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Merge tag 'apparmor-pr-2017-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git...
[mirror_ubuntu-bionic-kernel.git] / drivers / s390 / net / qeth_core_main.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright IBM Corp. 2007, 2009
4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
10 #define KMSG_COMPONENT "qeth"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
13 #include <linux/module.h>
14 #include <linux/moduleparam.h>
15 #include <linux/string.h>
16 #include <linux/errno.h>
17 #include <linux/kernel.h>
18 #include <linux/ip.h>
19 #include <linux/tcp.h>
20 #include <linux/mii.h>
21 #include <linux/kthread.h>
22 #include <linux/slab.h>
23 #include <net/iucv/af_iucv.h>
24 #include <net/dsfield.h>
25
26 #include <asm/ebcdic.h>
27 #include <asm/chpid.h>
28 #include <asm/io.h>
29 #include <asm/sysinfo.h>
30 #include <asm/compat.h>
31 #include <asm/diag.h>
32 #include <asm/cio.h>
33 #include <asm/ccwdev.h>
34
35 #include "qeth_core.h"
36
37 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
38 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
39 /* N P A M L V H */
40 [QETH_DBF_SETUP] = {"qeth_setup",
41 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
42 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
43 &debug_sprintf_view, NULL},
44 [QETH_DBF_CTRL] = {"qeth_control",
45 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
46 };
47 EXPORT_SYMBOL_GPL(qeth_dbf);
48
49 struct qeth_card_list_struct qeth_core_card_list;
50 EXPORT_SYMBOL_GPL(qeth_core_card_list);
51 struct kmem_cache *qeth_core_header_cache;
52 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
53 static struct kmem_cache *qeth_qdio_outbuf_cache;
54
55 static struct device *qeth_core_root_dev;
56 static struct lock_class_key qdio_out_skb_queue_key;
57 static struct mutex qeth_mod_mutex;
58
59 static void qeth_send_control_data_cb(struct qeth_channel *,
60 struct qeth_cmd_buffer *);
61 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
62 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
63 static void qeth_free_buffer_pool(struct qeth_card *);
64 static int qeth_qdio_establish(struct qeth_card *);
65 static void qeth_free_qdio_buffers(struct qeth_card *);
66 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
67 struct qeth_qdio_out_buffer *buf,
68 enum iucv_tx_notify notification);
69 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
70 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
71 struct qeth_qdio_out_buffer *buf,
72 enum qeth_qdio_buffer_states newbufstate);
73 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
74
75 struct workqueue_struct *qeth_wq;
76 EXPORT_SYMBOL_GPL(qeth_wq);
77
78 int qeth_card_hw_is_reachable(struct qeth_card *card)
79 {
80 return (card->state == CARD_STATE_SOFTSETUP) ||
81 (card->state == CARD_STATE_UP);
82 }
83 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
84
85 static void qeth_close_dev_handler(struct work_struct *work)
86 {
87 struct qeth_card *card;
88
89 card = container_of(work, struct qeth_card, close_dev_work);
90 QETH_CARD_TEXT(card, 2, "cldevhdl");
91 rtnl_lock();
92 dev_close(card->dev);
93 rtnl_unlock();
94 ccwgroup_set_offline(card->gdev);
95 }
96
97 void qeth_close_dev(struct qeth_card *card)
98 {
99 QETH_CARD_TEXT(card, 2, "cldevsubm");
100 queue_work(qeth_wq, &card->close_dev_work);
101 }
102 EXPORT_SYMBOL_GPL(qeth_close_dev);
103
104 static const char *qeth_get_cardname(struct qeth_card *card)
105 {
106 if (card->info.guestlan) {
107 switch (card->info.type) {
108 case QETH_CARD_TYPE_OSD:
109 return " Virtual NIC QDIO";
110 case QETH_CARD_TYPE_IQD:
111 return " Virtual NIC Hiper";
112 case QETH_CARD_TYPE_OSM:
113 return " Virtual NIC QDIO - OSM";
114 case QETH_CARD_TYPE_OSX:
115 return " Virtual NIC QDIO - OSX";
116 default:
117 return " unknown";
118 }
119 } else {
120 switch (card->info.type) {
121 case QETH_CARD_TYPE_OSD:
122 return " OSD Express";
123 case QETH_CARD_TYPE_IQD:
124 return " HiperSockets";
125 case QETH_CARD_TYPE_OSN:
126 return " OSN QDIO";
127 case QETH_CARD_TYPE_OSM:
128 return " OSM QDIO";
129 case QETH_CARD_TYPE_OSX:
130 return " OSX QDIO";
131 default:
132 return " unknown";
133 }
134 }
135 return " n/a";
136 }
137
138 /* max length to be returned: 14 */
139 const char *qeth_get_cardname_short(struct qeth_card *card)
140 {
141 if (card->info.guestlan) {
142 switch (card->info.type) {
143 case QETH_CARD_TYPE_OSD:
144 return "Virt.NIC QDIO";
145 case QETH_CARD_TYPE_IQD:
146 return "Virt.NIC Hiper";
147 case QETH_CARD_TYPE_OSM:
148 return "Virt.NIC OSM";
149 case QETH_CARD_TYPE_OSX:
150 return "Virt.NIC OSX";
151 default:
152 return "unknown";
153 }
154 } else {
155 switch (card->info.type) {
156 case QETH_CARD_TYPE_OSD:
157 switch (card->info.link_type) {
158 case QETH_LINK_TYPE_FAST_ETH:
159 return "OSD_100";
160 case QETH_LINK_TYPE_HSTR:
161 return "HSTR";
162 case QETH_LINK_TYPE_GBIT_ETH:
163 return "OSD_1000";
164 case QETH_LINK_TYPE_10GBIT_ETH:
165 return "OSD_10GIG";
166 case QETH_LINK_TYPE_LANE_ETH100:
167 return "OSD_FE_LANE";
168 case QETH_LINK_TYPE_LANE_TR:
169 return "OSD_TR_LANE";
170 case QETH_LINK_TYPE_LANE_ETH1000:
171 return "OSD_GbE_LANE";
172 case QETH_LINK_TYPE_LANE:
173 return "OSD_ATM_LANE";
174 default:
175 return "OSD_Express";
176 }
177 case QETH_CARD_TYPE_IQD:
178 return "HiperSockets";
179 case QETH_CARD_TYPE_OSN:
180 return "OSN";
181 case QETH_CARD_TYPE_OSM:
182 return "OSM_1000";
183 case QETH_CARD_TYPE_OSX:
184 return "OSX_10GIG";
185 default:
186 return "unknown";
187 }
188 }
189 return "n/a";
190 }
191
192 void qeth_set_recovery_task(struct qeth_card *card)
193 {
194 card->recovery_task = current;
195 }
196 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
197
198 void qeth_clear_recovery_task(struct qeth_card *card)
199 {
200 card->recovery_task = NULL;
201 }
202 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
203
204 static bool qeth_is_recovery_task(const struct qeth_card *card)
205 {
206 return card->recovery_task == current;
207 }
208
209 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
210 int clear_start_mask)
211 {
212 unsigned long flags;
213
214 spin_lock_irqsave(&card->thread_mask_lock, flags);
215 card->thread_allowed_mask = threads;
216 if (clear_start_mask)
217 card->thread_start_mask &= threads;
218 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
219 wake_up(&card->wait_q);
220 }
221 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
222
223 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
224 {
225 unsigned long flags;
226 int rc = 0;
227
228 spin_lock_irqsave(&card->thread_mask_lock, flags);
229 rc = (card->thread_running_mask & threads);
230 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
231 return rc;
232 }
233 EXPORT_SYMBOL_GPL(qeth_threads_running);
234
235 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
236 {
237 if (qeth_is_recovery_task(card))
238 return 0;
239 return wait_event_interruptible(card->wait_q,
240 qeth_threads_running(card, threads) == 0);
241 }
242 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
243
244 void qeth_clear_working_pool_list(struct qeth_card *card)
245 {
246 struct qeth_buffer_pool_entry *pool_entry, *tmp;
247
248 QETH_CARD_TEXT(card, 5, "clwrklst");
249 list_for_each_entry_safe(pool_entry, tmp,
250 &card->qdio.in_buf_pool.entry_list, list){
251 list_del(&pool_entry->list);
252 }
253 }
254 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
255
256 static int qeth_alloc_buffer_pool(struct qeth_card *card)
257 {
258 struct qeth_buffer_pool_entry *pool_entry;
259 void *ptr;
260 int i, j;
261
262 QETH_CARD_TEXT(card, 5, "alocpool");
263 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
264 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
265 if (!pool_entry) {
266 qeth_free_buffer_pool(card);
267 return -ENOMEM;
268 }
269 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
270 ptr = (void *) __get_free_page(GFP_KERNEL);
271 if (!ptr) {
272 while (j > 0)
273 free_page((unsigned long)
274 pool_entry->elements[--j]);
275 kfree(pool_entry);
276 qeth_free_buffer_pool(card);
277 return -ENOMEM;
278 }
279 pool_entry->elements[j] = ptr;
280 }
281 list_add(&pool_entry->init_list,
282 &card->qdio.init_pool.entry_list);
283 }
284 return 0;
285 }
286
287 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
288 {
289 QETH_CARD_TEXT(card, 2, "realcbp");
290
291 if ((card->state != CARD_STATE_DOWN) &&
292 (card->state != CARD_STATE_RECOVER))
293 return -EPERM;
294
295 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
296 qeth_clear_working_pool_list(card);
297 qeth_free_buffer_pool(card);
298 card->qdio.in_buf_pool.buf_count = bufcnt;
299 card->qdio.init_pool.buf_count = bufcnt;
300 return qeth_alloc_buffer_pool(card);
301 }
302 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
303
304 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
305 {
306 if (!q)
307 return;
308
309 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
310 kfree(q);
311 }
312
313 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
314 {
315 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
316 int i;
317
318 if (!q)
319 return NULL;
320
321 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
322 kfree(q);
323 return NULL;
324 }
325
326 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
327 q->bufs[i].buffer = q->qdio_bufs[i];
328
329 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
330 return q;
331 }
332
333 static int qeth_cq_init(struct qeth_card *card)
334 {
335 int rc;
336
337 if (card->options.cq == QETH_CQ_ENABLED) {
338 QETH_DBF_TEXT(SETUP, 2, "cqinit");
339 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
340 QDIO_MAX_BUFFERS_PER_Q);
341 card->qdio.c_q->next_buf_to_init = 127;
342 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
343 card->qdio.no_in_queues - 1, 0,
344 127);
345 if (rc) {
346 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
347 goto out;
348 }
349 }
350 rc = 0;
351 out:
352 return rc;
353 }
354
355 static int qeth_alloc_cq(struct qeth_card *card)
356 {
357 int rc;
358
359 if (card->options.cq == QETH_CQ_ENABLED) {
360 int i;
361 struct qdio_outbuf_state *outbuf_states;
362
363 QETH_DBF_TEXT(SETUP, 2, "cqon");
364 card->qdio.c_q = qeth_alloc_qdio_queue();
365 if (!card->qdio.c_q) {
366 rc = -1;
367 goto kmsg_out;
368 }
369 card->qdio.no_in_queues = 2;
370 card->qdio.out_bufstates =
371 kzalloc(card->qdio.no_out_queues *
372 QDIO_MAX_BUFFERS_PER_Q *
373 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
374 outbuf_states = card->qdio.out_bufstates;
375 if (outbuf_states == NULL) {
376 rc = -1;
377 goto free_cq_out;
378 }
379 for (i = 0; i < card->qdio.no_out_queues; ++i) {
380 card->qdio.out_qs[i]->bufstates = outbuf_states;
381 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
382 }
383 } else {
384 QETH_DBF_TEXT(SETUP, 2, "nocq");
385 card->qdio.c_q = NULL;
386 card->qdio.no_in_queues = 1;
387 }
388 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
389 rc = 0;
390 out:
391 return rc;
392 free_cq_out:
393 qeth_free_qdio_queue(card->qdio.c_q);
394 card->qdio.c_q = NULL;
395 kmsg_out:
396 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
397 goto out;
398 }
399
400 static void qeth_free_cq(struct qeth_card *card)
401 {
402 if (card->qdio.c_q) {
403 --card->qdio.no_in_queues;
404 qeth_free_qdio_queue(card->qdio.c_q);
405 card->qdio.c_q = NULL;
406 }
407 kfree(card->qdio.out_bufstates);
408 card->qdio.out_bufstates = NULL;
409 }
410
411 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
412 int delayed)
413 {
414 enum iucv_tx_notify n;
415
416 switch (sbalf15) {
417 case 0:
418 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
419 break;
420 case 4:
421 case 16:
422 case 17:
423 case 18:
424 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
425 TX_NOTIFY_UNREACHABLE;
426 break;
427 default:
428 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
429 TX_NOTIFY_GENERALERROR;
430 break;
431 }
432
433 return n;
434 }
435
436 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
437 int forced_cleanup)
438 {
439 if (q->card->options.cq != QETH_CQ_ENABLED)
440 return;
441
442 if (q->bufs[bidx]->next_pending != NULL) {
443 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
444 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
445
446 while (c) {
447 if (forced_cleanup ||
448 atomic_read(&c->state) ==
449 QETH_QDIO_BUF_HANDLED_DELAYED) {
450 struct qeth_qdio_out_buffer *f = c;
451 QETH_CARD_TEXT(f->q->card, 5, "fp");
452 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
453 /* release here to avoid interleaving between
454 outbound tasklet and inbound tasklet
455 regarding notifications and lifecycle */
456 qeth_release_skbs(c);
457
458 c = f->next_pending;
459 WARN_ON_ONCE(head->next_pending != f);
460 head->next_pending = c;
461 kmem_cache_free(qeth_qdio_outbuf_cache, f);
462 } else {
463 head = c;
464 c = c->next_pending;
465 }
466
467 }
468 }
469 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
470 QETH_QDIO_BUF_HANDLED_DELAYED)) {
471 /* for recovery situations */
472 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
473 qeth_init_qdio_out_buf(q, bidx);
474 QETH_CARD_TEXT(q->card, 2, "clprecov");
475 }
476 }
477
478
479 static void qeth_qdio_handle_aob(struct qeth_card *card,
480 unsigned long phys_aob_addr)
481 {
482 struct qaob *aob;
483 struct qeth_qdio_out_buffer *buffer;
484 enum iucv_tx_notify notification;
485
486 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
487 QETH_CARD_TEXT(card, 5, "haob");
488 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
489 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
490 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
491
492 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
493 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
494 notification = TX_NOTIFY_OK;
495 } else {
496 WARN_ON_ONCE(atomic_read(&buffer->state) !=
497 QETH_QDIO_BUF_PENDING);
498 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
499 notification = TX_NOTIFY_DELAYED_OK;
500 }
501
502 if (aob->aorc != 0) {
503 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
504 notification = qeth_compute_cq_notification(aob->aorc, 1);
505 }
506 qeth_notify_skbs(buffer->q, buffer, notification);
507
508 buffer->aob = NULL;
509 qeth_clear_output_buffer(buffer->q, buffer,
510 QETH_QDIO_BUF_HANDLED_DELAYED);
511
512 /* from here on: do not touch buffer anymore */
513 qdio_release_aob(aob);
514 }
515
516 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
517 {
518 return card->options.cq == QETH_CQ_ENABLED &&
519 card->qdio.c_q != NULL &&
520 queue != 0 &&
521 queue == card->qdio.no_in_queues - 1;
522 }
523
524
525 static int qeth_issue_next_read(struct qeth_card *card)
526 {
527 int rc;
528 struct qeth_cmd_buffer *iob;
529
530 QETH_CARD_TEXT(card, 5, "issnxrd");
531 if (card->read.state != CH_STATE_UP)
532 return -EIO;
533 iob = qeth_get_buffer(&card->read);
534 if (!iob) {
535 dev_warn(&card->gdev->dev, "The qeth device driver "
536 "failed to recover an error on the device\n");
537 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
538 "available\n", dev_name(&card->gdev->dev));
539 return -ENOMEM;
540 }
541 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
542 QETH_CARD_TEXT(card, 6, "noirqpnd");
543 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
544 (addr_t) iob, 0, 0);
545 if (rc) {
546 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
547 "rc=%i\n", dev_name(&card->gdev->dev), rc);
548 atomic_set(&card->read.irq_pending, 0);
549 card->read_or_write_problem = 1;
550 qeth_schedule_recovery(card);
551 wake_up(&card->wait_q);
552 }
553 return rc;
554 }
555
556 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
557 {
558 struct qeth_reply *reply;
559
560 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
561 if (reply) {
562 atomic_set(&reply->refcnt, 1);
563 atomic_set(&reply->received, 0);
564 reply->card = card;
565 }
566 return reply;
567 }
568
569 static void qeth_get_reply(struct qeth_reply *reply)
570 {
571 WARN_ON(atomic_read(&reply->refcnt) <= 0);
572 atomic_inc(&reply->refcnt);
573 }
574
575 static void qeth_put_reply(struct qeth_reply *reply)
576 {
577 WARN_ON(atomic_read(&reply->refcnt) <= 0);
578 if (atomic_dec_and_test(&reply->refcnt))
579 kfree(reply);
580 }
581
582 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
583 struct qeth_card *card)
584 {
585 char *ipa_name;
586 int com = cmd->hdr.command;
587 ipa_name = qeth_get_ipa_cmd_name(com);
588 if (rc)
589 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
590 "x%X \"%s\"\n",
591 ipa_name, com, dev_name(&card->gdev->dev),
592 QETH_CARD_IFNAME(card), rc,
593 qeth_get_ipa_msg(rc));
594 else
595 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
596 ipa_name, com, dev_name(&card->gdev->dev),
597 QETH_CARD_IFNAME(card));
598 }
599
600 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
601 struct qeth_cmd_buffer *iob)
602 {
603 struct qeth_ipa_cmd *cmd = NULL;
604
605 QETH_CARD_TEXT(card, 5, "chkipad");
606 if (IS_IPA(iob->data)) {
607 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
608 if (IS_IPA_REPLY(cmd)) {
609 if (cmd->hdr.command != IPA_CMD_SETCCID &&
610 cmd->hdr.command != IPA_CMD_DELCCID &&
611 cmd->hdr.command != IPA_CMD_MODCCID &&
612 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
613 qeth_issue_ipa_msg(cmd,
614 cmd->hdr.return_code, card);
615 return cmd;
616 } else {
617 switch (cmd->hdr.command) {
618 case IPA_CMD_STOPLAN:
619 if (cmd->hdr.return_code ==
620 IPA_RC_VEPA_TO_VEB_TRANSITION) {
621 dev_err(&card->gdev->dev,
622 "Interface %s is down because the "
623 "adjacent port is no longer in "
624 "reflective relay mode\n",
625 QETH_CARD_IFNAME(card));
626 qeth_close_dev(card);
627 } else {
628 dev_warn(&card->gdev->dev,
629 "The link for interface %s on CHPID"
630 " 0x%X failed\n",
631 QETH_CARD_IFNAME(card),
632 card->info.chpid);
633 qeth_issue_ipa_msg(cmd,
634 cmd->hdr.return_code, card);
635 }
636 card->lan_online = 0;
637 if (card->dev && netif_carrier_ok(card->dev))
638 netif_carrier_off(card->dev);
639 return NULL;
640 case IPA_CMD_STARTLAN:
641 dev_info(&card->gdev->dev,
642 "The link for %s on CHPID 0x%X has"
643 " been restored\n",
644 QETH_CARD_IFNAME(card),
645 card->info.chpid);
646 netif_carrier_on(card->dev);
647 card->lan_online = 1;
648 if (card->info.hwtrap)
649 card->info.hwtrap = 2;
650 qeth_schedule_recovery(card);
651 return NULL;
652 case IPA_CMD_SETBRIDGEPORT_IQD:
653 case IPA_CMD_SETBRIDGEPORT_OSA:
654 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
655 if (card->discipline->control_event_handler
656 (card, cmd))
657 return cmd;
658 else
659 return NULL;
660 case IPA_CMD_MODCCID:
661 return cmd;
662 case IPA_CMD_REGISTER_LOCAL_ADDR:
663 QETH_CARD_TEXT(card, 3, "irla");
664 break;
665 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
666 QETH_CARD_TEXT(card, 3, "urla");
667 break;
668 default:
669 QETH_DBF_MESSAGE(2, "Received data is IPA "
670 "but not a reply!\n");
671 break;
672 }
673 }
674 }
675 return cmd;
676 }
677
678 void qeth_clear_ipacmd_list(struct qeth_card *card)
679 {
680 struct qeth_reply *reply, *r;
681 unsigned long flags;
682
683 QETH_CARD_TEXT(card, 4, "clipalst");
684
685 spin_lock_irqsave(&card->lock, flags);
686 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
687 qeth_get_reply(reply);
688 reply->rc = -EIO;
689 atomic_inc(&reply->received);
690 list_del_init(&reply->list);
691 wake_up(&reply->wait_q);
692 qeth_put_reply(reply);
693 }
694 spin_unlock_irqrestore(&card->lock, flags);
695 atomic_set(&card->write.irq_pending, 0);
696 }
697 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
698
699 static int qeth_check_idx_response(struct qeth_card *card,
700 unsigned char *buffer)
701 {
702 if (!buffer)
703 return 0;
704
705 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
706 if ((buffer[2] & 0xc0) == 0xc0) {
707 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
708 "with cause code 0x%02x%s\n",
709 buffer[4],
710 ((buffer[4] == 0x22) ?
