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Merge tag 'pci-v3.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
[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
24 #include <asm/ebcdic.h>
25 #include <asm/io.h>
26 #include <asm/sysinfo.h>
27 #include <asm/compat.h>
28
29 #include "qeth_core.h"
30
31 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
32 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
33 /* N P A M L V H */
34 [QETH_DBF_SETUP] = {"qeth_setup",
35 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
36 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
37 &debug_sprintf_view, NULL},
38 [QETH_DBF_CTRL] = {"qeth_control",
39 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
40 };
41 EXPORT_SYMBOL_GPL(qeth_dbf);
42
43 struct qeth_card_list_struct qeth_core_card_list;
44 EXPORT_SYMBOL_GPL(qeth_core_card_list);
45 struct kmem_cache *qeth_core_header_cache;
46 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
47 static struct kmem_cache *qeth_qdio_outbuf_cache;
48
49 static struct device *qeth_core_root_dev;
50 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
51 static struct lock_class_key qdio_out_skb_queue_key;
52 static struct mutex qeth_mod_mutex;
53
54 static void qeth_send_control_data_cb(struct qeth_channel *,
55 struct qeth_cmd_buffer *);
56 static int qeth_issue_next_read(struct qeth_card *);
57 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
58 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
59 static void qeth_free_buffer_pool(struct qeth_card *);
60 static int qeth_qdio_establish(struct qeth_card *);
61 static void qeth_free_qdio_buffers(struct qeth_card *);
62 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
63 struct qeth_qdio_out_buffer *buf,
64 enum iucv_tx_notify notification);
65 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
66 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
67 struct qeth_qdio_out_buffer *buf,
68 enum qeth_qdio_buffer_states newbufstate);
69 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
70
71 struct workqueue_struct *qeth_wq;
72 EXPORT_SYMBOL_GPL(qeth_wq);
73
74 static void qeth_close_dev_handler(struct work_struct *work)
75 {
76 struct qeth_card *card;
77
78 card = container_of(work, struct qeth_card, close_dev_work);
79 QETH_CARD_TEXT(card, 2, "cldevhdl");
80 rtnl_lock();
81 dev_close(card->dev);
82 rtnl_unlock();
83 ccwgroup_set_offline(card->gdev);
84 }
85
86 void qeth_close_dev(struct qeth_card *card)
87 {
88 QETH_CARD_TEXT(card, 2, "cldevsubm");
89 queue_work(qeth_wq, &card->close_dev_work);
90 }
91 EXPORT_SYMBOL_GPL(qeth_close_dev);
92
93 static inline const char *qeth_get_cardname(struct qeth_card *card)
94 {
95 if (card->info.guestlan) {
96 switch (card->info.type) {
97 case QETH_CARD_TYPE_OSD:
98 return " Virtual NIC QDIO";
99 case QETH_CARD_TYPE_IQD:
100 return " Virtual NIC Hiper";
101 case QETH_CARD_TYPE_OSM:
102 return " Virtual NIC QDIO - OSM";
103 case QETH_CARD_TYPE_OSX:
104 return " Virtual NIC QDIO - OSX";
105 default:
106 return " unknown";
107 }
108 } else {
109 switch (card->info.type) {
110 case QETH_CARD_TYPE_OSD:
111 return " OSD Express";
112 case QETH_CARD_TYPE_IQD:
113 return " HiperSockets";
114 case QETH_CARD_TYPE_OSN:
115 return " OSN QDIO";
116 case QETH_CARD_TYPE_OSM:
117 return " OSM QDIO";
118 case QETH_CARD_TYPE_OSX:
119 return " OSX QDIO";
120 default:
121 return " unknown";
122 }
123 }
124 return " n/a";
125 }
126
127 /* max length to be returned: 14 */
128 const char *qeth_get_cardname_short(struct qeth_card *card)
129 {
130 if (card->info.guestlan) {
131 switch (card->info.type) {
132 case QETH_CARD_TYPE_OSD:
133 return "Virt.NIC QDIO";
134 case QETH_CARD_TYPE_IQD:
135 return "Virt.NIC Hiper";
136 case QETH_CARD_TYPE_OSM:
137 return "Virt.NIC OSM";
138 case QETH_CARD_TYPE_OSX:
139 return "Virt.NIC OSX";
140 default:
141 return "unknown";
142 }
143 } else {
144 switch (card->info.type) {
145 case QETH_CARD_TYPE_OSD:
146 switch (card->info.link_type) {
147 case QETH_LINK_TYPE_FAST_ETH:
148 return "OSD_100";
149 case QETH_LINK_TYPE_HSTR:
150 return "HSTR";
151 case QETH_LINK_TYPE_GBIT_ETH:
152 return "OSD_1000";
153 case QETH_LINK_TYPE_10GBIT_ETH:
154 return "OSD_10GIG";
155 case QETH_LINK_TYPE_LANE_ETH100:
156 return "OSD_FE_LANE";
157 case QETH_LINK_TYPE_LANE_TR:
158 return "OSD_TR_LANE";
159 case QETH_LINK_TYPE_LANE_ETH1000:
160 return "OSD_GbE_LANE";
161 case QETH_LINK_TYPE_LANE:
162 return "OSD_ATM_LANE";
163 default:
164 return "OSD_Express";
165 }
166 case QETH_CARD_TYPE_IQD:
167 return "HiperSockets";
168 case QETH_CARD_TYPE_OSN:
169 return "OSN";
170 case QETH_CARD_TYPE_OSM:
171 return "OSM_1000";
172 case QETH_CARD_TYPE_OSX:
173 return "OSX_10GIG";
174 default:
175 return "unknown";
176 }
177 }
178 return "n/a";
179 }
180
181 void qeth_set_recovery_task(struct qeth_card *card)
182 {
183 card->recovery_task = current;
184 }
185 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
186
187 void qeth_clear_recovery_task(struct qeth_card *card)
188 {
189 card->recovery_task = NULL;
190 }
191 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
192
193 static bool qeth_is_recovery_task(const struct qeth_card *card)
194 {
195 return card->recovery_task == current;
196 }
197
198 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
199 int clear_start_mask)
200 {
201 unsigned long flags;
202
203 spin_lock_irqsave(&card->thread_mask_lock, flags);
204 card->thread_allowed_mask = threads;
205 if (clear_start_mask)
206 card->thread_start_mask &= threads;
207 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
208 wake_up(&card->wait_q);
209 }
210 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
211
212 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
213 {
214 unsigned long flags;
215 int rc = 0;
216
217 spin_lock_irqsave(&card->thread_mask_lock, flags);
218 rc = (card->thread_running_mask & threads);
219 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
220 return rc;
221 }
222 EXPORT_SYMBOL_GPL(qeth_threads_running);
223
224 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
225 {
226 if (qeth_is_recovery_task(card))
227 return 0;
228 return wait_event_interruptible(card->wait_q,
229 qeth_threads_running(card, threads) == 0);
230 }
231 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
232
233 void qeth_clear_working_pool_list(struct qeth_card *card)
234 {
235 struct qeth_buffer_pool_entry *pool_entry, *tmp;
236
237 QETH_CARD_TEXT(card, 5, "clwrklst");
238 list_for_each_entry_safe(pool_entry, tmp,
239 &card->qdio.in_buf_pool.entry_list, list){
240 list_del(&pool_entry->list);
241 }
242 }
243 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
244
245 static int qeth_alloc_buffer_pool(struct qeth_card *card)
246 {
247 struct qeth_buffer_pool_entry *pool_entry;
248 void *ptr;
249 int i, j;
250
251 QETH_CARD_TEXT(card, 5, "alocpool");
252 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
253 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
254 if (!pool_entry) {
255 qeth_free_buffer_pool(card);
256 return -ENOMEM;
257 }
258 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
259 ptr = (void *) __get_free_page(GFP_KERNEL);
260 if (!ptr) {
261 while (j > 0)
262 free_page((unsigned long)
263 pool_entry->elements[--j]);
264 kfree(pool_entry);
265 qeth_free_buffer_pool(card);
266 return -ENOMEM;
267 }
268 pool_entry->elements[j] = ptr;
269 }
270 list_add(&pool_entry->init_list,
271 &card->qdio.init_pool.entry_list);
272 }
273 return 0;
274 }
275
276 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
277 {
278 QETH_CARD_TEXT(card, 2, "realcbp");
279
280 if ((card->state != CARD_STATE_DOWN) &&
281 (card->state != CARD_STATE_RECOVER))
282 return -EPERM;
283
284 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
285 qeth_clear_working_pool_list(card);
286 qeth_free_buffer_pool(card);
287 card->qdio.in_buf_pool.buf_count = bufcnt;
288 card->qdio.init_pool.buf_count = bufcnt;
289 return qeth_alloc_buffer_pool(card);
290 }
291 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
292
293 static inline int qeth_cq_init(struct qeth_card *card)
294 {
295 int rc;
296
297 if (card->options.cq == QETH_CQ_ENABLED) {
298 QETH_DBF_TEXT(SETUP, 2, "cqinit");
299 memset(card->qdio.c_q->qdio_bufs, 0,
300 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
301 card->qdio.c_q->next_buf_to_init = 127;
302 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
303 card->qdio.no_in_queues - 1, 0,
304 127);
305 if (rc) {
306 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
307 goto out;
308 }
309 }
310 rc = 0;
311 out:
312 return rc;
313 }
314
315 static inline int qeth_alloc_cq(struct qeth_card *card)
316 {
317 int rc;
318
319 if (card->options.cq == QETH_CQ_ENABLED) {
320 int i;
321 struct qdio_outbuf_state *outbuf_states;
322
323 QETH_DBF_TEXT(SETUP, 2, "cqon");
324 card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
325 GFP_KERNEL);
326 if (!card->qdio.c_q) {
327 rc = -1;
328 goto kmsg_out;
329 }
330 QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
331
332 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
333 card->qdio.c_q->bufs[i].buffer =
334 &card->qdio.c_q->qdio_bufs[i];
335 }
336
337 card->qdio.no_in_queues = 2;
338
339 card->qdio.out_bufstates =
340 kzalloc(card->qdio.no_out_queues *
341 QDIO_MAX_BUFFERS_PER_Q *
342 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
343 outbuf_states = card->qdio.out_bufstates;
344 if (outbuf_states == NULL) {
345 rc = -1;
346 goto free_cq_out;
347 }
348 for (i = 0; i < card->qdio.no_out_queues; ++i) {
349 card->qdio.out_qs[i]->bufstates = outbuf_states;
350 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
351 }
352 } else {
353 QETH_DBF_TEXT(SETUP, 2, "nocq");
354 card->qdio.c_q = NULL;
355 card->qdio.no_in_queues = 1;
356 }
357 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
358 rc = 0;
359 out:
360 return rc;
361 free_cq_out:
362 kfree(card->qdio.c_q);
363 card->qdio.c_q = NULL;
364 kmsg_out:
365 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
366 goto out;
367 }
368
369 static inline void qeth_free_cq(struct qeth_card *card)
370 {
371 if (card->qdio.c_q) {
372 --card->qdio.no_in_queues;
373 kfree(card->qdio.c_q);
374 card->qdio.c_q = NULL;
375 }
376 kfree(card->qdio.out_bufstates);
377 card->qdio.out_bufstates = NULL;
378 }
379
380 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
381 int delayed) {
382 enum iucv_tx_notify n;
383
384 switch (sbalf15) {
385 case 0:
386 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
387 break;
388 case 4:
389 case 16:
390 case 17:
391 case 18:
392 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
393 TX_NOTIFY_UNREACHABLE;
394 break;
395 default:
396 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
397 TX_NOTIFY_GENERALERROR;
398 break;
399 }
400
401 return n;
402 }
403
404 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
405 int bidx, int forced_cleanup)
406 {
407 if (q->card->options.cq != QETH_CQ_ENABLED)
408 return;
409
410 if (q->bufs[bidx]->next_pending != NULL) {
411 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
412 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
413
414 while (c) {
415 if (forced_cleanup ||
416 atomic_read(&c->state) ==
417 QETH_QDIO_BUF_HANDLED_DELAYED) {
418 struct qeth_qdio_out_buffer *f = c;
419 QETH_CARD_TEXT(f->q->card, 5, "fp");
420 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
421 /* release here to avoid interleaving between
422 outbound tasklet and inbound tasklet
423 regarding notifications and lifecycle */
424 qeth_release_skbs(c);
425
426 c = f->next_pending;
427 WARN_ON_ONCE(head->next_pending != f);
428 head->next_pending = c;
429 kmem_cache_free(qeth_qdio_outbuf_cache, f);
430 } else {
431 head = c;
432 c = c->next_pending;
433 }
434
435 }
436 }
437 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
438 QETH_QDIO_BUF_HANDLED_DELAYED)) {
439 /* for recovery situations */
440 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
441 qeth_init_qdio_out_buf(q, bidx);
442 QETH_CARD_TEXT(q->card, 2, "clprecov");
443 }
444 }
445
446
447 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
448 unsigned long phys_aob_addr) {
449 struct qaob *aob;
450 struct qeth_qdio_out_buffer *buffer;
451 enum iucv_tx_notify notification;
452
453 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
454 QETH_CARD_TEXT(card, 5, "haob");
455 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
456 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
457 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
458
459 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
460 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
461 notification = TX_NOTIFY_OK;
462 } else {
463 WARN_ON_ONCE(atomic_read(&buffer->state) !=
464 QETH_QDIO_BUF_PENDING);
465 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
466 notification = TX_NOTIFY_DELAYED_OK;
467 }
468
469 if (aob->aorc != 0) {
470 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
471 notification = qeth_compute_cq_notification(aob->aorc, 1);
472 }
473 qeth_notify_skbs(buffer->q, buffer, notification);
474
475 buffer->aob = NULL;
476 qeth_clear_output_buffer(buffer->q, buffer,
477 QETH_QDIO_BUF_HANDLED_DELAYED);
478
479 /* from here on: do not touch buffer anymore */
480 qdio_release_aob(aob);
481 }
482
483 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
484 {
485 return card->options.cq == QETH_CQ_ENABLED &&
486 card->qdio.c_q != NULL &&
487 queue != 0 &&
488 queue == card->qdio.no_in_queues - 1;
489 }
490
491
492 static int qeth_issue_next_read(struct qeth_card *card)
493 {
494 int rc;
495 struct qeth_cmd_buffer *iob;
496
497 QETH_CARD_TEXT(card, 5, "issnxrd");
498 if (card->read.state != CH_STATE_UP)
499 return -EIO;
500 iob = qeth_get_buffer(&card->read);
501 if (!iob) {
502 dev_warn(&card->gdev->dev, "The qeth device driver "
503 "failed to recover an error on the device\n");
504 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
505 "available\n", dev_name(&card->gdev->dev));
506 return -ENOMEM;
507 }
508 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
509 QETH_CARD_TEXT(card, 6, "noirqpnd");
510 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
511 (addr_t) iob, 0, 0);
512 if (rc) {
513 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
514 "rc=%i\n", dev_name(&card->gdev->dev), rc);
515 atomic_set(&card->read.irq_pending, 0);
516 card->read_or_write_problem = 1;
517 qeth_schedule_recovery(card);
518 wake_up(&card->wait_q);
519 }
520 return rc;
521 }
522
523 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
524 {
525 struct qeth_reply *reply;
526
527 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
528 if (reply) {
529 atomic_set(&reply->refcnt, 1);
530 atomic_set(&reply->received, 0);
531 reply->card = card;
532 }
533 return reply;
534 }
535
536 static void qeth_get_reply(struct qeth_reply *reply)
537 {
538 WARN_ON(atomic_read(&reply->refcnt) <= 0);
539 atomic_inc(&reply->refcnt);
540 }
541
542 static void qeth_put_reply(struct qeth_reply *reply)
543 {
544 WARN_ON(atomic_read(&reply->refcnt) <= 0);
545 if (atomic_dec_and_test(&reply->refcnt))
546 kfree(reply);
547 }
548
549 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
550 struct qeth_card *card)
551 {
552 char *ipa_name;
553 int com = cmd->hdr.command;
554 ipa_name = qeth_get_ipa_cmd_name(com);
555 if (rc)
556 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
557 "x%X \"%s\"\n",
558 ipa_name, com, dev_name(&card->gdev->dev),
559 QETH_CARD_IFNAME(card), rc,
560 qeth_get_ipa_msg(rc));
561 else
562 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
563 ipa_name, com, dev_name(&card->gdev->dev),
564 QETH_CARD_IFNAME(card));
565 }
566
567 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
568 struct qeth_cmd_buffer *iob)
569 {
570 struct qeth_ipa_cmd *cmd = NULL;
571
572 QETH_CARD_TEXT(card, 5, "chkipad");
573 if (IS_IPA(iob->data)) {
574 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
575 if (IS_IPA_REPLY(cmd)) {
576 if (cmd->hdr.command != IPA_CMD_SETCCID &&
577 cmd->hdr.command != IPA_CMD_DELCCID &&
578 cmd->hdr.command != IPA_CMD_MODCCID &&
579 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
580 qeth_issue_ipa_msg(cmd,
581 cmd->hdr.return_code, card);
582 return cmd;
583 } else {
584 switch (cmd->hdr.command) {
585 case IPA_CMD_STOPLAN:
586 if (cmd->hdr.return_code ==
587 IPA_RC_VEPA_TO_VEB_TRANSITION) {
588 dev_err(&card->gdev->dev,
589 "Interface %s is down because the "
590 "adjacent port is no longer in "
591 "reflective relay mode\n",
592 QETH_CARD_IFNAME(card));
593 qeth_close_dev(card);
594 } else {
595 dev_warn(&card->gdev->dev,
596 "The link for interface %s on CHPID"
597 " 0x%X failed\n",
598 QETH_CARD_IFNAME(card),
599 card->info.chpid);
600 qeth_issue_ipa_msg(cmd,
601 cmd->hdr.return_code, card);
602 }
603 card->lan_online = 0;
604 if (card->dev && netif_carrier_ok(card->dev))
605 netif_carrier_off(card->dev);
606 return NULL;
607 case IPA_CMD_STARTLAN:
608 dev_info(&card->gdev->dev,
609 "The link for %s on CHPID 0x%X has"
610 " been restored\n",
611 QETH_CARD_IFNAME(card),
612 card->info.chpid);
613 netif_carrier_on(card->dev);
614 card->lan_online = 1;
615 if (card->info.hwtrap)
616 card->info.hwtrap = 2;
617 qeth_schedule_recovery(card);
618 return NULL;
619 case IPA_CMD_SETBRIDGEPORT:
620 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
621 if (card->discipline->control_event_handler
622 (card, cmd))
623 return cmd;
624 else
625 return NULL;
626 case IPA_CMD_MODCCID:
627 return cmd;
628 case IPA_CMD_REGISTER_LOCAL_ADDR:
629 QETH_CARD_TEXT(card, 3, "irla");
630 break;
631 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
632 QETH_CARD_TEXT(card, 3, "urla");
633 break;
634 default:
635 QETH_DBF_MESSAGE(2, "Received data is IPA "
636 "but not a reply!\n");
637 break;
638 }
639 }
640 }
641 return cmd;
642 }
643
644 void qeth_clear_ipacmd_list(struct qeth_card *card)
645 {
646 struct qeth_reply *reply, *r;
647 unsigned long flags;
648
649 QETH_CARD_TEXT(card, 4, "clipalst");
650
651 spin_lock_irqsave(&card->lock, flags);
652 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
653 qeth_get_reply(reply);
654 reply->rc = -EIO;
655 atomic_inc(&reply->received);
656 list_del_init(&reply->list);
657 wake_up(&reply->wait_q);
658 qeth_put_reply(reply);
659 }
660 spin_unlock_irqrestore(&card->lock, flags);
661 atomic_set(&card->write.irq_pending, 0);
662 }
663 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
664
665 static int qeth_check_idx_response(struct qeth_card *card,
666 unsigned char *buffer)
667 {
668 if (!buffer)
669 return 0;
670
671 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
672 if ((buffer[2] & 0xc0) == 0xc0) {
673 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
674 "with cause code 0x%02x%s\n",
675 buffer[4],
676 ((buffer[4] == 0x22) ?
