,
4657 sizeof(struct qeth_query_oat_data))) {
4658 rc = -EFAULT;
4659 goto out;
4660 }
4661
4662 priv.buffer_len = oat_data.buffer_len;
4663 priv.response_len = 0;
4664 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL);
4665 if (!priv.buffer) {
4666 rc = -ENOMEM;
4667 goto out;
4668 }
4669
4670 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4671 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4672 sizeof(struct qeth_query_oat));
4673 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4674 oat_req = &cmd->data.setadapterparms.data.query_oat;
4675 oat_req->subcmd_code = oat_data.command;
4676
4677 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4678 &priv);
4679 if (!rc) {
4680 if (is_compat_task())
4681 tmp = compat_ptr(oat_data.ptr);
4682 else
4683 tmp = (void __user *)(unsigned long)oat_data.ptr;
4684
4685 if (copy_to_user(tmp, priv.buffer,
4686 priv.response_len)) {
4687 rc = -EFAULT;
4688 goto out_free;
4689 }
4690
4691 oat_data.response_len = priv.response_len;
4692
4693 if (copy_to_user(udata, &oat_data,
4694 sizeof(struct qeth_query_oat_data)))
4695 rc = -EFAULT;
4696 } else
4697 if (rc == IPA_RC_FFFF)
4698 rc = -EFAULT;
4699
4700 out_free:
4701 kfree(priv.buffer);
4702 out:
4703 return rc;
4704 }
4705 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4706
4707 static int qeth_query_card_info_cb(struct qeth_card *card,
4708 struct qeth_reply *reply, unsigned long data)
4709 {
4710 struct qeth_ipa_cmd *cmd;
4711 struct qeth_query_card_info *card_info;
4712 struct carrier_info *carrier_info;
4713
4714 QETH_CARD_TEXT(card, 2, "qcrdincb");
4715 carrier_info = (struct carrier_info *)reply->param;
4716 cmd = (struct qeth_ipa_cmd *)data;
4717 card_info = &cmd->data.setadapterparms.data.card_info;
4718 if (cmd->data.setadapterparms.hdr.return_code == 0) {
4719 carrier_info->card_type = card_info->card_type;
4720 carrier_info->port_mode = card_info->port_mode;
4721 carrier_info->port_speed = card_info->port_speed;
4722 }
4723
4724 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4725 return 0;
4726 }
4727
4728 static int qeth_query_card_info(struct qeth_card *card,
4729 struct carrier_info *carrier_info)
4730 {
4731 struct qeth_cmd_buffer *iob;
4732
4733 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4734 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4735 return -EOPNOTSUPP;
4736 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4737 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4738 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4739 (void *)carrier_info);
4740 }
4741
4742 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4743 {
4744 switch (card->info.type) {
4745 case QETH_CARD_TYPE_IQD:
4746 return 2;
4747 default:
4748 return 0;
4749 }
4750 }
4751
4752 static void qeth_determine_capabilities(struct qeth_card *card)
4753 {
4754 int rc;
4755 int length;
4756 char *prcd;
4757 struct ccw_device *ddev;
4758 int ddev_offline = 0;
4759
4760 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4761 ddev = CARD_DDEV(card);
4762 if (!ddev->online) {
4763 ddev_offline = 1;
4764 rc = ccw_device_set_online(ddev);
4765 if (rc) {
4766 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4767 goto out;
4768 }
4769 }
4770
4771 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4772 if (rc) {
4773 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4774 dev_name(&card->gdev->dev), rc);
4775 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4776 goto out_offline;
4777 }
4778 qeth_configure_unitaddr(card, prcd);
4779 if (ddev_offline)
4780 qeth_configure_blkt_default(card, prcd);
4781 kfree(prcd);
4782
4783 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4784 if (rc)
4785 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4786
4787 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4788 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4789 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4790 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4791 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4792 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4793 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4794 dev_info(&card->gdev->dev,
4795 "Completion Queueing supported\n");
4796 } else {
4797 card->options.cq = QETH_CQ_NOTAVAILABLE;
4798 }
4799
4800
4801 out_offline:
4802 if (ddev_offline == 1)
4803 ccw_device_set_offline(ddev);
4804 out:
4805 return;
4806 }
4807
4808 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4809 struct qdio_buffer **in_sbal_ptrs,
4810 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4811 int i;
4812
4813 if (card->options.cq == QETH_CQ_ENABLED) {
4814 int offset = QDIO_MAX_BUFFERS_PER_Q *
4815 (card->qdio.no_in_queues - 1);
4816 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4817 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4818 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4819 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4820 }
4821
4822 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4823 }
4824 }
4825
4826 static int qeth_qdio_establish(struct qeth_card *card)
4827 {
4828 struct qdio_initialize init_data;