711 " -- try another portname" : ""));
712 QETH_CARD_TEXT(card, 2, "ckidxres");
713 QETH_CARD_TEXT(card, 2, " idxterm");
714 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
715 if (buffer[4] == 0xf6) {
716 dev_err(&card->gdev->dev,
717 "The qeth device is not configured "
718 "for the OSI layer required by z/VM\n");
719 return -EPERM;
720 }
721 return -EIO;
722 }
723 return 0;
724 }
725
726 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
727 {
728 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
729 dev_get_drvdata(&cdev->dev))->dev);
730 return card;
731 }
732
733 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
734 __u32 len)
735 {
736 struct qeth_card *card;
737
738 card = CARD_FROM_CDEV(channel->ccwdev);
739 QETH_CARD_TEXT(card, 4, "setupccw");
740 if (channel == &card->read)
741 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
742 else
743 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
744 channel->ccw.count = len;
745 channel->ccw.cda = (__u32) __pa(iob);
746 }
747
748 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
749 {
750 __u8 index;
751
752 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
753 index = channel->io_buf_no;
754 do {
755 if (channel->iob[index].state == BUF_STATE_FREE) {
756 channel->iob[index].state = BUF_STATE_LOCKED;
757 channel->io_buf_no = (channel->io_buf_no + 1) %
758 QETH_CMD_BUFFER_NO;
759 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
760 return channel->iob + index;
761 }
762 index = (index + 1) % QETH_CMD_BUFFER_NO;
763 } while (index != channel->io_buf_no);
764
765 return NULL;
766 }
767
768 void qeth_release_buffer(struct qeth_channel *channel,
769 struct qeth_cmd_buffer *iob)
770 {
771 unsigned long flags;
772
773 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
774 spin_lock_irqsave(&channel->iob_lock, flags);
775 memset(iob->data, 0, QETH_BUFSIZE);
776 iob->state = BUF_STATE_FREE;
777 iob->callback = qeth_send_control_data_cb;
778 iob->rc = 0;
779 spin_unlock_irqrestore(&channel->iob_lock, flags);
780 wake_up(&channel->wait_q);
781 }
782 EXPORT_SYMBOL_GPL(qeth_release_buffer);
783
784 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
785 {
786 struct qeth_cmd_buffer *buffer = NULL;
787 unsigned long flags;
788
789 spin_lock_irqsave(&channel->iob_lock, flags);
790 buffer = __qeth_get_buffer(channel);
791 spin_unlock_irqrestore(&channel->iob_lock, flags);
792 return buffer;
793 }
794
795 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
796 {
797 struct qeth_cmd_buffer *buffer;
798 wait_event(channel->wait_q,
799 ((buffer = qeth_get_buffer(channel)) != NULL));
800 return buffer;
801 }
802 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
803
804 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
805 {
806 int cnt;
807
808 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
809 qeth_release_buffer(channel, &channel->iob[cnt]);
810 channel->buf_no = 0;
811 channel->io_buf_no = 0;
812 }
813 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
814
815 static void qeth_send_control_data_cb(struct qeth_channel *channel,
816 struct qeth_cmd_buffer *iob)
817 {
818 struct qeth_card *card;
819 struct qeth_reply *reply, *r;
820 struct qeth_ipa_cmd *cmd;
821 unsigned long flags;
822 int keep_reply;
823 int rc = 0;
824
825 card = CARD_FROM_CDEV(channel->ccwdev);
826 QETH_CARD_TEXT(card, 4, "sndctlcb");
827 rc = qeth_check_idx_response(card, iob->data);
828 switch (rc) {
829 case 0:
830 break;
831 case -EIO:
832 qeth_clear_ipacmd_list(card);
833 qeth_schedule_recovery(card);
834 /* fall through */
835 default:
836 goto out;
837 }
838
839 cmd = qeth_check_ipa_data(card, iob);
840 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
841 goto out;
842 /*in case of OSN : check if cmd is set */
843 if (card->info.type == QETH_CARD_TYPE_OSN &&
844 cmd &&
845 cmd->hdr.command != IPA_CMD_STARTLAN &&
846 card->osn_info.assist_cb != NULL) {
847 card->osn_info.assist_cb(card->dev, cmd);
848 goto out;
849 }
850
851 spin_lock_irqsave(&card->lock, flags);
852 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
853 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
854 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
855 qeth_get_reply(reply);
856 list_del_init(&reply->list);
857 spin_unlock_irqrestore(&card->lock, flags);
858 keep_reply = 0;
859 if (reply->callback != NULL) {
860 if (cmd) {
861 reply->offset = (__u16)((char *)cmd -
862 (char *)iob->data);
863 keep_reply = reply->callback(card,
864 reply,
865 (unsigned long)cmd);
866 } else
867 keep_reply = reply->callback(card,
868 reply,
869 (unsigned long)iob);
870 }
871 if (cmd)
872 reply->rc = (u16) cmd->hdr.return_code;
873 else if (iob->rc)
874 reply->rc = iob->rc;
875 if (keep_reply) {
876 spin_lock_irqsave(&card->lock, flags);
877 list_add_tail(&reply->list,
878 &card->cmd_waiter_list);
879 spin_unlock_irqrestore(&card->lock, flags);
880 } else {
881 atomic_inc(&reply->received);
882 wake_up(&reply->wait_q);
883 }
884 qeth_put_reply(reply);
885 goto out;
886 }
887 }
888 spin_unlock_irqrestore(&card->lock, flags);
889 out:
890 memcpy(&card->seqno.pdu_hdr_ack,
891 QETH_PDU_HEADER_SEQ_NO(iob->data),
892 QETH_SEQ_NO_LENGTH);
893 qeth_release_buffer(channel, iob);
894 }
895
896 static int qeth_setup_channel(struct qeth_channel *channel)
897 {
898 int cnt;
899
900 QETH_DBF_TEXT(SETUP, 2, "setupch");
901 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
902 channel->iob[cnt].data =
903 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
904 if (channel->iob[cnt].data == NULL)
905 break;
906 channel->iob[cnt].state = BUF_STATE_FREE;
907 channel->iob[cnt].channel = channel;
908 channel->iob[cnt].callback = qeth_send_control_data_cb;
909 channel->iob[cnt].rc = 0;
910 }
911 if (cnt < QETH_CMD_BUFFER_NO) {
912 while (cnt-- > 0)
913 kfree(channel->iob[cnt].data);
914 return -ENOMEM;
915 }
916 channel->buf_no = 0;
917 channel->io_buf_no = 0;
918 atomic_set(&channel->irq_pending, 0);
919 spin_lock_init(&channel->iob_lock);
920
921 init_waitqueue_head(&channel->wait_q);
922 return 0;
923 }
924
925 static int qeth_set_thread_start_bit(struct qeth_card *card,
926 unsigned long thread)
927 {
928 unsigned long flags;
929
930 spin_lock_irqsave(&card->thread_mask_lock, flags);
931 if (!(card->thread_allowed_mask & thread) ||
932 (card->thread_start_mask & thread)) {
933 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
934 return -EPERM;
935 }
936 card->thread_start_mask |= thread;
937 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
938 return 0;
939 }
940
941 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
942 {
943 unsigned long flags;
944
945 spin_lock_irqsave(&card->thread_mask_lock, flags);
946 card->thread_start_mask &= ~thread;
947 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
948 wake_up(&card->wait_q);
949 }
950 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
951
952 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
953 {
954 unsigned long flags;
955
956 spin_lock_irqsave(&card->thread_mask_lock, flags);
957 card->thread_running_mask &= ~thread;
958 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
959 wake_up(&card->wait_q);
960 }
961 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
962
963 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
964 {
965 unsigned long flags;
966 int rc = 0;
967
968 spin_lock_irqsave(&card->thread_mask_lock, flags);
969 if (card->thread_start_mask & thread) {
970 if ((card->thread_allowed_mask & thread) &&
971 !(card->thread_running_mask & thread)) {
972 rc = 1;
973 card->thread_start_mask &= ~thread;
974 card->thread_running_mask |= thread;
975 } else
976 rc = -EPERM;
977 }
978 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
979 return rc;
980 }
981
982 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
983 {
984 int rc = 0;
985
986 wait_event(card->wait_q,
987 (rc = __qeth_do_run_thread(card, thread)) >= 0);
988 return rc;
989 }
990 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
991
992 void qeth_schedule_recovery(struct qeth_card *card)
993 {
994 QETH_CARD_TEXT(card, 2, "startrec");
995 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
996 schedule_work(&card->kernel_thread_starter);
997 }
998 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
999
1000 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
1001 {
1002 int dstat, cstat;
1003 char *sense;
1004 struct qeth_card *card;
1005
1006 sense = (char *) irb->ecw;
1007 cstat = irb->scsw.cmd.cstat;
1008 dstat = irb->scsw.cmd.dstat;
1009 card = CARD_FROM_CDEV(cdev);
1010
1011 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1012 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1013 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1014 QETH_CARD_TEXT(card, 2, "CGENCHK");
1015 dev_warn(&cdev->dev, "The qeth device driver "
1016 "failed to recover an error on the device\n");
1017 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1018 dev_name(&cdev->dev), dstat, cstat);
1019 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1020 16, 1, irb, 64, 1);
1021 return 1;
1022 }
1023
1024 if (dstat & DEV_STAT_UNIT_CHECK) {
1025 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1026 SENSE_RESETTING_EVENT_FLAG) {
1027 QETH_CARD_TEXT(card, 2, "REVIND");
1028 return 1;
1029 }
1030 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1031 SENSE_COMMAND_REJECT_FLAG) {
1032 QETH_CARD_TEXT(card, 2, "CMDREJi");
1033 return 1;
1034 }
1035 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1036 QETH_CARD_TEXT(card, 2, "AFFE");
1037 return 1;
1038 }
1039 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1040 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1041 return 0;
1042 }
1043 QETH_CARD_TEXT(card, 2, "DGENCHK");
1044 return 1;
1045 }
1046 return 0;
1047 }
1048
1049 static long __qeth_check_irb_error(struct ccw_device *cdev,
1050 unsigned long intparm, struct irb *irb)
1051 {
1052 struct qeth_card *card;
1053
1054 card = CARD_FROM_CDEV(cdev);
1055
1056 if (!card || !IS_ERR(irb))
1057 return 0;
1058
1059 switch (PTR_ERR(irb)) {
1060 case -EIO:
1061 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1062 dev_name(&cdev->dev));
1063 QETH_CARD_TEXT(card, 2, "ckirberr");
1064 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1065 break;
1066 case -ETIMEDOUT:
1067 dev_warn(&cdev->dev, "A hardware operation timed out"
1068 " on the device\n");
1069 QETH_CARD_TEXT(card, 2, "ckirberr");
1070 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1071 if (intparm == QETH_RCD_PARM) {
1072 if (card->data.ccwdev == cdev) {
1073 card->data.state = CH_STATE_DOWN;
1074 wake_up(&card->wait_q);
1075 }
1076 }
1077 break;
1078 default:
1079 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1080 dev_name(&cdev->dev), PTR_ERR(irb));
1081 QETH_CARD_TEXT(card, 2, "ckirberr");
1082 QETH_CARD_TEXT(card, 2, " rc???");
1083 }
1084 return PTR_ERR(irb);
1085 }
1086
1087 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1088 struct irb *irb)
1089 {
1090 int rc;
1091 int cstat, dstat;
1092 struct qeth_cmd_buffer *buffer;
1093 struct qeth_channel *channel;
1094 struct qeth_card *card;
1095 struct qeth_cmd_buffer *iob;
1096 __u8 index;
1097
1098 if (__qeth_check_irb_error(cdev, intparm, irb))
1099 return;
1100 cstat = irb->scsw.cmd.cstat;
1101 dstat = irb->scsw.cmd.dstat;
1102
1103 card = CARD_FROM_CDEV(cdev);
1104 if (!card)
1105 return;
1106
1107 QETH_CARD_TEXT(card, 5, "irq");
1108
1109 if (card->read.ccwdev == cdev) {
1110 channel = &card->read;
1111 QETH_CARD_TEXT(card, 5, "read");
1112 } else if (card->write.ccwdev == cdev) {
1113 channel = &card->write;
1114 QETH_CARD_TEXT(card, 5, "write");
1115 } else {
1116 channel = &card->data;
1117 QETH_CARD_TEXT(card, 5, "data");
1118 }
1119 atomic_set(&channel->irq_pending, 0);
1120
1121 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1122 channel->state = CH_STATE_STOPPED;
1123
1124 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1125 channel->state = CH_STATE_HALTED;
1126
1127 /*let's wake up immediately on data channel*/
1128 if ((channel == &card->data) && (intparm != 0) &&
1129 (intparm != QETH_RCD_PARM))
1130 goto out;
1131
1132 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1133 QETH_CARD_TEXT(card, 6, "clrchpar");
1134 /* we don't have to handle this further */
1135 intparm = 0;
1136 }
1137 if (intparm == QETH_HALT_CHANNEL_PARM) {
1138 QETH_CARD_TEXT(card, 6, "hltchpar");
1139 /* we don't have to handle this further */
1140 intparm = 0;
1141 }
1142 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1143 (dstat & DEV_STAT_UNIT_CHECK) ||
1144 (cstat)) {
1145 if (irb->esw.esw0.erw.cons) {
1146 dev_warn(&channel->ccwdev->dev,
1147 "The qeth device driver failed to recover "
1148 "an error on the device\n");
1149 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1150 "0x%X dstat 0x%X\n",
1151 dev_name(&channel->ccwdev->dev), cstat, dstat);
1152 print_hex_dump(KERN_WARNING, "qeth: irb ",
1153 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1154 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1155 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1156 }
1157 if (intparm == QETH_RCD_PARM) {
1158 channel->state = CH_STATE_DOWN;
1159 goto out;
1160 }
1161 rc = qeth_get_problem(cdev, irb);
1162 if (rc) {
1163 qeth_clear_ipacmd_list(card);
1164 qeth_schedule_recovery(card);
1165 goto out;
1166 }
1167 }
1168
1169 if (intparm == QETH_RCD_PARM) {
1170 channel->state = CH_STATE_RCD_DONE;
1171 goto out;
1172 }
1173 if (intparm) {
1174 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1175 buffer->state = BUF_STATE_PROCESSED;
1176 }
1177 if (channel == &card->data)
1178 return;
1179 if (channel == &card->read &&
1180 channel->state == CH_STATE_UP)
1181 qeth_issue_next_read(card);
1182
1183 iob = channel->iob;
1184 index = channel->buf_no;
1185 while (iob[index].state == BUF_STATE_PROCESSED) {
1186 if (iob[index].callback != NULL)
1187 iob[index].callback(channel, iob + index);
1188
1189 index = (index + 1) % QETH_CMD_BUFFER_NO;
1190 }
1191 channel->buf_no = index;
1192 out:
1193 wake_up(&card->wait_q);
1194 return;
1195 }
1196
1197 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1198 struct qeth_qdio_out_buffer *buf,
1199 enum iucv_tx_notify notification)
1200 {
1201 struct sk_buff *skb;
1202
1203 if (skb_queue_empty(&buf->skb_list))
1204 goto out;
1205 skb = skb_peek(&buf->skb_list);
1206 while (skb) {
1207 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1208 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1209 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1210 if (skb->sk) {
1211 struct iucv_sock *iucv = iucv_sk(skb->sk);
1212 iucv->sk_txnotify(skb, notification);
1213 }
1214 }
1215 if (skb_queue_is_last(&buf->skb_list, skb))
1216 skb = NULL;
1217 else
1218 skb = skb_queue_next(&buf->skb_list, skb);
1219 }
1220 out:
1221 return;
1222 }
1223
1224 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1225 {
1226 struct sk_buff *skb;
1227 struct iucv_sock *iucv;
1228 int notify_general_error = 0;
1229
1230 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1231 notify_general_error = 1;
1232
1233 /* release may never happen from within CQ tasklet scope */
1234 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1235
1236 skb = skb_dequeue(&buf->skb_list);
1237 while (skb) {
1238 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1239 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1240 if (notify_general_error &&
1241 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1242 if (skb->sk) {
1243 iucv = iucv_sk(skb->sk);
1244 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1245 }
1246 }
1247 refcount_dec(&skb->users);
1248 dev_kfree_skb_any(skb);
1249 skb = skb_dequeue(&buf->skb_list);
1250 }
1251 }
1252
1253 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1254 struct qeth_qdio_out_buffer *buf,
1255 enum qeth_qdio_buffer_states newbufstate)
1256 {
1257 int i;
1258
1259 /* is PCI flag set on buffer? */
1260 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1261 atomic_dec(&queue->set_pci_flags_count);
1262
1263 if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1264 qeth_release_skbs(buf);
1265 }
1266 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1267 if (buf->buffer->element[i].addr && buf->is_header[i])
1268 kmem_cache_free(qeth_core_header_cache,
1269 buf->buffer->element[i].addr);
1270 buf->is_header[i] = 0;
1271 buf->buffer->element[i].length = 0;
1272 buf->buffer->element[i].addr = NULL;
1273 buf->buffer->element[i].eflags = 0;
1274 buf->buffer->element[i].sflags = 0;
1275 }
1276 buf->buffer->element[15].eflags = 0;
1277 buf->buffer->element[15].sflags = 0;
1278 buf->next_element_to_fill = 0;