677 " -- try another portname" : ""));
678 QETH_CARD_TEXT(card, 2, "ckidxres");
679 QETH_CARD_TEXT(card, 2, " idxterm");
680 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
681 if (buffer[4] == 0xf6) {
682 dev_err(&card->gdev->dev,
683 "The qeth device is not configured "
684 "for the OSI layer required by z/VM\n");
685 return -EPERM;
686 }
687 return -EIO;
688 }
689 return 0;
690 }
691
692 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
693 __u32 len)
694 {
695 struct qeth_card *card;
696
697 card = CARD_FROM_CDEV(channel->ccwdev);
698 QETH_CARD_TEXT(card, 4, "setupccw");
699 if (channel == &card->read)
700 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
701 else
702 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
703 channel->ccw.count = len;
704 channel->ccw.cda = (__u32) __pa(iob);
705 }
706
707 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
708 {
709 __u8 index;
710
711 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
712 index = channel->io_buf_no;
713 do {
714 if (channel->iob[index].state == BUF_STATE_FREE) {
715 channel->iob[index].state = BUF_STATE_LOCKED;
716 channel->io_buf_no = (channel->io_buf_no + 1) %
717 QETH_CMD_BUFFER_NO;
718 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
719 return channel->iob + index;
720 }
721 index = (index + 1) % QETH_CMD_BUFFER_NO;
722 } while (index != channel->io_buf_no);
723
724 return NULL;
725 }
726
727 void qeth_release_buffer(struct qeth_channel *channel,
728 struct qeth_cmd_buffer *iob)
729 {
730 unsigned long flags;
731
732 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
733 spin_lock_irqsave(&channel->iob_lock, flags);
734 memset(iob->data, 0, QETH_BUFSIZE);
735 iob->state = BUF_STATE_FREE;
736 iob->callback = qeth_send_control_data_cb;
737 iob->rc = 0;
738 spin_unlock_irqrestore(&channel->iob_lock, flags);
739 wake_up(&channel->wait_q);
740 }
741 EXPORT_SYMBOL_GPL(qeth_release_buffer);
742
743 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
744 {
745 struct qeth_cmd_buffer *buffer = NULL;
746 unsigned long flags;
747
748 spin_lock_irqsave(&channel->iob_lock, flags);
749 buffer = __qeth_get_buffer(channel);
750 spin_unlock_irqrestore(&channel->iob_lock, flags);
751 return buffer;
752 }
753
754 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
755 {
756 struct qeth_cmd_buffer *buffer;
757 wait_event(channel->wait_q,
758 ((buffer = qeth_get_buffer(channel)) != NULL));
759 return buffer;
760 }
761 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
762
763 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
764 {
765 int cnt;
766
767 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
768 qeth_release_buffer(channel, &channel->iob[cnt]);
769 channel->buf_no = 0;
770 channel->io_buf_no = 0;
771 }
772 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
773
774 static void qeth_send_control_data_cb(struct qeth_channel *channel,
775 struct qeth_cmd_buffer *iob)
776 {
777 struct qeth_card *card;
778 struct qeth_reply *reply, *r;
779 struct qeth_ipa_cmd *cmd;
780 unsigned long flags;
781 int keep_reply;
782 int rc = 0;
783
784 card = CARD_FROM_CDEV(channel->ccwdev);
785 QETH_CARD_TEXT(card, 4, "sndctlcb");
786 rc = qeth_check_idx_response(card, iob->data);
787 switch (rc) {
788 case 0:
789 break;
790 case -EIO:
791 qeth_clear_ipacmd_list(card);
792 qeth_schedule_recovery(card);
793 /* fall through */
794 default:
795 goto out;
796 }
797
798 cmd = qeth_check_ipa_data(card, iob);
799 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
800 goto out;
801 /*in case of OSN : check if cmd is set */
802 if (card->info.type == QETH_CARD_TYPE_OSN &&
803 cmd &&
804 cmd->hdr.command != IPA_CMD_STARTLAN &&
805 card->osn_info.assist_cb != NULL) {
806 card->osn_info.assist_cb(card->dev, cmd);
807 goto out;
808 }
809
810 spin_lock_irqsave(&card->lock, flags);
811 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
812 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
813 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
814 qeth_get_reply(reply);
815 list_del_init(&reply->list);
816 spin_unlock_irqrestore(&card->lock, flags);
817 keep_reply = 0;
818 if (reply->callback != NULL) {
819 if (cmd) {
820 reply->offset = (__u16)((char *)cmd -
821 (char *)iob->data);
822 keep_reply = reply->callback(card,
823 reply,
824 (unsigned long)cmd);
825 } else
826 keep_reply = reply->callback(card,
827 reply,
828 (unsigned long)iob);
829 }
830 if (cmd)
831 reply->rc = (u16) cmd->hdr.return_code;
832 else if (iob->rc)
833 reply->rc = iob->rc;
834 if (keep_reply) {
835 spin_lock_irqsave(&card->lock, flags);
836 list_add_tail(&reply->list,
837 &card->cmd_waiter_list);
838 spin_unlock_irqrestore(&card->lock, flags);
839 } else {
840 atomic_inc(&reply->received);
841 wake_up(&reply->wait_q);
842 }
843 qeth_put_reply(reply);
844 goto out;
845 }
846 }
847 spin_unlock_irqrestore(&card->lock, flags);
848 out:
849 memcpy(&card->seqno.pdu_hdr_ack,
850 QETH_PDU_HEADER_SEQ_NO(iob->data),
851 QETH_SEQ_NO_LENGTH);
852 qeth_release_buffer(channel, iob);
853 }
854
855 static int qeth_setup_channel(struct qeth_channel *channel)
856 {
857 int cnt;
858
859 QETH_DBF_TEXT(SETUP, 2, "setupch");
860 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
861 channel->iob[cnt].data =
862 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
863 if (channel->iob[cnt].data == NULL)
864 break;
865 channel->iob[cnt].state = BUF_STATE_FREE;
866 channel->iob[cnt].channel = channel;
867 channel->iob[cnt].callback = qeth_send_control_data_cb;
868 channel->iob[cnt].rc = 0;
869 }
870 if (cnt < QETH_CMD_BUFFER_NO) {
871 while (cnt-- > 0)
872 kfree(channel->iob[cnt].data);
873 return -ENOMEM;
874 }
875 channel->buf_no = 0;
876 channel->io_buf_no = 0;
877 atomic_set(&channel->irq_pending, 0);
878 spin_lock_init(&channel->iob_lock);
879
880 init_waitqueue_head(&channel->wait_q);
881 return 0;
882 }
883
884 static int qeth_set_thread_start_bit(struct qeth_card *card,
885 unsigned long thread)
886 {
887 unsigned long flags;
888
889 spin_lock_irqsave(&card->thread_mask_lock, flags);
890 if (!(card->thread_allowed_mask & thread) ||
891 (card->thread_start_mask & thread)) {
892 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
893 return -EPERM;
894 }
895 card->thread_start_mask |= thread;
896 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
897 return 0;
898 }
899
900 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
901 {
902 unsigned long flags;
903
904 spin_lock_irqsave(&card->thread_mask_lock, flags);
905 card->thread_start_mask &= ~thread;
906 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
907 wake_up(&card->wait_q);
908 }
909 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
910
911 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
912 {
913 unsigned long flags;
914
915 spin_lock_irqsave(&card->thread_mask_lock, flags);
916 card->thread_running_mask &= ~thread;
917 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
918 wake_up(&card->wait_q);
919 }
920 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
921
922 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
923 {
924 unsigned long flags;
925 int rc = 0;
926
927 spin_lock_irqsave(&card->thread_mask_lock, flags);
928 if (card->thread_start_mask & thread) {
929 if ((card->thread_allowed_mask & thread) &&
930 !(card->thread_running_mask & thread)) {
931 rc = 1;
932 card->thread_start_mask &= ~thread;
933 card->thread_running_mask |= thread;
934 } else
935 rc = -EPERM;
936 }
937 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
938 return rc;
939 }
940
941 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
942 {
943 int rc = 0;
944
945 wait_event(card->wait_q,
946 (rc = __qeth_do_run_thread(card, thread)) >= 0);
947 return rc;
948 }
949 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
950
951 void qeth_schedule_recovery(struct qeth_card *card)
952 {
953 QETH_CARD_TEXT(card, 2, "startrec");
954 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
955 schedule_work(&card->kernel_thread_starter);
956 }
957 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
958
959 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
960 {
961 int dstat, cstat;
962 char *sense;
963 struct qeth_card *card;
964
965 sense = (char *) irb->ecw;
966 cstat = irb->scsw.cmd.cstat;
967 dstat = irb->scsw.cmd.dstat;
968 card = CARD_FROM_CDEV(cdev);
969
970 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
971 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
972 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
973 QETH_CARD_TEXT(card, 2, "CGENCHK");
974 dev_warn(&cdev->dev, "The qeth device driver "
975 "failed to recover an error on the device\n");
976 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
977 dev_name(&cdev->dev), dstat, cstat);
978 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
979 16, 1, irb, 64, 1);
980 return 1;
981 }
982
983 if (dstat & DEV_STAT_UNIT_CHECK) {
984 if (sense[SENSE_RESETTING_EVENT_BYTE] &
985 SENSE_RESETTING_EVENT_FLAG) {
986 QETH_CARD_TEXT(card, 2, "REVIND");
987 return 1;
988 }
989 if (sense[SENSE_COMMAND_REJECT_BYTE] &
990 SENSE_COMMAND_REJECT_FLAG) {
991 QETH_CARD_TEXT(card, 2, "CMDREJi");
992 return 1;
993 }
994 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
995 QETH_CARD_TEXT(card, 2, "AFFE");
996 return 1;
997 }
998 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
999 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1000 return 0;
1001 }
1002 QETH_CARD_TEXT(card, 2, "DGENCHK");
1003 return 1;
1004 }
1005 return 0;
1006 }
1007
1008 static long __qeth_check_irb_error(struct ccw_device *cdev,
1009 unsigned long intparm, struct irb *irb)
1010 {
1011 struct qeth_card *card;
1012
1013 card = CARD_FROM_CDEV(cdev);
1014
1015 if (!IS_ERR(irb))
1016 return 0;
1017
1018 switch (PTR_ERR(irb)) {
1019 case -EIO:
1020 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1021 dev_name(&cdev->dev));
1022 QETH_CARD_TEXT(card, 2, "ckirberr");
1023 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1024 break;
1025 case -ETIMEDOUT:
1026 dev_warn(&cdev->dev, "A hardware operation timed out"
1027 " on the device\n");
1028 QETH_CARD_TEXT(card, 2, "ckirberr");
1029 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1030 if (intparm == QETH_RCD_PARM) {
1031 if (card && (card->data.ccwdev == cdev)) {
1032 card->data.state = CH_STATE_DOWN;
1033 wake_up(&card->wait_q);
1034 }
1035 }
1036 break;
1037 default:
1038 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1039 dev_name(&cdev->dev), PTR_ERR(irb));
1040 QETH_CARD_TEXT(card, 2, "ckirberr");
1041 QETH_CARD_TEXT(card, 2, " rc???");
1042 }
1043 return PTR_ERR(irb);
1044 }
1045
1046 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1047 struct irb *irb)
1048 {
1049 int rc;
1050 int cstat, dstat;
1051 struct qeth_cmd_buffer *buffer;
1052 struct qeth_channel *channel;
1053 struct qeth_card *card;
1054 struct qeth_cmd_buffer *iob;
1055 __u8 index;
1056
1057 if (__qeth_check_irb_error(cdev, intparm, irb))
1058 return;
1059 cstat = irb->scsw.cmd.cstat;
1060 dstat = irb->scsw.cmd.dstat;
1061
1062 card = CARD_FROM_CDEV(cdev);
1063 if (!card)
1064 return;
1065
1066 QETH_CARD_TEXT(card, 5, "irq");
1067
1068 if (card->read.ccwdev == cdev) {
1069 channel = &card->read;
1070 QETH_CARD_TEXT(card, 5, "read");
1071 } else if (card->write.ccwdev == cdev) {
1072 channel = &card->write;
1073 QETH_CARD_TEXT(card, 5, "write");
1074 } else {
1075 channel = &card->data;
1076 QETH_CARD_TEXT(card, 5, "data");
1077 }
1078 atomic_set(&channel->irq_pending, 0);
1079
1080 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1081 channel->state = CH_STATE_STOPPED;
1082
1083 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1084 channel->state = CH_STATE_HALTED;
1085
1086 /*let's wake up immediately on data channel*/
1087 if ((channel == &card->data) && (intparm != 0) &&
1088 (intparm != QETH_RCD_PARM))
1089 goto out;
1090
1091 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1092 QETH_CARD_TEXT(card, 6, "clrchpar");
1093 /* we don't have to handle this further */
1094 intparm = 0;
1095 }
1096 if (intparm == QETH_HALT_CHANNEL_PARM) {
1097 QETH_CARD_TEXT(card, 6, "hltchpar");
1098 /* we don't have to handle this further */
1099 intparm = 0;
1100 }
1101 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1102 (dstat & DEV_STAT_UNIT_CHECK) ||
1103 (cstat)) {
1104 if (irb->esw.esw0.erw.cons) {
1105 dev_warn(&channel->ccwdev->dev,
1106 "The qeth device driver failed to recover "
1107 "an error on the device\n");
1108 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1109 "0x%X dstat 0x%X\n",
1110 dev_name(&channel->ccwdev->dev), cstat, dstat);
1111 print_hex_dump(KERN_WARNING, "qeth: irb ",
1112 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1113 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1114 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1115 }
1116 if (intparm == QETH_RCD_PARM) {
1117 channel->state = CH_STATE_DOWN;
1118 goto out;
1119 }
1120 rc = qeth_get_problem(cdev, irb);
1121 if (rc) {
1122 qeth_clear_ipacmd_list(card);
1123 qeth_schedule_recovery(card);
1124 goto out;
1125 }
1126 }
1127
1128 if (intparm == QETH_RCD_PARM) {
1129 channel->state = CH_STATE_RCD_DONE;
1130 goto out;
1131 }
1132 if (intparm) {
1133 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1134 buffer->state = BUF_STATE_PROCESSED;
1135 }
1136 if (channel == &card->data)
1137 return;
1138 if (channel == &card->read &&
1139 channel->state == CH_STATE_UP)
1140 qeth_issue_next_read(card);
1141
1142 iob = channel->iob;
1143 index = channel->buf_no;
1144 while (iob[index].state == BUF_STATE_PROCESSED) {
1145 if (iob[index].callback != NULL)
1146 iob[index].callback(channel, iob + index);
1147
1148 index = (index + 1) % QETH_CMD_BUFFER_NO;
1149 }
1150 channel->buf_no = index;
1151 out:
1152 wake_up(&card->wait_q);
1153 return;
1154 }
1155
1156 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1157 struct qeth_qdio_out_buffer *buf,
1158 enum iucv_tx_notify notification)
1159 {
1160 struct sk_buff *skb;
1161
1162 if (skb_queue_empty(&buf->skb_list))
1163 goto out;
1164 skb = skb_peek(&buf->skb_list);
1165 while (skb) {
1166 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1167 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1168 if (skb->protocol == ETH_P_AF_IUCV) {
1169 if (skb->sk) {
1170 struct iucv_sock *iucv = iucv_sk(skb->sk);
1171 iucv->sk_txnotify(skb, notification);
1172 }
1173 }
1174 if (skb_queue_is_last(&buf->skb_list, skb))
1175 skb = NULL;
1176 else
1177 skb = skb_queue_next(&buf->skb_list, skb);
1178 }
1179 out:
1180 return;
1181 }
1182
1183 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1184 {
1185 struct sk_buff *skb;
1186 struct iucv_sock *iucv;
1187 int notify_general_error = 0;
1188
1189 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1190 notify_general_error = 1;
1191
1192 /* release may never happen from within CQ tasklet scope */
1193 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1194
1195 skb = skb_dequeue(&buf->skb_list);
1196 while (skb) {
1197 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1198 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1199 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1200 if (skb->sk) {
1201 iucv = iucv_sk(skb->sk);
1202 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1203 }
1204 }
1205 atomic_dec(&skb->users);
1206 dev_kfree_skb_any(skb);
1207 skb = skb_dequeue(&buf->skb_list);
1208 }
1209 }
1210
1211 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1212 struct qeth_qdio_out_buffer *buf,
1213 enum qeth_qdio_buffer_states newbufstate)
1214 {
1215 int i;
1216
1217 /* is PCI flag set on buffer? */
1218 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1219 atomic_dec(&queue->set_pci_flags_count);
1220
1221 if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1222 qeth_release_skbs(buf);
1223 }
1224 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1225 if (buf->buffer->element[i].addr && buf->is_header[i])
1226 kmem_cache_free(qeth_core_header_cache,
1227 buf->buffer->element[i].addr);
1228 buf->is_header[i] = 0;
1229 buf->buffer->element[i].length = 0;
1230 buf->buffer->element[i].addr = NULL;
1231 buf->buffer->element[i].eflags = 0;
1232 buf->buffer->element[i].sflags = 0;
1233 }
1234 buf->buffer->element[15].eflags = 0;
1235 buf->buffer->element[15].sflags = 0;
1236 buf->next_element_to_fill = 0;
1237 atomic_set(&buf->state, newbufstate);
1238 }
1239
1240 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1241 {
1242 int j;
1243
1244 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1245 if (!q->bufs[j])
1246 continue;
1247 qeth_cleanup_handled_pending(q, j, 1);
1248 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1249 if (free) {
1250 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1251 q->bufs[j] = NULL;
1252 }
1253 }
1254 }
1255
1256 void qeth_clear_qdio_buffers(struct qeth_card *card)
1257 {
1258 int i;
1259
1260 QETH_CARD_TEXT(card, 2, "clearqdbf");
1261 /* clear outbound buffers to free skbs */
1262 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1263 if (card->qdio.out_qs[i]) {
1264 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1265 }
1266 }
1267 }
1268 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1269
1270 static void qeth_free_buffer_pool(struct qeth_card *card)
1271 {
1272 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1273 int i = 0;
1274 list_for_each_entry_safe(pool_entry, tmp,
1275 &card->qdio.init_pool.entry_list, init_list){
1276 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1277 free_page((unsigned long)pool_entry->elements[i]);
1278 list_del(&pool_entry->init_list);
1279 kfree(pool_entry);
1280 }
1281 }
1282
1283 static void qeth_free_qdio_buffers(struct qeth_card *card)
1284 {
1285 int i, j;
1286
1287 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1288 QETH_QDIO_UNINITIALIZED)
1289 return;
1290
1291 qeth_free_cq(card);
1292 cancel_delayed_work_sync(&card->buffer_reclaim_work);
1293 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1294 if (card->qdio.in_q->bufs[j].rx_skb)
1295 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
1296 }
1297 kfree(card->qdio.in_q);
1298 card->qdio.in_q = NULL;
1299 /* inbound buffer pool */
1300 qeth_free_buffer_pool(card);
1301 /* free outbound qdio_qs */
1302 if (card->qdio.out_qs) {
1303 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1304 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1305 kfree(card->qdio.out_qs[i]);
1306 }
1307 kfree(card->qdio.out_qs);
1308 card->qdio.out_qs = NULL;
1309 }
1310 }
1311
1312 static void qeth_clean_channel(struct qeth_channel *channel)
1313 {
1314 int cnt;
1315
1316 QETH_DBF_TEXT(SETUP, 2, "freech");
1317 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1318 kfree(channel->iob[cnt].data);
1319 }
1320
1321 static void qeth_set_single_write_queues(struct qeth_card *card)
1322 {
1323 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1324 (card->qdio.no_out_queues == 4))
1325 qeth_free_qdio_buffers(card);
1326
1327 card->qdio.no_out_queues = 1;
1328 if (card->qdio.default_out_queue != 0)
1329 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1330
1331 card->qdio.default_out_queue = 0;
1332 }
1333
1334 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1335 {
1336 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1337 (card->qdio.no_out_queues == 1)) {
1338 qeth_free_qdio_buffers(card);
1339 card->qdio.default_out_queue = 2;
1340 }
1341 card->qdio.no_out_queues = 4;
1342 }
1343
1344 static void qeth_update_from_chp_desc(struct qeth_card *card)
1345 {
1346 struct ccw_device *ccwdev;
1347 struct channelPath_dsc {
1348 u8 flags;
1349 u8 lsn;
1350 u8 desc;
1351 u8 chpid;
1352 u8 swla;
1353 u8 zeroes;
1354 u8 chla;
1355 u8 chpp;
1356 } *chp_dsc;
1357
1358 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1359
1360 ccwdev = card->data.ccwdev;
1361 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1362 if (!chp_dsc)
1363 goto out;
1364
1365 card->info.func_level = 0x4100 + chp_dsc->desc;
1366 if (card->info.type == QETH_CARD_TYPE_IQD)
1367 goto out;
1368
1369 /* CHPP field bit 6 == 1 -> single queue */
1370 if ((chp_dsc->chpp & 0x02) == 0x02)
1371 qeth_set_single_write_queues(card);
1372 else
1373 qeth_set_multiple_write_queues(card);
1374 out:
1375 kfree(chp_dsc);
1376 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1377 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1378 }
1379
1380 static void qeth_init_qdio_info(struct qeth_card *card)
1381 {
1382 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1383 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1384 /* inbound */
1385 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1386 if (card->info.type == QETH_CARD_TYPE_IQD)
1387 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1388 else
1389 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1390 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1391 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1392 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1393 }
1394
1395 static void qeth_set_intial_options(struct qeth_card *card)
1396 {
1397 card->options.route4.type = NO_ROUTER;
1398 card->options.route6.type = NO_ROUTER;
1399 card->options.fake_broadcast = 0;
1400 card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1401 card->options.performance_stats = 0;
1402 card->options.rx_sg_cb = QETH_RX_SG_CB;
1403 card->options.isolation = ISOLATION_MODE_NONE;
1404 card->options.cq = QETH_CQ_DISABLED;
1405 }
1406
1407 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1408 {
1409 unsigned long flags;
1410 int rc = 0;
1411
1412 spin_lock_irqsave(&card->thread_mask_lock, flags);
1413 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1414 (u8) card->thread_start_mask,
1415 (u8) card->thread_allowed_mask,
1416 (u8) card->thread_running_mask);
1417 rc = (card->thread_start_mask & thread);
1418 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1419 return rc;
1420 }
1421
1422 static void qeth_start_kernel_thread(struct work_struct *work)
1423 {
1424 struct task_struct *ts;
1425 struct qeth_card *card = container_of(work, struct qeth_card,
1426 kernel_thread_starter);
1427 QETH_CARD_TEXT(card , 2, "strthrd");
1428
1429 if (card->read.state != CH_STATE_UP &&
1430 card->write.state != CH_STATE_UP)
1431 return;
1432 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1433 ts = kthread_run(card->discipline->recover, (void *)card,
1434 "qeth_recover");
1435 if (IS_ERR(ts)) {
1436 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1437 qeth_clear_thread_running_bit(card,
1438 QETH_RECOVER_THREAD);
1439 }
1440 }
1441 }
1442
1443 static int qeth_setup_card(struct qeth_card *card)
1444 {
1445
1446 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1447 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1448
1449 card->read.state = CH_STATE_DOWN;
1450 card->write.state = CH_STATE_DOWN;
1451 card->data.state = CH_STATE_DOWN;
1452 card->state = CARD_STATE_DOWN;
1453 card->lan_online = 0;
1454 card->read_or_write_problem = 0;
1455 card->dev = NULL;
1456 spin_lock_init(&card->vlanlock);
1457 spin_lock_init(&card->mclock);
1458 spin_lock_init(&card->lock);
1459 spin_lock_init(&card->ip_lock);
1460 spin_lock_init(&card->thread_mask_lock);
1461 mutex_init(&card->conf_mutex);
1462 mutex_init(&card->discipline_mutex);
1463 card->thread_start_mask = 0;
1464 card->thread_allowed_mask = 0;
1465 card->thread_running_mask = 0;
1466 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1467 INIT_LIST_HEAD(&card->ip_list);
1468 INIT_LIST_HEAD(card->ip_tbd_list);
1469 INIT_LIST_HEAD(&card->cmd_waiter_list);
1470 init_waitqueue_head(&card->wait_q);
1471 /* initial options */
1472 qeth_set_intial_options(card);
1473 /* IP address takeover */
1474 INIT_LIST_HEAD(&card->ipato.entries);
1475 card->ipato.enabled = 0;
1476 card->ipato.invert4 = 0;
1477 card->ipato.invert6 = 0;
1478 /* init QDIO stuff */
1479 qeth_init_qdio_info(card);
1480 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1481 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1482 return 0;
1483 }
1484
1485 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1486 {
1487 struct qeth_card *card = container_of(slr, struct qeth_card,
1488 qeth_service_level);
1489 if (card->info.mcl_level[0])
1490 seq_printf(m, "qeth: %s firmware level %s\n",
1491 CARD_BUS_ID(card), card->info.mcl_level);
1492 }
1493
1494 static struct qeth_card *qeth_alloc_card(void)
1495 {
1496 struct qeth_card *card;
1497
1498 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1499 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1500 if (!card)
1501 goto out;
1502 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1503 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1504 if (!card->ip_tbd_list) {
1505 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1506 goto out_card;
1507 }
1508 if (qeth_setup_channel(&card->read))
1509 goto out_ip;
1510 if (qeth_setup_channel(&card->write))
1511 goto out_channel;
1512 card->options.layer2 = -1;
1513 card->qeth_service_level.seq_print = qeth_core_sl_print;
1514 register_service_level(&card->qeth_service_level);
1515 return card;
1516
1517 out_channel:
1518 qeth_clean_channel(&card->read);
1519 out_ip:
1520 kfree(card->ip_tbd_list);
1521 out_card:
1522 kfree(card);
1523 out:
1524 return NULL;
1525 }
1526
1527 static int qeth_determine_card_type(struct qeth_card *card)
1528 {
1529 int i = 0;
1530
1531 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1532
1533 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1534 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1535 while (known_devices[i][QETH_DEV_MODEL_IND]) {
1536 if ((CARD_RDEV(card)->id.dev_type ==
1537 known_devices[i][QETH_DEV_TYPE_IND]) &&
1538 (CARD_RDEV(card)->id.dev_model ==
1539 known_devices[i][QETH_DEV_MODEL_IND])) {