4829 char *qib_param_field;
4830 struct qdio_buffer **in_sbal_ptrs;
4831 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4832 struct qdio_buffer **out_sbal_ptrs;
4833 int i, j, k;
4834 int rc = 0;
4835
4836 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4837
4838 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4839 GFP_KERNEL);
4840 if (!qib_param_field) {
4841 rc = -ENOMEM;
4842 goto out_free_nothing;
4843 }
4844
4845 qeth_create_qib_param_field(card, qib_param_field);
4846 qeth_create_qib_param_field_blkt(card, qib_param_field);
4847
4848 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4849 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4850 GFP_KERNEL);
4851 if (!in_sbal_ptrs) {
4852 rc = -ENOMEM;
4853 goto out_free_qib_param;
4854 }
4855 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4856 in_sbal_ptrs[i] = (struct qdio_buffer *)
4857 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4858 }
4859
4860 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4861 GFP_KERNEL);
4862 if (!queue_start_poll) {
4863 rc = -ENOMEM;
4864 goto out_free_in_sbals;
4865 }
4866 for (i = 0; i < card->qdio.no_in_queues; ++i)
4867 queue_start_poll[i] = card->discipline->start_poll;
4868
4869 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4870
4871 out_sbal_ptrs =
4872 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4873 sizeof(void *), GFP_KERNEL);
4874 if (!out_sbal_ptrs) {
4875 rc = -ENOMEM;
4876 goto out_free_queue_start_poll;
4877 }
4878 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4879 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4880 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4881 card->qdio.out_qs[i]->bufs[j]->buffer);
4882 }
4883
4884 memset(&init_data, 0, sizeof(struct qdio_initialize));
4885 init_data.cdev = CARD_DDEV(card);
4886 init_data.q_format = qeth_get_qdio_q_format(card);
4887 init_data.qib_param_field_format = 0;
4888 init_data.qib_param_field = qib_param_field;
4889 init_data.no_input_qs = card->qdio.no_in_queues;
4890 init_data.no_output_qs = card->qdio.no_out_queues;
4891 init_data.input_handler = card->discipline->input_handler;
4892 init_data.output_handler = card->discipline->output_handler;
4893 init_data.queue_start_poll_array = queue_start_poll;
4894 init_data.int_parm = (unsigned long) card;
4895 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
4896 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4897 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4898 init_data.scan_threshold =
4899 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4900
4901 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4902 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4903 rc = qdio_allocate(&init_data);
4904 if (rc) {
4905 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4906 goto out;
4907 }
4908 rc = qdio_establish(&init_data);
4909 if (rc) {
4910 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4911 qdio_free(CARD_DDEV(card));
4912 }
4913 }
4914
4915 switch (card->options.cq) {
4916 case QETH_CQ_ENABLED:
4917 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4918 break;
4919 case QETH_CQ_DISABLED:
4920 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4921 break;
4922 default:
4923 break;
4924 }
4925 out:
4926 kfree(out_sbal_ptrs);
4927 out_free_queue_start_poll:
4928 kfree(queue_start_poll);
4929 out_free_in_sbals:
4930 kfree(in_sbal_ptrs);
4931 out_free_qib_param:
4932 kfree(qib_param_field);
4933 out_free_nothing:
4934 return rc;
4935 }
4936
4937 static void qeth_core_free_card(struct qeth_card *card)
4938 {
4939
4940 QETH_DBF_TEXT(SETUP, 2, "freecrd");
4941 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4942 qeth_clean_channel(&card->read);
4943 qeth_clean_channel(&card->write);
4944 if (card->dev)
4945 free_netdev(card->dev);
4946 kfree(card->ip_tbd_list);
4947 qeth_free_qdio_buffers(card);
4948 unregister_service_level(&card->qeth_service_level);
4949 kfree(card);
4950 }
4951
4952 void qeth_trace_features(struct qeth_card *card)
4953 {
4954 QETH_CARD_TEXT(card, 2, "features");
4955 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4956 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4957 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4958 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4959 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4960 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4961 QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4962 }
4963 EXPORT_SYMBOL_GPL(qeth_trace_features);
4964
4965 static struct ccw_device_id qeth_ids[] = {
4966 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4967 .driver_info = QETH_CARD_TYPE_OSD},
4968 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4969 .driver_info = QETH_CARD_TYPE_IQD},
4970 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4971 .driver_info = QETH_CARD_TYPE_OSN},
4972 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4973 .driver_info = QETH_CARD_TYPE_OSM},
4974 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4975 .driver_info = QETH_CARD_TYPE_OSX},
4976 {},
4977 };
4978 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4979