1279 atomic_set(&buf->state, newbufstate);
1280 }
1281
1282 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1283 {
1284 int j;
1285
1286 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1287 if (!q->bufs[j])
1288 continue;
1289 qeth_cleanup_handled_pending(q, j, 1);
1290 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1291 if (free) {
1292 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1293 q->bufs[j] = NULL;
1294 }
1295 }
1296 }
1297
1298 void qeth_clear_qdio_buffers(struct qeth_card *card)
1299 {
1300 int i;
1301
1302 QETH_CARD_TEXT(card, 2, "clearqdbf");
1303 /* clear outbound buffers to free skbs */
1304 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1305 if (card->qdio.out_qs[i]) {
1306 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1307 }
1308 }
1309 }
1310 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1311
1312 static void qeth_free_buffer_pool(struct qeth_card *card)
1313 {
1314 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1315 int i = 0;
1316 list_for_each_entry_safe(pool_entry, tmp,
1317 &card->qdio.init_pool.entry_list, init_list){
1318 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1319 free_page((unsigned long)pool_entry->elements[i]);
1320 list_del(&pool_entry->init_list);
1321 kfree(pool_entry);
1322 }
1323 }
1324
1325 static void qeth_clean_channel(struct qeth_channel *channel)
1326 {
1327 int cnt;
1328
1329 QETH_DBF_TEXT(SETUP, 2, "freech");
1330 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1331 kfree(channel->iob[cnt].data);
1332 }
1333
1334 static void qeth_set_single_write_queues(struct qeth_card *card)
1335 {
1336 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1337 (card->qdio.no_out_queues == 4))
1338 qeth_free_qdio_buffers(card);
1339
1340 card->qdio.no_out_queues = 1;
1341 if (card->qdio.default_out_queue != 0)
1342 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1343
1344 card->qdio.default_out_queue = 0;
1345 }
1346
1347 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1348 {
1349 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1350 (card->qdio.no_out_queues == 1)) {
1351 qeth_free_qdio_buffers(card);
1352 card->qdio.default_out_queue = 2;
1353 }
1354 card->qdio.no_out_queues = 4;
1355 }
1356
1357 static void qeth_update_from_chp_desc(struct qeth_card *card)
1358 {
1359 struct ccw_device *ccwdev;
1360 struct channel_path_desc *chp_dsc;
1361
1362 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1363
1364 ccwdev = card->data.ccwdev;
1365 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1366 if (!chp_dsc)
1367 goto out;
1368
1369 card->info.func_level = 0x4100 + chp_dsc->desc;
1370 if (card->info.type == QETH_CARD_TYPE_IQD)
1371 goto out;
1372
1373 /* CHPP field bit 6 == 1 -> single queue */
1374 if ((chp_dsc->chpp & 0x02) == 0x02)
1375 qeth_set_single_write_queues(card);
1376 else
1377 qeth_set_multiple_write_queues(card);
1378 out:
1379 kfree(chp_dsc);
1380 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1381 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1382 }
1383
1384 static void qeth_init_qdio_info(struct qeth_card *card)
1385 {
1386 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1387 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1388 /* inbound */
1389 card->qdio.no_in_queues = 1;
1390 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1391 if (card->info.type == QETH_CARD_TYPE_IQD)
1392 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1393 else
1394 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1395 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1396 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1397 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1398 }
1399
1400 static void qeth_set_intial_options(struct qeth_card *card)
1401 {
1402 card->options.route4.type = NO_ROUTER;
1403 card->options.route6.type = NO_ROUTER;
1404 card->options.fake_broadcast = 0;
1405 card->options.performance_stats = 0;
1406 card->options.rx_sg_cb = QETH_RX_SG_CB;
1407 card->options.isolation = ISOLATION_MODE_NONE;
1408 card->options.cq = QETH_CQ_DISABLED;
1409 }
1410
1411 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1412 {
1413 unsigned long flags;
1414 int rc = 0;
1415
1416 spin_lock_irqsave(&card->thread_mask_lock, flags);
1417 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1418 (u8) card->thread_start_mask,
1419 (u8) card->thread_allowed_mask,
1420 (u8) card->thread_running_mask);
1421 rc = (card->thread_start_mask & thread);
1422 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1423 return rc;
1424 }
1425
1426 static void qeth_start_kernel_thread(struct work_struct *work)
1427 {
1428 struct task_struct *ts;
1429 struct qeth_card *card = container_of(work, struct qeth_card,
1430 kernel_thread_starter);
1431 QETH_CARD_TEXT(card , 2, "strthrd");
1432
1433 if (card->read.state != CH_STATE_UP &&
1434 card->write.state != CH_STATE_UP)
1435 return;
1436 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1437 ts = kthread_run(card->discipline->recover, (void *)card,
1438 "qeth_recover");
1439 if (IS_ERR(ts)) {
1440 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1441 qeth_clear_thread_running_bit(card,
1442 QETH_RECOVER_THREAD);
1443 }
1444 }
1445 }
1446
1447 static void qeth_buffer_reclaim_work(struct work_struct *);
1448 static int qeth_setup_card(struct qeth_card *card)
1449 {
1450
1451 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1452 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1453
1454 card->read.state = CH_STATE_DOWN;
1455 card->write.state = CH_STATE_DOWN;
1456 card->data.state = CH_STATE_DOWN;
1457 card->state = CARD_STATE_DOWN;
1458 card->lan_online = 0;
1459 card->read_or_write_problem = 0;
1460 card->dev = NULL;
1461 spin_lock_init(&card->vlanlock);
1462 spin_lock_init(&card->mclock);
1463 spin_lock_init(&card->lock);
1464 spin_lock_init(&card->ip_lock);
1465 spin_lock_init(&card->thread_mask_lock);
1466 mutex_init(&card->conf_mutex);
1467 mutex_init(&card->discipline_mutex);
1468 card->thread_start_mask = 0;
1469 card->thread_allowed_mask = 0;
1470 card->thread_running_mask = 0;
1471 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1472 INIT_LIST_HEAD(&card->cmd_waiter_list);
1473 init_waitqueue_head(&card->wait_q);
1474 /* initial options */
1475 qeth_set_intial_options(card);
1476 /* IP address takeover */
1477 INIT_LIST_HEAD(&card->ipato.entries);
1478 card->ipato.enabled = 0;
1479 card->ipato.invert4 = 0;
1480 card->ipato.invert6 = 0;
1481 /* init QDIO stuff */
1482 qeth_init_qdio_info(card);
1483 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1484 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1485 return 0;
1486 }
1487
1488 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1489 {
1490 struct qeth_card *card = container_of(slr, struct qeth_card,
1491 qeth_service_level);
1492 if (card->info.mcl_level[0])
1493 seq_printf(m, "qeth: %s firmware level %s\n",
1494 CARD_BUS_ID(card), card->info.mcl_level);
1495 }
1496
1497 static struct qeth_card *qeth_alloc_card(void)
1498 {
1499 struct qeth_card *card;
1500
1501 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1502 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1503 if (!card)
1504 goto out;
1505 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1506 if (qeth_setup_channel(&card->read))
1507 goto out_ip;
1508 if (qeth_setup_channel(&card->write))
1509 goto out_channel;
1510 card->options.layer2 = -1;
1511 card->qeth_service_level.seq_print = qeth_core_sl_print;
1512 register_service_level(&card->qeth_service_level);
1513 return card;
1514
1515 out_channel:
1516 qeth_clean_channel(&card->read);
1517 out_ip:
1518 kfree(card);
1519 out:
1520 return NULL;
1521 }
1522
1523 static void qeth_determine_card_type(struct qeth_card *card)
1524 {
1525 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1526
1527 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1528 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1529 card->info.type = CARD_RDEV(card)->id.driver_info;
1530 card->qdio.no_out_queues = QETH_MAX_QUEUES;
1531 if (card->info.type == QETH_CARD_TYPE_IQD)
1532 card->info.is_multicast_different = 0x0103;
1533 qeth_update_from_chp_desc(card);
1534 }
1535
1536 static int qeth_clear_channel(struct qeth_channel *channel)
1537 {
1538 unsigned long flags;
1539 struct qeth_card *card;
1540 int rc;
1541
1542 card = CARD_FROM_CDEV(channel->ccwdev);
1543 QETH_CARD_TEXT(card, 3, "clearch");
1544 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1545 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1546 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1547
1548 if (rc)
1549 return rc;
1550 rc = wait_event_interruptible_timeout(card->wait_q,
1551 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1552 if (rc == -ERESTARTSYS)
1553 return rc;
1554 if (channel->state != CH_STATE_STOPPED)
1555 return -ETIME;
1556 channel->state = CH_STATE_DOWN;
1557 return 0;
1558 }
1559
1560 static int qeth_halt_channel(struct qeth_channel *channel)
1561 {
1562 unsigned long flags;
1563 struct qeth_card *card;
1564 int rc;
1565
1566 card = CARD_FROM_CDEV(channel->ccwdev);
1567 QETH_CARD_TEXT(card, 3, "haltch");
1568 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1569 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1570 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1571
1572 if (rc)
1573 return rc;
1574 rc = wait_event_interruptible_timeout(card->wait_q,
1575 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1576 if (rc == -ERESTARTSYS)
1577 return rc;
1578 if (channel->state != CH_STATE_HALTED)
1579 return -ETIME;
1580 return 0;
1581 }
1582
1583 static int qeth_halt_channels(struct qeth_card *card)
1584 {
1585 int rc1 = 0, rc2 = 0, rc3 = 0;
1586
1587 QETH_CARD_TEXT(card, 3, "haltchs");
1588 rc1 = qeth_halt_channel(&card->read);
1589 rc2 = qeth_halt_channel(&card->write);
1590 rc3 = qeth_halt_channel(&card->data);
1591 if (rc1)
1592 return rc1;
1593 if (rc2)
1594 return rc2;
1595 return rc3;
1596 }
1597
1598 static int qeth_clear_channels(struct qeth_card *card)
1599 {
1600 int rc1 = 0, rc2 = 0, rc3 = 0;
1601
1602 QETH_CARD_TEXT(card, 3, "clearchs");
1603 rc1 = qeth_clear_channel(&card->read);
1604 rc2 = qeth_clear_channel(&card->write);
1605 rc3 = qeth_clear_channel(&card->data);
1606 if (rc1)
1607 return rc1;
1608 if (rc2)
1609 return rc2;
1610 return rc3;
1611 }
1612
1613 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1614 {
1615 int rc = 0;
1616
1617 QETH_CARD_TEXT(card, 3, "clhacrd");
1618
1619 if (halt)
1620 rc = qeth_halt_channels(card);
1621 if (rc)
1622 return rc;
1623 return qeth_clear_channels(card);
1624 }
1625
1626 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1627 {
1628 int rc = 0;
1629
1630 QETH_CARD_TEXT(card, 3, "qdioclr");
1631 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1632 QETH_QDIO_CLEANING)) {
1633 case QETH_QDIO_ESTABLISHED:
1634 if (card->info.type == QETH_CARD_TYPE_IQD)
1635 rc = qdio_shutdown(CARD_DDEV(card),
1636 QDIO_FLAG_CLEANUP_USING_HALT);
1637 else
1638 rc = qdio_shutdown(CARD_DDEV(card),
1639 QDIO_FLAG_CLEANUP_USING_CLEAR);
1640 if (rc)
1641 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1642 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1643 break;
1644 case QETH_QDIO_CLEANING:
1645 return rc;
1646 default:
1647 break;
1648 }
1649 rc = qeth_clear_halt_card(card, use_halt);
1650 if (rc)
1651 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1652 card->state = CARD_STATE_DOWN;
1653 return rc;
1654 }
1655 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1656
1657 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1658 int *length)
1659 {
1660 struct ciw *ciw;
1661 char *rcd_buf;
1662 int ret;
1663 struct qeth_channel *channel = &card->data;
1664 unsigned long flags;
1665
1666 /*
1667 * scan for RCD command in extended SenseID data
1668 */
1669 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1670 if (!ciw || ciw->cmd == 0)
1671 return -EOPNOTSUPP;
1672 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1673 if (!rcd_buf)
1674 return -ENOMEM;
1675
1676 channel->ccw.cmd_code = ciw->cmd;
1677 channel->ccw.cda = (__u32) __pa(rcd_buf);
1678 channel->ccw.count = ciw->count;
1679 channel->ccw.flags = CCW_FLAG_SLI;
1680 channel->state = CH_STATE_RCD;
1681 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1682 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1683 QETH_RCD_PARM, LPM_ANYPATH, 0,
1684 QETH_RCD_TIMEOUT);
1685 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1686 if (!ret)
1687 wait_event(card->wait_q,
1688 (channel->state == CH_STATE_RCD_DONE ||
1689 channel->state == CH_STATE_DOWN));
1690 if (channel->state == CH_STATE_DOWN)
1691 ret = -EIO;
1692 else
1693 channel->state = CH_STATE_DOWN;
1694 if (ret) {
1695 kfree(rcd_buf);
1696 *buffer = NULL;
1697 *length = 0;
1698 } else {
1699 *length = ciw->count;
1700 *buffer = rcd_buf;
1701 }
1702 return ret;
1703 }
1704
1705 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1706 {
1707 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1708 card->info.chpid = prcd[30];
1709 card->info.unit_addr2 = prcd[31];
1710 card->info.cula = prcd[63];
1711 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1712 (prcd[0x11] == _ascebc['M']));
1713 }
1714
1715 /* Determine whether the device requires a specific layer discipline */
1716 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1717 {
1718 if (card->info.type == QETH_CARD_TYPE_OSM ||
1719 card->info.type == QETH_CARD_TYPE_OSN) {
1720 QETH_DBF_TEXT(SETUP, 3, "force l2");
1721 return QETH_DISCIPLINE_LAYER2;
1722 }
1723
1724 /* virtual HiperSocket is L3 only: */
1725 if (card->info.guestlan && card->info.type == QETH_CARD_TYPE_IQD) {
1726 QETH_DBF_TEXT(SETUP, 3, "force l3");
1727 return QETH_DISCIPLINE_LAYER3;
1728 }
1729
1730 QETH_DBF_TEXT(SETUP, 3, "force no");
1731 return QETH_DISCIPLINE_UNDETERMINED;
1732 }
1733
1734 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1735 {
1736 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1737
1738 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1739 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1740 card->info.blkt.time_total = 0;
1741 card->info.blkt.inter_packet = 0;
1742 card->info.blkt.inter_packet_jumbo = 0;
1743 } else {
1744 card->info.blkt.time_total = 250;
1745 card->info.blkt.inter_packet = 5;
1746 card->info.blkt.inter_packet_jumbo = 15;
1747 }
1748 }
1749
1750 static void qeth_init_tokens(struct qeth_card *card)
1751 {
1752 card->token.issuer_rm_w = 0x00010103UL;
1753 card->token.cm_filter_w = 0x00010108UL;
1754 card->token.cm_connection_w = 0x0001010aUL;
1755 card->token.ulp_filter_w = 0x0001010bUL;
1756 card->token.ulp_connection_w = 0x0001010dUL;
1757 }
1758
1759 static void qeth_init_func_level(struct qeth_card *card)
1760 {
1761 switch (card->info.type) {
1762 case QETH_CARD_TYPE_IQD:
1763 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1764 break;
1765 case QETH_CARD_TYPE_OSD:
1766 case QETH_CARD_TYPE_OSN:
1767 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1768 break;
1769 default:
1770 break;
1771 }
1772 }
1773
1774 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1775 void (*idx_reply_cb)(struct qeth_channel *,
1776 struct qeth_cmd_buffer *))
1777 {
1778 struct qeth_cmd_buffer *iob;
1779 unsigned long flags;
1780 int rc;
1781 struct qeth_card *card;
1782
1783 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1784 card = CARD_FROM_CDEV(channel->ccwdev);
1785 iob = qeth_get_buffer(channel);
1786 if (!iob)
1787 return -ENOMEM;
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 if (!iob)
1839 return -ENOMEM;
1840 iob->callback = idx_reply_cb;
1841 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1842 channel->ccw.count = IDX_ACTIVATE_SIZE;
1843 channel->ccw.cda = (__u32) __pa(iob->data);
1844 if (channel == &card->write) {
1845 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1846 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1847 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1848 card->seqno.trans_hdr++;
1849 } else {
1850 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1851 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1852 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1853 }
1854 tmp = ((__u8)card->info.portno) | 0x80;
1855 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1856 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1857 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1858 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1859 &card->info.func_level, sizeof(__u16));
1860 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1861 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1862 temp = (card->info.cula << 8) + card->info.unit_addr2;