1540 card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1541 card->qdio.no_out_queues =
1542 known_devices[i][QETH_QUEUE_NO_IND];
1543 card->qdio.no_in_queues = 1;
1544 card->info.is_multicast_different =
1545 known_devices[i][QETH_MULTICAST_IND];
1546 qeth_update_from_chp_desc(card);
1547 return 0;
1548 }
1549 i++;
1550 }
1551 card->info.type = QETH_CARD_TYPE_UNKNOWN;
1552 dev_err(&card->gdev->dev, "The adapter hardware is of an "
1553 "unknown type\n");
1554 return -ENOENT;
1555 }
1556
1557 static int qeth_clear_channel(struct qeth_channel *channel)
1558 {
1559 unsigned long flags;
1560 struct qeth_card *card;
1561 int rc;
1562
1563 card = CARD_FROM_CDEV(channel->ccwdev);
1564 QETH_CARD_TEXT(card, 3, "clearch");
1565 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1566 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1567 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1568
1569 if (rc)
1570 return rc;
1571 rc = wait_event_interruptible_timeout(card->wait_q,
1572 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1573 if (rc == -ERESTARTSYS)
1574 return rc;
1575 if (channel->state != CH_STATE_STOPPED)
1576 return -ETIME;
1577 channel->state = CH_STATE_DOWN;
1578 return 0;
1579 }
1580
1581 static int qeth_halt_channel(struct qeth_channel *channel)
1582 {
1583 unsigned long flags;
1584 struct qeth_card *card;
1585 int rc;
1586
1587 card = CARD_FROM_CDEV(channel->ccwdev);
1588 QETH_CARD_TEXT(card, 3, "haltch");
1589 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1590 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1591 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1592
1593 if (rc)
1594 return rc;
1595 rc = wait_event_interruptible_timeout(card->wait_q,
1596 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1597 if (rc == -ERESTARTSYS)
1598 return rc;
1599 if (channel->state != CH_STATE_HALTED)
1600 return -ETIME;
1601 return 0;
1602 }
1603
1604 static int qeth_halt_channels(struct qeth_card *card)
1605 {
1606 int rc1 = 0, rc2 = 0, rc3 = 0;
1607
1608 QETH_CARD_TEXT(card, 3, "haltchs");
1609 rc1 = qeth_halt_channel(&card->read);
1610 rc2 = qeth_halt_channel(&card->write);
1611 rc3 = qeth_halt_channel(&card->data);
1612 if (rc1)
1613 return rc1;
1614 if (rc2)
1615 return rc2;
1616 return rc3;
1617 }
1618
1619 static int qeth_clear_channels(struct qeth_card *card)
1620 {
1621 int rc1 = 0, rc2 = 0, rc3 = 0;
1622
1623 QETH_CARD_TEXT(card, 3, "clearchs");
1624 rc1 = qeth_clear_channel(&card->read);
1625 rc2 = qeth_clear_channel(&card->write);
1626 rc3 = qeth_clear_channel(&card->data);
1627 if (rc1)
1628 return rc1;
1629 if (rc2)
1630 return rc2;
1631 return rc3;
1632 }
1633
1634 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1635 {
1636 int rc = 0;
1637
1638 QETH_CARD_TEXT(card, 3, "clhacrd");
1639
1640 if (halt)
1641 rc = qeth_halt_channels(card);
1642 if (rc)
1643 return rc;
1644 return qeth_clear_channels(card);
1645 }
1646
1647 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1648 {
1649 int rc = 0;
1650
1651 QETH_CARD_TEXT(card, 3, "qdioclr");
1652 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1653 QETH_QDIO_CLEANING)) {
1654 case QETH_QDIO_ESTABLISHED:
1655 if (card->info.type == QETH_CARD_TYPE_IQD)
1656 rc = qdio_shutdown(CARD_DDEV(card),
1657 QDIO_FLAG_CLEANUP_USING_HALT);
1658 else
1659 rc = qdio_shutdown(CARD_DDEV(card),
1660 QDIO_FLAG_CLEANUP_USING_CLEAR);
1661 if (rc)
1662 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1663 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1664 break;
1665 case QETH_QDIO_CLEANING:
1666 return rc;
1667 default:
1668 break;
1669 }
1670 rc = qeth_clear_halt_card(card, use_halt);
1671 if (rc)
1672 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1673 card->state = CARD_STATE_DOWN;
1674 return rc;
1675 }
1676 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1677
1678 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1679 int *length)
1680 {
1681 struct ciw *ciw;
1682 char *rcd_buf;
1683 int ret;
1684 struct qeth_channel *channel = &card->data;
1685 unsigned long flags;
1686
1687 /*
1688 * scan for RCD command in extended SenseID data
1689 */
1690 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1691 if (!ciw || ciw->cmd == 0)
1692 return -EOPNOTSUPP;
1693 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1694 if (!rcd_buf)
1695 return -ENOMEM;
1696
1697 channel->ccw.cmd_code = ciw->cmd;
1698 channel->ccw.cda = (__u32) __pa(rcd_buf);
1699 channel->ccw.count = ciw->count;
1700 channel->ccw.flags = CCW_FLAG_SLI;
1701 channel->state = CH_STATE_RCD;
1702 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1703 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1704 QETH_RCD_PARM, LPM_ANYPATH, 0,
1705 QETH_RCD_TIMEOUT);
1706 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1707 if (!ret)
1708 wait_event(card->wait_q,
1709 (channel->state == CH_STATE_RCD_DONE ||
1710 channel->state == CH_STATE_DOWN));
1711 if (channel->state == CH_STATE_DOWN)
1712 ret = -EIO;
1713 else
1714 channel->state = CH_STATE_DOWN;
1715 if (ret) {
1716 kfree(rcd_buf);
1717 *buffer = NULL;
1718 *length = 0;
1719 } else {
1720 *length = ciw->count;
1721 *buffer = rcd_buf;
1722 }
1723 return ret;
1724 }
1725
1726 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1727 {
1728 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1729 card->info.chpid = prcd[30];
1730 card->info.unit_addr2 = prcd[31];
1731 card->info.cula = prcd[63];
1732 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1733 (prcd[0x11] == _ascebc['M']));
1734 }
1735
1736 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1737 {
1738 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1739
1740 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1741 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1742 card->info.blkt.time_total = 0;
1743 card->info.blkt.inter_packet = 0;
1744 card->info.blkt.inter_packet_jumbo = 0;
1745 } else {
1746 card->info.blkt.time_total = 250;
1747 card->info.blkt.inter_packet = 5;
1748 card->info.blkt.inter_packet_jumbo = 15;
1749 }
1750 }
1751
1752 static void qeth_init_tokens(struct qeth_card *card)
1753 {
1754 card->token.issuer_rm_w = 0x00010103UL;
1755 card->token.cm_filter_w = 0x00010108UL;
1756 card->token.cm_connection_w = 0x0001010aUL;
1757 card->token.ulp_filter_w = 0x0001010bUL;
1758 card->token.ulp_connection_w = 0x0001010dUL;
1759 }
1760
1761 static void qeth_init_func_level(struct qeth_card *card)
1762 {
1763 switch (card->info.type) {
1764 case QETH_CARD_TYPE_IQD:
1765 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1766 break;
1767 case QETH_CARD_TYPE_OSD:
1768 case QETH_CARD_TYPE_OSN:
1769 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1770 break;
1771 default:
1772 break;
1773 }
1774 }
1775
1776 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1777 void (*idx_reply_cb)(struct qeth_channel *,
1778 struct qeth_cmd_buffer *))
1779 {
1780 struct qeth_cmd_buffer *iob;
1781 unsigned long flags;
1782 int rc;
1783 struct qeth_card *card;
1784
1785 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1786 card = CARD_FROM_CDEV(channel->ccwdev);
1787 iob = qeth_get_buffer(channel);
1788 iob->callback = idx_reply_cb;
1789 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1790 channel->ccw.count = QETH_BUFSIZE;
1791 channel->ccw.cda = (__u32) __pa(iob->data);
1792
1793 wait_event(card->wait_q,
1794 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1795 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1796 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1797 rc = ccw_device_start(channel->ccwdev,
1798 &channel->ccw, (addr_t) iob, 0, 0);
1799 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1800
1801 if (rc) {
1802 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1803 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1804 atomic_set(&channel->irq_pending, 0);
1805 wake_up(&card->wait_q);
1806 return rc;
1807 }
1808 rc = wait_event_interruptible_timeout(card->wait_q,
1809 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1810 if (rc == -ERESTARTSYS)
1811 return rc;
1812 if (channel->state != CH_STATE_UP) {
1813 rc = -ETIME;
1814 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1815 qeth_clear_cmd_buffers(channel);
1816 } else
1817 rc = 0;
1818 return rc;
1819 }
1820
1821 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1822 void (*idx_reply_cb)(struct qeth_channel *,
1823 struct qeth_cmd_buffer *))
1824 {
1825 struct qeth_card *card;
1826 struct qeth_cmd_buffer *iob;
1827 unsigned long flags;
1828 __u16 temp;
1829 __u8 tmp;
1830 int rc;
1831 struct ccw_dev_id temp_devid;
1832
1833 card = CARD_FROM_CDEV(channel->ccwdev);
1834
1835 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1836
1837 iob = qeth_get_buffer(channel);
1838 iob->callback = idx_reply_cb;
1839 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1840 channel->ccw.count = IDX_ACTIVATE_SIZE;
1841 channel->ccw.cda = (__u32) __pa(iob->data);
1842 if (channel == &card->write) {
1843 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1844 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1845 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1846 card->seqno.trans_hdr++;
1847 } else {
1848 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1849 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1850 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1851 }
1852 tmp = ((__u8)card->info.portno) | 0x80;
1853 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1854 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1855 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1856 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1857 &card->info.func_level, sizeof(__u16));
1858 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1859 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1860 temp = (card->info.cula << 8) + card->info.unit_addr2;
1861 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1862
1863 wait_event(card->wait_q,
1864 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1865 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1866 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1867 rc = ccw_device_start(channel->ccwdev,
1868 &channel->ccw, (addr_t) iob, 0, 0);
1869 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1870
1871 if (rc) {
1872 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1873 rc);
1874 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1875 atomic_set(&channel->irq_pending, 0);
1876 wake_up(&card->wait_q);
1877 return rc;
1878 }
1879 rc = wait_event_interruptible_timeout(card->wait_q,
1880 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1881 if (rc == -ERESTARTSYS)
1882 return rc;
1883 if (channel->state != CH_STATE_ACTIVATING) {
1884 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1885 " failed to recover an error on the device\n");
1886 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1887 dev_name(&channel->ccwdev->dev));
1888 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1889 qeth_clear_cmd_buffers(channel);
1890 return -ETIME;
1891 }
1892 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1893 }
1894
1895 static int qeth_peer_func_level(int level)
1896 {
1897 if ((level & 0xff) == 8)
1898 return (level & 0xff) + 0x400;
1899 if (((level >> 8) & 3) == 1)
1900 return (level & 0xff) + 0x200;
1901 return level;
1902 }
1903
1904 static void qeth_idx_write_cb(struct qeth_channel *channel,
1905 struct qeth_cmd_buffer *iob)
1906 {
1907 struct qeth_card *card;
1908 __u16 temp;
1909
1910 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1911
1912 if (channel->state == CH_STATE_DOWN) {
1913 channel->state = CH_STATE_ACTIVATING;
1914 goto out;
1915 }
1916 card = CARD_FROM_CDEV(channel->ccwdev);
1917
1918 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1919 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1920 dev_err(&card->write.ccwdev->dev,
1921 "The adapter is used exclusively by another "
1922 "host\n");
1923 else
1924 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1925 " negative reply\n",
1926 dev_name(&card->write.ccwdev->dev));
1927 goto out;
1928 }
1929 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1930 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1931 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1932 "function level mismatch (sent: 0x%x, received: "
1933 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1934 card->info.func_level, temp);
1935 goto out;
1936 }
1937 channel->state = CH_STATE_UP;
1938 out:
1939 qeth_release_buffer(channel, iob);
1940 }
1941
1942 static void qeth_idx_read_cb(struct qeth_channel *channel,
1943 struct qeth_cmd_buffer *iob)
1944 {
1945 struct qeth_card *card;
1946 __u16 temp;
1947
1948 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1949 if (channel->state == CH_STATE_DOWN) {
1950 channel->state = CH_STATE_ACTIVATING;
1951 goto out;
1952 }
1953
1954 card = CARD_FROM_CDEV(channel->ccwdev);
1955 if (qeth_check_idx_response(card, iob->data))
1956 goto out;
1957
1958 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1959 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1960 case QETH_IDX_ACT_ERR_EXCL:
1961 dev_err(&card->write.ccwdev->dev,
1962 "The adapter is used exclusively by another "
1963 "host\n");
1964 break;
1965 case QETH_IDX_ACT_ERR_AUTH:
1966 case QETH_IDX_ACT_ERR_AUTH_USER:
1967 dev_err(&card->read.ccwdev->dev,
1968 "Setting the device online failed because of "
1969 "insufficient authorization\n");
1970 break;
1971 default:
1972 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1973 " negative reply\n",
1974 dev_name(&card->read.ccwdev->dev));
1975 }
1976 QETH_CARD_TEXT_(card, 2, "idxread%c",
1977 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1978 goto out;
1979 }
1980
1981 /**
1982 * * temporary fix for microcode bug
1983 * * to revert it,replace OR by AND
1984 * */
1985 if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1986 (card->info.type == QETH_CARD_TYPE_OSD))
1987 card->info.portname_required = 1;
1988
1989 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1990 if (temp != qeth_peer_func_level(card->info.func_level)) {
1991 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1992 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1993 dev_name(&card->read.ccwdev->dev),
1994 card->info.func_level, temp);
1995 goto out;
1996 }
1997 memcpy(&card->token.issuer_rm_r,
1998 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1999 QETH_MPC_TOKEN_LENGTH);
2000 memcpy(&card->info.mcl_level[0],
2001 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2002 channel->state = CH_STATE_UP;
2003 out:
2004 qeth_release_buffer(channel, iob);
2005 }
2006
2007 void qeth_prepare_control_data(struct qeth_card *card, int len,
2008 struct qeth_cmd_buffer *iob)
2009 {
2010 qeth_setup_ccw(&card->write, iob->data, len);
2011 iob->callback = qeth_release_buffer;
2012
2013 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2014 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2015 card->seqno.trans_hdr++;
2016 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2017 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2018 card->seqno.pdu_hdr++;
2019 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2020 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2021 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2022 }
2023 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2024
2025 int qeth_send_control_data(struct qeth_card *card, int len,
2026 struct qeth_cmd_buffer *iob,
2027 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2028 unsigned long),
2029 void *reply_param)
2030 {
2031 int rc;
2032 unsigned long flags;
2033 struct qeth_reply *reply = NULL;
2034 unsigned long timeout, event_timeout;
2035 struct qeth_ipa_cmd *cmd;
2036
2037 QETH_CARD_TEXT(card, 2, "sendctl");
2038
2039 if (card->read_or_write_problem) {
2040 qeth_release_buffer(iob->channel, iob);
2041 return -EIO;
2042 }
2043 reply = qeth_alloc_reply(card);
2044 if (!reply) {
2045 return -ENOMEM;
2046 }
2047 reply->callback = reply_cb;
2048 reply->param = reply_param;
2049 if (card->state == CARD_STATE_DOWN)
2050 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2051 else
2052 reply->seqno = card->seqno.ipa++;
2053 init_waitqueue_head(&reply->wait_q);
2054 spin_lock_irqsave(&card->lock, flags);
2055 list_add_tail(&reply->list, &card->cmd_waiter_list);
2056 spin_unlock_irqrestore(&card->lock, flags);
2057 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2058
2059 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2060 qeth_prepare_control_data(card, len, iob);
2061
2062 if (IS_IPA(iob->data))
2063 event_timeout = QETH_IPA_TIMEOUT;
2064 else
2065 event_timeout = QETH_TIMEOUT;
2066 timeout = jiffies + event_timeout;
2067
2068 QETH_CARD_TEXT(card, 6, "noirqpnd");
2069 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2070 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2071 (addr_t) iob, 0, 0);
2072 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2073 if (rc) {
2074 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2075 "ccw_device_start rc = %i\n",
2076 dev_name(&card->write.ccwdev->dev), rc);
2077 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2078 spin_lock_irqsave(&card->lock, flags);
2079 list_del_init(&reply->list);
2080 qeth_put_reply(reply);
2081 spin_unlock_irqrestore(&card->lock, flags);
2082 qeth_release_buffer(iob->channel, iob);
2083 atomic_set(&card->write.irq_pending, 0);
2084 wake_up(&card->wait_q);
2085 return rc;
2086 }
2087
2088 /* we have only one long running ipassist, since we can ensure
2089 process context of this command we can sleep */
2090 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2091 if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2092 (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2093 if (!wait_event_timeout(reply->wait_q,
2094 atomic_read(&reply->received), event_timeout))
2095 goto time_err;
2096 } else {
2097 while (!atomic_read(&reply->received)) {
2098 if (time_after(jiffies, timeout))
2099 goto time_err;
2100 cpu_relax();
2101 }
2102 }
2103
2104 if (reply->rc == -EIO)
2105 goto error;
2106 rc = reply->rc;
2107 qeth_put_reply(reply);
2108 return rc;
2109
2110 time_err:
2111 reply->rc = -ETIME;
2112 spin_lock_irqsave(&reply->card->lock, flags);
2113 list_del_init(&reply->list);
2114 spin_unlock_irqrestore(&reply->card->lock, flags);
2115 atomic_inc(&reply->received);
2116 error:
2117 atomic_set(&card->write.irq_pending, 0);
2118 qeth_release_buffer(iob->channel, iob);
2119 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2120 rc = reply->rc;
2121 qeth_put_reply(reply);
2122 return rc;
2123 }
2124 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2125
2126 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2127 unsigned long data)
2128 {
2129 struct qeth_cmd_buffer *iob;
2130
2131 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2132
2133 iob = (struct qeth_cmd_buffer *) data;
2134 memcpy(&card->token.cm_filter_r,
2135 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2136 QETH_MPC_TOKEN_LENGTH);
2137 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2138 return 0;
2139 }
2140
2141 static int qeth_cm_enable(struct qeth_card *card)
2142 {
2143 int rc;
2144 struct qeth_cmd_buffer *iob;
2145
2146 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2147
2148 iob = qeth_wait_for_buffer(&card->write);
2149 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2150 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2151 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2152 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2153 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2154
2155 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2156 qeth_cm_enable_cb, NULL);
2157 return rc;
2158 }
2159
2160 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2161 unsigned long data)
2162 {
2163
2164 struct qeth_cmd_buffer *iob;
2165
2166 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2167
2168 iob = (struct qeth_cmd_buffer *) data;
2169 memcpy(&card->token.cm_connection_r,
2170 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2171 QETH_MPC_TOKEN_LENGTH);
2172 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2173 return 0;
2174 }
2175
2176 static int qeth_cm_setup(struct qeth_card *card)
2177 {
2178 int rc;
2179 struct qeth_cmd_buffer *iob;
2180
2181 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2182
2183 iob = qeth_wait_for_buffer(&card->write);
2184 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2185 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2186 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2187 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2188 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2189 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2190 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2191 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2192 qeth_cm_setup_cb, NULL);
2193 return rc;
2194
2195 }
2196
2197 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2198 {
2199 switch (card->info.type) {
2200 case QETH_CARD_TYPE_UNKNOWN:
2201 return 1500;
2202 case QETH_CARD_TYPE_IQD:
2203 return card->info.max_mtu;
2204 case QETH_CARD_TYPE_OSD:
2205 switch (card->info.link_type) {
2206 case QETH_LINK_TYPE_HSTR:
2207 case QETH_LINK_TYPE_LANE_TR:
2208 return 2000;
2209 default:
2210 return card->options.layer2 ? 1500 : 1492;
2211 }
2212 case QETH_CARD_TYPE_OSM:
2213 case QETH_CARD_TYPE_OSX:
2214 return card->options.layer2 ? 1500 : 1492;
2215 default:
2216 return 1500;
2217 }
2218 }
2219
2220 static inline int qeth_get_mtu_outof_framesize(int framesize)
2221 {
2222 switch (framesize) {
2223 case 0x4000:
2224 return 8192;
2225 case 0x6000:
2226 return 16384;
2227 case 0xa000:
2228 return 32768;
2229 case 0xffff:
2230 return 57344;
2231 default:
2232 return 0;
2233 }
2234 }
2235
2236 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2237 {
2238 switch (card->info.type) {
2239 case QETH_CARD_TYPE_OSD:
2240 case QETH_CARD_TYPE_OSM:
2241 case QETH_CARD_TYPE_OSX:
2242 case QETH_CARD_TYPE_IQD:
2243 return ((mtu >= 576) &&
2244 (mtu <= card->info.max_mtu));
2245 case QETH_CARD_TYPE_OSN:
2246 case QETH_CARD_TYPE_UNKNOWN:
2247 default:
2248 return 1;
2249 }
2250 }
2251
2252 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2253 unsigned long data)
2254 {
2255
2256 __u16 mtu, framesize;
2257 __u16 len;
2258 __u8 link_type;
2259 struct qeth_cmd_buffer *iob;
2260
2261 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2262
2263 iob = (struct qeth_cmd_buffer *) data;
2264 memcpy(&card->token.ulp_filter_r,
2265 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2266 QETH_MPC_TOKEN_LENGTH);
2267 if (card->info.type == QETH_CARD_TYPE_IQD) {
2268 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2269 mtu = qeth_get_mtu_outof_framesize(framesize);
2270 if (!mtu) {
2271 iob->rc = -EINVAL;
2272 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2273 return 0;
2274 }
2275 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2276 /* frame size has changed */
2277 if (card->dev &&
2278 ((card->dev->mtu == card->info.initial_mtu) ||
2279 (card->dev->mtu > mtu)))
2280 card->dev->mtu = mtu;
2281 qeth_free_qdio_buffers(card);
2282 }
2283 card->info.initial_mtu = mtu;
2284 card->info.max_mtu = mtu;
2285 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2286 } else {
2287 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2288 iob->data);
2289 card->info.initial_mtu = min(card->info.max_mtu,
2290 qeth_get_initial_mtu_for_card(card));
2291 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2292 }
2293
2294 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2295 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2296 memcpy(&link_type,
2297 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2298 card->info.link_type = link_type;
2299 } else
2300 card->info.link_type = 0;
2301 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2302 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2303 return 0;
2304 }
2305
2306 static int qeth_ulp_enable(struct qeth_card *card)
2307 {
2308 int rc;
2309 char prot_type;
2310 struct qeth_cmd_buffer *iob;
2311
2312 /*FIXME: trace view callbacks*/
2313 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2314
2315 iob = qeth_wait_for_buffer(&card->write);
2316 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2317
2318 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2319 (__u8) card->info.portno;
2320 if (card->options.layer2)
2321 if (card->info.type == QETH_CARD_TYPE_OSN)
2322 prot_type = QETH_PROT_OSN2;
2323 else
2324 prot_type = QETH_PROT_LAYER2;
2325 else
2326 prot_type = QETH_PROT_TCPIP;
2327
2328 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2329 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2330 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2331 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2332 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2333 memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2334 card->info.portname, 9);
2335 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2336 qeth_ulp_enable_cb, NULL);
2337 return rc;
2338
2339 }
2340
2341 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2342 unsigned long data)
2343 {
2344 struct qeth_cmd_buffer *iob;
2345
2346 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2347
2348 iob = (struct qeth_cmd_buffer *) data;
2349 memcpy(&card->token.ulp_connection_r,
2350 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2351 QETH_MPC_TOKEN_LENGTH);
2352 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2353 3)) {
2354 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2355 dev_err(&card->gdev->dev, "A connection could not be "