4980 static struct ccw_driver qeth_ccw_driver = {
4981 .driver = {
4982 .owner = THIS_MODULE,
4983 .name = "qeth",
4984 },
4985 .ids = qeth_ids,
4986 .probe = ccwgroup_probe_ccwdev,
4987 .remove = ccwgroup_remove_ccwdev,
4988 };
4989
4990 int qeth_core_hardsetup_card(struct qeth_card *card)
4991 {
4992 int retries = 3;
4993 int rc;
4994
4995 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4996 atomic_set(&card->force_alloc_skb, 0);
4997 qeth_update_from_chp_desc(card);
4998 retry:
4999 if (retries < 3)
5000 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5001 dev_name(&card->gdev->dev));
5002 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5003 ccw_device_set_offline(CARD_DDEV(card));
5004 ccw_device_set_offline(CARD_WDEV(card));
5005 ccw_device_set_offline(CARD_RDEV(card));
5006 qdio_free(CARD_DDEV(card));
5007 rc = ccw_device_set_online(CARD_RDEV(card));
5008 if (rc)
5009 goto retriable;
5010 rc = ccw_device_set_online(CARD_WDEV(card));
5011 if (rc)
5012 goto retriable;
5013 rc = ccw_device_set_online(CARD_DDEV(card));
5014 if (rc)
5015 goto retriable;
5016 retriable:
5017 if (rc == -ERESTARTSYS) {
5018 QETH_DBF_TEXT(SETUP, 2, "break1");
5019 return rc;
5020 } else if (rc) {
5021 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5022 if (--retries < 0)
5023 goto out;
5024 else
5025 goto retry;
5026 }
5027 qeth_determine_capabilities(card);
5028 qeth_init_tokens(card);
5029 qeth_init_func_level(card);
5030 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5031 if (rc == -ERESTARTSYS) {
5032 QETH_DBF_TEXT(SETUP, 2, "break2");
5033 return rc;
5034 } else if (rc) {
5035 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5036 if (--retries < 0)
5037 goto out;
5038 else
5039 goto retry;
5040 }
5041 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5042 if (rc == -ERESTARTSYS) {
5043 QETH_DBF_TEXT(SETUP, 2, "break3");
5044 return rc;
5045 } else if (rc) {
5046 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5047 if (--retries < 0)
5048 goto out;
5049 else
5050 goto retry;
5051 }
5052 card->read_or_write_problem = 0;
5053 rc = qeth_mpc_initialize(card);
5054 if (rc) {
5055 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5056 goto out;
5057 }
5058
5059 card->options.ipa4.supported_funcs = 0;
5060 card->options.adp.supported_funcs = 0;
5061 card->options.sbp.supported_funcs = 0;
5062 card->info.diagass_support = 0;
5063 qeth_query_ipassists(card, QETH_PROT_IPV4);
5064 if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
5065 qeth_query_setadapterparms(card);
5066 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
5067 qeth_query_setdiagass(card);
5068 return 0;
5069 out:
5070 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5071 "an error on the device\n");
5072 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5073 dev_name(&card->gdev->dev), rc);
5074 return rc;
5075 }
5076 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5077
5078 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5079 struct qdio_buffer_element *element,
5080 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5081 {
5082 struct page *page = virt_to_page(element->addr);
5083 if (*pskb == NULL) {
5084 if (qethbuffer->rx_skb) {
5085 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5086 *pskb = qethbuffer->rx_skb;
5087 qethbuffer->rx_skb = NULL;
5088 } else {
5089 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5090 if (!(*pskb))
5091 return -ENOMEM;
5092 }
5093
5094 skb_reserve(*pskb, ETH_HLEN);
5095 if (data_len <= QETH_RX_PULL_LEN) {
5096 memcpy(skb_put(*pskb, data_len), element->addr + offset,
5097 data_len);
5098 } else {
5099 get_page(page);
5100 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5101 element->addr + offset, QETH_RX_PULL_LEN);
5102 skb_fill_page_desc(*pskb, *pfrag, page,
5103 offset + QETH_RX_PULL_LEN,
5104 data_len - QETH_RX_PULL_LEN);
5105 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5106 (*pskb)->len += data_len - QETH_RX_PULL_LEN;
5107 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5108 (*pfrag)++;
5109 }
5110 } else {
5111 get_page(page);
5112 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5113 (*pskb)->data_len += data_len;
5114 (*pskb)->len += data_len;
5115 (*pskb)->truesize += data_len;
5116 (*pfrag)++;
5117 }
5118
5119
5120 return 0;
5121 }
5122
5123 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5124 {
5125 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5126 }
5127
5128 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5129 struct qeth_qdio_buffer *qethbuffer,
5130 struct qdio_buffer_element **__element, int *__offset,
5131 struct qeth_hdr **hdr)
5132 {
5133 struct qdio_buffer_element *element = *__element;
5134 struct qdio_buffer *buffer = qethbuffer->buffer;
5135 int offset = *__offset;
5136 struct sk_buff *skb = NULL;
5137 int skb_len = 0;
5138 void *data_ptr;
5139 int data_len;
5140 int headroom = 0;
5141 int use_rx_sg = 0;
5142 int frag = 0;
5143
5144 /* qeth_hdr must not cross element boundaries */
5145 if (element->length < offset + sizeof(struct qeth_hdr)) {
5146 if (qeth_is_last_sbale(element))
5147 return NULL;