1863 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1864
1865 wait_event(card->wait_q,
1866 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1867 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1868 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1869 rc = ccw_device_start(channel->ccwdev,
1870 &channel->ccw, (addr_t) iob, 0, 0);
1871 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1872
1873 if (rc) {
1874 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1875 rc);
1876 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1877 atomic_set(&channel->irq_pending, 0);
1878 wake_up(&card->wait_q);
1879 return rc;
1880 }
1881 rc = wait_event_interruptible_timeout(card->wait_q,
1882 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1883 if (rc == -ERESTARTSYS)
1884 return rc;
1885 if (channel->state != CH_STATE_ACTIVATING) {
1886 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1887 " failed to recover an error on the device\n");
1888 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1889 dev_name(&channel->ccwdev->dev));
1890 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1891 qeth_clear_cmd_buffers(channel);
1892 return -ETIME;
1893 }
1894 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1895 }
1896
1897 static int qeth_peer_func_level(int level)
1898 {
1899 if ((level & 0xff) == 8)
1900 return (level & 0xff) + 0x400;
1901 if (((level >> 8) & 3) == 1)
1902 return (level & 0xff) + 0x200;
1903 return level;
1904 }
1905
1906 static void qeth_idx_write_cb(struct qeth_channel *channel,
1907 struct qeth_cmd_buffer *iob)
1908 {
1909 struct qeth_card *card;
1910 __u16 temp;
1911
1912 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1913
1914 if (channel->state == CH_STATE_DOWN) {
1915 channel->state = CH_STATE_ACTIVATING;
1916 goto out;
1917 }
1918 card = CARD_FROM_CDEV(channel->ccwdev);
1919
1920 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1921 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1922 dev_err(&card->write.ccwdev->dev,
1923 "The adapter is used exclusively by another "
1924 "host\n");
1925 else
1926 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1927 " negative reply\n",
1928 dev_name(&card->write.ccwdev->dev));
1929 goto out;
1930 }
1931 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1932 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1933 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1934 "function level mismatch (sent: 0x%x, received: "
1935 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1936 card->info.func_level, temp);
1937 goto out;
1938 }
1939 channel->state = CH_STATE_UP;
1940 out:
1941 qeth_release_buffer(channel, iob);
1942 }
1943
1944 static void qeth_idx_read_cb(struct qeth_channel *channel,
1945 struct qeth_cmd_buffer *iob)
1946 {
1947 struct qeth_card *card;
1948 __u16 temp;
1949
1950 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1951 if (channel->state == CH_STATE_DOWN) {
1952 channel->state = CH_STATE_ACTIVATING;
1953 goto out;
1954 }
1955
1956 card = CARD_FROM_CDEV(channel->ccwdev);
1957 if (qeth_check_idx_response(card, iob->data))
1958 goto out;
1959
1960 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1961 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1962 case QETH_IDX_ACT_ERR_EXCL:
1963 dev_err(&card->write.ccwdev->dev,
1964 "The adapter is used exclusively by another "
1965 "host\n");
1966 break;
1967 case QETH_IDX_ACT_ERR_AUTH:
1968 case QETH_IDX_ACT_ERR_AUTH_USER:
1969 dev_err(&card->read.ccwdev->dev,
1970 "Setting the device online failed because of "
1971 "insufficient authorization\n");
1972 break;
1973 default:
1974 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1975 " negative reply\n",
1976 dev_name(&card->read.ccwdev->dev));
1977 }
1978 QETH_CARD_TEXT_(card, 2, "idxread%c",
1979 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1980 goto out;
1981 }
1982
1983 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1984 if (temp != qeth_peer_func_level(card->info.func_level)) {
1985 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1986 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1987 dev_name(&card->read.ccwdev->dev),
1988 card->info.func_level, temp);
1989 goto out;
1990 }
1991 memcpy(&card->token.issuer_rm_r,
1992 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1993 QETH_MPC_TOKEN_LENGTH);
1994 memcpy(&card->info.mcl_level[0],
1995 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1996 channel->state = CH_STATE_UP;
1997 out:
1998 qeth_release_buffer(channel, iob);
1999 }
2000
2001 void qeth_prepare_control_data(struct qeth_card *card, int len,
2002 struct qeth_cmd_buffer *iob)
2003 {
2004 qeth_setup_ccw(&card->write, iob->data, len);
2005 iob->callback = qeth_release_buffer;
2006
2007 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2008 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2009 card->seqno.trans_hdr++;
2010 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2011 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2012 card->seqno.pdu_hdr++;
2013 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2014 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2015 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2016 }
2017 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2018
2019 /**
2020 * qeth_send_control_data() - send control command to the card
2021 * @card: qeth_card structure pointer
2022 * @len: size of the command buffer
2023 * @iob: qeth_cmd_buffer pointer
2024 * @reply_cb: callback function pointer
2025 * @cb_card: pointer to the qeth_card structure
2026 * @cb_reply: pointer to the qeth_reply structure
2027 * @cb_cmd: pointer to the original iob for non-IPA
2028 * commands, or to the qeth_ipa_cmd structure
2029 * for the IPA commands.
2030 * @reply_param: private pointer passed to the callback
2031 *
2032 * Returns the value of the `return_code' field of the response
2033 * block returned from the hardware, or other error indication.
2034 * Value of zero indicates successful execution of the command.
2035 *
2036 * Callback function gets called one or more times, with cb_cmd
2037 * pointing to the response returned by the hardware. Callback
2038 * function must return non-zero if more reply blocks are expected,
2039 * and zero if the last or only reply block is received. Callback
2040 * function can get the value of the reply_param pointer from the
2041 * field 'param' of the structure qeth_reply.
2042 */
2043
2044 int qeth_send_control_data(struct qeth_card *card, int len,
2045 struct qeth_cmd_buffer *iob,
2046 int (*reply_cb)(struct qeth_card *cb_card,
2047 struct qeth_reply *cb_reply,
2048 unsigned long cb_cmd),
2049 void *reply_param)
2050 {
2051 int rc;
2052 unsigned long flags;
2053 struct qeth_reply *reply = NULL;
2054 unsigned long timeout, event_timeout;
2055 struct qeth_ipa_cmd *cmd;
2056
2057 QETH_CARD_TEXT(card, 2, "sendctl");
2058
2059 if (card->read_or_write_problem) {
2060 qeth_release_buffer(iob->channel, iob);
2061 return -EIO;
2062 }
2063 reply = qeth_alloc_reply(card);
2064 if (!reply) {
2065 return -ENOMEM;
2066 }
2067 reply->callback = reply_cb;
2068 reply->param = reply_param;
2069 if (card->state == CARD_STATE_DOWN)
2070 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2071 else
2072 reply->seqno = card->seqno.ipa++;
2073 init_waitqueue_head(&reply->wait_q);
2074 spin_lock_irqsave(&card->lock, flags);
2075 list_add_tail(&reply->list, &card->cmd_waiter_list);
2076 spin_unlock_irqrestore(&card->lock, flags);
2077
2078 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2079 qeth_prepare_control_data(card, len, iob);
2080
2081 if (IS_IPA(iob->data))
2082 event_timeout = QETH_IPA_TIMEOUT;
2083 else
2084 event_timeout = QETH_TIMEOUT;
2085 timeout = jiffies + event_timeout;
2086
2087 QETH_CARD_TEXT(card, 6, "noirqpnd");
2088 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2089 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2090 (addr_t) iob, 0, 0);
2091 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2092 if (rc) {
2093 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2094 "ccw_device_start rc = %i\n",
2095 dev_name(&card->write.ccwdev->dev), rc);
2096 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2097 spin_lock_irqsave(&card->lock, flags);
2098 list_del_init(&reply->list);
2099 qeth_put_reply(reply);
2100 spin_unlock_irqrestore(&card->lock, flags);
2101 qeth_release_buffer(iob->channel, iob);
2102 atomic_set(&card->write.irq_pending, 0);
2103 wake_up(&card->wait_q);
2104 return rc;
2105 }
2106
2107 /* we have only one long running ipassist, since we can ensure
2108 process context of this command we can sleep */
2109 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2110 if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2111 (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2112 if (!wait_event_timeout(reply->wait_q,
2113 atomic_read(&reply->received), event_timeout))
2114 goto time_err;
2115 } else {
2116 while (!atomic_read(&reply->received)) {
2117 if (time_after(jiffies, timeout))
2118 goto time_err;
2119 cpu_relax();
2120 }
2121 }
2122
2123 if (reply->rc == -EIO)
2124 goto error;
2125 rc = reply->rc;
2126 qeth_put_reply(reply);
2127 return rc;
2128
2129 time_err:
2130 reply->rc = -ETIME;
2131 spin_lock_irqsave(&reply->card->lock, flags);
2132 list_del_init(&reply->list);
2133 spin_unlock_irqrestore(&reply->card->lock, flags);
2134 atomic_inc(&reply->received);
2135 error:
2136 atomic_set(&card->write.irq_pending, 0);
2137 qeth_release_buffer(iob->channel, iob);
2138 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2139 rc = reply->rc;
2140 qeth_put_reply(reply);
2141 return rc;
2142 }
2143 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2144
2145 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2146 unsigned long data)
2147 {
2148 struct qeth_cmd_buffer *iob;
2149
2150 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2151
2152 iob = (struct qeth_cmd_buffer *) data;
2153 memcpy(&card->token.cm_filter_r,
2154 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2155 QETH_MPC_TOKEN_LENGTH);
2156 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2157 return 0;
2158 }
2159
2160 static int qeth_cm_enable(struct qeth_card *card)
2161 {
2162 int rc;
2163 struct qeth_cmd_buffer *iob;
2164
2165 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2166
2167 iob = qeth_wait_for_buffer(&card->write);
2168 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2169 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2170 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2171 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2172 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2173
2174 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2175 qeth_cm_enable_cb, NULL);
2176 return rc;
2177 }
2178
2179 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2180 unsigned long data)
2181 {
2182
2183 struct qeth_cmd_buffer *iob;
2184
2185 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2186
2187 iob = (struct qeth_cmd_buffer *) data;
2188 memcpy(&card->token.cm_connection_r,
2189 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2190 QETH_MPC_TOKEN_LENGTH);
2191 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2192 return 0;
2193 }
2194
2195 static int qeth_cm_setup(struct qeth_card *card)
2196 {
2197 int rc;
2198 struct qeth_cmd_buffer *iob;
2199
2200 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2201
2202 iob = qeth_wait_for_buffer(&card->write);
2203 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2204 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2205 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2206 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2207 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2208 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2209 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2210 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2211 qeth_cm_setup_cb, NULL);
2212 return rc;
2213
2214 }
2215
2216 static int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2217 {
2218 switch (card->info.type) {
2219 case QETH_CARD_TYPE_IQD:
2220 return card->info.max_mtu;
2221 case QETH_CARD_TYPE_OSD:
2222 case QETH_CARD_TYPE_OSX:
2223 if (!card->options.layer2)
2224 return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */
2225 /* fall through */
2226 default:
2227 return ETH_DATA_LEN;
2228 }
2229 }
2230
2231 static int qeth_get_mtu_outof_framesize(int framesize)
2232 {
2233 switch (framesize) {
2234 case 0x4000:
2235 return 8192;
2236 case 0x6000:
2237 return 16384;
2238 case 0xa000:
2239 return 32768;
2240 case 0xffff:
2241 return 57344;
2242 default:
2243 return 0;
2244 }
2245 }
2246
2247 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2248 {
2249 switch (card->info.type) {
2250 case QETH_CARD_TYPE_OSD:
2251 case QETH_CARD_TYPE_OSM:
2252 case QETH_CARD_TYPE_OSX:
2253 case QETH_CARD_TYPE_IQD:
2254 return ((mtu >= 576) &&
2255 (mtu <= card->info.max_mtu));
2256 case QETH_CARD_TYPE_OSN:
2257 default:
2258 return 1;
2259 }
2260 }
2261
2262 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2263 unsigned long data)
2264 {
2265
2266 __u16 mtu, framesize;
2267 __u16 len;
2268 __u8 link_type;
2269 struct qeth_cmd_buffer *iob;
2270
2271 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2272
2273 iob = (struct qeth_cmd_buffer *) data;
2274 memcpy(&card->token.ulp_filter_r,
2275 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2276 QETH_MPC_TOKEN_LENGTH);
2277 if (card->info.type == QETH_CARD_TYPE_IQD) {
2278 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2279 mtu = qeth_get_mtu_outof_framesize(framesize);
2280 if (!mtu) {
2281 iob->rc = -EINVAL;
2282 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2283 return 0;
2284 }
2285 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2286 /* frame size has changed */
2287 if (card->dev &&
2288 ((card->dev->mtu == card->info.initial_mtu) ||
2289 (card->dev->mtu > mtu)))
2290 card->dev->mtu = mtu;
2291 qeth_free_qdio_buffers(card);
2292 }
2293 card->info.initial_mtu = mtu;
2294 card->info.max_mtu = mtu;
2295 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2296 } else {
2297 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2298 iob->data);
2299 card->info.initial_mtu = min(card->info.max_mtu,
2300 qeth_get_initial_mtu_for_card(card));
2301 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2302 }
2303
2304 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2305 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2306 memcpy(&link_type,
2307 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2308 card->info.link_type = link_type;
2309 } else
2310 card->info.link_type = 0;
2311 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2312 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2313 return 0;
2314 }
2315
2316 static int qeth_ulp_enable(struct qeth_card *card)
2317 {
2318 int rc;
2319 char prot_type;
2320 struct qeth_cmd_buffer *iob;
2321
2322 /*FIXME: trace view callbacks*/
2323 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2324
2325 iob = qeth_wait_for_buffer(&card->write);
2326 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2327
2328 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2329 (__u8) card->info.portno;
2330 if (card->options.layer2)
2331 if (card->info.type == QETH_CARD_TYPE_OSN)
2332 prot_type = QETH_PROT_OSN2;
2333 else
2334 prot_type = QETH_PROT_LAYER2;
2335 else
2336 prot_type = QETH_PROT_TCPIP;
2337
2338 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2339 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2340 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2341 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2342 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2343 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2344 qeth_ulp_enable_cb, NULL);
2345 return rc;
2346
2347 }
2348
2349 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2350 unsigned long data)
2351 {
2352 struct qeth_cmd_buffer *iob;
2353
2354 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2355
2356 iob = (struct qeth_cmd_buffer *) data;
2357 memcpy(&card->token.ulp_connection_r,
2358 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2359 QETH_MPC_TOKEN_LENGTH);
2360 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2361 3)) {
2362 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2363 dev_err(&card->gdev->dev, "A connection could not be "
2364 "established because of an OLM limit\n");
2365 iob->rc = -EMLINK;
2366 }