2356 "established because of an OLM limit\n");
2357 iob->rc = -EMLINK;
2358 }
2359 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2360 return 0;
2361 }
2362
2363 static int qeth_ulp_setup(struct qeth_card *card)
2364 {
2365 int rc;
2366 __u16 temp;
2367 struct qeth_cmd_buffer *iob;
2368 struct ccw_dev_id dev_id;
2369
2370 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2371
2372 iob = qeth_wait_for_buffer(&card->write);
2373 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2374
2375 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2376 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2377 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2378 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2379 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2380 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2381
2382 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2383 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2384 temp = (card->info.cula << 8) + card->info.unit_addr2;
2385 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2386 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2387 qeth_ulp_setup_cb, NULL);
2388 return rc;
2389 }
2390
2391 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2392 {
2393 int rc;
2394 struct qeth_qdio_out_buffer *newbuf;
2395
2396 rc = 0;
2397 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2398 if (!newbuf) {
2399 rc = -ENOMEM;
2400 goto out;
2401 }
2402 newbuf->buffer = &q->qdio_bufs[bidx];
2403 skb_queue_head_init(&newbuf->skb_list);
2404 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2405 newbuf->q = q;
2406 newbuf->aob = NULL;
2407 newbuf->next_pending = q->bufs[bidx];
2408 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2409 q->bufs[bidx] = newbuf;
2410 if (q->bufstates) {
2411 q->bufstates[bidx].user = newbuf;
2412 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2413 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2414 QETH_CARD_TEXT_(q->card, 2, "%lx",
2415 (long) newbuf->next_pending);
2416 }
2417 out:
2418 return rc;
2419 }
2420
2421
2422 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2423 {
2424 int i, j;
2425
2426 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2427
2428 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2429 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2430 return 0;
2431
2432 card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2433 GFP_KERNEL);
2434 if (!card->qdio.in_q)
2435 goto out_nomem;
2436 QETH_DBF_TEXT(SETUP, 2, "inq");
2437 QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2438 memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2439 /* give inbound qeth_qdio_buffers their qdio_buffers */
2440 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2441 card->qdio.in_q->bufs[i].buffer =
2442 &card->qdio.in_q->qdio_bufs[i];
2443 card->qdio.in_q->bufs[i].rx_skb = NULL;
2444 }
2445 /* inbound buffer pool */
2446 if (qeth_alloc_buffer_pool(card))
2447 goto out_freeinq;
2448
2449 /* outbound */
2450 card->qdio.out_qs =
2451 kzalloc(card->qdio.no_out_queues *
2452 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2453 if (!card->qdio.out_qs)
2454 goto out_freepool;
2455 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2456 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2457 GFP_KERNEL);
2458 if (!card->qdio.out_qs[i])
2459 goto out_freeoutq;
2460 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2461 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2462 card->qdio.out_qs[i]->queue_no = i;
2463 /* give outbound qeth_qdio_buffers their qdio_buffers */
2464 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2465 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2466 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2467 goto out_freeoutqbufs;
2468 }
2469 }
2470
2471 /* completion */
2472 if (qeth_alloc_cq(card))
2473 goto out_freeoutq;
2474
2475 return 0;
2476
2477 out_freeoutqbufs:
2478 while (j > 0) {
2479 --j;
2480 kmem_cache_free(qeth_qdio_outbuf_cache,
2481 card->qdio.out_qs[i]->bufs[j]);
2482 card->qdio.out_qs[i]->bufs[j] = NULL;
2483 }
2484 out_freeoutq:
2485 while (i > 0) {
2486 kfree(card->qdio.out_qs[--i]);
2487 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2488 }
2489 kfree(card->qdio.out_qs);
2490 card->qdio.out_qs = NULL;
2491 out_freepool:
2492 qeth_free_buffer_pool(card);
2493 out_freeinq:
2494 kfree(card->qdio.in_q);
2495 card->qdio.in_q = NULL;
2496 out_nomem:
2497 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2498 return -ENOMEM;
2499 }
2500
2501 static void qeth_create_qib_param_field(struct qeth_card *card,
2502 char *param_field)
2503 {
2504
2505 param_field[0] = _ascebc['P'];
2506 param_field[1] = _ascebc['C'];
2507 param_field[2] = _ascebc['I'];
2508 param_field[3] = _ascebc['T'];
2509 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2510 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2511 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2512 }
2513
2514 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2515 char *param_field)
2516 {
2517 param_field[16] = _ascebc['B'];
2518 param_field[17] = _ascebc['L'];
2519 param_field[18] = _ascebc['K'];
2520 param_field[19] = _ascebc['T'];
2521 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2522 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2523 *((unsigned int *) (&param_field[28])) =
2524 card->info.blkt.inter_packet_jumbo;
2525 }
2526
2527 static int qeth_qdio_activate(struct qeth_card *card)
2528 {
2529 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2530 return qdio_activate(CARD_DDEV(card));
2531 }
2532
2533 static int qeth_dm_act(struct qeth_card *card)
2534 {
2535 int rc;
2536 struct qeth_cmd_buffer *iob;
2537
2538 QETH_DBF_TEXT(SETUP, 2, "dmact");
2539
2540 iob = qeth_wait_for_buffer(&card->write);
2541 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2542
2543 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2544 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2545 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2546 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2547 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2548 return rc;
2549 }
2550
2551 static int qeth_mpc_initialize(struct qeth_card *card)
2552 {
2553 int rc;
2554
2555 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2556
2557 rc = qeth_issue_next_read(card);
2558 if (rc) {
2559 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2560 return rc;
2561 }
2562 rc = qeth_cm_enable(card);
2563 if (rc) {
2564 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2565 goto out_qdio;
2566 }
2567 rc = qeth_cm_setup(card);
2568 if (rc) {
2569 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2570 goto out_qdio;
2571 }
2572 rc = qeth_ulp_enable(card);
2573 if (rc) {
2574 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2575 goto out_qdio;
2576 }
2577 rc = qeth_ulp_setup(card);
2578 if (rc) {
2579 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2580 goto out_qdio;
2581 }
2582 rc = qeth_alloc_qdio_buffers(card);
2583 if (rc) {
2584 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2585 goto out_qdio;
2586 }
2587 rc = qeth_qdio_establish(card);
2588 if (rc) {
2589 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2590 qeth_free_qdio_buffers(card);
2591 goto out_qdio;
2592 }
2593 rc = qeth_qdio_activate(card);
2594 if (rc) {
2595 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2596 goto out_qdio;
2597 }
2598 rc = qeth_dm_act(card);
2599 if (rc) {
2600 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2601 goto out_qdio;
2602 }
2603
2604 return 0;
2605 out_qdio:
2606 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2607 qdio_free(CARD_DDEV(card));
2608 return rc;
2609 }
2610
2611 static void qeth_print_status_with_portname(struct qeth_card *card)
2612 {
2613 char dbf_text[15];
2614 int i;
2615
2616 sprintf(dbf_text, "%s", card->info.portname + 1);
2617 for (i = 0; i < 8; i++)
2618 dbf_text[i] =
2619 (char) _ebcasc[(__u8) dbf_text[i]];
2620 dbf_text[8] = 0;
2621 dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2622 "with link type %s (portname: %s)\n",
2623 qeth_get_cardname(card),
2624 (card->info.mcl_level[0]) ? " (level: " : "",
2625 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2626 (card->info.mcl_level[0]) ? ")" : "",
2627 qeth_get_cardname_short(card),
2628 dbf_text);
2629
2630 }
2631
2632 static void qeth_print_status_no_portname(struct qeth_card *card)
2633 {
2634 if (card->info.portname[0])
2635 dev_info(&card->gdev->dev, "Device is a%s "
2636 "card%s%s%s\nwith link type %s "
2637 "(no portname needed by interface).\n",
2638 qeth_get_cardname(card),
2639 (card->info.mcl_level[0]) ? " (level: " : "",
2640 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2641 (card->info.mcl_level[0]) ? ")" : "",
2642 qeth_get_cardname_short(card));
2643 else
2644 dev_info(&card->gdev->dev, "Device is a%s "
2645 "card%s%s%s\nwith link type %s.\n",
2646 qeth_get_cardname(card),
2647 (card->info.mcl_level[0]) ? " (level: " : "",
2648 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2649 (card->info.mcl_level[0]) ? ")" : "",
2650 qeth_get_cardname_short(card));
2651 }
2652
2653 void qeth_print_status_message(struct qeth_card *card)
2654 {
2655 switch (card->info.type) {
2656 case QETH_CARD_TYPE_OSD:
2657 case QETH_CARD_TYPE_OSM:
2658 case QETH_CARD_TYPE_OSX:
2659 /* VM will use a non-zero first character
2660 * to indicate a HiperSockets like reporting
2661 * of the level OSA sets the first character to zero
2662 * */
2663 if (!card->info.mcl_level[0]) {
2664 sprintf(card->info.mcl_level, "%02x%02x",
2665 card->info.mcl_level[2],
2666 card->info.mcl_level[3]);
2667
2668 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2669 break;
2670 }
2671 /* fallthrough */
2672 case QETH_CARD_TYPE_IQD:
2673 if ((card->info.guestlan) ||
2674 (card->info.mcl_level[0] & 0x80)) {
2675 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2676 card->info.mcl_level[0]];
2677 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2678 card->info.mcl_level[1]];
2679 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2680 card->info.mcl_level[2]];
2681 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2682 card->info.mcl_level[3]];
2683 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2684 }
2685 break;
2686 default:
2687 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2688 }
2689 if (card->info.portname_required)
2690 qeth_print_status_with_portname(card);
2691 else
2692 qeth_print_status_no_portname(card);
2693 }
2694 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2695
2696 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2697 {
2698 struct qeth_buffer_pool_entry *entry;
2699
2700 QETH_CARD_TEXT(card, 5, "inwrklst");
2701
2702 list_for_each_entry(entry,
2703 &card->qdio.init_pool.entry_list, init_list) {
2704 qeth_put_buffer_pool_entry(card, entry);
2705 }
2706 }
2707
2708 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2709 struct qeth_card *card)
2710 {
2711 struct list_head *plh;
2712 struct qeth_buffer_pool_entry *entry;
2713 int i, free;
2714 struct page *page;
2715
2716 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2717 return NULL;
2718
2719 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2720 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2721 free = 1;
2722 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2723 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2724 free = 0;
2725 break;
2726 }
2727 }
2728 if (free) {
2729 list_del_init(&entry->list);
2730 return entry;
2731 }
2732 }
2733
2734 /* no free buffer in pool so take first one and swap pages */
2735 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2736 struct qeth_buffer_pool_entry, list);
2737 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2738 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2739 page = alloc_page(GFP_ATOMIC);
2740 if (!page) {
2741 return NULL;
2742 } else {
2743 free_page((unsigned long)entry->elements[i]);
2744 entry->elements[i] = page_address(page);
2745 if (card->options.performance_stats)
2746 card->perf_stats.sg_alloc_page_rx++;
2747 }
2748 }
2749 }
2750 list_del_init(&entry->list);
2751 return entry;
2752 }
2753
2754 static int qeth_init_input_buffer(struct qeth_card *card,
2755 struct qeth_qdio_buffer *buf)
2756 {
2757 struct qeth_buffer_pool_entry *pool_entry;
2758 int i;
2759
2760 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2761 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2762 if (!buf->rx_skb)
2763 return 1;
2764 }
2765
2766 pool_entry = qeth_find_free_buffer_pool_entry(card);
2767 if (!pool_entry)
2768 return 1;
2769
2770 /*
2771 * since the buffer is accessed only from the input_tasklet
2772 * there shouldn't be a need to synchronize; also, since we use
2773 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2774 * buffers
2775 */
2776
2777 buf->pool_entry = pool_entry;
2778 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2779 buf->buffer->element[i].length = PAGE_SIZE;
2780 buf->buffer->element[i].addr = pool_entry->elements[i];
2781 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2782 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2783 else
2784 buf->buffer->element[i].eflags = 0;
2785 buf->buffer->element[i].sflags = 0;
2786 }
2787 return 0;
2788 }
2789
2790 int qeth_init_qdio_queues(struct qeth_card *card)
2791 {
2792 int i, j;
2793 int rc;
2794
2795 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2796
2797 /* inbound queue */
2798 memset(card->qdio.in_q->qdio_bufs, 0,
2799 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2800 qeth_initialize_working_pool_list(card);
2801 /*give only as many buffers to hardware as we have buffer pool entries*/
2802 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2803 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2804 card->qdio.in_q->next_buf_to_init =
2805 card->qdio.in_buf_pool.buf_count - 1;
2806 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2807 card->qdio.in_buf_pool.buf_count - 1);
2808 if (rc) {
2809 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2810 return rc;
2811 }
2812
2813 /* completion */
2814 rc = qeth_cq_init(card);
2815 if (rc) {
2816 return rc;
2817 }
2818
2819 /* outbound queue */
2820 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2821 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2822 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2823 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2824 qeth_clear_output_buffer(card->qdio.out_qs[i],
2825 card->qdio.out_qs[i]->bufs[j],
2826 QETH_QDIO_BUF_EMPTY);
2827 }
2828 card->qdio.out_qs[i]->card = card;
2829 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2830 card->qdio.out_qs[i]->do_pack = 0;
2831 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2832 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2833 atomic_set(&card->qdio.out_qs[i]->state,
2834 QETH_OUT_Q_UNLOCKED);
2835 }
2836 return 0;
2837 }
2838 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2839
2840 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2841 {
2842 switch (link_type) {
2843 case QETH_LINK_TYPE_HSTR:
2844 return 2;
2845 default:
2846 return 1;
2847 }
2848 }
2849
2850 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2851 struct qeth_ipa_cmd *cmd, __u8 command,
2852 enum qeth_prot_versions prot)
2853 {
2854 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2855 cmd->hdr.command = command;
2856 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2857 cmd->hdr.seqno = card->seqno.ipa;
2858 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2859 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2860 if (card->options.layer2)
2861 cmd->hdr.prim_version_no = 2;
2862 else
2863 cmd->hdr.prim_version_no = 1;
2864 cmd->hdr.param_count = 1;
2865 cmd->hdr.prot_version = prot;
2866 cmd->hdr.ipa_supported = 0;
2867 cmd->hdr.ipa_enabled = 0;
2868 }
2869
2870 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2871 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2872 {
2873 struct qeth_cmd_buffer *iob;
2874 struct qeth_ipa_cmd *cmd;
2875
2876 iob = qeth_wait_for_buffer(&card->write);
2877 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2878 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2879
2880 return iob;
2881 }
2882 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2883
2884 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2885 char prot_type)
2886 {
2887 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2888 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2889 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2890 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2891 }
2892 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2893
2894 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2895 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2896 unsigned long),
2897 void *reply_param)
2898 {
2899 int rc;
2900 char prot_type;
2901
2902 QETH_CARD_TEXT(card, 4, "sendipa");
2903
2904 if (card->options.layer2)
2905 if (card->info.type == QETH_CARD_TYPE_OSN)
2906 prot_type = QETH_PROT_OSN2;
2907 else
2908 prot_type = QETH_PROT_LAYER2;
2909 else
2910 prot_type = QETH_PROT_TCPIP;
2911 qeth_prepare_ipa_cmd(card, iob, prot_type);
2912 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2913 iob, reply_cb, reply_param);
2914 if (rc == -ETIME) {
2915 qeth_clear_ipacmd_list(card);
2916 qeth_schedule_recovery(card);
2917 }
2918 return rc;
2919 }
2920 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2921
2922 int qeth_send_startlan(struct qeth_card *card)
2923 {
2924 int rc;
2925 struct qeth_cmd_buffer *iob;
2926
2927 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2928
2929 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2930 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2931 return rc;
2932 }
2933 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2934
2935 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2936 struct qeth_reply *reply, unsigned long data)
2937 {
2938 struct qeth_ipa_cmd *cmd;
2939
2940 QETH_CARD_TEXT(card, 4, "defadpcb");
2941
2942 cmd = (struct qeth_ipa_cmd *) data;
2943 if (cmd->hdr.return_code == 0)
2944 cmd->hdr.return_code =
2945 cmd->data.setadapterparms.hdr.return_code;
2946 return 0;
2947 }
2948
2949 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2950 struct qeth_reply *reply, unsigned long data)
2951 {
2952 struct qeth_ipa_cmd *cmd;
2953
2954 QETH_CARD_TEXT(card, 3, "quyadpcb");
2955
2956 cmd = (struct qeth_ipa_cmd *) data;
2957 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2958 card->info.link_type =
2959 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2960 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2961 }
2962 card->options.adp.supported_funcs =
2963 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2964 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2965 }
2966
2967 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2968 __u32 command, __u32 cmdlen)
2969 {
2970 struct qeth_cmd_buffer *iob;
2971 struct qeth_ipa_cmd *cmd;
2972
2973 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2974 QETH_PROT_IPV4);
2975 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2976 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2977 cmd->data.setadapterparms.hdr.command_code = command;
2978 cmd->data.setadapterparms.hdr.used_total = 1;
2979 cmd->data.setadapterparms.hdr.seq_no = 1;
2980
2981 return iob;
2982 }
2983
2984 int qeth_query_setadapterparms(struct qeth_card *card)
2985 {
2986 int rc;
2987 struct qeth_cmd_buffer *iob;
2988
2989 QETH_CARD_TEXT(card, 3, "queryadp");
2990 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2991 sizeof(struct qeth_ipacmd_setadpparms));
2992 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2993 return rc;
2994 }
2995 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2996
2997 static int qeth_query_ipassists_cb(struct qeth_card *card,
2998 struct qeth_reply *reply, unsigned long data)
2999 {
3000 struct qeth_ipa_cmd *cmd;
3001
3002 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3003
3004 cmd = (struct qeth_ipa_cmd *) data;
3005
3006 switch (cmd->hdr.return_code) {
3007 case IPA_RC_NOTSUPP:
3008 case IPA_RC_L2_UNSUPPORTED_CMD:
3009 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3010 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3011 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3012 return -0;
3013 default:
3014 if (cmd->hdr.return_code) {
3015 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3016 "rc=%d\n",
3017 dev_name(&card->gdev->dev),
3018 cmd->hdr.return_code);
3019 return 0;
3020 }
3021 }
3022
3023 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3024 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3025 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3026 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3027 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3028 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3029 } else
3030 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3031 "\n", dev_name(&card->gdev->dev));
3032 return 0;
3033 }
3034
3035 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3036 {
3037 int rc;
3038 struct qeth_cmd_buffer *iob;
3039
3040 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3041 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3042 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3043 return rc;
3044 }
3045 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3046
3047 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3048 struct qeth_reply *reply, unsigned long data)
3049 {
3050 struct qeth_ipa_cmd *cmd;
3051 __u16 rc;
3052
3053 cmd = (struct qeth_ipa_cmd *)data;
3054 rc = cmd->hdr.return_code;
3055 if (rc)
3056 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3057 else
3058 card->info.diagass_support = cmd->data.diagass.ext;
3059 return 0;
3060 }
3061
3062 static int qeth_query_setdiagass(struct qeth_card *card)
3063 {
3064 struct qeth_cmd_buffer *iob;
3065 struct qeth_ipa_cmd *cmd;
3066
3067 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3068 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3069 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3070 cmd->data.diagass.subcmd_len = 16;
3071 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3072 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3073 }
3074
3075 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3076 {
3077 unsigned long info = get_zeroed_page(GFP_KERNEL);
3078 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3079 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3080 struct ccw_dev_id ccwid;
3081 int level;
3082
3083 tid->chpid = card->info.chpid;
3084 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3085 tid->ssid = ccwid.ssid;
3086 tid->devno = ccwid.devno;
3087 if (!info)
3088 return;
3089 level = stsi(NULL, 0, 0, 0);
3090 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3091 tid->lparnr = info222->lpar_number;
3092 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3093 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3094 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3095 }
3096 free_page(info);
3097 return;
3098 }
3099
3100 static int qeth_hw_trap_cb(struct qeth_card *card,
3101 struct qeth_reply *reply, unsigned long data)
3102 {
3103 struct qeth_ipa_cmd *cmd;
3104 __u16 rc;
3105
3106 cmd = (struct qeth_ipa_cmd *)data;
3107 rc = cmd->hdr.return_code;
3108 if (rc)
3109 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3110 return 0;
3111 }
3112
3113 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3114 {
3115 struct qeth_cmd_buffer *iob;
3116 struct qeth_ipa_cmd *cmd;
3117
3118 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3119 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3120 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3121 cmd->data.diagass.subcmd_len = 80;
3122 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3123 cmd->data.diagass.type = 1;
3124 cmd->data.diagass.action = action;
3125 switch (action) {
3126 case QETH_DIAGS_TRAP_ARM:
3127 cmd->data.diagass.options = 0x0003;
3128 cmd->data.diagass.ext = 0x00010000 +
3129 sizeof(struct qeth_trap_id);
3130 qeth_get_trap_id(card,
3131 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3132 break;
3133 case QETH_DIAGS_TRAP_DISARM:
3134 cmd->data.diagass.options = 0x0001;
3135 break;
3136 case QETH_DIAGS_TRAP_CAPTURE:
3137 break;
3138 }
3139 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3140 }
3141 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3142
3143 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3144 unsigned int qdio_error, const char *dbftext)
3145 {
3146 if (qdio_error) {
3147 QETH_CARD_TEXT(card, 2, dbftext);
3148 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3149 buf->element[15].sflags);
3150 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3151 buf->element[14].sflags);
3152 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3153 if ((buf->element[15].sflags) == 0x12) {
3154 card->stats.rx_dropped++;
3155 return 0;
3156 } else
3157 return 1;
3158 }
3159 return 0;
3160 }
3161 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3162
3163 void qeth_buffer_reclaim_work(struct work_struct *work)
3164 {
3165 struct qeth_card *card = container_of(work, struct qeth_card,
3166 buffer_reclaim_work.work);
3167
3168 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3169 qeth_queue_input_buffer(card, card->reclaim_index);
3170 }
3171
3172 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3173 {
3174 struct qeth_qdio_q *queue = card->qdio.in_q;
3175 struct list_head *lh;
3176 int count;
3177 int i;
3178 int rc;
3179 int newcount = 0;
3180
3181 count = (index < queue->next_buf_to_init)?