5148 element++;
5149 offset = 0;
5150 if (element->length < sizeof(struct qeth_hdr))
5151 return NULL;
5152 }
5153 *hdr = element->addr + offset;
5154
5155 offset += sizeof(struct qeth_hdr);
5156 switch ((*hdr)->hdr.l2.id) {
5157 case QETH_HEADER_TYPE_LAYER2:
5158 skb_len = (*hdr)->hdr.l2.pkt_length;
5159 break;
5160 case QETH_HEADER_TYPE_LAYER3:
5161 skb_len = (*hdr)->hdr.l3.length;
5162 headroom = ETH_HLEN;
5163 break;
5164 case QETH_HEADER_TYPE_OSN:
5165 skb_len = (*hdr)->hdr.osn.pdu_length;
5166 headroom = sizeof(struct qeth_hdr);
5167 break;
5168 default:
5169 break;
5170 }
5171
5172 if (!skb_len)
5173 return NULL;
5174
5175 if (((skb_len >= card->options.rx_sg_cb) &&
5176 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5177 (!atomic_read(&card->force_alloc_skb))) ||
5178 (card->options.cq == QETH_CQ_ENABLED)) {
5179 use_rx_sg = 1;
5180 } else {
5181 skb = dev_alloc_skb(skb_len + headroom);
5182 if (!skb)
5183 goto no_mem;
5184 if (headroom)
5185 skb_reserve(skb, headroom);
5186 }
5187
5188 data_ptr = element->addr + offset;
5189 while (skb_len) {
5190 data_len = min(skb_len, (int)(element->length - offset));
5191 if (data_len) {
5192 if (use_rx_sg) {
5193 if (qeth_create_skb_frag(qethbuffer, element,
5194 &skb, offset, &frag, data_len))
5195 goto no_mem;
5196 } else {
5197 memcpy(skb_put(skb, data_len), data_ptr,
5198 data_len);
5199 }
5200 }
5201 skb_len -= data_len;
5202 if (skb_len) {
5203 if (qeth_is_last_sbale(element)) {
5204 QETH_CARD_TEXT(card, 4, "unexeob");
5205 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5206 dev_kfree_skb_any(skb);
5207 card->stats.rx_errors++;
5208 return NULL;
5209 }
5210 element++;
5211 offset = 0;
5212 data_ptr = element->addr;
5213 } else {
5214 offset += data_len;
5215 }
5216 }
5217 *__element = element;
5218 *__offset = offset;
5219 if (use_rx_sg && card->options.performance_stats) {
5220 card->perf_stats.sg_skbs_rx++;
5221 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5222 }
5223 return skb;
5224 no_mem:
5225 if (net_ratelimit()) {
5226 QETH_CARD_TEXT(card, 2, "noskbmem");
5227 }
5228 card->stats.rx_dropped++;
5229 return NULL;
5230 }
5231 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5232
5233 static void qeth_unregister_dbf_views(void)
5234 {
5235 int x;
5236 for (x = 0; x < QETH_DBF_INFOS; x++) {
5237 debug_unregister(qeth_dbf[x].id);
5238 qeth_dbf[x].id = NULL;
5239 }
5240 }
5241
5242 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5243 {
5244 char dbf_txt_buf[32];
5245 va_list args;
5246
5247 if (!debug_level_enabled(id, level))
5248 return;
5249 va_start(args, fmt);
5250 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5251 va_end(args);
5252 debug_text_event(id, level, dbf_txt_buf);
5253 }
5254 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5255
5256 static int qeth_register_dbf_views(void)
5257 {
5258 int ret;
5259 int x;
5260
5261 for (x = 0; x < QETH_DBF_INFOS; x++) {
5262 /* register the areas */
5263 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5264 qeth_dbf[x].pages,
5265 qeth_dbf[x].areas,
5266 qeth_dbf[x].len);
5267 if (qeth_dbf[x].id == NULL) {
5268 qeth_unregister_dbf_views();
5269 return -ENOMEM;
5270 }
5271
5272 /* register a view */
5273 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5274 if (ret) {
5275 qeth_unregister_dbf_views();
5276 return ret;
5277 }
5278
5279 /* set a passing level */
5280 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5281 }
5282
5283 return 0;
5284 }
5285
5286 int qeth_core_load_discipline(struct qeth_card *card,
5287 enum qeth_discipline_id discipline)
5288 {
5289 int rc = 0;
5290 mutex_lock(&qeth_mod_mutex);
5291 switch (discipline) {
5292 case QETH_DISCIPLINE_LAYER3:
5293 card->discipline = try_then_request_module(
5294 symbol_get(qeth_l3_discipline), "qeth_l3");
5295 break;
5296 case QETH_DISCIPLINE_LAYER2:
5297 card->discipline = try_then_request_module(
5298 symbol_get(qeth_l2_discipline), "qeth_l2");
5299 break;
5300 }
5301 if (!card->discipline) {
5302 dev_err(&card->gdev->dev, "There is no kernel module to "
5303 "support discipline %d\n", discipline);
5304 rc = -EINVAL;
5305 }
5306 mutex_unlock(&qeth_mod_mutex);
5307 return rc;
5308 }
5309
5310 void qeth_core_free_discipline(struct qeth_card *card)
5311 {
5312 if (card->options.layer2)
5313 symbol_put(qeth_l2_discipline);
5314 else
5315 symbol_put(qeth_l3_discipline);
5316 card->discipline = NULL;
5317 }
5318
5319 static const struct device_type qeth_generic_devtype = {
5320 .name = "qeth_generic",
5321 .groups = qeth_generic_attr_groups,
5322 };
5323 static const struct device_type qeth_osn_devtype = {
5324 .name = "qeth_osn",
5325 .groups = qeth_osn_attr_groups,
5326 };
5327
5328 #define DBF_NAME_LEN 20
5329
5330 struct qeth_dbf_entry {
5331 char dbf_name[DBF_NAME_LEN];
5332 debug_info_t *dbf_info;
5333 struct list_head dbf_list;
5334 };
5335
5336 static LIST_HEAD(qeth_dbf_list);
5337 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5338
5339 static debug_info_t *qeth_get_dbf_entry(char *name)
5340 {
5341 struct qeth_dbf_entry *entry;
5342 debug_info_t *rc = NULL;
5343
5344 mutex_lock(&qeth_dbf_list_mutex);