2367 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2368 return 0;
2369 }
2370
2371 static int qeth_ulp_setup(struct qeth_card *card)
2372 {
2373 int rc;
2374 __u16 temp;
2375 struct qeth_cmd_buffer *iob;
2376 struct ccw_dev_id dev_id;
2377
2378 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2379
2380 iob = qeth_wait_for_buffer(&card->write);
2381 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2382
2383 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2384 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2385 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2386 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2387 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2388 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2389
2390 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2391 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2392 temp = (card->info.cula << 8) + card->info.unit_addr2;
2393 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2394 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2395 qeth_ulp_setup_cb, NULL);
2396 return rc;
2397 }
2398
2399 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2400 {
2401 int rc;
2402 struct qeth_qdio_out_buffer *newbuf;
2403
2404 rc = 0;
2405 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2406 if (!newbuf) {
2407 rc = -ENOMEM;
2408 goto out;
2409 }
2410 newbuf->buffer = q->qdio_bufs[bidx];
2411 skb_queue_head_init(&newbuf->skb_list);
2412 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2413 newbuf->q = q;
2414 newbuf->aob = NULL;
2415 newbuf->next_pending = q->bufs[bidx];
2416 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2417 q->bufs[bidx] = newbuf;
2418 if (q->bufstates) {
2419 q->bufstates[bidx].user = newbuf;
2420 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2421 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2422 QETH_CARD_TEXT_(q->card, 2, "%lx",
2423 (long) newbuf->next_pending);
2424 }
2425 out:
2426 return rc;
2427 }
2428
2429 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2430 {
2431 if (!q)
2432 return;
2433
2434 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2435 kfree(q);
2436 }
2437
2438 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2439 {
2440 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2441
2442 if (!q)
2443 return NULL;
2444
2445 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2446 kfree(q);
2447 return NULL;
2448 }
2449 return q;
2450 }
2451
2452 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2453 {
2454 int i, j;
2455
2456 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2457
2458 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2459 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2460 return 0;
2461
2462 QETH_DBF_TEXT(SETUP, 2, "inq");
2463 card->qdio.in_q = qeth_alloc_qdio_queue();
2464 if (!card->qdio.in_q)
2465 goto out_nomem;
2466
2467 /* inbound buffer pool */
2468 if (qeth_alloc_buffer_pool(card))
2469 goto out_freeinq;
2470
2471 /* outbound */
2472 card->qdio.out_qs =
2473 kzalloc(card->qdio.no_out_queues *
2474 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2475 if (!card->qdio.out_qs)
2476 goto out_freepool;
2477 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2478 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2479 if (!card->qdio.out_qs[i])
2480 goto out_freeoutq;
2481 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2482 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2483 card->qdio.out_qs[i]->queue_no = i;
2484 /* give outbound qeth_qdio_buffers their qdio_buffers */
2485 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2486 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2487 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2488 goto out_freeoutqbufs;
2489 }
2490 }
2491
2492 /* completion */
2493 if (qeth_alloc_cq(card))
2494 goto out_freeoutq;
2495
2496 return 0;
2497
2498 out_freeoutqbufs:
2499 while (j > 0) {
2500 --j;
2501 kmem_cache_free(qeth_qdio_outbuf_cache,
2502 card->qdio.out_qs[i]->bufs[j]);
2503 card->qdio.out_qs[i]->bufs[j] = NULL;
2504 }
2505 out_freeoutq:
2506 while (i > 0) {
2507 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2508 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2509 }
2510 kfree(card->qdio.out_qs);
2511 card->qdio.out_qs = NULL;
2512 out_freepool:
2513 qeth_free_buffer_pool(card);
2514 out_freeinq:
2515 qeth_free_qdio_queue(card->qdio.in_q);
2516 card->qdio.in_q = NULL;
2517 out_nomem:
2518 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2519 return -ENOMEM;
2520 }
2521
2522 static void qeth_free_qdio_buffers(struct qeth_card *card)
2523 {
2524 int i, j;
2525
2526 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2527 QETH_QDIO_UNINITIALIZED)
2528 return;
2529
2530 qeth_free_cq(card);
2531 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2532 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2533 if (card->qdio.in_q->bufs[j].rx_skb)
2534 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2535 }
2536 qeth_free_qdio_queue(card->qdio.in_q);
2537 card->qdio.in_q = NULL;
2538 /* inbound buffer pool */
2539 qeth_free_buffer_pool(card);
2540 /* free outbound qdio_qs */
2541 if (card->qdio.out_qs) {
2542 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2543 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2544 qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2545 }
2546 kfree(card->qdio.out_qs);
2547 card->qdio.out_qs = NULL;
2548 }
2549 }
2550
2551 static void qeth_create_qib_param_field(struct qeth_card *card,
2552 char *param_field)
2553 {
2554
2555 param_field[0] = _ascebc['P'];
2556 param_field[1] = _ascebc['C'];
2557 param_field[2] = _ascebc['I'];
2558 param_field[3] = _ascebc['T'];
2559 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2560 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2561 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2562 }
2563
2564 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2565 char *param_field)
2566 {
2567 param_field[16] = _ascebc['B'];
2568 param_field[17] = _ascebc['L'];
2569 param_field[18] = _ascebc['K'];
2570 param_field[19] = _ascebc['T'];
2571 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2572 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2573 *((unsigned int *) (&param_field[28])) =
2574 card->info.blkt.inter_packet_jumbo;
2575 }
2576
2577 static int qeth_qdio_activate(struct qeth_card *card)
2578 {
2579 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2580 return qdio_activate(CARD_DDEV(card));
2581 }
2582
2583 static int qeth_dm_act(struct qeth_card *card)
2584 {
2585 int rc;
2586 struct qeth_cmd_buffer *iob;
2587
2588 QETH_DBF_TEXT(SETUP, 2, "dmact");
2589
2590 iob = qeth_wait_for_buffer(&card->write);
2591 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2592
2593 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2594 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2595 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2596 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2597 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2598 return rc;
2599 }
2600
2601 static int qeth_mpc_initialize(struct qeth_card *card)
2602 {
2603 int rc;
2604
2605 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2606
2607 rc = qeth_issue_next_read(card);
2608 if (rc) {
2609 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2610 return rc;
2611 }
2612 rc = qeth_cm_enable(card);
2613 if (rc) {
2614 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2615 goto out_qdio;
2616 }
2617 rc = qeth_cm_setup(card);
2618 if (rc) {
2619 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2620 goto out_qdio;
2621 }
2622 rc = qeth_ulp_enable(card);
2623 if (rc) {
2624 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2625 goto out_qdio;
2626 }
2627 rc = qeth_ulp_setup(card);
2628 if (rc) {
2629 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2630 goto out_qdio;
2631 }
2632 rc = qeth_alloc_qdio_buffers(card);
2633 if (rc) {
2634 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2635 goto out_qdio;
2636 }
2637 rc = qeth_qdio_establish(card);
2638 if (rc) {
2639 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2640 qeth_free_qdio_buffers(card);
2641 goto out_qdio;
2642 }
2643 rc = qeth_qdio_activate(card);
2644 if (rc) {
2645 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2646 goto out_qdio;
2647 }
2648 rc = qeth_dm_act(card);
2649 if (rc) {
2650 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2651 goto out_qdio;
2652 }
2653
2654 return 0;
2655 out_qdio:
2656 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2657 qdio_free(CARD_DDEV(card));
2658 return rc;
2659 }
2660
2661 void qeth_print_status_message(struct qeth_card *card)
2662 {
2663 switch (card->info.type) {
2664 case QETH_CARD_TYPE_OSD:
2665 case QETH_CARD_TYPE_OSM:
2666 case QETH_CARD_TYPE_OSX:
2667 /* VM will use a non-zero first character
2668 * to indicate a HiperSockets like reporting
2669 * of the level OSA sets the first character to zero
2670 * */
2671 if (!card->info.mcl_level[0]) {
2672 sprintf(card->info.mcl_level, "%02x%02x",
2673 card->info.mcl_level[2],
2674 card->info.mcl_level[3]);
2675 break;
2676 }
2677 /* fallthrough */
2678 case QETH_CARD_TYPE_IQD:
2679 if ((card->info.guestlan) ||
2680 (card->info.mcl_level[0] & 0x80)) {
2681 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2682 card->info.mcl_level[0]];
2683 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2684 card->info.mcl_level[1]];
2685 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2686 card->info.mcl_level[2]];
2687 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2688 card->info.mcl_level[3]];
2689 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2690 }
2691 break;
2692 default:
2693 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2694 }
2695 dev_info(&card->gdev->dev,
2696 "Device is a%s card%s%s%s\nwith link type %s.\n",
2697 qeth_get_cardname(card),
2698 (card->info.mcl_level[0]) ? " (level: " : "",
2699 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2700 (card->info.mcl_level[0]) ? ")" : "",
2701 qeth_get_cardname_short(card));
2702 }
2703 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2704
2705 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2706 {
2707 struct qeth_buffer_pool_entry *entry;
2708
2709 QETH_CARD_TEXT(card, 5, "inwrklst");
2710
2711 list_for_each_entry(entry,
2712 &card->qdio.init_pool.entry_list, init_list) {
2713 qeth_put_buffer_pool_entry(card, entry);
2714 }
2715 }
2716
2717 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2718 struct qeth_card *card)
2719 {
2720 struct list_head *plh;
2721 struct qeth_buffer_pool_entry *entry;
2722 int i, free;
2723 struct page *page;
2724
2725 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2726 return NULL;
2727
2728 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2729 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2730 free = 1;
2731 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2732 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2733 free = 0;
2734 break;
2735 }
2736 }
2737 if (free) {
2738 list_del_init(&entry->list);
2739 return entry;
2740 }
2741 }
2742
2743 /* no free buffer in pool so take first one and swap pages */
2744 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2745 struct qeth_buffer_pool_entry, list);
2746 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2747 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2748 page = alloc_page(GFP_ATOMIC);
2749 if (!page) {
2750 return NULL;
2751 } else {
2752 free_page((unsigned long)entry->elements[i]);
2753 entry->elements[i] = page_address(page);
2754 if (card->options.performance_stats)
2755 card->perf_stats.sg_alloc_page_rx++;
2756 }
2757 }
2758 }
2759 list_del_init(&entry->list);
2760 return entry;
2761 }
2762
2763 static int qeth_init_input_buffer(struct qeth_card *card,
2764 struct qeth_qdio_buffer *buf)
2765 {
2766 struct qeth_buffer_pool_entry *pool_entry;
2767 int i;
2768
2769 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2770 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2771 if (!buf->rx_skb)
2772 return 1;
2773 }
2774
2775 pool_entry = qeth_find_free_buffer_pool_entry(card);
2776 if (!pool_entry)
2777 return 1;
2778
2779 /*
2780 * since the buffer is accessed only from the input_tasklet
2781 * there shouldn't be a need to synchronize; also, since we use
2782 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2783 * buffers
2784 */
2785
2786 buf->pool_entry = pool_entry;
2787 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2788 buf->buffer->element[i].length = PAGE_SIZE;
2789 buf->buffer->element[i].addr = pool_entry->elements[i];
2790 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2791 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2792 else
2793 buf->buffer->element[i].eflags = 0;
2794 buf->buffer->element[i].sflags = 0;
2795 }
2796 return 0;
2797 }
2798
2799 int qeth_init_qdio_queues(struct qeth_card *card)
2800 {
2801 int i, j;
2802 int rc;
2803
2804 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2805
2806 /* inbound queue */
2807 qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2808 QDIO_MAX_BUFFERS_PER_Q);
2809 qeth_initialize_working_pool_list(card);
2810 /*give only as many buffers to hardware as we have buffer pool entries*/
2811 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2812 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2813 card->qdio.in_q->next_buf_to_init =
2814 card->qdio.in_buf_pool.buf_count - 1;
2815 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2816 card->qdio.in_buf_pool.buf_count - 1);
2817 if (rc) {
2818 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2819 return rc;
2820 }
2821
2822 /* completion */
2823 rc = qeth_cq_init(card);
2824 if (rc) {
2825 return rc;
2826 }
2827
2828 /* outbound queue */
2829 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2830 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2831 QDIO_MAX_BUFFERS_PER_Q);
2832 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2833 qeth_clear_output_buffer(card->qdio.out_qs[i],
2834 card->qdio.out_qs[i]->bufs[j],
2835 QETH_QDIO_BUF_EMPTY);
2836 }
2837 card->qdio.out_qs[i]->card = card;
2838 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2839 card->qdio.out_qs[i]->do_pack = 0;
2840 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2841 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2842 atomic_set(&card->qdio.out_qs[i]->state,
2843 QETH_OUT_Q_UNLOCKED);
2844 }
2845 return 0;
2846 }
2847 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2848
2849 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2850 {
2851 switch (link_type) {
2852 case QETH_LINK_TYPE_HSTR:
2853 return 2;
2854 default:
2855 return 1;
2856 }
2857 }
2858
2859 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2860 struct qeth_ipa_cmd *cmd, __u8 command,
2861 enum qeth_prot_versions prot)
2862 {
2863 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2864 cmd->hdr.command = command;
2865 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2866 cmd->hdr.seqno = card->seqno.ipa;
2867 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2868 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2869 if (card->options.layer2)
2870 cmd->hdr.prim_version_no = 2;
2871 else
2872 cmd->hdr.prim_version_no = 1;
2873 cmd->hdr.param_count = 1;
2874 cmd->hdr.prot_version = prot;
2875 cmd->hdr.ipa_supported = 0;
2876 cmd->hdr.ipa_enabled = 0;
2877 }
2878
2879 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2880 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2881 {
2882 struct qeth_cmd_buffer *iob;
2883 struct qeth_ipa_cmd *cmd;
2884
2885 iob = qeth_get_buffer(&card->write);
2886 if (iob) {
2887 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2888 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2889 } else {
2890 dev_warn(&card->gdev->dev,
2891 "The qeth driver ran out of channel command buffers\n");
2892 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2893 dev_name(&card->gdev->dev));
2894 }
2895
2896 return iob;
2897 }
2898 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2899
2900 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2901 char prot_type)
2902 {
2903 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2904 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2905 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2906 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2907 }
2908 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2909
2910 /**
2911 * qeth_send_ipa_cmd() - send an IPA command
2912 *
2913 * See qeth_send_control_data() for explanation of the arguments.