3182 card->qdio.in_buf_pool.buf_count -
3183 (queue->next_buf_to_init - index) :
3184 card->qdio.in_buf_pool.buf_count -
3185 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3186 /* only requeue at a certain threshold to avoid SIGAs */
3187 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3188 for (i = queue->next_buf_to_init;
3189 i < queue->next_buf_to_init + count; ++i) {
3190 if (qeth_init_input_buffer(card,
3191 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3192 break;
3193 } else {
3194 newcount++;
3195 }
3196 }
3197
3198 if (newcount < count) {
3199 /* we are in memory shortage so we switch back to
3200 traditional skb allocation and drop packages */
3201 atomic_set(&card->force_alloc_skb, 3);
3202 count = newcount;
3203 } else {
3204 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3205 }
3206
3207 if (!count) {
3208 i = 0;
3209 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3210 i++;
3211 if (i == card->qdio.in_buf_pool.buf_count) {
3212 QETH_CARD_TEXT(card, 2, "qsarbw");
3213 card->reclaim_index = index;
3214 schedule_delayed_work(
3215 &card->buffer_reclaim_work,
3216 QETH_RECLAIM_WORK_TIME);
3217 }
3218 return;
3219 }
3220
3221 /*
3222 * according to old code it should be avoided to requeue all
3223 * 128 buffers in order to benefit from PCI avoidance.
3224 * this function keeps at least one buffer (the buffer at
3225 * 'index') un-requeued -> this buffer is the first buffer that
3226 * will be requeued the next time
3227 */
3228 if (card->options.performance_stats) {
3229 card->perf_stats.inbound_do_qdio_cnt++;
3230 card->perf_stats.inbound_do_qdio_start_time =
3231 qeth_get_micros();
3232 }
3233 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3234 queue->next_buf_to_init, count);
3235 if (card->options.performance_stats)
3236 card->perf_stats.inbound_do_qdio_time +=
3237 qeth_get_micros() -
3238 card->perf_stats.inbound_do_qdio_start_time;
3239 if (rc) {
3240 QETH_CARD_TEXT(card, 2, "qinberr");
3241 }
3242 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3243 QDIO_MAX_BUFFERS_PER_Q;
3244 }
3245 }
3246 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3247
3248 static int qeth_handle_send_error(struct qeth_card *card,
3249 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3250 {
3251 int sbalf15 = buffer->buffer->element[15].sflags;
3252
3253 QETH_CARD_TEXT(card, 6, "hdsnderr");
3254 if (card->info.type == QETH_CARD_TYPE_IQD) {
3255 if (sbalf15 == 0) {
3256 qdio_err = 0;
3257 } else {
3258 qdio_err = 1;
3259 }
3260 }
3261 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3262
3263 if (!qdio_err)
3264 return QETH_SEND_ERROR_NONE;
3265
3266 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3267 return QETH_SEND_ERROR_RETRY;
3268
3269 QETH_CARD_TEXT(card, 1, "lnkfail");
3270 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3271 (u16)qdio_err, (u8)sbalf15);
3272 return QETH_SEND_ERROR_LINK_FAILURE;
3273 }
3274
3275 /*
3276 * Switched to packing state if the number of used buffers on a queue
3277 * reaches a certain limit.
3278 */
3279 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3280 {
3281 if (!queue->do_pack) {
3282 if (atomic_read(&queue->used_buffers)
3283 >= QETH_HIGH_WATERMARK_PACK){
3284 /* switch non-PACKING -> PACKING */
3285 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3286 if (queue->card->options.performance_stats)
3287 queue->card->perf_stats.sc_dp_p++;
3288 queue->do_pack = 1;
3289 }
3290 }
3291 }
3292
3293 /*
3294 * Switches from packing to non-packing mode. If there is a packing
3295 * buffer on the queue this buffer will be prepared to be flushed.
3296 * In that case 1 is returned to inform the caller. If no buffer
3297 * has to be flushed, zero is returned.
3298 */
3299 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3300 {
3301 struct qeth_qdio_out_buffer *buffer;
3302 int flush_count = 0;
3303
3304 if (queue->do_pack) {
3305 if (atomic_read(&queue->used_buffers)
3306 <= QETH_LOW_WATERMARK_PACK) {
3307 /* switch PACKING -> non-PACKING */
3308 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3309 if (queue->card->options.performance_stats)
3310 queue->card->perf_stats.sc_p_dp++;
3311 queue->do_pack = 0;
3312 /* flush packing buffers */
3313 buffer = queue->bufs[queue->next_buf_to_fill];
3314 if ((atomic_read(&buffer->state) ==
3315 QETH_QDIO_BUF_EMPTY) &&
3316 (buffer->next_element_to_fill > 0)) {
3317 atomic_set(&buffer->state,
3318 QETH_QDIO_BUF_PRIMED);
3319 flush_count++;
3320 queue->next_buf_to_fill =
3321 (queue->next_buf_to_fill + 1) %
3322 QDIO_MAX_BUFFERS_PER_Q;
3323 }
3324 }
3325 }
3326 return flush_count;
3327 }
3328
3329
3330 /*
3331 * Called to flush a packing buffer if no more pci flags are on the queue.
3332 * Checks if there is a packing buffer and prepares it to be flushed.
3333 * In that case returns 1, otherwise zero.
3334 */
3335 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3336 {
3337 struct qeth_qdio_out_buffer *buffer;
3338
3339 buffer = queue->bufs[queue->next_buf_to_fill];
3340 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3341 (buffer->next_element_to_fill > 0)) {
3342 /* it's a packing buffer */
3343 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3344 queue->next_buf_to_fill =
3345 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3346 return 1;
3347 }
3348 return 0;
3349 }
3350
3351 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3352 int count)
3353 {
3354 struct qeth_qdio_out_buffer *buf;
3355 int rc;
3356 int i;
3357 unsigned int qdio_flags;
3358
3359 for (i = index; i < index + count; ++i) {
3360 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3361 buf = queue->bufs[bidx];
3362 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3363 SBAL_EFLAGS_LAST_ENTRY;
3364
3365 if (queue->bufstates)
3366 queue->bufstates[bidx].user = buf;
3367
3368 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3369 continue;
3370
3371 if (!queue->do_pack) {
3372 if ((atomic_read(&queue->used_buffers) >=
3373 (QETH_HIGH_WATERMARK_PACK -
3374 QETH_WATERMARK_PACK_FUZZ)) &&
3375 !atomic_read(&queue->set_pci_flags_count)) {
3376 /* it's likely that we'll go to packing
3377 * mode soon */
3378 atomic_inc(&queue->set_pci_flags_count);
3379 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3380 }
3381 } else {
3382 if (!atomic_read(&queue->set_pci_flags_count)) {
3383 /*
3384 * there's no outstanding PCI any more, so we
3385 * have to request a PCI to be sure the the PCI
3386 * will wake at some time in the future then we
3387 * can flush packed buffers that might still be
3388 * hanging around, which can happen if no
3389 * further send was requested by the stack
3390 */
3391 atomic_inc(&queue->set_pci_flags_count);
3392 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3393 }
3394 }
3395 }
3396
3397 queue->card->dev->trans_start = jiffies;
3398 if (queue->card->options.performance_stats) {
3399 queue->card->perf_stats.outbound_do_qdio_cnt++;
3400 queue->card->perf_stats.outbound_do_qdio_start_time =
3401 qeth_get_micros();
3402 }
3403 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3404 if (atomic_read(&queue->set_pci_flags_count))
3405 qdio_flags |= QDIO_FLAG_PCI_OUT;
3406 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3407 queue->queue_no, index, count);
3408 if (queue->card->options.performance_stats)
3409 queue->card->perf_stats.outbound_do_qdio_time +=
3410 qeth_get_micros() -
3411 queue->card->perf_stats.outbound_do_qdio_start_time;
3412 atomic_add(count, &queue->used_buffers);
3413 if (rc) {
3414 queue->card->stats.tx_errors += count;
3415 /* ignore temporary SIGA errors without busy condition */
3416 if (rc == -ENOBUFS)
3417 return;
3418 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3419 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3420 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3421 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3422 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3423
3424 /* this must not happen under normal circumstances. if it
3425 * happens something is really wrong -> recover */
3426 qeth_schedule_recovery(queue->card);
3427 return;
3428 }
3429 if (queue->card->options.performance_stats)
3430 queue->card->perf_stats.bufs_sent += count;
3431 }
3432
3433 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3434 {
3435 int index;
3436 int flush_cnt = 0;
3437 int q_was_packing = 0;
3438
3439 /*
3440 * check if weed have to switch to non-packing mode or if
3441 * we have to get a pci flag out on the queue
3442 */
3443 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3444 !atomic_read(&queue->set_pci_flags_count)) {
3445 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3446 QETH_OUT_Q_UNLOCKED) {
3447 /*
3448 * If we get in here, there was no action in
3449 * do_send_packet. So, we check if there is a
3450 * packing buffer to be flushed here.
3451 */
3452 netif_stop_queue(queue->card->dev);
3453 index = queue->next_buf_to_fill;
3454 q_was_packing = queue->do_pack;
3455 /* queue->do_pack may change */
3456 barrier();
3457 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3458 if (!flush_cnt &&
3459 !atomic_read(&queue->set_pci_flags_count))
3460 flush_cnt +=
3461 qeth_flush_buffers_on_no_pci(queue);
3462 if (queue->card->options.performance_stats &&
3463 q_was_packing)
3464 queue->card->perf_stats.bufs_sent_pack +=
3465 flush_cnt;
3466 if (flush_cnt)
3467 qeth_flush_buffers(queue, index, flush_cnt);
3468 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3469 }
3470 }
3471 }
3472
3473 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3474 unsigned long card_ptr)
3475 {
3476 struct qeth_card *card = (struct qeth_card *)card_ptr;
3477
3478 if (card->dev && (card->dev->flags & IFF_UP))
3479 napi_schedule(&card->napi);
3480 }
3481 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3482
3483 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3484 {
3485 int rc;
3486
3487 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3488 rc = -1;
3489 goto out;
3490 } else {
3491 if (card->options.cq == cq) {
3492 rc = 0;
3493 goto out;
3494 }
3495
3496 if (card->state != CARD_STATE_DOWN &&
3497 card->state != CARD_STATE_RECOVER) {
3498 rc = -1;
3499 goto out;
3500 }
3501
3502 qeth_free_qdio_buffers(card);
3503 card->options.cq = cq;
3504 rc = 0;
3505 }
3506 out:
3507 return rc;
3508
3509 }
3510 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3511
3512
3513 static void qeth_qdio_cq_handler(struct qeth_card *card,
3514 unsigned int qdio_err,
3515 unsigned int queue, int first_element, int count) {
3516 struct qeth_qdio_q *cq = card->qdio.c_q;
3517 int i;
3518 int rc;
3519
3520 if (!qeth_is_cq(card, queue))
3521 goto out;
3522
3523 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3524 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3525 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3526
3527 if (qdio_err) {
3528 netif_stop_queue(card->dev);
3529 qeth_schedule_recovery(card);
3530 goto out;
3531 }
3532
3533 if (card->options.performance_stats) {
3534 card->perf_stats.cq_cnt++;
3535 card->perf_stats.cq_start_time = qeth_get_micros();
3536 }
3537
3538 for (i = first_element; i < first_element + count; ++i) {
3539 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3540 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3541 int e;
3542
3543 e = 0;
3544 while (buffer->element[e].addr) {
3545 unsigned long phys_aob_addr;
3546
3547 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3548 qeth_qdio_handle_aob(card, phys_aob_addr);
3549 buffer->element[e].addr = NULL;
3550 buffer->element[e].eflags = 0;
3551 buffer->element[e].sflags = 0;
3552 buffer->element[e].length = 0;
3553
3554 ++e;
3555 }
3556
3557 buffer->element[15].eflags = 0;
3558 buffer->element[15].sflags = 0;
3559 }
3560 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3561 card->qdio.c_q->next_buf_to_init,
3562 count);
3563 if (rc) {
3564 dev_warn(&card->gdev->dev,
3565 "QDIO reported an error, rc=%i\n", rc);
3566 QETH_CARD_TEXT(card, 2, "qcqherr");
3567 }
3568 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3569 + count) % QDIO_MAX_BUFFERS_PER_Q;
3570
3571 netif_wake_queue(card->dev);
3572
3573 if (card->options.performance_stats) {
3574 int delta_t = qeth_get_micros();
3575 delta_t -= card->perf_stats.cq_start_time;
3576 card->perf_stats.cq_time += delta_t;
3577 }
3578 out:
3579 return;
3580 }
3581
3582 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3583 unsigned int queue, int first_elem, int count,
3584 unsigned long card_ptr)
3585 {
3586 struct qeth_card *card = (struct qeth_card *)card_ptr;
3587
3588 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3589 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3590
3591 if (qeth_is_cq(card, queue))
3592 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3593 else if (qdio_err)
3594 qeth_schedule_recovery(card);
3595
3596
3597 }
3598 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3599
3600 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3601 unsigned int qdio_error, int __queue, int first_element,
3602 int count, unsigned long card_ptr)
3603 {
3604 struct qeth_card *card = (struct qeth_card *) card_ptr;
3605 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3606 struct qeth_qdio_out_buffer *buffer;
3607 int i;
3608
3609 QETH_CARD_TEXT(card, 6, "qdouhdl");
3610 if (qdio_error & QDIO_ERROR_FATAL) {
3611 QETH_CARD_TEXT(card, 2, "achkcond");
3612 netif_stop_queue(card->dev);
3613 qeth_schedule_recovery(card);
3614 return;
3615 }
3616 if (card->options.performance_stats) {
3617 card->perf_stats.outbound_handler_cnt++;
3618 card->perf_stats.outbound_handler_start_time =
3619 qeth_get_micros();
3620 }
3621 for (i = first_element; i < (first_element + count); ++i) {
3622 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3623 buffer = queue->bufs[bidx];
3624 qeth_handle_send_error(card, buffer, qdio_error);
3625
3626 if (queue->bufstates &&
3627 (queue->bufstates[bidx].flags &
3628 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3629 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3630
3631 if (atomic_cmpxchg(&buffer->state,
3632 QETH_QDIO_BUF_PRIMED,
3633 QETH_QDIO_BUF_PENDING) ==
3634 QETH_QDIO_BUF_PRIMED) {
3635 qeth_notify_skbs(queue, buffer,
3636 TX_NOTIFY_PENDING);
3637 }
3638 buffer->aob = queue->bufstates[bidx].aob;
3639 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3640 QETH_CARD_TEXT(queue->card, 5, "aob");
3641 QETH_CARD_TEXT_(queue->card, 5, "%lx",
3642 virt_to_phys(buffer->aob));
3643 if (qeth_init_qdio_out_buf(queue, bidx)) {
3644 QETH_CARD_TEXT(card, 2, "outofbuf");
3645 qeth_schedule_recovery(card);
3646 }
3647 } else {
3648 if (card->options.cq == QETH_CQ_ENABLED) {
3649 enum iucv_tx_notify n;
3650
3651 n = qeth_compute_cq_notification(
3652 buffer->buffer->element[15].sflags, 0);
3653 qeth_notify_skbs(queue, buffer, n);
3654 }
3655
3656 qeth_clear_output_buffer(queue, buffer,
3657 QETH_QDIO_BUF_EMPTY);
3658 }
3659 qeth_cleanup_handled_pending(queue, bidx, 0);
3660 }
3661 atomic_sub(count, &queue->used_buffers);
3662 /* check if we need to do something on this outbound queue */
3663 if (card->info.type != QETH_CARD_TYPE_IQD)
3664 qeth_check_outbound_queue(queue);
3665
3666 netif_wake_queue(queue->card->dev);
3667 if (card->options.performance_stats)
3668 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3669 card->perf_stats.outbound_handler_start_time;
3670 }
3671 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3672
3673 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3674 int ipv, int cast_type)
3675 {
3676 if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3677 card->info.type == QETH_CARD_TYPE_OSX))
3678 return card->qdio.default_out_queue;
3679 switch (card->qdio.no_out_queues) {
3680 case 4:
3681 if (cast_type && card->info.is_multicast_different)
3682 return card->info.is_multicast_different &
3683 (card->qdio.no_out_queues - 1);
3684 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3685 const u8 tos = ip_hdr(skb)->tos;
3686
3687 if (card->qdio.do_prio_queueing ==
3688 QETH_PRIO_Q_ING_TOS) {
3689 if (tos & IP_TOS_NOTIMPORTANT)
3690 return 3;
3691 if (tos & IP_TOS_HIGHRELIABILITY)
3692 return 2;
3693 if (tos & IP_TOS_HIGHTHROUGHPUT)
3694 return 1;
3695 if (tos & IP_TOS_LOWDELAY)
3696 return 0;
3697 }
3698 if (card->qdio.do_prio_queueing ==
3699 QETH_PRIO_Q_ING_PREC)
3700 return 3 - (tos >> 6);
3701 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3702 /* TODO: IPv6!!! */
3703 }
3704 return card->qdio.default_out_queue;
3705 case 1: /* fallthrough for single-out-queue 1920-device */
3706 default:
3707 return card->qdio.default_out_queue;
3708 }
3709 }
3710 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3711
3712 int qeth_get_elements_for_frags(struct sk_buff *skb)
3713 {
3714 int cnt, length, e, elements = 0;
3715 struct skb_frag_struct *frag;
3716 char *data;
3717
3718 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3719 frag = &skb_shinfo(skb)->frags[cnt];
3720 data = (char *)page_to_phys(skb_frag_page(frag)) +
3721 frag->page_offset;
3722 length = frag->size;
3723 e = PFN_UP((unsigned long)data + length - 1) -
3724 PFN_DOWN((unsigned long)data);
3725 elements += e;
3726 }
3727 return elements;
3728 }
3729 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3730
3731 int qeth_get_elements_no(struct qeth_card *card,
3732 struct sk_buff *skb, int elems)
3733 {
3734 int dlen = skb->len - skb->data_len;
3735 int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3736 PFN_DOWN((unsigned long)skb->data);
3737
3738 elements_needed += qeth_get_elements_for_frags(skb);
3739
3740 if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3741 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3742 "(Number=%d / Length=%d). Discarded.\n",
3743 (elements_needed+elems), skb->len);
3744 return 0;
3745 }
3746 return elements_needed;
3747 }
3748 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3749
3750 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3751 {
3752 int hroom, inpage, rest;
3753
3754 if (((unsigned long)skb->data & PAGE_MASK) !=
3755 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3756 hroom = skb_headroom(skb);
3757 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3758 rest = len - inpage;
3759 if (rest > hroom)
3760 return 1;
3761 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3762 skb->data -= rest;
3763 skb->tail -= rest;
3764 *hdr = (struct qeth_hdr *)skb->data;
3765 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3766 }
3767 return 0;
3768 }
3769 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3770
3771 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3772 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3773 int offset)
3774 {
3775 int length = skb->len - skb->data_len;
3776 int length_here;
3777 int element;
3778 char *data;
3779 int first_lap, cnt;
3780 struct skb_frag_struct *frag;
3781
3782 element = *next_element_to_fill;
3783 data = skb->data;
3784 first_lap = (is_tso == 0 ? 1 : 0);
3785
3786 if (offset >= 0) {
3787 data = skb->data + offset;
3788 length -= offset;
3789 first_lap = 0;
3790 }
3791
3792 while (length > 0) {
3793 /* length_here is the remaining amount of data in this page */
3794 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3795 if (length < length_here)
3796 length_here = length;
3797
3798 buffer->element[element].addr = data;
3799 buffer->element[element].length = length_here;
3800 length -= length_here;
3801 if (!length) {
3802 if (first_lap)
3803 if (skb_shinfo(skb)->nr_frags)
3804 buffer->element[element].eflags =
3805 SBAL_EFLAGS_FIRST_FRAG;
3806 else
3807 buffer->element[element].eflags = 0;
3808 else
3809 buffer->element[element].eflags =
3810 SBAL_EFLAGS_MIDDLE_FRAG;
3811 } else {
3812 if (first_lap)
3813 buffer->element[element].eflags =
3814 SBAL_EFLAGS_FIRST_FRAG;
3815 else
3816 buffer->element[element].eflags =
3817 SBAL_EFLAGS_MIDDLE_FRAG;
3818 }
3819 data += length_here;
3820 element++;
3821 first_lap = 0;
3822 }
3823
3824 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3825 frag = &skb_shinfo(skb)->frags[cnt];
3826 data = (char *)page_to_phys(skb_frag_page(frag)) +
3827 frag->page_offset;
3828 length = frag->size;
3829 while (length > 0) {
3830 length_here = PAGE_SIZE -
3831 ((unsigned long) data % PAGE_SIZE);
3832 if (length < length_here)
3833 length_here = length;
3834
3835 buffer->element[element].addr = data;
3836 buffer->element[element].length = length_here;
3837 buffer->element[element].eflags =
3838 SBAL_EFLAGS_MIDDLE_FRAG;
3839 length -= length_here;
3840 data += length_here;
3841 element++;
3842 }
3843 }
3844
3845 if (buffer->element[element - 1].eflags)
3846 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3847 *next_element_to_fill = element;
3848 }
3849
3850 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3851 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3852 struct qeth_hdr *hdr, int offset, int hd_len)
3853 {
3854 struct qdio_buffer *buffer;
3855 int flush_cnt = 0, hdr_len, large_send = 0;
3856
3857 buffer = buf->buffer;
3858 atomic_inc(&skb->users);
3859 skb_queue_tail(&buf->skb_list, skb);
3860
3861 /*check first on TSO ....*/
3862 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3863 int element = buf->next_element_to_fill;