5345 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5346 if (strcmp(entry->dbf_name, name) == 0) {
5347 rc = entry->dbf_info;
5348 break;
5349 }
5350 }
5351 mutex_unlock(&qeth_dbf_list_mutex);
5352 return rc;
5353 }
5354
5355 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5356 {
5357 struct qeth_dbf_entry *new_entry;
5358
5359 card->debug = debug_register(name, 2, 1, 8);
5360 if (!card->debug) {
5361 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5362 goto err;
5363 }
5364 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5365 goto err_dbg;
5366 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5367 if (!new_entry)
5368 goto err_dbg;
5369 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5370 new_entry->dbf_info = card->debug;
5371 mutex_lock(&qeth_dbf_list_mutex);
5372 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5373 mutex_unlock(&qeth_dbf_list_mutex);
5374
5375 return 0;
5376
5377 err_dbg:
5378 debug_unregister(card->debug);
5379 err:
5380 return -ENOMEM;
5381 }
5382
5383 static void qeth_clear_dbf_list(void)
5384 {
5385 struct qeth_dbf_entry *entry, *tmp;
5386
5387 mutex_lock(&qeth_dbf_list_mutex);
5388 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5389 list_del(&entry->dbf_list);
5390 debug_unregister(entry->dbf_info);
5391 kfree(entry);
5392 }
5393 mutex_unlock(&qeth_dbf_list_mutex);
5394 }
5395
5396 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5397 {
5398 struct qeth_card *card;
5399 struct device *dev;
5400 int rc;
5401 unsigned long flags;
5402 char dbf_name[DBF_NAME_LEN];
5403
5404 QETH_DBF_TEXT(SETUP, 2, "probedev");
5405
5406 dev = &gdev->dev;
5407 if (!get_device(dev))
5408 return -ENODEV;
5409
5410 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5411
5412 card = qeth_alloc_card();
5413 if (!card) {
5414 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5415 rc = -ENOMEM;
5416 goto err_dev;
5417 }
5418
5419 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5420 dev_name(&gdev->dev));
5421 card->debug = qeth_get_dbf_entry(dbf_name);
5422 if (!card->debug) {
5423 rc = qeth_add_dbf_entry(card, dbf_name);
5424 if (rc)
5425 goto err_card;
5426 }
5427
5428 card->read.ccwdev = gdev->cdev[0];
5429 card->write.ccwdev = gdev->cdev[1];
5430 card->data.ccwdev = gdev->cdev[2];
5431 dev_set_drvdata(&gdev->dev, card);
5432 card->gdev = gdev;
5433 gdev->cdev[0]->handler = qeth_irq;
5434 gdev->cdev[1]->handler = qeth_irq;
5435 gdev->cdev[2]->handler = qeth_irq;
5436
5437 rc = qeth_determine_card_type(card);
5438 if (rc) {
5439 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5440 goto err_card;
5441 }
5442 rc = qeth_setup_card(card);
5443 if (rc) {
5444 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5445 goto err_card;
5446 }
5447
5448 if (card->info.type == QETH_CARD_TYPE_OSN)
5449 gdev->dev.type = &qeth_osn_devtype;
5450 else
5451 gdev->dev.type = &qeth_generic_devtype;
5452
5453 switch (card->info.type) {
5454 case QETH_CARD_TYPE_OSN:
5455 case QETH_CARD_TYPE_OSM:
5456 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5457 if (rc)
5458 goto err_card;
5459 rc = card->discipline->setup(card->gdev);
5460 if (rc)
5461 goto err_disc;
5462 case QETH_CARD_TYPE_OSD:
5463 case QETH_CARD_TYPE_OSX:
5464 default:
5465 break;
5466 }
5467
5468 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5469 list_add_tail(&card->list, &qeth_core_card_list.list);
5470 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5471
5472 qeth_determine_capabilities(card);
5473 return 0;
5474
5475 err_disc:
5476 qeth_core_free_discipline(card);
5477 err_card:
5478 qeth_core_free_card(card);
5479 err_dev:
5480 put_device(dev);
5481 return rc;
5482 }
5483
5484 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5485 {
5486 unsigned long flags;
5487 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5488
5489 QETH_DBF_TEXT(SETUP, 2, "removedv");
5490
5491 if (card->discipline) {
5492 card->discipline->remove(gdev);
5493 qeth_core_free_discipline(card);
5494 }
5495
5496 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5497 list_del(&card->list);
5498 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5499 qeth_core_free_card(card);
5500 dev_set_drvdata(&gdev->dev, NULL);
5501 put_device(&gdev->dev);
5502 return;
5503 }
5504
5505 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5506 {
5507 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5508 int rc = 0;
5509 int def_discipline;
5510
5511 if (!card->discipline) {
5512 if (card->info.type == QETH_CARD_TYPE_IQD)
5513 def_discipline = QETH_DISCIPLINE_LAYER3;
5514 else
5515 def_discipline = QETH_DISCIPLINE_LAYER2;
5516 rc = qeth_core_load_discipline(card, def_discipline);
5517 if (rc)
5518 goto err;
5519 rc = card->discipline->setup(card->gdev);
5520 if (rc)
5521 goto err;
5522 }
5523 rc = card->discipline->set_online(gdev);
5524 err:
5525 return rc;
5526 }
5527
5528 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5529 {
5530 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5531 return card->discipline->set_offline(gdev);
5532 }
5533
5534 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5535 {