2914 */
2915
2916 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2917 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2918 unsigned long),
2919 void *reply_param)
2920 {
2921 int rc;
2922 char prot_type;
2923
2924 QETH_CARD_TEXT(card, 4, "sendipa");
2925
2926 if (card->options.layer2)
2927 if (card->info.type == QETH_CARD_TYPE_OSN)
2928 prot_type = QETH_PROT_OSN2;
2929 else
2930 prot_type = QETH_PROT_LAYER2;
2931 else
2932 prot_type = QETH_PROT_TCPIP;
2933 qeth_prepare_ipa_cmd(card, iob, prot_type);
2934 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2935 iob, reply_cb, reply_param);
2936 if (rc == -ETIME) {
2937 qeth_clear_ipacmd_list(card);
2938 qeth_schedule_recovery(card);
2939 }
2940 return rc;
2941 }
2942 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2943
2944 static int qeth_send_startlan(struct qeth_card *card)
2945 {
2946 int rc;
2947 struct qeth_cmd_buffer *iob;
2948
2949 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2950
2951 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2952 if (!iob)
2953 return -ENOMEM;
2954 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2955 return rc;
2956 }
2957
2958 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2959 struct qeth_reply *reply, unsigned long data)
2960 {
2961 struct qeth_ipa_cmd *cmd;
2962
2963 QETH_CARD_TEXT(card, 4, "defadpcb");
2964
2965 cmd = (struct qeth_ipa_cmd *) data;
2966 if (cmd->hdr.return_code == 0)
2967 cmd->hdr.return_code =
2968 cmd->data.setadapterparms.hdr.return_code;
2969 return 0;
2970 }
2971
2972 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2973 struct qeth_reply *reply, unsigned long data)
2974 {
2975 struct qeth_ipa_cmd *cmd;
2976
2977 QETH_CARD_TEXT(card, 3, "quyadpcb");
2978
2979 cmd = (struct qeth_ipa_cmd *) data;
2980 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2981 card->info.link_type =
2982 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2983 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2984 }
2985 card->options.adp.supported_funcs =
2986 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2987 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2988 }
2989
2990 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2991 __u32 command, __u32 cmdlen)
2992 {
2993 struct qeth_cmd_buffer *iob;
2994 struct qeth_ipa_cmd *cmd;
2995
2996 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2997 QETH_PROT_IPV4);
2998 if (iob) {
2999 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3000 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3001 cmd->data.setadapterparms.hdr.command_code = command;
3002 cmd->data.setadapterparms.hdr.used_total = 1;
3003 cmd->data.setadapterparms.hdr.seq_no = 1;
3004 }
3005
3006 return iob;
3007 }
3008
3009 int qeth_query_setadapterparms(struct qeth_card *card)
3010 {
3011 int rc;
3012 struct qeth_cmd_buffer *iob;
3013
3014 QETH_CARD_TEXT(card, 3, "queryadp");
3015 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3016 sizeof(struct qeth_ipacmd_setadpparms));
3017 if (!iob)
3018 return -ENOMEM;
3019 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3020 return rc;
3021 }
3022 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3023
3024 static int qeth_query_ipassists_cb(struct qeth_card *card,
3025 struct qeth_reply *reply, unsigned long data)
3026 {
3027 struct qeth_ipa_cmd *cmd;
3028
3029 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3030
3031 cmd = (struct qeth_ipa_cmd *) data;
3032
3033 switch (cmd->hdr.return_code) {
3034 case IPA_RC_NOTSUPP:
3035 case IPA_RC_L2_UNSUPPORTED_CMD:
3036 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3037 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3038 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3039 return -0;
3040 default:
3041 if (cmd->hdr.return_code) {
3042 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3043 "rc=%d\n",
3044 dev_name(&card->gdev->dev),
3045 cmd->hdr.return_code);
3046 return 0;
3047 }
3048 }
3049
3050 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3051 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3052 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3053 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3054 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3055 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3056 } else
3057 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3058 "\n", dev_name(&card->gdev->dev));
3059 return 0;
3060 }
3061
3062 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3063 {
3064 int rc;
3065 struct qeth_cmd_buffer *iob;
3066
3067 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3068 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3069 if (!iob)
3070 return -ENOMEM;
3071 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3072 return rc;
3073 }
3074 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3075
3076 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3077 struct qeth_reply *reply, unsigned long data)
3078 {
3079 struct qeth_ipa_cmd *cmd;
3080 struct qeth_switch_info *sw_info;
3081 struct qeth_query_switch_attributes *attrs;
3082
3083 QETH_CARD_TEXT(card, 2, "qswiatcb");
3084 cmd = (struct qeth_ipa_cmd *) data;
3085 sw_info = (struct qeth_switch_info *)reply->param;
3086 if (cmd->data.setadapterparms.hdr.return_code == 0) {
3087 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3088 sw_info->capabilities = attrs->capabilities;
3089 sw_info->settings = attrs->settings;
3090 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3091 sw_info->settings);
3092 }
3093 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3094
3095 return 0;
3096 }
3097
3098 int qeth_query_switch_attributes(struct qeth_card *card,
3099 struct qeth_switch_info *sw_info)
3100 {
3101 struct qeth_cmd_buffer *iob;
3102
3103 QETH_CARD_TEXT(card, 2, "qswiattr");
3104 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3105 return -EOPNOTSUPP;
3106 if (!netif_carrier_ok(card->dev))
3107 return -ENOMEDIUM;
3108 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3109 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3110 if (!iob)
3111 return -ENOMEM;
3112 return qeth_send_ipa_cmd(card, iob,
3113 qeth_query_switch_attributes_cb, sw_info);
3114 }
3115 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3116
3117 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3118 struct qeth_reply *reply, unsigned long data)
3119 {
3120 struct qeth_ipa_cmd *cmd;
3121 __u16 rc;
3122
3123 cmd = (struct qeth_ipa_cmd *)data;
3124 rc = cmd->hdr.return_code;
3125 if (rc)
3126 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3127 else
3128 card->info.diagass_support = cmd->data.diagass.ext;
3129 return 0;
3130 }
3131
3132 static int qeth_query_setdiagass(struct qeth_card *card)
3133 {
3134 struct qeth_cmd_buffer *iob;
3135 struct qeth_ipa_cmd *cmd;
3136
3137 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3138 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3139 if (!iob)
3140 return -ENOMEM;
3141 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3142 cmd->data.diagass.subcmd_len = 16;
3143 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3144 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3145 }
3146
3147 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3148 {
3149 unsigned long info = get_zeroed_page(GFP_KERNEL);
3150 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3151 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3152 struct ccw_dev_id ccwid;
3153 int level;
3154
3155 tid->chpid = card->info.chpid;
3156 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3157 tid->ssid = ccwid.ssid;
3158 tid->devno = ccwid.devno;
3159 if (!info)
3160 return;
3161 level = stsi(NULL, 0, 0, 0);
3162 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3163 tid->lparnr = info222->lpar_number;
3164 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3165 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3166 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3167 }
3168 free_page(info);
3169 return;
3170 }
3171
3172 static int qeth_hw_trap_cb(struct qeth_card *card,
3173 struct qeth_reply *reply, unsigned long data)
3174 {
3175 struct qeth_ipa_cmd *cmd;
3176 __u16 rc;
3177
3178 cmd = (struct qeth_ipa_cmd *)data;
3179 rc = cmd->hdr.return_code;
3180 if (rc)
3181 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3182 return 0;
3183 }
3184
3185 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3186 {
3187 struct qeth_cmd_buffer *iob;
3188 struct qeth_ipa_cmd *cmd;
3189
3190 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3191 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3192 if (!iob)
3193 return -ENOMEM;
3194 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3195 cmd->data.diagass.subcmd_len = 80;
3196 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3197 cmd->data.diagass.type = 1;
3198 cmd->data.diagass.action = action;
3199 switch (action) {
3200 case QETH_DIAGS_TRAP_ARM:
3201 cmd->data.diagass.options = 0x0003;
3202 cmd->data.diagass.ext = 0x00010000 +
3203 sizeof(struct qeth_trap_id);
3204 qeth_get_trap_id(card,
3205 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3206 break;
3207 case QETH_DIAGS_TRAP_DISARM:
3208 cmd->data.diagass.options = 0x0001;
3209 break;
3210 case QETH_DIAGS_TRAP_CAPTURE:
3211 break;
3212 }
3213 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3214 }
3215 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3216
3217 static int qeth_check_qdio_errors(struct qeth_card *card,
3218 struct qdio_buffer *buf,
3219 unsigned int qdio_error,
3220 const char *dbftext)
3221 {
3222 if (qdio_error) {
3223 QETH_CARD_TEXT(card, 2, dbftext);
3224 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3225 buf->element[15].sflags);
3226 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3227 buf->element[14].sflags);
3228 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3229 if ((buf->element[15].sflags) == 0x12) {
3230 card->stats.rx_dropped++;
3231 return 0;
3232 } else
3233 return 1;
3234 }
3235 return 0;
3236 }
3237
3238 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3239 {
3240 struct qeth_qdio_q *queue = card->qdio.in_q;
3241 struct list_head *lh;
3242 int count;
3243 int i;
3244 int rc;
3245 int newcount = 0;
3246
3247 count = (index < queue->next_buf_to_init)?
3248 card->qdio.in_buf_pool.buf_count -
3249 (queue->next_buf_to_init - index) :
3250 card->qdio.in_buf_pool.buf_count -
3251 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3252 /* only requeue at a certain threshold to avoid SIGAs */
3253 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3254 for (i = queue->next_buf_to_init;
3255 i < queue->next_buf_to_init + count; ++i) {
3256 if (qeth_init_input_buffer(card,
3257 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3258 break;
3259 } else {
3260 newcount++;
3261 }
3262 }
3263
3264 if (newcount < count) {
3265 /* we are in memory shortage so we switch back to
3266 traditional skb allocation and drop packages */
3267 atomic_set(&card->force_alloc_skb, 3);
3268 count = newcount;
3269 } else {
3270 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3271 }
3272
3273 if (!count) {
3274 i = 0;
3275 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3276 i++;
3277 if (i == card->qdio.in_buf_pool.buf_count) {
3278 QETH_CARD_TEXT(card, 2, "qsarbw");
3279 card->reclaim_index = index;
3280 schedule_delayed_work(
3281 &card->buffer_reclaim_work,
3282 QETH_RECLAIM_WORK_TIME);
3283 }
3284 return;
3285 }
3286
3287 /*
3288 * according to old code it should be avoided to requeue all
3289 * 128 buffers in order to benefit from PCI avoidance.
3290 * this function keeps at least one buffer (the buffer at
3291 * 'index') un-requeued -> this buffer is the first buffer that
3292 * will be requeued the next time
3293 */
3294 if (card->options.performance_stats) {
3295 card->perf_stats.inbound_do_qdio_cnt++;
3296 card->perf_stats.inbound_do_qdio_start_time =
3297 qeth_get_micros();
3298 }
3299 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3300 queue->next_buf_to_init, count);
3301 if (card->options.performance_stats)
3302 card->perf_stats.inbound_do_qdio_time +=
3303 qeth_get_micros() -
3304 card->perf_stats.inbound_do_qdio_start_time;
3305 if (rc) {
3306 QETH_CARD_TEXT(card, 2, "qinberr");
3307 }
3308 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3309 QDIO_MAX_BUFFERS_PER_Q;
3310 }
3311 }
3312
3313 static void qeth_buffer_reclaim_work(struct work_struct *work)
3314 {
3315 struct qeth_card *card = container_of(work, struct qeth_card,
3316 buffer_reclaim_work.work);
3317
3318 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3319 qeth_queue_input_buffer(card, card->reclaim_index);
3320 }
3321
3322 static void qeth_handle_send_error(struct qeth_card *card,
3323 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3324 {
3325 int sbalf15 = buffer->buffer->element[15].sflags;
3326
3327 QETH_CARD_TEXT(card, 6, "hdsnderr");
3328 if (card->info.type == QETH_CARD_TYPE_IQD) {
3329 if (sbalf15 == 0) {
3330 qdio_err = 0;
3331 } else {
3332 qdio_err = 1;
3333 }
3334 }
3335 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3336
3337 if (!qdio_err)
3338 return;
3339
3340 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3341 return;
3342
3343 QETH_CARD_TEXT(card, 1, "lnkfail");
3344 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3345 (u16)qdio_err, (u8)sbalf15);
3346 }
3347
3348 /**
3349 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3350 * @queue: queue to check for packing buffer
3351 *
3352 * Returns number of buffers that were prepared for flush.
3353 */
3354 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3355 {
3356 struct qeth_qdio_out_buffer *buffer;
3357
3358 buffer = queue->bufs[queue->next_buf_to_fill];
3359 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3360 (buffer->next_element_to_fill > 0)) {
3361 /* it's a packing buffer */
3362 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3363 queue->next_buf_to_fill =
3364 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3365 return 1;
3366 }
3367 return 0;
3368 }
3369
3370 /*
3371 * Switched to packing state if the number of used buffers on a queue
3372 * reaches a certain limit.
3373 */
3374 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3375 {
3376 if (!queue->do_pack) {
3377 if (atomic_read(&queue->used_buffers)
3378 >= QETH_HIGH_WATERMARK_PACK){
3379 /* switch non-PACKING -> PACKING */
3380 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3381 if (queue->card->options.performance_stats)
3382 queue->card->perf_stats.sc_dp_p++;
3383 queue->do_pack = 1;
3384 }
3385 }
3386 }
3387
3388 /*
3389 * Switches from packing to non-packing mode. If there is a packing
3390 * buffer on the queue this buffer will be prepared to be flushed.
3391 * In that case 1 is returned to inform the caller. If no buffer
3392 * has to be flushed, zero is returned.
3393 */
3394 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3395 {
3396 if (queue->do_pack) {
3397 if (atomic_read(&queue->used_buffers)
3398 <= QETH_LOW_WATERMARK_PACK) {
3399 /* switch PACKING -> non-PACKING */
3400 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3401 if (queue->card->options.performance_stats)
3402 queue->card->perf_stats.sc_p_dp++;
3403 queue->do_pack = 0;
3404 return qeth_prep_flush_pack_buffer(queue);
3405 }
3406 }
3407 return 0;
3408 }
3409
3410 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3411 int count)
3412 {
3413 struct qeth_qdio_out_buffer *buf;
3414 int rc;
3415 int i;
3416 unsigned int qdio_flags;
3417
3418 for (i = index; i < index + count; ++i) {
3419 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3420 buf = queue->bufs[bidx];
3421 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3422 SBAL_EFLAGS_LAST_ENTRY;
3423
3424 if (queue->bufstates)
3425 queue->bufstates[bidx].user = buf;
3426
3427 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3428 continue;
3429
3430 if (!queue->do_pack) {
3431 if ((atomic_read(&queue->used_buffers) >=
3432 (QETH_HIGH_WATERMARK_PACK -
3433 QETH_WATERMARK_PACK_FUZZ)) &&
3434 !atomic_read(&queue->set_pci_flags_count)) {
3435 /* it's likely that we'll go to packing
3436 * mode soon */
3437 atomic_inc(&queue->set_pci_flags_count);
3438 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3439 }
3440 } else {
3441 if (!atomic_read(&queue->set_pci_flags_count)) {
3442 /*
3443 * there's no outstanding PCI any more, so we
3444 * have to request a PCI to be sure the the PCI
3445 * will wake at some time in the future then we
3446 * can flush packed buffers that might still be
3447 * hanging around, which can happen if no
3448 * further send was requested by the stack
3449 */
3450 atomic_inc(&queue->set_pci_flags_count);
3451 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3452 }
3453 }
3454 }
3455
3456 netif_trans_update(queue->card->dev);
3457 if (queue->card->options.performance_stats) {
3458 queue->card->perf_stats.outbound_do_qdio_cnt++;
3459 queue->card->perf_stats.outbound_do_qdio_start_time =
3460 qeth_get_micros();
3461 }
3462 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3463 if (atomic_read(&queue->set_pci_flags_count))
3464 qdio_flags |= QDIO_FLAG_PCI_OUT;
3465 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3466 queue->queue_no, index, count);
3467 if (queue->card->options.performance_stats)
3468 queue->card->perf_stats.outbound_do_qdio_time +=
3469 qeth_get_micros() -
3470 queue->card->perf_stats.outbound_do_qdio_start_time;
3471 atomic_add(count, &queue->used_buffers);
3472 if (rc) {
3473 queue->card->stats.tx_errors += count;
3474 /* ignore temporary SIGA errors without busy condition */
3475 if (rc == -ENOBUFS)
3476 return;
3477 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3478 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3479 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3480 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3481 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3482
3483 /* this must not happen under normal circumstances. if it
3484 * happens something is really wrong -> recover */
3485 qeth_schedule_recovery(queue->card);
3486 return;
3487 }
3488 if (queue->card->options.performance_stats)
3489 queue->card->perf_stats.bufs_sent += count;
3490 }
3491
3492 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3493 {
3494 int index;
3495 int flush_cnt = 0;
3496 int q_was_packing = 0;
3497
3498 /*
3499 * check if weed have to switch to non-packing mode or if
3500 * we have to get a pci flag out on the queue
3501 */
3502 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3503 !atomic_read(&queue->set_pci_flags_count)) {
3504 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3505 QETH_OUT_Q_UNLOCKED) {
3506 /*
3507 * If we get in here, there was no action in
3508 * do_send_packet. So, we check if there is a
3509 * packing buffer to be flushed here.