3864
3865 hdr_len = sizeof(struct qeth_hdr_tso) +
3866 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3867 /*fill first buffer entry only with header information */
3868 buffer->element[element].addr = skb->data;
3869 buffer->element[element].length = hdr_len;
3870 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3871 buf->next_element_to_fill++;
3872 skb->data += hdr_len;
3873 skb->len -= hdr_len;
3874 large_send = 1;
3875 }
3876
3877 if (offset >= 0) {
3878 int element = buf->next_element_to_fill;
3879 buffer->element[element].addr = hdr;
3880 buffer->element[element].length = sizeof(struct qeth_hdr) +
3881 hd_len;
3882 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3883 buf->is_header[element] = 1;
3884 buf->next_element_to_fill++;
3885 }
3886
3887 __qeth_fill_buffer(skb, buffer, large_send,
3888 (int *)&buf->next_element_to_fill, offset);
3889
3890 if (!queue->do_pack) {
3891 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3892 /* set state to PRIMED -> will be flushed */
3893 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3894 flush_cnt = 1;
3895 } else {
3896 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3897 if (queue->card->options.performance_stats)
3898 queue->card->perf_stats.skbs_sent_pack++;
3899 if (buf->next_element_to_fill >=
3900 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3901 /*
3902 * packed buffer if full -> set state PRIMED
3903 * -> will be flushed
3904 */
3905 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3906 flush_cnt = 1;
3907 }
3908 }
3909 return flush_cnt;
3910 }
3911
3912 int qeth_do_send_packet_fast(struct qeth_card *card,
3913 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3914 struct qeth_hdr *hdr, int elements_needed,
3915 int offset, int hd_len)
3916 {
3917 struct qeth_qdio_out_buffer *buffer;
3918 int index;
3919
3920 /* spin until we get the queue ... */
3921 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3922 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3923 /* ... now we've got the queue */
3924 index = queue->next_buf_to_fill;
3925 buffer = queue->bufs[queue->next_buf_to_fill];
3926 /*
3927 * check if buffer is empty to make sure that we do not 'overtake'
3928 * ourselves and try to fill a buffer that is already primed
3929 */
3930 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3931 goto out;
3932 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3933 QDIO_MAX_BUFFERS_PER_Q;
3934 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3935 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3936 qeth_flush_buffers(queue, index, 1);
3937 return 0;
3938 out:
3939 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3940 return -EBUSY;
3941 }
3942 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3943
3944 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3945 struct sk_buff *skb, struct qeth_hdr *hdr,
3946 int elements_needed)
3947 {
3948 struct qeth_qdio_out_buffer *buffer;
3949 int start_index;
3950 int flush_count = 0;
3951 int do_pack = 0;
3952 int tmp;
3953 int rc = 0;
3954
3955 /* spin until we get the queue ... */
3956 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3957 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3958 start_index = queue->next_buf_to_fill;
3959 buffer = queue->bufs[queue->next_buf_to_fill];
3960 /*
3961 * check if buffer is empty to make sure that we do not 'overtake'
3962 * ourselves and try to fill a buffer that is already primed
3963 */
3964 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3965 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3966 return -EBUSY;
3967 }
3968 /* check if we need to switch packing state of this queue */
3969 qeth_switch_to_packing_if_needed(queue);
3970 if (queue->do_pack) {
3971 do_pack = 1;
3972 /* does packet fit in current buffer? */
3973 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3974 buffer->next_element_to_fill) < elements_needed) {
3975 /* ... no -> set state PRIMED */
3976 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3977 flush_count++;
3978 queue->next_buf_to_fill =
3979 (queue->next_buf_to_fill + 1) %
3980 QDIO_MAX_BUFFERS_PER_Q;
3981 buffer = queue->bufs[queue->next_buf_to_fill];
3982 /* we did a step forward, so check buffer state
3983 * again */
3984 if (atomic_read(&buffer->state) !=
3985 QETH_QDIO_BUF_EMPTY) {
3986 qeth_flush_buffers(queue, start_index,
3987 flush_count);
3988 atomic_set(&queue->state,
3989 QETH_OUT_Q_UNLOCKED);
3990 return -EBUSY;
3991 }
3992 }
3993 }
3994 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3995 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3996 QDIO_MAX_BUFFERS_PER_Q;
3997 flush_count += tmp;
3998 if (flush_count)
3999 qeth_flush_buffers(queue, start_index, flush_count);
4000 else if (!atomic_read(&queue->set_pci_flags_count))
4001 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4002 /*
4003 * queue->state will go from LOCKED -> UNLOCKED or from
4004 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4005 * (switch packing state or flush buffer to get another pci flag out).
4006 * In that case we will enter this loop
4007 */
4008 while (atomic_dec_return(&queue->state)) {
4009 flush_count = 0;
4010 start_index = queue->next_buf_to_fill;
4011 /* check if we can go back to non-packing state */
4012 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4013 /*
4014 * check if we need to flush a packing buffer to get a pci
4015 * flag out on the queue
4016 */
4017 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4018 flush_count += qeth_flush_buffers_on_no_pci(queue);
4019 if (flush_count)
4020 qeth_flush_buffers(queue, start_index, flush_count);
4021 }
4022 /* at this point the queue is UNLOCKED again */
4023 if (queue->card->options.performance_stats && do_pack)
4024 queue->card->perf_stats.bufs_sent_pack += flush_count;
4025
4026 return rc;
4027 }
4028 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4029
4030 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4031 struct qeth_reply *reply, unsigned long data)
4032 {
4033 struct qeth_ipa_cmd *cmd;
4034 struct qeth_ipacmd_setadpparms *setparms;
4035
4036 QETH_CARD_TEXT(card, 4, "prmadpcb");
4037
4038 cmd = (struct qeth_ipa_cmd *) data;
4039 setparms = &(cmd->data.setadapterparms);
4040
4041 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4042 if (cmd->hdr.return_code) {
4043 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
4044 setparms->data.mode = SET_PROMISC_MODE_OFF;
4045 }
4046 card->info.promisc_mode = setparms->data.mode;
4047 return 0;
4048 }
4049
4050 void qeth_setadp_promisc_mode(struct qeth_card *card)
4051 {
4052 enum qeth_ipa_promisc_modes mode;
4053 struct net_device *dev = card->dev;
4054 struct qeth_cmd_buffer *iob;
4055 struct qeth_ipa_cmd *cmd;
4056
4057 QETH_CARD_TEXT(card, 4, "setprom");
4058
4059 if (((dev->flags & IFF_PROMISC) &&
4060 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4061 (!(dev->flags & IFF_PROMISC) &&
4062 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4063 return;
4064 mode = SET_PROMISC_MODE_OFF;
4065 if (dev->flags & IFF_PROMISC)
4066 mode = SET_PROMISC_MODE_ON;
4067 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4068
4069 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4070 sizeof(struct qeth_ipacmd_setadpparms));
4071 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4072 cmd->data.setadapterparms.data.mode = mode;
4073 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4074 }
4075 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4076
4077 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4078 {
4079 struct qeth_card *card;
4080 char dbf_text[15];
4081
4082 card = dev->ml_priv;
4083
4084 QETH_CARD_TEXT(card, 4, "chgmtu");
4085 sprintf(dbf_text, "%8x", new_mtu);
4086 QETH_CARD_TEXT(card, 4, dbf_text);
4087
4088 if (new_mtu < 64)
4089 return -EINVAL;
4090 if (new_mtu > 65535)
4091 return -EINVAL;
4092 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4093 (!qeth_mtu_is_valid(card, new_mtu)))
4094 return -EINVAL;
4095 dev->mtu = new_mtu;
4096 return 0;
4097 }
4098 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4099
4100 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4101 {
4102 struct qeth_card *card;
4103
4104 card = dev->ml_priv;
4105
4106 QETH_CARD_TEXT(card, 5, "getstat");
4107
4108 return &card->stats;
4109 }
4110 EXPORT_SYMBOL_GPL(qeth_get_stats);
4111
4112 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4113 struct qeth_reply *reply, unsigned long data)
4114 {
4115 struct qeth_ipa_cmd *cmd;
4116
4117 QETH_CARD_TEXT(card, 4, "chgmaccb");
4118
4119 cmd = (struct qeth_ipa_cmd *) data;
4120 if (!card->options.layer2 ||
4121 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4122 memcpy(card->dev->dev_addr,
4123 &cmd->data.setadapterparms.data.change_addr.addr,
4124 OSA_ADDR_LEN);
4125 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4126 }
4127 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4128 return 0;
4129 }
4130
4131 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4132 {
4133 int rc;
4134 struct qeth_cmd_buffer *iob;
4135 struct qeth_ipa_cmd *cmd;
4136
4137 QETH_CARD_TEXT(card, 4, "chgmac");
4138
4139 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4140 sizeof(struct qeth_ipacmd_setadpparms));
4141 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4142 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4143 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4144 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4145 card->dev->dev_addr, OSA_ADDR_LEN);
4146 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4147 NULL);
4148 return rc;
4149 }
4150 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4151
4152 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4153 struct qeth_reply *reply, unsigned long data)
4154 {
4155 struct qeth_ipa_cmd *cmd;
4156 struct qeth_set_access_ctrl *access_ctrl_req;
4157 int fallback = *(int *)reply->param;
4158
4159 QETH_CARD_TEXT(card, 4, "setaccb");
4160
4161 cmd = (struct qeth_ipa_cmd *) data;
4162 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4163 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4164 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4165 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4166 cmd->data.setadapterparms.hdr.return_code);
4167 if (cmd->data.setadapterparms.hdr.return_code !=
4168 SET_ACCESS_CTRL_RC_SUCCESS)
4169 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4170 card->gdev->dev.kobj.name,
4171 access_ctrl_req->subcmd_code,
4172 cmd->data.setadapterparms.hdr.return_code);
4173 switch (cmd->data.setadapterparms.hdr.return_code) {
4174 case SET_ACCESS_CTRL_RC_SUCCESS:
4175 if (card->options.isolation == ISOLATION_MODE_NONE) {
4176 dev_info(&card->gdev->dev,
4177 "QDIO data connection isolation is deactivated\n");
4178 } else {
4179 dev_info(&card->gdev->dev,
4180 "QDIO data connection isolation is activated\n");
4181 }
4182 break;
4183 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4184 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4185 "deactivated\n", dev_name(&card->gdev->dev));
4186 if (fallback)
4187 card->options.isolation = card->options.prev_isolation;
4188 break;
4189 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4190 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4191 " activated\n", dev_name(&card->gdev->dev));
4192 if (fallback)
4193 card->options.isolation = card->options.prev_isolation;
4194 break;
4195 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4196 dev_err(&card->gdev->dev, "Adapter does not "
4197 "support QDIO data connection isolation\n");
4198 break;
4199 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4200 dev_err(&card->gdev->dev,
4201 "Adapter is dedicated. "
4202 "QDIO data connection isolation not supported\n");
4203 if (fallback)
4204 card->options.isolation = card->options.prev_isolation;
4205 break;
4206 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4207 dev_err(&card->gdev->dev,
4208 "TSO does not permit QDIO data connection isolation\n");
4209 if (fallback)
4210 card->options.isolation = card->options.prev_isolation;
4211 break;
4212 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4213 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4214 "support reflective relay mode\n");
4215 if (fallback)
4216 card->options.isolation = card->options.prev_isolation;
4217 break;
4218 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4219 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4220 "enabled at the adjacent switch port");
4221 if (fallback)
4222 card->options.isolation = card->options.prev_isolation;
4223 break;
4224 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4225 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4226 "at the adjacent switch failed\n");
4227 break;
4228 default:
4229 /* this should never happen */
4230 if (fallback)
4231 card->options.isolation = card->options.prev_isolation;
4232 break;
4233 }
4234 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4235 return 0;
4236 }
4237
4238 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4239 enum qeth_ipa_isolation_modes isolation, int fallback)
4240 {
4241 int rc;
4242 struct qeth_cmd_buffer *iob;
4243 struct qeth_ipa_cmd *cmd;
4244 struct qeth_set_access_ctrl *access_ctrl_req;
4245
4246 QETH_CARD_TEXT(card, 4, "setacctl");
4247
4248 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4249 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4250
4251 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4252 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4253 sizeof(struct qeth_set_access_ctrl));
4254 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4255 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4256 access_ctrl_req->subcmd_code = isolation;
4257
4258 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4259 &fallback);
4260 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4261 return rc;
4262 }
4263
4264 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4265 {
4266 int rc = 0;
4267
4268 QETH_CARD_TEXT(card, 4, "setactlo");
4269
4270 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4271 card->info.type == QETH_CARD_TYPE_OSX) &&
4272 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4273 rc = qeth_setadpparms_set_access_ctrl(card,
4274 card->options.isolation, fallback);
4275 if (rc) {
4276 QETH_DBF_MESSAGE(3,
4277 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4278 card->gdev->dev.kobj.name,
4279 rc);
4280 rc = -EOPNOTSUPP;
4281 }
4282 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4283 card->options.isolation = ISOLATION_MODE_NONE;
4284
4285 dev_err(&card->gdev->dev, "Adapter does not "
4286 "support QDIO data connection isolation\n");
4287 rc = -EOPNOTSUPP;
4288 }
4289 return rc;
4290 }
4291 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4292
4293 void qeth_tx_timeout(struct net_device *dev)
4294 {
4295 struct qeth_card *card;
4296
4297 card = dev->ml_priv;
4298 QETH_CARD_TEXT(card, 4, "txtimeo");
4299 card->stats.tx_errors++;
4300 qeth_schedule_recovery(card);
4301 }
4302 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4303
4304 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4305 {
4306 struct qeth_card *card = dev->ml_priv;
4307 int rc = 0;
4308
4309 switch (regnum) {
4310 case MII_BMCR: /* Basic mode control register */
4311 rc = BMCR_FULLDPLX;
4312 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4313 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4314 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4315 rc |= BMCR_SPEED100;
4316 break;
4317 case MII_BMSR: /* Basic mode status register */
4318 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4319 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4320 BMSR_100BASE4;
4321 break;
4322 case MII_PHYSID1: /* PHYS ID 1 */
4323 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4324 dev->dev_addr[2];
4325 rc = (rc >> 5) & 0xFFFF;
4326 break;
4327 case MII_PHYSID2: /* PHYS ID 2 */
4328 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4329 break;
4330 case MII_ADVERTISE: /* Advertisement control reg */
4331 rc = ADVERTISE_ALL;
4332 break;
4333 case MII_LPA: /* Link partner ability reg */
4334 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4335 LPA_100BASE4 | LPA_LPACK;
4336 break;
4337 case MII_EXPANSION: /* Expansion register */
4338 break;
4339 case MII_DCOUNTER: /* disconnect counter */
4340 break;
4341 case MII_FCSCOUNTER: /* false carrier counter */
4342 break;
4343 case MII_NWAYTEST: /* N-way auto-neg test register */
4344 break;
4345 case MII_RERRCOUNTER: /* rx error counter */
4346 rc = card->stats.rx_errors;
4347 break;
4348 case MII_SREVISION: /* silicon revision */
4349 break;
4350 case MII_RESV1: /* reserved 1 */
4351 break;
4352 case MII_LBRERROR: /* loopback, rx, bypass error */
4353 break;
4354 case MII_PHYADDR: /* physical address */
4355 break;
4356 case MII_RESV2: /* reserved 2 */
4357 break;
4358 case MII_TPISTATUS: /* TPI status for 10mbps */
4359 break;
4360 case MII_NCONFIG: /* network interface config */
4361 break;
4362 default:
4363 break;
4364 }
4365 return rc;
4366 }
4367 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4368
4369 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4370 struct qeth_cmd_buffer *iob, int len,
4371 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4372 unsigned long),
4373 void *reply_param)
4374 {
4375 u16 s1, s2;
4376
4377 QETH_CARD_TEXT(card, 4, "sendsnmp");
4378
4379 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4380 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4381 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4382 /* adjust PDU length fields in IPA_PDU_HEADER */
4383 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4384 s2 = (u32) len;
4385 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4386 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4387 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4388 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4389 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4390 reply_cb, reply_param);
4391 }
4392
4393 static int qeth_snmp_command_cb(struct qeth_card *card,
4394 struct qeth_reply *reply, unsigned long sdata)
4395 {
4396 struct qeth_ipa_cmd *cmd;
4397 struct qeth_arp_query_info *qinfo;
4398 struct qeth_snmp_cmd *snmp;
4399 unsigned char *data;
4400 __u16 data_len;
4401
4402 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4403
4404 cmd = (struct qeth_ipa_cmd *) sdata;
4405 data = (unsigned char *)((char *)cmd - reply->offset);
4406 qinfo = (struct qeth_arp_query_info *) reply->param;
4407 snmp = &cmd->data.setadapterparms.data.snmp;
4408
4409 if (cmd->hdr.return_code) {
4410 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4411 return 0;
4412 }
4413 if (cmd->data.setadapterparms.hdr.return_code) {
4414 cmd->hdr.return_code =
4415 cmd->data.setadapterparms.hdr.return_code;
4416 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4417 return 0;
4418 }
4419 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4420 if (cmd->data.setadapterparms.hdr.seq_no == 1)
4421 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4422 else
4423 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4424
4425 /* check if there is enough room in userspace */
4426 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4427 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4428 cmd->hdr.return_code = IPA_RC_ENOMEM;
4429 return 0;
4430 }
4431 QETH_CARD_TEXT_(card, 4, "snore%i",
4432 cmd->data.setadapterparms.hdr.used_total);
4433 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4434 cmd->data.setadapterparms.hdr.seq_no);
4435 /*copy entries to user buffer*/
4436 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4437 memcpy(qinfo->udata + qinfo->udata_offset,
4438 (char *)snmp,
4439 data_len + offsetof(struct qeth_snmp_cmd, data));
4440 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4441 } else {
4442 memcpy(qinfo->udata + qinfo->udata_offset,
4443 (char *)&snmp->request, data_len);
4444 }
4445 qinfo->udata_offset += data_len;
4446 /* check if all replies received ... */
4447 QETH_CARD_TEXT_(card, 4, "srtot%i",
4448 cmd->data.setadapterparms.hdr.used_total);
4449 QETH_CARD_TEXT_(card, 4, "srseq%i",
4450 cmd->data.setadapterparms.hdr.seq_no);
4451 if (cmd->data.setadapterparms.hdr.seq_no <
4452 cmd->data.setadapterparms.hdr.used_total)
4453 return 1;
4454 return 0;
4455 }
4456
4457 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4458 {
4459 struct qeth_cmd_buffer *iob;
4460 struct qeth_ipa_cmd *cmd;
4461 struct qeth_snmp_ureq *ureq;
4462 unsigned int req_len;
4463 struct qeth_arp_query_info qinfo = {0, };
4464 int rc = 0;
4465
4466 QETH_CARD_TEXT(card, 3, "snmpcmd");
4467
4468 if (card->info.guestlan)
4469 return -EOPNOTSUPP;
4470
4471 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4472 (!card->options.layer2)) {
4473 return -EOPNOTSUPP;
4474 }
4475 /* skip 4 bytes (data_len struct member) to get req_len */
4476 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4477 return -EFAULT;
4478 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4479 sizeof(struct qeth_ipacmd_hdr) -