5536 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5537 if (card->discipline && card->discipline->shutdown)
5538 card->discipline->shutdown(gdev);
5539 }
5540
5541 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5542 {
5543 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5544 if (card->discipline && card->discipline->prepare)
5545 return card->discipline->prepare(gdev);
5546 return 0;
5547 }
5548
5549 static void qeth_core_complete(struct ccwgroup_device *gdev)
5550 {
5551 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5552 if (card->discipline && card->discipline->complete)
5553 card->discipline->complete(gdev);
5554 }
5555
5556 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5557 {
5558 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5559 if (card->discipline && card->discipline->freeze)
5560 return card->discipline->freeze(gdev);
5561 return 0;
5562 }
5563
5564 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5565 {
5566 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5567 if (card->discipline && card->discipline->thaw)
5568 return card->discipline->thaw(gdev);
5569 return 0;
5570 }
5571
5572 static int qeth_core_restore(struct ccwgroup_device *gdev)
5573 {
5574 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5575 if (card->discipline && card->discipline->restore)
5576 return card->discipline->restore(gdev);
5577 return 0;
5578 }
5579
5580 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5581 .driver = {
5582 .owner = THIS_MODULE,
5583 .name = "qeth",
5584 },
5585 .setup = qeth_core_probe_device,
5586 .remove = qeth_core_remove_device,
5587 .set_online = qeth_core_set_online,
5588 .set_offline = qeth_core_set_offline,
5589 .shutdown = qeth_core_shutdown,
5590 .prepare = qeth_core_prepare,
5591 .complete = qeth_core_complete,
5592 .freeze = qeth_core_freeze,
5593 .thaw = qeth_core_thaw,
5594 .restore = qeth_core_restore,
5595 };
5596
5597 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5598 const char *buf, size_t count)
5599 {
5600 int err;
5601
5602 err = ccwgroup_create_dev(qeth_core_root_dev,
5603 &qeth_core_ccwgroup_driver, 3, buf);
5604
5605 return err ? err : count;
5606 }
5607 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5608
5609 static struct attribute *qeth_drv_attrs[] = {
5610 &driver_attr_group.attr,
5611 NULL,
5612 };
5613 static struct attribute_group qeth_drv_attr_group = {
5614 .attrs = qeth_drv_attrs,
5615 };
5616 static const struct attribute_group *qeth_drv_attr_groups[] = {
5617 &qeth_drv_attr_group,
5618 NULL,
5619 };
5620
5621 static struct {
5622 const char str[ETH_GSTRING_LEN];
5623 } qeth_ethtool_stats_keys[] = {
5624 /* 0 */{"rx skbs"},
5625 {"rx buffers"},
5626 {"tx skbs"},
5627 {"tx buffers"},
5628 {"tx skbs no packing"},
5629 {"tx buffers no packing"},
5630 {"tx skbs packing"},
5631 {"tx buffers packing"},
5632 {"tx sg skbs"},
5633 {"tx sg frags"},
5634 /* 10 */{"rx sg skbs"},
5635 {"rx sg frags"},
5636 {"rx sg page allocs"},
5637 {"tx large kbytes"},
5638 {"tx large count"},
5639 {"tx pk state ch n->p"},
5640 {"tx pk state ch p->n"},
5641 {"tx pk watermark low"},
5642 {"tx pk watermark high"},
5643 {"queue 0 buffer usage"},
5644 /* 20 */{"queue 1 buffer usage"},
5645 {"queue 2 buffer usage"},
5646 {"queue 3 buffer usage"},
5647 {"rx poll time"},
5648 {"rx poll count"},
5649 {"rx do_QDIO time"},
5650 {"rx do_QDIO count"},
5651 {"tx handler time"},
5652 {"tx handler count"},
5653 {"tx time"},
5654 /* 30 */{"tx count"},
5655 {"tx do_QDIO time"},
5656 {"tx do_QDIO count"},
5657 {"tx csum"},
5658 {"tx lin"},
5659 {"cq handler count"},
5660 {"cq handler time"}
5661 };
5662
5663 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5664 {
5665 switch (stringset) {
5666 case ETH_SS_STATS:
5667 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5668 default:
5669 return -EINVAL;
5670 }
5671 }
5672 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5673
5674 void qeth_core_get_ethtool_stats(struct net_device *dev,
5675 struct ethtool_stats *stats, u64 *data)
5676 {
5677 struct qeth_card *card = dev->ml_priv;
5678 data[0] = card->stats.rx_packets -
5679 card->perf_stats.initial_rx_packets;
5680 data[1] = card->perf_stats.bufs_rec;
5681 data[2] = card->stats.tx_packets -
5682 card->perf_stats.initial_tx_packets;
5683 data[3] = card->perf_stats.bufs_sent;
5684 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5685 - card->perf_stats.skbs_sent_pack;
5686 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5687 data[6] = card->perf_stats.skbs_sent_pack;
5688 data[7] = card->perf_stats.bufs_sent_pack;
5689 data[8] = card->perf_stats.sg_skbs_sent;
5690 data[9] = card->perf_stats.sg_frags_sent;
5691 data[10] = card->perf_stats.sg_skbs_rx;
5692 data[11] = card->perf_stats.sg_frags_rx;
5693 data[12] = card->perf_stats.sg_alloc_page_rx;
5694 data[13] = (card->perf_stats.large_send_bytes >> 10);
5695 data[14] = card->perf_stats.large_send_cnt;
5696 data[15] = card->perf_stats.sc_dp_p;
5697 data[16] = card->perf_stats.sc_p_dp;
5698 data[17] = QETH_LOW_WATERMARK_PACK;
5699 data[18] = QETH_HIGH_WATERMARK_PACK;
5700 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5701 data[20] = (card->qdio.no_out_queues > 1) ?