3510 */
3511 netif_stop_queue(queue->card->dev);
3512 index = queue->next_buf_to_fill;
3513 q_was_packing = queue->do_pack;
3514 /* queue->do_pack may change */
3515 barrier();
3516 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3517 if (!flush_cnt &&
3518 !atomic_read(&queue->set_pci_flags_count))
3519 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3520 if (queue->card->options.performance_stats &&
3521 q_was_packing)
3522 queue->card->perf_stats.bufs_sent_pack +=
3523 flush_cnt;
3524 if (flush_cnt)
3525 qeth_flush_buffers(queue, index, flush_cnt);
3526 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3527 }
3528 }
3529 }
3530
3531 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3532 unsigned long card_ptr)
3533 {
3534 struct qeth_card *card = (struct qeth_card *)card_ptr;
3535
3536 if (card->dev && (card->dev->flags & IFF_UP))
3537 napi_schedule(&card->napi);
3538 }
3539 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3540
3541 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3542 {
3543 int rc;
3544
3545 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3546 rc = -1;
3547 goto out;
3548 } else {
3549 if (card->options.cq == cq) {
3550 rc = 0;
3551 goto out;
3552 }
3553
3554 if (card->state != CARD_STATE_DOWN &&
3555 card->state != CARD_STATE_RECOVER) {
3556 rc = -1;
3557 goto out;
3558 }
3559
3560 qeth_free_qdio_buffers(card);
3561 card->options.cq = cq;
3562 rc = 0;
3563 }
3564 out:
3565 return rc;
3566
3567 }
3568 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3569
3570
3571 static void qeth_qdio_cq_handler(struct qeth_card *card,
3572 unsigned int qdio_err,
3573 unsigned int queue, int first_element, int count) {
3574 struct qeth_qdio_q *cq = card->qdio.c_q;
3575 int i;
3576 int rc;
3577
3578 if (!qeth_is_cq(card, queue))
3579 goto out;
3580
3581 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3582 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3583 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3584
3585 if (qdio_err) {
3586 netif_stop_queue(card->dev);
3587 qeth_schedule_recovery(card);
3588 goto out;
3589 }
3590
3591 if (card->options.performance_stats) {
3592 card->perf_stats.cq_cnt++;
3593 card->perf_stats.cq_start_time = qeth_get_micros();
3594 }
3595
3596 for (i = first_element; i < first_element + count; ++i) {
3597 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3598 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3599 int e;
3600
3601 e = 0;
3602 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3603 buffer->element[e].addr) {
3604 unsigned long phys_aob_addr;
3605
3606 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3607 qeth_qdio_handle_aob(card, phys_aob_addr);
3608 buffer->element[e].addr = NULL;
3609 buffer->element[e].eflags = 0;
3610 buffer->element[e].sflags = 0;
3611 buffer->element[e].length = 0;
3612
3613 ++e;
3614 }
3615
3616 buffer->element[15].eflags = 0;
3617 buffer->element[15].sflags = 0;
3618 }
3619 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3620 card->qdio.c_q->next_buf_to_init,
3621 count);
3622 if (rc) {
3623 dev_warn(&card->gdev->dev,
3624 "QDIO reported an error, rc=%i\n", rc);
3625 QETH_CARD_TEXT(card, 2, "qcqherr");
3626 }
3627 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3628 + count) % QDIO_MAX_BUFFERS_PER_Q;
3629
3630 netif_wake_queue(card->dev);
3631
3632 if (card->options.performance_stats) {
3633 int delta_t = qeth_get_micros();
3634 delta_t -= card->perf_stats.cq_start_time;
3635 card->perf_stats.cq_time += delta_t;
3636 }
3637 out:
3638 return;
3639 }
3640
3641 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3642 unsigned int queue, int first_elem, int count,
3643 unsigned long card_ptr)
3644 {
3645 struct qeth_card *card = (struct qeth_card *)card_ptr;
3646
3647 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3648 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3649
3650 if (qeth_is_cq(card, queue))
3651 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3652 else if (qdio_err)
3653 qeth_schedule_recovery(card);
3654
3655
3656 }
3657 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3658
3659 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3660 unsigned int qdio_error, int __queue, int first_element,
3661 int count, unsigned long card_ptr)
3662 {
3663 struct qeth_card *card = (struct qeth_card *) card_ptr;
3664 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3665 struct qeth_qdio_out_buffer *buffer;
3666 int i;
3667
3668 QETH_CARD_TEXT(card, 6, "qdouhdl");
3669 if (qdio_error & QDIO_ERROR_FATAL) {
3670 QETH_CARD_TEXT(card, 2, "achkcond");
3671 netif_stop_queue(card->dev);
3672 qeth_schedule_recovery(card);
3673 return;
3674 }
3675 if (card->options.performance_stats) {
3676 card->perf_stats.outbound_handler_cnt++;
3677 card->perf_stats.outbound_handler_start_time =
3678 qeth_get_micros();
3679 }
3680 for (i = first_element; i < (first_element + count); ++i) {
3681 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3682 buffer = queue->bufs[bidx];
3683 qeth_handle_send_error(card, buffer, qdio_error);
3684
3685 if (queue->bufstates &&
3686 (queue->bufstates[bidx].flags &
3687 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3688 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3689
3690 if (atomic_cmpxchg(&buffer->state,
3691 QETH_QDIO_BUF_PRIMED,
3692 QETH_QDIO_BUF_PENDING) ==
3693 QETH_QDIO_BUF_PRIMED) {
3694 qeth_notify_skbs(queue, buffer,
3695 TX_NOTIFY_PENDING);
3696 }
3697 buffer->aob = queue->bufstates[bidx].aob;
3698 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3699 QETH_CARD_TEXT(queue->card, 5, "aob");
3700 QETH_CARD_TEXT_(queue->card, 5, "%lx",
3701 virt_to_phys(buffer->aob));
3702 if (qeth_init_qdio_out_buf(queue, bidx)) {
3703 QETH_CARD_TEXT(card, 2, "outofbuf");
3704 qeth_schedule_recovery(card);
3705 }
3706 } else {
3707 if (card->options.cq == QETH_CQ_ENABLED) {
3708 enum iucv_tx_notify n;
3709
3710 n = qeth_compute_cq_notification(
3711 buffer->buffer->element[15].sflags, 0);
3712 qeth_notify_skbs(queue, buffer, n);
3713 }
3714
3715 qeth_clear_output_buffer(queue, buffer,
3716 QETH_QDIO_BUF_EMPTY);
3717 }
3718 qeth_cleanup_handled_pending(queue, bidx, 0);
3719 }
3720 atomic_sub(count, &queue->used_buffers);
3721 /* check if we need to do something on this outbound queue */
3722 if (card->info.type != QETH_CARD_TYPE_IQD)
3723 qeth_check_outbound_queue(queue);
3724
3725 netif_wake_queue(queue->card->dev);
3726 if (card->options.performance_stats)
3727 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3728 card->perf_stats.outbound_handler_start_time;
3729 }
3730 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3731
3732 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3733 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3734 {
3735 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3736 return 2;
3737 return queue_num;
3738 }
3739
3740 /**
3741 * Note: Function assumes that we have 4 outbound queues.
3742 */
3743 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3744 int ipv, int cast_type)
3745 {
3746 __be16 *tci;
3747 u8 tos;
3748
3749 if (cast_type && card->info.is_multicast_different)
3750 return card->info.is_multicast_different &
3751 (card->qdio.no_out_queues - 1);
3752
3753 switch (card->qdio.do_prio_queueing) {
3754 case QETH_PRIO_Q_ING_TOS:
3755 case QETH_PRIO_Q_ING_PREC:
3756 switch (ipv) {
3757 case 4:
3758 tos = ipv4_get_dsfield(ip_hdr(skb));
3759 break;
3760 case 6:
3761 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3762 break;
3763 default:
3764 return card->qdio.default_out_queue;
3765 }
3766 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3767 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3768 if (tos & IPTOS_MINCOST)
3769 return qeth_cut_iqd_prio(card, 3);
3770 if (tos & IPTOS_RELIABILITY)
3771 return 2;
3772 if (tos & IPTOS_THROUGHPUT)
3773 return 1;
3774 if (tos & IPTOS_LOWDELAY)
3775 return 0;
3776 break;
3777 case QETH_PRIO_Q_ING_SKB:
3778 if (skb->priority > 5)
3779 return 0;
3780 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3781 case QETH_PRIO_Q_ING_VLAN:
3782 tci = &((struct ethhdr *)skb->data)->h_proto;
3783 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3784 return qeth_cut_iqd_prio(card,
3785 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3786 break;
3787 default:
3788 break;
3789 }
3790 return card->qdio.default_out_queue;
3791 }
3792 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3793
3794 /**
3795 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3796 * @skb: SKB address
3797 *
3798 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3799 * fragmented part of the SKB. Returns zero for linear SKB.
3800 */
3801 int qeth_get_elements_for_frags(struct sk_buff *skb)
3802 {
3803 int cnt, elements = 0;
3804
3805 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3806 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3807
3808 elements += qeth_get_elements_for_range(
3809 (addr_t)skb_frag_address(frag),
3810 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3811 }
3812 return elements;
3813 }
3814 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3815
3816 /**
3817 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags.
3818 * @card: qeth card structure, to check max. elems.
3819 * @skb: SKB address
3820 * @extra_elems: extra elems needed, to check against max.
3821 * @data_offset: range starts at skb->data + data_offset
3822 *
3823 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3824 * skb data, including linear part and fragments. Checks if the result plus
3825 * extra_elems fits under the limit for the card. Returns 0 if it does not.
3826 * Note: extra_elems is not included in the returned result.
3827 */
3828 int qeth_get_elements_no(struct qeth_card *card,
3829 struct sk_buff *skb, int extra_elems, int data_offset)
3830 {
3831 int elements = qeth_get_elements_for_range(
3832 (addr_t)skb->data + data_offset,
3833 (addr_t)skb->data + skb_headlen(skb)) +
3834 qeth_get_elements_for_frags(skb);
3835
3836 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3837 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3838 "(Number=%d / Length=%d). Discarded.\n",
3839 elements + extra_elems, skb->len);
3840 return 0;
3841 }
3842 return elements;
3843 }
3844 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3845
3846 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3847 {
3848 int hroom, inpage, rest;
3849
3850 if (((unsigned long)skb->data & PAGE_MASK) !=
3851 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3852 hroom = skb_headroom(skb);
3853 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3854 rest = len - inpage;
3855 if (rest > hroom)
3856 return 1;
3857 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3858 skb->data -= rest;
3859 skb->tail -= rest;
3860 *hdr = (struct qeth_hdr *)skb->data;
3861 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3862 }
3863 return 0;
3864 }
3865 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3866
3867 /**
3868 * qeth_push_hdr() - push a qeth_hdr onto an skb.
3869 * @skb: skb that the qeth_hdr should be pushed onto.
3870 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3871 * it contains a valid pointer to a qeth_hdr.
3872 * @len: length of the hdr that needs to be pushed on.
3873 *
3874 * Returns the pushed length. If the header can't be pushed on
3875 * (eg. because it would cross a page boundary), it is allocated from
3876 * the cache instead and 0 is returned.
3877 * Error to create the hdr is indicated by returning with < 0.
3878 */
3879 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len)
3880 {
3881 if (skb_headroom(skb) >= len &&
3882 qeth_get_elements_for_range((addr_t)skb->data - len,
3883 (addr_t)skb->data) == 1) {
3884 *hdr = skb_push(skb, len);
3885 return len;
3886 }
3887 /* fall back */
3888 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3889 if (!*hdr)
3890 return -ENOMEM;
3891 return 0;
3892 }
3893 EXPORT_SYMBOL_GPL(qeth_push_hdr);
3894
3895 static void __qeth_fill_buffer(struct sk_buff *skb,
3896 struct qeth_qdio_out_buffer *buf,
3897 bool is_first_elem, unsigned int offset)
3898 {
3899 struct qdio_buffer *buffer = buf->buffer;
3900 int element = buf->next_element_to_fill;
3901 int length = skb_headlen(skb) - offset;
3902 char *data = skb->data + offset;
3903 int length_here, cnt;
3904
3905 /* map linear part into buffer element(s) */
3906 while (length > 0) {
3907 /* length_here is the remaining amount of data in this page */
3908 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3909 if (length < length_here)
3910 length_here = length;
3911
3912 buffer->element[element].addr = data;
3913 buffer->element[element].length = length_here;
3914 length -= length_here;
3915 if (is_first_elem) {
3916 is_first_elem = false;
3917 if (length || skb_is_nonlinear(skb))
3918 /* skb needs additional elements */
3919 buffer->element[element].eflags =
3920 SBAL_EFLAGS_FIRST_FRAG;
3921 else
3922 buffer->element[element].eflags = 0;
3923 } else {
3924 buffer->element[element].eflags =
3925 SBAL_EFLAGS_MIDDLE_FRAG;
3926 }
3927 data += length_here;
3928 element++;
3929 }
3930
3931 /* map page frags into buffer element(s) */
3932 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3933 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3934
3935 data = skb_frag_address(frag);
3936 length = skb_frag_size(frag);
3937 while (length > 0) {
3938 length_here = PAGE_SIZE -
3939 ((unsigned long) data % PAGE_SIZE);
3940 if (length < length_here)
3941 length_here = length;
3942
3943 buffer->element[element].addr = data;
3944 buffer->element[element].length = length_here;
3945 buffer->element[element].eflags =
3946 SBAL_EFLAGS_MIDDLE_FRAG;
3947 length -= length_here;
3948 data += length_here;
3949 element++;
3950 }
3951 }
3952
3953 if (buffer->element[element - 1].eflags)
3954 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3955 buf->next_element_to_fill = element;
3956 }
3957
3958 /**
3959 * qeth_fill_buffer() - map skb into an output buffer
3960 * @queue: QDIO queue to submit the buffer on
3961 * @buf: buffer to transport the skb
3962 * @skb: skb to map into the buffer
3963 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
3964 * from qeth_core_header_cache.
3965 * @offset: when mapping the skb, start at skb->data + offset
3966 * @hd_len: if > 0, build a dedicated header element of this size
3967 */
3968 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3969 struct qeth_qdio_out_buffer *buf,
3970 struct sk_buff *skb, struct qeth_hdr *hdr,
3971 unsigned int offset, unsigned int hd_len)
3972 {
3973 struct qdio_buffer *buffer = buf->buffer;
3974 bool is_first_elem = true;
3975 int flush_cnt = 0;
3976
3977 refcount_inc(&skb->users);
3978 skb_queue_tail(&buf->skb_list, skb);
3979
3980 /* build dedicated header element */
3981 if (hd_len) {
3982 int element = buf->next_element_to_fill;
3983 is_first_elem = false;
3984
3985 buffer->element[element].addr = hdr;
3986 buffer->element[element].length = hd_len;
3987 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3988 /* remember to free cache-allocated qeth_hdr: */
3989 buf->is_header[element] = ((void *)hdr != skb->data);
3990 buf->next_element_to_fill++;
3991 }
3992
3993 __qeth_fill_buffer(skb, buf, is_first_elem, offset);
3994
3995 if (!queue->do_pack) {
3996 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3997 /* set state to PRIMED -> will be flushed */
3998 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3999 flush_cnt = 1;
4000 } else {
4001 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4002 if (queue->card->options.performance_stats)
4003 queue->card->perf_stats.skbs_sent_pack++;
4004 if (buf->next_element_to_fill >=
4005 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4006 /*
4007 * packed buffer if full -> set state PRIMED
4008 * -> will be flushed
4009 */
4010 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4011 flush_cnt = 1;
4012 }
4013 }
4014 return flush_cnt;
4015 }
4016
4017 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4018 struct qeth_hdr *hdr, unsigned int offset,
4019 unsigned int hd_len)
4020 {
4021 int index = queue->next_buf_to_fill;
4022 struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
4023
4024 /*
4025 * check if buffer is empty to make sure that we do not 'overtake'
4026 * ourselves and try to fill a buffer that is already primed
4027 */
4028 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4029 return -EBUSY;
4030 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
4031 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4032 qeth_flush_buffers(queue, index, 1);
4033 return 0;
4034 }
4035 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4036
4037 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4038 struct sk_buff *skb, struct qeth_hdr *hdr,
4039 unsigned int offset, unsigned int hd_len,
4040 int elements_needed)
4041 {
4042 struct qeth_qdio_out_buffer *buffer;
4043 int start_index;
4044 int flush_count = 0;
4045 int do_pack = 0;
4046 int tmp;
4047 int rc = 0;
4048
4049 /* spin until we get the queue ... */
4050 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4051 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4052 start_index = queue->next_buf_to_fill;
4053 buffer = queue->bufs[queue->next_buf_to_fill];
4054 /*
4055 * check if buffer is empty to make sure that we do not 'overtake'
4056 * ourselves and try to fill a buffer that is already primed
4057 */
4058 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4059 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4060 return -EBUSY;
4061 }
4062 /* check if we need to switch packing state of this queue */
4063 qeth_switch_to_packing_if_needed(queue);
4064 if (queue->do_pack) {
4065 do_pack = 1;
4066 /* does packet fit in current buffer? */
4067 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4068 buffer->next_element_to_fill) < elements_needed) {
4069 /* ... no -> set state PRIMED */
4070 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4071 flush_count++;
4072 queue->next_buf_to_fill =
4073 (queue->next_buf_to_fill + 1) %
4074 QDIO_MAX_BUFFERS_PER_Q;
4075 buffer = queue->bufs[queue->next_buf_to_fill];
4076 /* we did a step forward, so check buffer state
4077 * again */
4078 if (atomic_read(&buffer->state) !=
4079 QETH_QDIO_BUF_EMPTY) {
4080 qeth_flush_buffers(queue, start_index,
4081 flush_count);
4082 atomic_set(&queue->state,
4083 QETH_OUT_Q_UNLOCKED);
4084 rc = -EBUSY;
4085 goto out;
4086 }
4087 }
4088 }
4089 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4090 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4091 QDIO_MAX_BUFFERS_PER_Q;
4092 flush_count += tmp;
4093 if (flush_count)
4094 qeth_flush_buffers(queue, start_index, flush_count);
4095 else if (!atomic_read(&queue->set_pci_flags_count))
4096 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4097 /*
4098 * queue->state will go from LOCKED -> UNLOCKED or from
4099 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4100 * (switch packing state or flush buffer to get another pci flag out).