4480 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4481 return -EINVAL;
4482 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4483 if (IS_ERR(ureq)) {
4484 QETH_CARD_TEXT(card, 2, "snmpnome");
4485 return PTR_ERR(ureq);
4486 }
4487 qinfo.udata_len = ureq->hdr.data_len;
4488 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4489 if (!qinfo.udata) {
4490 kfree(ureq);
4491 return -ENOMEM;
4492 }
4493 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4494
4495 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4496 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4497 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4498 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4499 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4500 qeth_snmp_command_cb, (void *)&qinfo);
4501 if (rc)
4502 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4503 QETH_CARD_IFNAME(card), rc);
4504 else {
4505 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4506 rc = -EFAULT;
4507 }
4508
4509 kfree(ureq);
4510 kfree(qinfo.udata);
4511 return rc;
4512 }
4513 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4514
4515 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4516 struct qeth_reply *reply, unsigned long data)
4517 {
4518 struct qeth_ipa_cmd *cmd;
4519 struct qeth_qoat_priv *priv;
4520 char *resdata;
4521 int resdatalen;
4522
4523 QETH_CARD_TEXT(card, 3, "qoatcb");
4524
4525 cmd = (struct qeth_ipa_cmd *)data;
4526 priv = (struct qeth_qoat_priv *)reply->param;
4527 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4528 resdata = (char *)data + 28;
4529
4530 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4531 cmd->hdr.return_code = IPA_RC_FFFF;
4532 return 0;
4533 }
4534
4535 memcpy((priv->buffer + priv->response_len), resdata,
4536 resdatalen);
4537 priv->response_len += resdatalen;
4538
4539 if (cmd->data.setadapterparms.hdr.seq_no <
4540 cmd->data.setadapterparms.hdr.used_total)
4541 return 1;
4542 return 0;
4543 }
4544
4545 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4546 {
4547 int rc = 0;
4548 struct qeth_cmd_buffer *iob;
4549 struct qeth_ipa_cmd *cmd;
4550 struct qeth_query_oat *oat_req;
4551 struct qeth_query_oat_data oat_data;
4552 struct qeth_qoat_priv priv;
4553 void __user *tmp;
4554
4555 QETH_CARD_TEXT(card, 3, "qoatcmd");
4556
4557 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4558 rc = -EOPNOTSUPP;
4559 goto out;
4560 }
4561
4562 if (copy_from_user(&oat_data, udata,
4563 sizeof(struct qeth_query_oat_data))) {
4564 rc = -EFAULT;
4565 goto out;
4566 }
4567
4568 priv.buffer_len = oat_data.buffer_len;
4569 priv.response_len = 0;
4570 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL);
4571 if (!priv.buffer) {
4572 rc = -ENOMEM;
4573 goto out;
4574 }
4575
4576 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4577 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4578 sizeof(struct qeth_query_oat));
4579 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4580 oat_req = &cmd->data.setadapterparms.data.query_oat;
4581 oat_req->subcmd_code = oat_data.command;
4582
4583 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4584 &priv);
4585 if (!rc) {
4586 if (is_compat_task())
4587 tmp = compat_ptr(oat_data.ptr);
4588 else
4589 tmp = (void __user *)(unsigned long)oat_data.ptr;
4590
4591 if (copy_to_user(tmp, priv.buffer,
4592 priv.response_len)) {
4593 rc = -EFAULT;
4594 goto out_free;
4595 }
4596
4597 oat_data.response_len = priv.response_len;
4598
4599 if (copy_to_user(udata, &oat_data,
4600 sizeof(struct qeth_query_oat_data)))
4601 rc = -EFAULT;
4602 } else
4603 if (rc == IPA_RC_FFFF)
4604 rc = -EFAULT;
4605
4606 out_free:
4607 kfree(priv.buffer);
4608 out:
4609 return rc;
4610 }
4611 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4612
4613 int qeth_query_card_info_cb(struct qeth_card *card,
4614 struct qeth_reply *reply, unsigned long data)
4615 {
4616 struct qeth_ipa_cmd *cmd;
4617 struct qeth_query_card_info *card_info;
4618 struct carrier_info *carrier_info;
4619
4620 QETH_CARD_TEXT(card, 2, "qcrdincb");
4621 carrier_info = (struct carrier_info *)reply->param;
4622 cmd = (struct qeth_ipa_cmd *)data;
4623 card_info = &cmd->data.setadapterparms.data.card_info;
4624 if (cmd->data.setadapterparms.hdr.return_code == 0) {
4625 carrier_info->card_type = card_info->card_type;
4626 carrier_info->port_mode = card_info->port_mode;
4627 carrier_info->port_speed = card_info->port_speed;
4628 }
4629
4630 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4631 return 0;
4632 }
4633
4634 int qeth_query_card_info(struct qeth_card *card,
4635 struct carrier_info *carrier_info)
4636 {
4637 struct qeth_cmd_buffer *iob;
4638
4639 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4640 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4641 return -EOPNOTSUPP;
4642 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4643 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4644 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4645 (void *)carrier_info);
4646 }
4647 EXPORT_SYMBOL_GPL(qeth_query_card_info);
4648
4649 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4650 {
4651 switch (card->info.type) {
4652 case QETH_CARD_TYPE_IQD:
4653 return 2;
4654 default:
4655 return 0;
4656 }
4657 }
4658
4659 static void qeth_determine_capabilities(struct qeth_card *card)
4660 {
4661 int rc;
4662 int length;
4663 char *prcd;
4664 struct ccw_device *ddev;
4665 int ddev_offline = 0;
4666
4667 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4668 ddev = CARD_DDEV(card);
4669 if (!ddev->online) {
4670 ddev_offline = 1;
4671 rc = ccw_device_set_online(ddev);
4672 if (rc) {
4673 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4674 goto out;
4675 }
4676 }
4677
4678 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4679 if (rc) {
4680 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4681 dev_name(&card->gdev->dev), rc);
4682 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4683 goto out_offline;
4684 }
4685 qeth_configure_unitaddr(card, prcd);
4686 if (ddev_offline)
4687 qeth_configure_blkt_default(card, prcd);
4688 kfree(prcd);
4689
4690 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4691 if (rc)
4692 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4693
4694 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4695 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4696 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4697 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4698 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4699 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4700 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4701 dev_info(&card->gdev->dev,
4702 "Completion Queueing supported\n");
4703 } else {
4704 card->options.cq = QETH_CQ_NOTAVAILABLE;
4705 }
4706
4707
4708 out_offline:
4709 if (ddev_offline == 1)
4710 ccw_device_set_offline(ddev);
4711 out:
4712 return;
4713 }
4714
4715 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4716 struct qdio_buffer **in_sbal_ptrs,
4717 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4718 int i;
4719
4720 if (card->options.cq == QETH_CQ_ENABLED) {
4721 int offset = QDIO_MAX_BUFFERS_PER_Q *
4722 (card->qdio.no_in_queues - 1);
4723 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4724 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4725 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4726 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4727 }
4728
4729 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4730 }
4731 }
4732
4733 static int qeth_qdio_establish(struct qeth_card *card)
4734 {
4735 struct qdio_initialize init_data;
4736 char *qib_param_field;
4737 struct qdio_buffer **in_sbal_ptrs;
4738 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4739 struct qdio_buffer **out_sbal_ptrs;
4740 int i, j, k;
4741 int rc = 0;
4742
4743 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4744
4745 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4746 GFP_KERNEL);
4747 if (!qib_param_field) {
4748 rc = -ENOMEM;
4749 goto out_free_nothing;
4750 }
4751
4752 qeth_create_qib_param_field(card, qib_param_field);
4753 qeth_create_qib_param_field_blkt(card, qib_param_field);
4754
4755 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4756 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4757 GFP_KERNEL);
4758 if (!in_sbal_ptrs) {
4759 rc = -ENOMEM;
4760 goto out_free_qib_param;
4761 }
4762 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4763 in_sbal_ptrs[i] = (struct qdio_buffer *)
4764 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4765 }
4766
4767 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4768 GFP_KERNEL);
4769 if (!queue_start_poll) {
4770 rc = -ENOMEM;
4771 goto out_free_in_sbals;
4772 }
4773 for (i = 0; i < card->qdio.no_in_queues; ++i)
4774 queue_start_poll[i] = card->discipline->start_poll;
4775
4776 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4777
4778 out_sbal_ptrs =
4779 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4780 sizeof(void *), GFP_KERNEL);
4781 if (!out_sbal_ptrs) {
4782 rc = -ENOMEM;
4783 goto out_free_queue_start_poll;
4784 }
4785 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4786 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4787 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4788 card->qdio.out_qs[i]->bufs[j]->buffer);
4789 }
4790
4791 memset(&init_data, 0, sizeof(struct qdio_initialize));
4792 init_data.cdev = CARD_DDEV(card);
4793 init_data.q_format = qeth_get_qdio_q_format(card);
4794 init_data.qib_param_field_format = 0;
4795 init_data.qib_param_field = qib_param_field;
4796 init_data.no_input_qs = card->qdio.no_in_queues;
4797 init_data.no_output_qs = card->qdio.no_out_queues;
4798 init_data.input_handler = card->discipline->input_handler;
4799 init_data.output_handler = card->discipline->output_handler;
4800 init_data.queue_start_poll_array = queue_start_poll;
4801 init_data.int_parm = (unsigned long) card;
4802 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
4803 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4804 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4805 init_data.scan_threshold =
4806 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4807
4808 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4809 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4810 rc = qdio_allocate(&init_data);
4811 if (rc) {
4812 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4813 goto out;
4814 }
4815 rc = qdio_establish(&init_data);
4816 if (rc) {
4817 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4818 qdio_free(CARD_DDEV(card));
4819 }
4820 }
4821
4822 switch (card->options.cq) {
4823 case QETH_CQ_ENABLED:
4824 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4825 break;
4826 case QETH_CQ_DISABLED:
4827 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4828 break;
4829 default:
4830 break;
4831 }
4832 out:
4833 kfree(out_sbal_ptrs);
4834 out_free_queue_start_poll:
4835 kfree(queue_start_poll);
4836 out_free_in_sbals:
4837 kfree(in_sbal_ptrs);
4838 out_free_qib_param:
4839 kfree(qib_param_field);
4840 out_free_nothing:
4841 return rc;
4842 }
4843
4844 static void qeth_core_free_card(struct qeth_card *card)
4845 {
4846
4847 QETH_DBF_TEXT(SETUP, 2, "freecrd");
4848 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4849 qeth_clean_channel(&card->read);
4850 qeth_clean_channel(&card->write);
4851 if (card->dev)
4852 free_netdev(card->dev);
4853 kfree(card->ip_tbd_list);
4854 qeth_free_qdio_buffers(card);
4855 unregister_service_level(&card->qeth_service_level);
4856 kfree(card);
4857 }
4858
4859 void qeth_trace_features(struct qeth_card *card)
4860 {
4861 QETH_CARD_TEXT(card, 2, "features");
4862 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4863 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4864 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4865 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4866 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4867 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4868 QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4869 }
4870 EXPORT_SYMBOL_GPL(qeth_trace_features);
4871
4872 static struct ccw_device_id qeth_ids[] = {
4873 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4874 .driver_info = QETH_CARD_TYPE_OSD},
4875 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4876 .driver_info = QETH_CARD_TYPE_IQD},
4877 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4878 .driver_info = QETH_CARD_TYPE_OSN},
4879 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4880 .driver_info = QETH_CARD_TYPE_OSM},
4881 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4882 .driver_info = QETH_CARD_TYPE_OSX},
4883 {},
4884 };
4885 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4886
4887 static struct ccw_driver qeth_ccw_driver = {
4888 .driver = {
4889 .owner = THIS_MODULE,
4890 .name = "qeth",
4891 },
4892 .ids = qeth_ids,
4893 .probe = ccwgroup_probe_ccwdev,
4894 .remove = ccwgroup_remove_ccwdev,
4895 };
4896
4897 int qeth_core_hardsetup_card(struct qeth_card *card)
4898 {
4899 int retries = 3;
4900 int rc;
4901
4902 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4903 atomic_set(&card->force_alloc_skb, 0);
4904 qeth_update_from_chp_desc(card);
4905 retry:
4906 if (retries < 3)
4907 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4908 dev_name(&card->gdev->dev));
4909 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4910 ccw_device_set_offline(CARD_DDEV(card));
4911 ccw_device_set_offline(CARD_WDEV(card));
4912 ccw_device_set_offline(CARD_RDEV(card));
4913 qdio_free(CARD_DDEV(card));
4914 rc = ccw_device_set_online(CARD_RDEV(card));
4915 if (rc)
4916 goto retriable;
4917 rc = ccw_device_set_online(CARD_WDEV(card));
4918 if (rc)
4919 goto retriable;
4920 rc = ccw_device_set_online(CARD_DDEV(card));
4921 if (rc)
4922 goto retriable;
4923 retriable:
4924 if (rc == -ERESTARTSYS) {
4925 QETH_DBF_TEXT(SETUP, 2, "break1");
4926 return rc;
4927 } else if (rc) {
4928 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4929 if (--retries < 0)
4930 goto out;
4931 else
4932 goto retry;
4933 }
4934 qeth_determine_capabilities(card);
4935 qeth_init_tokens(card);
4936 qeth_init_func_level(card);
4937 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4938 if (rc == -ERESTARTSYS) {
4939 QETH_DBF_TEXT(SETUP, 2, "break2");
4940 return rc;
4941 } else if (rc) {
4942 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4943 if (--retries < 0)
4944 goto out;
4945 else
4946 goto retry;
4947 }
4948 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4949 if (rc == -ERESTARTSYS) {
4950 QETH_DBF_TEXT(SETUP, 2, "break3");
4951 return rc;
4952 } else if (rc) {
4953 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4954 if (--retries < 0)
4955 goto out;
4956 else
4957 goto retry;
4958 }
4959 card->read_or_write_problem = 0;
4960 rc = qeth_mpc_initialize(card);
4961 if (rc) {
4962 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4963 goto out;
4964 }
4965
4966 card->options.ipa4.supported_funcs = 0;
4967 card->options.adp.supported_funcs = 0;
4968 card->options.sbp.supported_funcs = 0;
4969 card->info.diagass_support = 0;
4970 qeth_query_ipassists(card, QETH_PROT_IPV4);
4971 if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4972 qeth_query_setadapterparms(card);
4973 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4974 qeth_query_setdiagass(card);
4975 return 0;
4976 out:
4977 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4978 "an error on the device\n");
4979 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4980 dev_name(&card->gdev->dev), rc);
4981 return rc;
4982 }
4983 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4984
4985 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4986 struct qdio_buffer_element *element,
4987 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4988 {
4989 struct page *page = virt_to_page(element->addr);
4990 if (*pskb == NULL) {
4991 if (qethbuffer->rx_skb) {
4992 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4993 *pskb = qethbuffer->rx_skb;
4994 qethbuffer->rx_skb = NULL;
4995 } else {
4996 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4997 if (!(*pskb))
4998 return -ENOMEM;
4999 }
5000
5001 skb_reserve(*pskb, ETH_HLEN);
5002 if (data_len <= QETH_RX_PULL_LEN) {
5003 memcpy(skb_put(*pskb, data_len), element->addr + offset,
5004 data_len);
5005 } else {
5006 get_page(page);
5007 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5008 element->addr + offset, QETH_RX_PULL_LEN);
5009 skb_fill_page_desc(*pskb, *pfrag, page,
5010 offset + QETH_RX_PULL_LEN,
5011 data_len - QETH_RX_PULL_LEN);
5012 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5013 (*pskb)->len += data_len - QETH_RX_PULL_LEN;
5014 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5015 (*pfrag)++;
5016 }
5017 } else {
5018 get_page(page);
5019 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5020 (*pskb)->data_len += data_len;
5021 (*pskb)->len += data_len;
5022 (*pskb)->truesize += data_len;
5023 (*pfrag)++;
5024 }
5025
5026
5027 return 0;
5028 }
5029
5030 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5031 struct qeth_qdio_buffer *qethbuffer,
5032 struct qdio_buffer_element **__element, int *__offset,
5033 struct qeth_hdr **hdr)
5034 {
5035 struct qdio_buffer_element *element = *__element;
5036 struct qdio_buffer *buffer = qethbuffer->buffer;
5037 int offset = *__offset;
5038 struct sk_buff *skb = NULL;
5039 int skb_len = 0;
5040 void *data_ptr;
5041 int data_len;
5042 int headroom = 0;
5043 int use_rx_sg = 0;
5044 int frag = 0;
5045
5046 /* qeth_hdr must not cross element boundaries */
5047 if (element->length < offset + sizeof(struct qeth_hdr)) {
5048 if (qeth_is_last_sbale(element))
5049 return NULL;
5050 element++;
5051 offset = 0;
5052 if (element->length < sizeof(struct qeth_hdr))
5053 return NULL;
5054 }
5055 *hdr = element->addr + offset;
5056
5057 offset += sizeof(struct qeth_hdr);
5058 switch ((*hdr)->hdr.l2.id) {
5059 case QETH_HEADER_TYPE_LAYER2:
5060 skb_len = (*hdr)->hdr.l2.pkt_length;
5061 break;
5062 case QETH_HEADER_TYPE_LAYER3:
5063 skb_len = (*hdr)->hdr.l3.length;
5064 headroom = ETH_HLEN;
5065 break;
5066 case QETH_HEADER_TYPE_OSN:
5067 skb_len = (*hdr)->hdr.osn.pdu_length;
5068 headroom = sizeof(struct qeth_hdr);
5069 break;
5070 default:
5071 break;
5072 }
5073
5074 if (!skb_len)
5075 return NULL;
5076
5077 if (((skb_len >= card->options.rx_sg_cb) &&
5078 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5079 (!atomic_read(&card->force_alloc_skb))) ||
5080 (card->options.cq == QETH_CQ_ENABLED)) {
5081 use_rx_sg = 1;
5082 } else {
5083 skb = dev_alloc_skb(skb_len + headroom);
5084 if (!skb)
5085 goto no_mem;
5086 if (headroom)
5087 skb_reserve(skb, headroom);
5088 }
5089
5090 data_ptr = element->addr + offset;
5091 while (skb_len) {
5092 data_len = min(skb_len, (int)(element->length - offset));
5093 if (data_len) {
5094 if (use_rx_sg) {
5095 if (qeth_create_skb_frag(qethbuffer, element,
5096 &skb, offset, &frag, data_len))
5097 goto no_mem;
5098 } else {
5099 memcpy(skb_put(skb, data_len), data_ptr,
5100 data_len);
5101 }
5102 }
5103 skb_len -= data_len;
5104 if (skb_len) {
5105 if (qeth_is_last_sbale(element)) {
5106 QETH_CARD_TEXT(card, 4, "unexeob");
5107 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5108 dev_kfree_skb_any(skb);
5109 card->stats.rx_errors++;
5110 return NULL;
5111 }
5112 element++;
5113 offset = 0;
5114 data_ptr = element->addr;
5115 } else {
5116 offset += data_len;
5117 }
5118 }
5119 *__element = element;
5120 *__offset = offset;
5121 if (use_rx_sg && card->options.performance_stats) {
5122 card->perf_stats.sg_skbs_rx++;
5123 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5124 }
5125 return skb;
5126 no_mem:
5127 if (net_ratelimit()) {
5128 QETH_CARD_TEXT(card, 2, "noskbmem");
5129 }
5130 card->stats.rx_dropped++;
5131 return NULL;
5132 }
5133 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5134
5135 static void qeth_unregister_dbf_views(void)
5136 {
5137 int x;
5138 for (x = 0; x < QETH_DBF_INFOS; x++) {
5139 debug_unregister(qeth_dbf[x].id);
5140 qeth_dbf[x].id = NULL;
5141 }
5142 }
5143
5144 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5145 {
5146 char dbf_txt_buf[32];
5147 va_list args;
5148
5149 if (!debug_level_enabled(id, level))
5150 return;
5151 va_start(args, fmt);
5152 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5153 va_end(args);
5154 debug_text_event(id, level, dbf_txt_buf);
5155 }
5156 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5157
5158 static int qeth_register_dbf_views(void)
5159 {
5160 int ret;
5161 int x;
5162
5163 for (x = 0; x < QETH_DBF_INFOS; x++) {
5164 /* register the areas */
5165 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5166 qeth_dbf[x].pages,
5167 qeth_dbf[x].areas,
5168 qeth_dbf[x].len);
5169 if (qeth_dbf[x].id == NULL) {
5170 qeth_unregister_dbf_views();
5171 return -ENOMEM;
5172 }
5173
5174 /* register a view */
5175 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5176 if (ret) {
5177 qeth_unregister_dbf_views();
5178 return ret;
5179 }
5180
5181 /* set a passing level */