5702 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5703 data[21] = (card->qdio.no_out_queues > 2) ?
5704 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5705 data[22] = (card->qdio.no_out_queues > 3) ?
5706 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5707 data[23] = card->perf_stats.inbound_time;
5708 data[24] = card->perf_stats.inbound_cnt;
5709 data[25] = card->perf_stats.inbound_do_qdio_time;
5710 data[26] = card->perf_stats.inbound_do_qdio_cnt;
5711 data[27] = card->perf_stats.outbound_handler_time;
5712 data[28] = card->perf_stats.outbound_handler_cnt;
5713 data[29] = card->perf_stats.outbound_time;
5714 data[30] = card->perf_stats.outbound_cnt;
5715 data[31] = card->perf_stats.outbound_do_qdio_time;
5716 data[32] = card->perf_stats.outbound_do_qdio_cnt;
5717 data[33] = card->perf_stats.tx_csum;
5718 data[34] = card->perf_stats.tx_lin;
5719 data[35] = card->perf_stats.cq_cnt;
5720 data[36] = card->perf_stats.cq_time;
5721 }
5722 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5723
5724 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5725 {
5726 switch (stringset) {
5727 case ETH_SS_STATS:
5728 memcpy(data, &qeth_ethtool_stats_keys,
5729 sizeof(qeth_ethtool_stats_keys));
5730 break;
5731 default:
5732 WARN_ON(1);
5733 break;
5734 }
5735 }
5736 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5737
5738 void qeth_core_get_drvinfo(struct net_device *dev,
5739 struct ethtool_drvinfo *info)
5740 {
5741 struct qeth_card *card = dev->ml_priv;
5742
5743 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5744 sizeof(info->driver));
5745 strlcpy(info->version, "1.0", sizeof(info->version));
5746 strlcpy(info->fw_version, card->info.mcl_level,
5747 sizeof(info->fw_version));
5748 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5749 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5750 }
5751 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5752
5753 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5754 /* Autoneg and full-duplex are supported and advertized uncondionally. */
5755 /* Always advertize and support all speeds up to specified, and only one */
5756 /* specified port type. */
5757 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5758 int maxspeed, int porttype)
5759 {
5760 int port_sup, port_adv, spd_sup, spd_adv;
5761
5762 switch (porttype) {
5763 case PORT_TP:
5764 port_sup = SUPPORTED_TP;
5765 port_adv = ADVERTISED_TP;
5766 break;
5767 case PORT_FIBRE:
5768 port_sup = SUPPORTED_FIBRE;
5769 port_adv = ADVERTISED_FIBRE;
5770 break;
5771 default:
5772 port_sup = SUPPORTED_TP;
5773 port_adv = ADVERTISED_TP;
5774 WARN_ON_ONCE(1);
5775 }
5776
5777 /* "Fallthrough" case'es ordered from high to low result in setting */
5778 /* flags cumulatively, starting from the specified speed and down to */
5779 /* the lowest possible. */
5780 spd_sup = 0;
5781 spd_adv = 0;
5782 switch (maxspeed) {
5783 case SPEED_10000:
5784 spd_sup |= SUPPORTED_10000baseT_Full;
5785 spd_adv |= ADVERTISED_10000baseT_Full;
5786 case SPEED_1000:
5787 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5788 spd_adv |= ADVERTISED_1000baseT_Half |
5789 ADVERTISED_1000baseT_Full;
5790 case SPEED_100:
5791 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5792 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5793 case SPEED_10:
5794 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5795 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5796 break;
5797 default:
5798 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5799 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5800 WARN_ON_ONCE(1);
5801 }
5802 ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5803 ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5804 }
5805
5806 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5807 struct ethtool_cmd *ecmd)
5808 {
5809 struct qeth_card *card = netdev->ml_priv;
5810 enum qeth_link_types link_type;
5811 struct carrier_info carrier_info;
5812 int rc;
5813 u32 speed;
5814
5815 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5816 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5817 else
5818 link_type = card->info.link_type;
5819
5820 ecmd->transceiver = XCVR_INTERNAL;
5821 ecmd->duplex = DUPLEX_FULL;
5822 ecmd->autoneg = AUTONEG_ENABLE;
5823
5824 switch (link_type) {
5825 case QETH_LINK_TYPE_FAST_ETH:
5826 case QETH_LINK_TYPE_LANE_ETH100:
5827 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5828 speed = SPEED_100;
5829 ecmd->port = PORT_TP;
5830 break;
5831
5832 case QETH_LINK_TYPE_GBIT_ETH:
5833 case QETH_LINK_TYPE_LANE_ETH1000:
5834 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5835 speed = SPEED_1000;
5836 ecmd->port = PORT_FIBRE;
5837 break;
5838
5839 case QETH_LINK_TYPE_10GBIT_ETH:
5840 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5841 speed = SPEED_10000;
5842 ecmd->port = PORT_FIBRE;
5843 break;
5844
5845 default:
5846 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5847 speed = SPEED_10;
5848 ecmd->port = PORT_TP;
5849 }
5850 ethtool_cmd_speed_set(ecmd, speed);
5851
5852 /* Check if we can obtain more accurate information. */
5853 /* If QUERY_CARD_INFO command is not supported or fails, */
5854 /* just return the heuristics that was filled above. */
5855 if (!qeth_card_hw_is_reachable(card))
5856 return -ENODEV;
5857 rc = qeth_query_card_info(card, &carrier_info);
5858 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
5859 return 0;
5860 if (rc) /* report error from the hardware operation */
5861 return rc;
5862 /* on success, fill in the information got from the hardware */
5863
5864 netdev_dbg(netdev,
5865 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5866 carrier_info.card_type,
5867 carrier_info.port_mode,
5868 carrier_info.port_speed);
5869
5870 /* Update attributes for which we've obtained more authoritative */
5871 /* information, leave the rest the way they where filled above. */
5872 switch (carrier_info.card_type) {
5873 case CARD_INFO_TYPE_1G_COPPER_A:
5874 case CARD_INFO_TYPE_1G_COPPER_B:
5875 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
5876 ecmd->port = PORT_TP;
5877 break;
5878 case CARD_INFO_TYPE_1G_FIBRE_A:
5879 case CARD_INFO_TYPE_1G_FIBRE_B:
5880 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5881 ecmd->port = PORT_FIBRE;
5882 break;
5883 case CARD_INFO_TYPE_10G_FIBRE_A:
5884 case CARD_INFO_TYPE_10G_FIBRE_B:
5885 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5886 ecmd->port = PORT_FIBRE;
5887 break;
5888 }
5889
5890 switch (carrier_info.port_mode) {
5891 case CARD_INFO_PORTM_FULLDUPLEX:
5892 ecmd->duplex = DUPLEX_FULL;
5893 break;
5894 case CARD_INFO_PORTM_HALFDUPLEX:
5895 ecmd->duplex = DUPLEX_HALF;
5896 break;
5897 }
5898
5899 switch (carrier_info.port_speed) {
5900 case CARD_INFO_PORTS_10M:
5901 speed = SPEED_10;
5902 break;
5903 case CARD_INFO_PORTS_100M:
5904 speed = SPEED_100;
5905 break;
5906 case CARD_INFO_PORTS_1G:
5907 speed = SPEED_1000;
5908 break;
5909 case CARD_INFO_PORTS_10G:
5910 speed = SPEED_10000;
5911 break;
5912 }
5913 ethtool_cmd_speed_set(ecmd, speed);
5914
5915 return 0;
5916 }
5917 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5918
5919 static int __init qeth_core_init(void)
5920 {
5921 int rc;
5922
5923 pr_info("loading core functions\n");
5924 INIT_LIST_HEAD(&qeth_core_card_list.list);
5925 INIT_LIST_HEAD(&qeth_dbf_list);
5926 rwlock_init(&qeth_core_card_list.rwlock);
5927 mutex_init(&qeth_mod_mutex);
5928
5929 qeth_wq = create_singlethread_workqueue("qeth_wq");
5930
5931 rc = qeth_register_dbf_views();
5932 if (rc)
5933 goto out_err;
5934 qeth_core_root_dev = root_device_register("qeth");
5935 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
5936 if (rc)
5937 goto register_err;
5938 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5939 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5940 if (!qeth_core_header_cache) {
5941 rc = -ENOMEM;
5942 goto slab_err;
5943 }
5944 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5945 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5946 if (!qeth_qdio_outbuf_cache) {
5947 rc = -ENOMEM;
5948 goto cqslab_err;
5949 }
5950 rc = ccw_driver_register(&qeth_ccw_driver);
5951 if (rc)
5952 goto ccw_err;
5953 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5954 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5955 if (rc)
5956 goto ccwgroup_err;
5957
5958 return 0;
5959
5960 ccwgroup_err:
5961 ccw_driver_unregister(&qeth_ccw_driver);
5962 ccw_err:
5963 kmem_cache_destroy(qeth_qdio_outbuf_cache);
5964 cqslab_err:
5965 kmem_cache_destroy(qeth_core_header_cache);
5966 slab_err:
5967 root_device_unregister(qeth_core_root_dev);
5968 register_err:
5969 qeth_unregister_dbf_views();
5970 out_err:
5971 pr_err("Initializing the qeth device driver failed\n");
5972 return rc;
5973 }
5974
5975 static void __exit qeth_core_exit(void)
5976 {
5977 qeth_clear_dbf_list();
5978 destroy_workqueue(qeth_wq);
5979 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5980 ccw_driver_unregister(&qeth_ccw_driver);
5981 kmem_cache_destroy(qeth_qdio_outbuf_cache);
5982 kmem_cache_destroy(qeth_core_header_cache);
5983 root_device_unregister(qeth_core_root_dev);
5984 qeth_unregister_dbf_views();
5985 pr_info("core functions removed\n");
5986 }
5987
5988 module_init(qeth_core_init);
5989 module_exit(qeth_core_exit);
5990 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5991 MODULE_DESCRIPTION("qeth core functions");
5992 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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