5182 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5183 }
5184
5185 return 0;
5186 }
5187
5188 int qeth_core_load_discipline(struct qeth_card *card,
5189 enum qeth_discipline_id discipline)
5190 {
5191 int rc = 0;
5192 mutex_lock(&qeth_mod_mutex);
5193 switch (discipline) {
5194 case QETH_DISCIPLINE_LAYER3:
5195 card->discipline = try_then_request_module(
5196 symbol_get(qeth_l3_discipline), "qeth_l3");
5197 break;
5198 case QETH_DISCIPLINE_LAYER2:
5199 card->discipline = try_then_request_module(
5200 symbol_get(qeth_l2_discipline), "qeth_l2");
5201 break;
5202 }
5203 if (!card->discipline) {
5204 dev_err(&card->gdev->dev, "There is no kernel module to "
5205 "support discipline %d\n", discipline);
5206 rc = -EINVAL;
5207 }
5208 mutex_unlock(&qeth_mod_mutex);
5209 return rc;
5210 }
5211
5212 void qeth_core_free_discipline(struct qeth_card *card)
5213 {
5214 if (card->options.layer2)
5215 symbol_put(qeth_l2_discipline);
5216 else
5217 symbol_put(qeth_l3_discipline);
5218 card->discipline = NULL;
5219 }
5220
5221 static const struct device_type qeth_generic_devtype = {
5222 .name = "qeth_generic",
5223 .groups = qeth_generic_attr_groups,
5224 };
5225 static const struct device_type qeth_osn_devtype = {
5226 .name = "qeth_osn",
5227 .groups = qeth_osn_attr_groups,
5228 };
5229
5230 #define DBF_NAME_LEN 20
5231
5232 struct qeth_dbf_entry {
5233 char dbf_name[DBF_NAME_LEN];
5234 debug_info_t *dbf_info;
5235 struct list_head dbf_list;
5236 };
5237
5238 static LIST_HEAD(qeth_dbf_list);
5239 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5240
5241 static debug_info_t *qeth_get_dbf_entry(char *name)
5242 {
5243 struct qeth_dbf_entry *entry;
5244 debug_info_t *rc = NULL;
5245
5246 mutex_lock(&qeth_dbf_list_mutex);
5247 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5248 if (strcmp(entry->dbf_name, name) == 0) {
5249 rc = entry->dbf_info;
5250 break;
5251 }
5252 }
5253 mutex_unlock(&qeth_dbf_list_mutex);
5254 return rc;
5255 }
5256
5257 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5258 {
5259 struct qeth_dbf_entry *new_entry;
5260
5261 card->debug = debug_register(name, 2, 1, 8);
5262 if (!card->debug) {
5263 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5264 goto err;
5265 }
5266 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5267 goto err_dbg;
5268 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5269 if (!new_entry)
5270 goto err_dbg;
5271 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5272 new_entry->dbf_info = card->debug;
5273 mutex_lock(&qeth_dbf_list_mutex);
5274 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5275 mutex_unlock(&qeth_dbf_list_mutex);
5276
5277 return 0;
5278
5279 err_dbg:
5280 debug_unregister(card->debug);
5281 err:
5282 return -ENOMEM;
5283 }
5284
5285 static void qeth_clear_dbf_list(void)
5286 {
5287 struct qeth_dbf_entry *entry, *tmp;
5288
5289 mutex_lock(&qeth_dbf_list_mutex);
5290 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5291 list_del(&entry->dbf_list);
5292 debug_unregister(entry->dbf_info);
5293 kfree(entry);
5294 }
5295 mutex_unlock(&qeth_dbf_list_mutex);
5296 }
5297
5298 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5299 {
5300 struct qeth_card *card;
5301 struct device *dev;
5302 int rc;
5303 unsigned long flags;
5304 char dbf_name[DBF_NAME_LEN];
5305
5306 QETH_DBF_TEXT(SETUP, 2, "probedev");
5307
5308 dev = &gdev->dev;
5309 if (!get_device(dev))
5310 return -ENODEV;
5311
5312 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5313
5314 card = qeth_alloc_card();
5315 if (!card) {
5316 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5317 rc = -ENOMEM;
5318 goto err_dev;
5319 }
5320
5321 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5322 dev_name(&gdev->dev));
5323 card->debug = qeth_get_dbf_entry(dbf_name);
5324 if (!card->debug) {
5325 rc = qeth_add_dbf_entry(card, dbf_name);
5326 if (rc)
5327 goto err_card;
5328 }
5329
5330 card->read.ccwdev = gdev->cdev[0];
5331 card->write.ccwdev = gdev->cdev[1];
5332 card->data.ccwdev = gdev->cdev[2];
5333 dev_set_drvdata(&gdev->dev, card);
5334 card->gdev = gdev;
5335 gdev->cdev[0]->handler = qeth_irq;
5336 gdev->cdev[1]->handler = qeth_irq;
5337 gdev->cdev[2]->handler = qeth_irq;
5338
5339 rc = qeth_determine_card_type(card);
5340 if (rc) {
5341 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5342 goto err_card;
5343 }
5344 rc = qeth_setup_card(card);
5345 if (rc) {
5346 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5347 goto err_card;
5348 }
5349
5350 if (card->info.type == QETH_CARD_TYPE_OSN)
5351 gdev->dev.type = &qeth_osn_devtype;
5352 else
5353 gdev->dev.type = &qeth_generic_devtype;
5354
5355 switch (card->info.type) {
5356 case QETH_CARD_TYPE_OSN:
5357 case QETH_CARD_TYPE_OSM:
5358 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5359 if (rc)
5360 goto err_card;
5361 rc = card->discipline->setup(card->gdev);
5362 if (rc)
5363 goto err_disc;
5364 case QETH_CARD_TYPE_OSD:
5365 case QETH_CARD_TYPE_OSX:
5366 default:
5367 break;
5368 }
5369
5370 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5371 list_add_tail(&card->list, &qeth_core_card_list.list);
5372 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5373
5374 qeth_determine_capabilities(card);
5375 return 0;
5376
5377 err_disc:
5378 qeth_core_free_discipline(card);
5379 err_card:
5380 qeth_core_free_card(card);
5381 err_dev:
5382 put_device(dev);
5383 return rc;
5384 }
5385
5386 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5387 {
5388 unsigned long flags;
5389 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5390
5391 QETH_DBF_TEXT(SETUP, 2, "removedv");
5392
5393 if (card->discipline) {
5394 card->discipline->remove(gdev);
5395 qeth_core_free_discipline(card);
5396 }
5397
5398 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5399 list_del(&card->list);
5400 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5401 qeth_core_free_card(card);
5402 dev_set_drvdata(&gdev->dev, NULL);
5403 put_device(&gdev->dev);
5404 return;
5405 }
5406
5407 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5408 {
5409 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5410 int rc = 0;
5411 int def_discipline;
5412
5413 if (!card->discipline) {
5414 if (card->info.type == QETH_CARD_TYPE_IQD)
5415 def_discipline = QETH_DISCIPLINE_LAYER3;
5416 else
5417 def_discipline = QETH_DISCIPLINE_LAYER2;
5418 rc = qeth_core_load_discipline(card, def_discipline);
5419 if (rc)
5420 goto err;
5421 rc = card->discipline->setup(card->gdev);
5422 if (rc)
5423 goto err;
5424 }
5425 rc = card->discipline->set_online(gdev);
5426 err:
5427 return rc;
5428 }
5429
5430 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5431 {
5432 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5433 return card->discipline->set_offline(gdev);
5434 }
5435
5436 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5437 {
5438 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5439 if (card->discipline && card->discipline->shutdown)
5440 card->discipline->shutdown(gdev);
5441 }
5442
5443 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5444 {
5445 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5446 if (card->discipline && card->discipline->prepare)
5447 return card->discipline->prepare(gdev);
5448 return 0;
5449 }
5450
5451 static void qeth_core_complete(struct ccwgroup_device *gdev)
5452 {
5453 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5454 if (card->discipline && card->discipline->complete)
5455 card->discipline->complete(gdev);
5456 }
5457
5458 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5459 {
5460 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5461 if (card->discipline && card->discipline->freeze)
5462 return card->discipline->freeze(gdev);
5463 return 0;
5464 }
5465
5466 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5467 {
5468 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5469 if (card->discipline && card->discipline->thaw)
5470 return card->discipline->thaw(gdev);
5471 return 0;
5472 }
5473
5474 static int qeth_core_restore(struct ccwgroup_device *gdev)
5475 {
5476 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5477 if (card->discipline && card->discipline->restore)
5478 return card->discipline->restore(gdev);
5479 return 0;
5480 }
5481
5482 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5483 .driver = {
5484 .owner = THIS_MODULE,
5485 .name = "qeth",
5486 },
5487 .setup = qeth_core_probe_device,
5488 .remove = qeth_core_remove_device,
5489 .set_online = qeth_core_set_online,
5490 .set_offline = qeth_core_set_offline,
5491 .shutdown = qeth_core_shutdown,
5492 .prepare = qeth_core_prepare,
5493 .complete = qeth_core_complete,
5494 .freeze = qeth_core_freeze,
5495 .thaw = qeth_core_thaw,
5496 .restore = qeth_core_restore,
5497 };
5498
5499 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5500 const char *buf, size_t count)
5501 {
5502 int err;
5503
5504 err = ccwgroup_create_dev(qeth_core_root_dev,
5505 &qeth_core_ccwgroup_driver, 3, buf);
5506
5507 return err ? err : count;
5508 }
5509 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5510
5511 static struct attribute *qeth_drv_attrs[] = {
5512 &driver_attr_group.attr,
5513 NULL,
5514 };
5515 static struct attribute_group qeth_drv_attr_group = {
5516 .attrs = qeth_drv_attrs,
5517 };
5518 static const struct attribute_group *qeth_drv_attr_groups[] = {
5519 &qeth_drv_attr_group,
5520 NULL,
5521 };
5522
5523 static struct {
5524 const char str[ETH_GSTRING_LEN];
5525 } qeth_ethtool_stats_keys[] = {
5526 /* 0 */{"rx skbs"},
5527 {"rx buffers"},
5528 {"tx skbs"},
5529 {"tx buffers"},
5530 {"tx skbs no packing"},
5531 {"tx buffers no packing"},
5532 {"tx skbs packing"},
5533 {"tx buffers packing"},
5534 {"tx sg skbs"},
5535 {"tx sg frags"},
5536 /* 10 */{"rx sg skbs"},
5537 {"rx sg frags"},
5538 {"rx sg page allocs"},
5539 {"tx large kbytes"},
5540 {"tx large count"},
5541 {"tx pk state ch n->p"},
5542 {"tx pk state ch p->n"},
5543 {"tx pk watermark low"},
5544 {"tx pk watermark high"},
5545 {"queue 0 buffer usage"},
5546 /* 20 */{"queue 1 buffer usage"},
5547 {"queue 2 buffer usage"},
5548 {"queue 3 buffer usage"},
5549 {"rx poll time"},
5550 {"rx poll count"},
5551 {"rx do_QDIO time"},
5552 {"rx do_QDIO count"},
5553 {"tx handler time"},
5554 {"tx handler count"},
5555 {"tx time"},
5556 /* 30 */{"tx count"},
5557 {"tx do_QDIO time"},
5558 {"tx do_QDIO count"},
5559 {"tx csum"},
5560 {"tx lin"},
5561 {"cq handler count"},
5562 {"cq handler time"}
5563 };
5564
5565 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5566 {
5567 switch (stringset) {
5568 case ETH_SS_STATS:
5569 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5570 default:
5571 return -EINVAL;
5572 }
5573 }
5574 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5575
5576 void qeth_core_get_ethtool_stats(struct net_device *dev,
5577 struct ethtool_stats *stats, u64 *data)
5578 {
5579 struct qeth_card *card = dev->ml_priv;
5580 data[0] = card->stats.rx_packets -
5581 card->perf_stats.initial_rx_packets;
5582 data[1] = card->perf_stats.bufs_rec;
5583 data[2] = card->stats.tx_packets -
5584 card->perf_stats.initial_tx_packets;
5585 data[3] = card->perf_stats.bufs_sent;
5586 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5587 - card->perf_stats.skbs_sent_pack;
5588 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5589 data[6] = card->perf_stats.skbs_sent_pack;
5590 data[7] = card->perf_stats.bufs_sent_pack;
5591 data[8] = card->perf_stats.sg_skbs_sent;
5592 data[9] = card->perf_stats.sg_frags_sent;
5593 data[10] = card->perf_stats.sg_skbs_rx;
5594 data[11] = card->perf_stats.sg_frags_rx;
5595 data[12] = card->perf_stats.sg_alloc_page_rx;
5596 data[13] = (card->perf_stats.large_send_bytes >> 10);
5597 data[14] = card->perf_stats.large_send_cnt;
5598 data[15] = card->perf_stats.sc_dp_p;
5599 data[16] = card->perf_stats.sc_p_dp;
5600 data[17] = QETH_LOW_WATERMARK_PACK;
5601 data[18] = QETH_HIGH_WATERMARK_PACK;
5602 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5603 data[20] = (card->qdio.no_out_queues > 1) ?
5604 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5605 data[21] = (card->qdio.no_out_queues > 2) ?
5606 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5607 data[22] = (card->qdio.no_out_queues > 3) ?
5608 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5609 data[23] = card->perf_stats.inbound_time;
5610 data[24] = card->perf_stats.inbound_cnt;
5611 data[25] = card->perf_stats.inbound_do_qdio_time;
5612 data[26] = card->perf_stats.inbound_do_qdio_cnt;
5613 data[27] = card->perf_stats.outbound_handler_time;
5614 data[28] = card->perf_stats.outbound_handler_cnt;
5615 data[29] = card->perf_stats.outbound_time;
5616 data[30] = card->perf_stats.outbound_cnt;
5617 data[31] = card->perf_stats.outbound_do_qdio_time;
5618 data[32] = card->perf_stats.outbound_do_qdio_cnt;
5619 data[33] = card->perf_stats.tx_csum;
5620 data[34] = card->perf_stats.tx_lin;
5621 data[35] = card->perf_stats.cq_cnt;
5622 data[36] = card->perf_stats.cq_time;
5623 }
5624 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5625
5626 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5627 {
5628 switch (stringset) {
5629 case ETH_SS_STATS:
5630 memcpy(data, &qeth_ethtool_stats_keys,
5631 sizeof(qeth_ethtool_stats_keys));
5632 break;
5633 default:
5634 WARN_ON(1);
5635 break;
5636 }
5637 }
5638 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5639
5640 void qeth_core_get_drvinfo(struct net_device *dev,
5641 struct ethtool_drvinfo *info)
5642 {
5643 struct qeth_card *card = dev->ml_priv;
5644
5645 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5646 sizeof(info->driver));
5647 strlcpy(info->version, "1.0", sizeof(info->version));
5648 strlcpy(info->fw_version, card->info.mcl_level,
5649 sizeof(info->fw_version));
5650 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5651 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5652 }
5653 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5654
5655 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5656 /* Autoneg and full-duplex are supported and advertized uncondionally. */
5657 /* Always advertize and support all speeds up to specified, and only one */
5658 /* specified port type. */
5659 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5660 int maxspeed, int porttype)
5661 {
5662 int port_sup, port_adv, spd_sup, spd_adv;
5663
5664 switch (porttype) {
5665 case PORT_TP:
5666 port_sup = SUPPORTED_TP;
5667 port_adv = ADVERTISED_TP;
5668 break;
5669 case PORT_FIBRE:
5670 port_sup = SUPPORTED_FIBRE;
5671 port_adv = ADVERTISED_FIBRE;
5672 break;
5673 default:
5674 port_sup = SUPPORTED_TP;
5675 port_adv = ADVERTISED_TP;
5676 WARN_ON_ONCE(1);
5677 }
5678
5679 /* "Fallthrough" case'es ordered from high to low result in setting */
5680 /* flags cumulatively, starting from the specified speed and down to */
5681 /* the lowest possible. */
5682 spd_sup = 0;
5683 spd_adv = 0;
5684 switch (maxspeed) {
5685 case SPEED_10000:
5686 spd_sup |= SUPPORTED_10000baseT_Full;
5687 spd_adv |= ADVERTISED_10000baseT_Full;
5688 case SPEED_1000:
5689 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5690 spd_adv |= ADVERTISED_1000baseT_Half |
5691 ADVERTISED_1000baseT_Full;
5692 case SPEED_100:
5693 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5694 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5695 case SPEED_10:
5696 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5697 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5698 break;
5699 default:
5700 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5701 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5702 WARN_ON_ONCE(1);
5703 }
5704 ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5705 ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5706 }
5707
5708 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5709 struct ethtool_cmd *ecmd)
5710 {
5711 struct qeth_card *card = netdev->ml_priv;
5712 enum qeth_link_types link_type;
5713 struct carrier_info carrier_info;
5714
5715 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5716 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5717 else
5718 link_type = card->info.link_type;
5719
5720 ecmd->transceiver = XCVR_INTERNAL;
5721 ecmd->duplex = DUPLEX_FULL;
5722 ecmd->autoneg = AUTONEG_ENABLE;
5723
5724 switch (link_type) {
5725 case QETH_LINK_TYPE_FAST_ETH:
5726 case QETH_LINK_TYPE_LANE_ETH100:
5727 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5728 ecmd->speed = SPEED_100;
5729 ecmd->port = PORT_TP;
5730 break;
5731
5732 case QETH_LINK_TYPE_GBIT_ETH:
5733 case QETH_LINK_TYPE_LANE_ETH1000:
5734 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5735 ecmd->speed = SPEED_1000;
5736 ecmd->port = PORT_FIBRE;
5737 break;
5738
5739 case QETH_LINK_TYPE_10GBIT_ETH:
5740 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5741 ecmd->speed = SPEED_10000;
5742 ecmd->port = PORT_FIBRE;
5743 break;
5744
5745 default:
5746 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5747 ecmd->speed = SPEED_10;
5748 ecmd->port = PORT_TP;
5749 }
5750
5751 /* Check if we can obtain more accurate information. */
5752 /* If QUERY_CARD_INFO command is not supported or fails, */
5753 /* just return the heuristics that was filled above. */
5754 if (qeth_query_card_info(card, &carrier_info) != 0)
5755 return 0;
5756
5757 netdev_dbg(netdev,
5758 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5759 carrier_info.card_type,
5760 carrier_info.port_mode,
5761 carrier_info.port_speed);
5762
5763 /* Update attributes for which we've obtained more authoritative */
5764 /* information, leave the rest the way they where filled above. */
5765 switch (carrier_info.card_type) {
5766 case CARD_INFO_TYPE_1G_COPPER_A:
5767 case CARD_INFO_TYPE_1G_COPPER_B:
5768 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
5769 ecmd->port = PORT_TP;
5770 break;
5771 case CARD_INFO_TYPE_1G_FIBRE_A:
5772 case CARD_INFO_TYPE_1G_FIBRE_B:
5773 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5774 ecmd->port = PORT_FIBRE;
5775 break;
5776 case CARD_INFO_TYPE_10G_FIBRE_A:
5777 case CARD_INFO_TYPE_10G_FIBRE_B:
5778 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5779 ecmd->port = PORT_FIBRE;
5780 break;
5781 }
5782
5783 switch (carrier_info.port_mode) {
5784 case CARD_INFO_PORTM_FULLDUPLEX:
5785 ecmd->duplex = DUPLEX_FULL;
5786 break;
5787 case CARD_INFO_PORTM_HALFDUPLEX:
5788 ecmd->duplex = DUPLEX_HALF;
5789 break;
5790 }
5791
5792 switch (carrier_info.port_speed) {
5793 case CARD_INFO_PORTS_10M:
5794 ecmd->speed = SPEED_10;
5795 break;
5796 case CARD_INFO_PORTS_100M:
5797 ecmd->speed = SPEED_100;
5798 break;
5799 case CARD_INFO_PORTS_1G:
5800 ecmd->speed = SPEED_1000;
5801 break;
5802 case CARD_INFO_PORTS_10G:
5803 ecmd->speed = SPEED_10000;
5804 break;
5805 }
5806
5807 return 0;
5808 }
5809 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5810
5811 static int __init qeth_core_init(void)
5812 {
5813 int rc;
5814
5815 pr_info("loading core functions\n");
5816 INIT_LIST_HEAD(&qeth_core_card_list.list);
5817 INIT_LIST_HEAD(&qeth_dbf_list);
5818 rwlock_init(&qeth_core_card_list.rwlock);
5819 mutex_init(&qeth_mod_mutex);
5820
5821 qeth_wq = create_singlethread_workqueue("qeth_wq");
5822
5823 rc = qeth_register_dbf_views();
5824 if (rc)
5825 goto out_err;
5826 qeth_core_root_dev = root_device_register("qeth");
5827 rc = PTR_RET(qeth_core_root_dev);
5828 if (rc)
5829 goto register_err;
5830 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5831 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5832 if (!qeth_core_header_cache) {
5833 rc = -ENOMEM;
5834 goto slab_err;
5835 }
5836 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5837 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5838 if (!qeth_qdio_outbuf_cache) {
5839 rc = -ENOMEM;
5840 goto cqslab_err;
5841 }
5842 rc = ccw_driver_register(&qeth_ccw_driver);
5843 if (rc)
5844 goto ccw_err;
5845 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5846 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5847 if (rc)
5848 goto ccwgroup_err;
5849
5850 return 0;
5851
5852 ccwgroup_err:
5853 ccw_driver_unregister(&qeth_ccw_driver);
5854 ccw_err:
5855 kmem_cache_destroy(qeth_qdio_outbuf_cache);
5856 cqslab_err:
5857 kmem_cache_destroy(qeth_core_header_cache);
5858 slab_err:
5859 root_device_unregister(qeth_core_root_dev);
5860 register_err:
5861 qeth_unregister_dbf_views();
5862 out_err:
5863 pr_err("Initializing the qeth device driver failed\n");
5864 return rc;
5865 }
5866
5867 static void __exit qeth_core_exit(void)
5868 {
5869 qeth_clear_dbf_list();
5870 destroy_workqueue(qeth_wq);
5871 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5872 ccw_driver_unregister(&qeth_ccw_driver);
5873 kmem_cache_destroy(qeth_qdio_outbuf_cache);
5874 kmem_cache_destroy(qeth_core_header_cache);
5875 root_device_unregister(qeth_core_root_dev);
5876 qeth_unregister_dbf_views();
5877 pr_info("core functions removed\n");
5878 }
5879
5880 module_init(qeth_core_init);
5881 module_exit(qeth_core_exit);
5882 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5883 MODULE_DESCRIPTION("qeth core functions");
5884 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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