4101 * In that case we will enter this loop
4102 */
4103 while (atomic_dec_return(&queue->state)) {
4104 start_index = queue->next_buf_to_fill;
4105 /* check if we can go back to non-packing state */
4106 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4107 /*
4108 * check if we need to flush a packing buffer to get a pci
4109 * flag out on the queue
4110 */
4111 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4112 tmp = qeth_prep_flush_pack_buffer(queue);
4113 if (tmp) {
4114 qeth_flush_buffers(queue, start_index, tmp);
4115 flush_count += tmp;
4116 }
4117 }
4118 out:
4119 /* at this point the queue is UNLOCKED again */
4120 if (queue->card->options.performance_stats && do_pack)
4121 queue->card->perf_stats.bufs_sent_pack += flush_count;
4122
4123 return rc;
4124 }
4125 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4126
4127 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4128 struct qeth_reply *reply, unsigned long data)
4129 {
4130 struct qeth_ipa_cmd *cmd;
4131 struct qeth_ipacmd_setadpparms *setparms;
4132
4133 QETH_CARD_TEXT(card, 4, "prmadpcb");
4134
4135 cmd = (struct qeth_ipa_cmd *) data;
4136 setparms = &(cmd->data.setadapterparms);
4137
4138 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4139 if (cmd->hdr.return_code) {
4140 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4141 setparms->data.mode = SET_PROMISC_MODE_OFF;
4142 }
4143 card->info.promisc_mode = setparms->data.mode;
4144 return 0;
4145 }
4146
4147 void qeth_setadp_promisc_mode(struct qeth_card *card)
4148 {
4149 enum qeth_ipa_promisc_modes mode;
4150 struct net_device *dev = card->dev;
4151 struct qeth_cmd_buffer *iob;
4152 struct qeth_ipa_cmd *cmd;
4153
4154 QETH_CARD_TEXT(card, 4, "setprom");
4155
4156 if (((dev->flags & IFF_PROMISC) &&
4157 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4158 (!(dev->flags & IFF_PROMISC) &&
4159 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4160 return;
4161 mode = SET_PROMISC_MODE_OFF;
4162 if (dev->flags & IFF_PROMISC)
4163 mode = SET_PROMISC_MODE_ON;
4164 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4165
4166 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4167 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4168 if (!iob)
4169 return;
4170 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4171 cmd->data.setadapterparms.data.mode = mode;
4172 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4173 }
4174 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4175
4176 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4177 {
4178 struct qeth_card *card;
4179 char dbf_text[15];
4180
4181 card = dev->ml_priv;
4182
4183 QETH_CARD_TEXT(card, 4, "chgmtu");
4184 sprintf(dbf_text, "%8x", new_mtu);
4185 QETH_CARD_TEXT(card, 4, dbf_text);
4186
4187 if (!qeth_mtu_is_valid(card, new_mtu))
4188 return -EINVAL;
4189 dev->mtu = new_mtu;
4190 return 0;
4191 }
4192 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4193
4194 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4195 {
4196 struct qeth_card *card;
4197
4198 card = dev->ml_priv;
4199
4200 QETH_CARD_TEXT(card, 5, "getstat");
4201
4202 return &card->stats;
4203 }
4204 EXPORT_SYMBOL_GPL(qeth_get_stats);
4205
4206 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4207 struct qeth_reply *reply, unsigned long data)
4208 {
4209 struct qeth_ipa_cmd *cmd;
4210
4211 QETH_CARD_TEXT(card, 4, "chgmaccb");
4212
4213 cmd = (struct qeth_ipa_cmd *) data;
4214 if (!card->options.layer2 ||
4215 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4216 memcpy(card->dev->dev_addr,
4217 &cmd->data.setadapterparms.data.change_addr.addr,
4218 OSA_ADDR_LEN);
4219 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4220 }
4221 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4222 return 0;
4223 }
4224
4225 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4226 {
4227 int rc;
4228 struct qeth_cmd_buffer *iob;
4229 struct qeth_ipa_cmd *cmd;
4230
4231 QETH_CARD_TEXT(card, 4, "chgmac");
4232
4233 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4234 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4235 sizeof(struct qeth_change_addr));
4236 if (!iob)
4237 return -ENOMEM;
4238 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4239 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4240 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4241 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4242 card->dev->dev_addr, OSA_ADDR_LEN);
4243 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4244 NULL);
4245 return rc;
4246 }
4247 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4248
4249 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4250 struct qeth_reply *reply, unsigned long data)
4251 {
4252 struct qeth_ipa_cmd *cmd;
4253 struct qeth_set_access_ctrl *access_ctrl_req;
4254 int fallback = *(int *)reply->param;
4255
4256 QETH_CARD_TEXT(card, 4, "setaccb");
4257
4258 cmd = (struct qeth_ipa_cmd *) data;
4259 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4260 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4261 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4262 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4263 cmd->data.setadapterparms.hdr.return_code);
4264 if (cmd->data.setadapterparms.hdr.return_code !=
4265 SET_ACCESS_CTRL_RC_SUCCESS)
4266 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4267 card->gdev->dev.kobj.name,
4268 access_ctrl_req->subcmd_code,
4269 cmd->data.setadapterparms.hdr.return_code);
4270 switch (cmd->data.setadapterparms.hdr.return_code) {
4271 case SET_ACCESS_CTRL_RC_SUCCESS:
4272 if (card->options.isolation == ISOLATION_MODE_NONE) {
4273 dev_info(&card->gdev->dev,
4274 "QDIO data connection isolation is deactivated\n");
4275 } else {
4276 dev_info(&card->gdev->dev,
4277 "QDIO data connection isolation is activated\n");
4278 }
4279 break;
4280 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4281 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4282 "deactivated\n", dev_name(&card->gdev->dev));
4283 if (fallback)
4284 card->options.isolation = card->options.prev_isolation;
4285 break;
4286 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4287 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4288 " activated\n", dev_name(&card->gdev->dev));
4289 if (fallback)
4290 card->options.isolation = card->options.prev_isolation;
4291 break;
4292 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4293 dev_err(&card->gdev->dev, "Adapter does not "
4294 "support QDIO data connection isolation\n");
4295 break;
4296 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4297 dev_err(&card->gdev->dev,
4298 "Adapter is dedicated. "
4299 "QDIO data connection isolation not supported\n");
4300 if (fallback)
4301 card->options.isolation = card->options.prev_isolation;
4302 break;
4303 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4304 dev_err(&card->gdev->dev,
4305 "TSO does not permit QDIO data connection isolation\n");
4306 if (fallback)
4307 card->options.isolation = card->options.prev_isolation;
4308 break;
4309 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4310 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4311 "support reflective relay mode\n");
4312 if (fallback)
4313 card->options.isolation = card->options.prev_isolation;
4314 break;
4315 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4316 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4317 "enabled at the adjacent switch port");
4318 if (fallback)
4319 card->options.isolation = card->options.prev_isolation;
4320 break;
4321 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4322 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4323 "at the adjacent switch failed\n");
4324 break;
4325 default:
4326 /* this should never happen */
4327 if (fallback)
4328 card->options.isolation = card->options.prev_isolation;
4329 break;
4330 }
4331 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4332 return 0;
4333 }
4334
4335 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4336 enum qeth_ipa_isolation_modes isolation, int fallback)
4337 {
4338 int rc;
4339 struct qeth_cmd_buffer *iob;
4340 struct qeth_ipa_cmd *cmd;
4341 struct qeth_set_access_ctrl *access_ctrl_req;
4342
4343 QETH_CARD_TEXT(card, 4, "setacctl");
4344
4345 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4346 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4347
4348 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4349 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4350 sizeof(struct qeth_set_access_ctrl));
4351 if (!iob)
4352 return -ENOMEM;
4353 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4354 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4355 access_ctrl_req->subcmd_code = isolation;
4356
4357 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4358 &fallback);
4359 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4360 return rc;
4361 }
4362
4363 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4364 {
4365 int rc = 0;
4366
4367 QETH_CARD_TEXT(card, 4, "setactlo");
4368
4369 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4370 card->info.type == QETH_CARD_TYPE_OSX) &&
4371 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4372 rc = qeth_setadpparms_set_access_ctrl(card,
4373 card->options.isolation, fallback);
4374 if (rc) {
4375 QETH_DBF_MESSAGE(3,
4376 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4377 card->gdev->dev.kobj.name,
4378 rc);
4379 rc = -EOPNOTSUPP;
4380 }
4381 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4382 card->options.isolation = ISOLATION_MODE_NONE;
4383
4384 dev_err(&card->gdev->dev, "Adapter does not "
4385 "support QDIO data connection isolation\n");
4386 rc = -EOPNOTSUPP;
4387 }
4388 return rc;
4389 }
4390 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4391
4392 void qeth_tx_timeout(struct net_device *dev)
4393 {
4394 struct qeth_card *card;
4395
4396 card = dev->ml_priv;
4397 QETH_CARD_TEXT(card, 4, "txtimeo");
4398 card->stats.tx_errors++;
4399 qeth_schedule_recovery(card);
4400 }
4401 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4402
4403 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4404 {
4405 struct qeth_card *card = dev->ml_priv;
4406 int rc = 0;
4407
4408 switch (regnum) {
4409 case MII_BMCR: /* Basic mode control register */
4410 rc = BMCR_FULLDPLX;
4411 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4412 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4413 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4414 rc |= BMCR_SPEED100;
4415 break;
4416 case MII_BMSR: /* Basic mode status register */
4417 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4418 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4419 BMSR_100BASE4;
4420 break;
4421 case MII_PHYSID1: /* PHYS ID 1 */
4422 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4423 dev->dev_addr[2];
4424 rc = (rc >> 5) & 0xFFFF;
4425 break;
4426 case MII_PHYSID2: /* PHYS ID 2 */
4427 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4428 break;
4429 case MII_ADVERTISE: /* Advertisement control reg */
4430 rc = ADVERTISE_ALL;
4431 break;
4432 case MII_LPA: /* Link partner ability reg */
4433 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4434 LPA_100BASE4 | LPA_LPACK;
4435 break;
4436 case MII_EXPANSION: /* Expansion register */
4437 break;
4438 case MII_DCOUNTER: /* disconnect counter */
4439 break;
4440 case MII_FCSCOUNTER: /* false carrier counter */
4441 break;
4442 case MII_NWAYTEST: /* N-way auto-neg test register */
4443 break;
4444 case MII_RERRCOUNTER: /* rx error counter */
4445 rc = card->stats.rx_errors;
4446 break;
4447 case MII_SREVISION: /* silicon revision */
4448 break;
4449 case MII_RESV1: /* reserved 1 */
4450 break;
4451 case MII_LBRERROR: /* loopback, rx, bypass error */
4452 break;
4453 case MII_PHYADDR: /* physical address */
4454 break;
4455 case MII_RESV2: /* reserved 2 */
4456 break;
4457 case MII_TPISTATUS: /* TPI status for 10mbps */
4458 break;
4459 case MII_NCONFIG: /* network interface config */
4460 break;
4461 default:
4462 break;
4463 }
4464 return rc;
4465 }
4466
4467 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4468 struct qeth_cmd_buffer *iob, int len,
4469 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4470 unsigned long),
4471 void *reply_param)
4472 {
4473 u16 s1, s2;
4474
4475 QETH_CARD_TEXT(card, 4, "sendsnmp");
4476
4477 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4478 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4479 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4480 /* adjust PDU length fields in IPA_PDU_HEADER */
4481 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4482 s2 = (u32) len;
4483 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4484 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4485 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4486 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4487 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4488 reply_cb, reply_param);
4489 }
4490
4491 static int qeth_snmp_command_cb(struct qeth_card *card,
4492 struct qeth_reply *reply, unsigned long sdata)
4493 {
4494 struct qeth_ipa_cmd *cmd;
4495 struct qeth_arp_query_info *qinfo;
4496 struct qeth_snmp_cmd *snmp;
4497 unsigned char *data;
4498 __u16 data_len;
4499
4500 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4501
4502 cmd = (struct qeth_ipa_cmd *) sdata;
4503 data = (unsigned char *)((char *)cmd - reply->offset);
4504 qinfo = (struct qeth_arp_query_info *) reply->param;
4505 snmp = &cmd->data.setadapterparms.data.snmp;
4506
4507 if (cmd->hdr.return_code) {
4508 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4509 return 0;
4510 }
4511 if (cmd->data.setadapterparms.hdr.return_code) {
4512 cmd->hdr.return_code =
4513 cmd->data.setadapterparms.hdr.return_code;
4514 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4515 return 0;
4516 }
4517 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4518 if (cmd->data.setadapterparms.hdr.seq_no == 1)
4519 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4520 else
4521 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4522
4523 /* check if there is enough room in userspace */
4524 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4525 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4526 cmd->hdr.return_code = IPA_RC_ENOMEM;
4527 return 0;
4528 }
4529 QETH_CARD_TEXT_(card, 4, "snore%i",
4530 cmd->data.setadapterparms.hdr.used_total);
4531 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4532 cmd->data.setadapterparms.hdr.seq_no);
4533 /*copy entries to user buffer*/
4534 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4535 memcpy(qinfo->udata + qinfo->udata_offset,
4536 (char *)snmp,
4537 data_len + offsetof(struct qeth_snmp_cmd, data));
4538 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4539 } else {
4540 memcpy(qinfo->udata + qinfo->udata_offset,
4541 (char *)&snmp->request, data_len);
4542 }
4543 qinfo->udata_offset += data_len;
4544 /* check if all replies received ... */
4545 QETH_CARD_TEXT_(card, 4, "srtot%i",
4546 cmd->data.setadapterparms.hdr.used_total);
4547 QETH_CARD_TEXT_(card, 4, "srseq%i",
4548 cmd->data.setadapterparms.hdr.seq_no);
4549 if (cmd->data.setadapterparms.hdr.seq_no <
4550 cmd->data.setadapterparms.hdr.used_total)
4551 return 1;
4552 return 0;
4553 }
4554
4555 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4556 {
4557 struct qeth_cmd_buffer *iob;
4558 struct qeth_ipa_cmd *cmd;
4559 struct qeth_snmp_ureq *ureq;
4560 unsigned int req_len;
4561 struct qeth_arp_query_info qinfo = {0, };
4562 int rc = 0;
4563
4564 QETH_CARD_TEXT(card, 3, "snmpcmd");
4565
4566 if (card->info.guestlan)
4567 return -EOPNOTSUPP;
4568
4569 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4570 (!card->options.layer2)) {
4571 return -EOPNOTSUPP;
4572 }
4573 /* skip 4 bytes (data_len struct member) to get req_len */
4574 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4575 return -EFAULT;
4576 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4577 sizeof(struct qeth_ipacmd_hdr) -
4578 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4579 return -EINVAL;
4580 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4581 if (IS_ERR(ureq)) {
4582 QETH_CARD_TEXT(card, 2, "snmpnome");
4583 return PTR_ERR(ureq);
4584 }
4585 qinfo.udata_len = ureq->hdr.data_len;
4586 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4587 if (!qinfo.udata) {
4588 kfree(ureq);
4589 return -ENOMEM;
4590 }
4591 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4592
4593 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4594 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4595 if (!iob) {
4596 rc = -ENOMEM;
4597 goto out;
4598 }
4599 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4600 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4601 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4602 qeth_snmp_command_cb, (void *)&qinfo);
4603 if (rc)
4604 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4605 QETH_CARD_IFNAME(card), rc);
4606 else {
4607 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4608 rc = -EFAULT;
4609 }
4610 out:
4611 kfree(ureq);
4612 kfree(qinfo.udata);
4613 return rc;
4614 }
4615
4616 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4617 struct qeth_reply *reply, unsigned long data)
4618 {
4619 struct qeth_ipa_cmd *cmd;
4620 struct qeth_qoat_priv *priv;
4621 char *resdata;
4622 int resdatalen;
4623
4624 QETH_CARD_TEXT(card, 3, "qoatcb");
4625
4626 cmd = (struct qeth_ipa_cmd *)data;
4627 priv = (struct qeth_qoat_priv *)reply->param;
4628 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4629 resdata = (char *)data + 28;
4630
4631 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4632 cmd->hdr.return_code = IPA_RC_FFFF;
4633 return 0;
4634 }
4635
4636 memcpy((priv->buffer + priv->response_len), resdata,
4637 resdatalen);
4638 priv->response_len += resdatalen;
4639
4640 if (cmd->data.setadapterparms.hdr.seq_no <
4641 cmd->data.setadapterparms.hdr.used_total)
4642 return 1;
4643 return 0;
4644 }
4645
4646 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4647 {
4648 int rc = 0;
4649 struct qeth_cmd_buffer *iob;
4650 struct qeth_ipa_cmd *cmd;
4651 struct qeth_query_oat *oat_req;
4652 struct qeth_query_oat_data oat_data;
4653 struct qeth_qoat_priv priv;
4654 void __user *tmp;
4655
4656 QETH_CARD_TEXT(card, 3, "qoatcmd");
4657
4658 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4659 rc = -EOPNOTSUPP;
4660 goto out;
4661 }
4662
4663 if (copy_from_user(&oat_data, udata,
4664 sizeof(struct qeth_query_oat_data))) {
4665 rc = -EFAULT;
4666 goto out;
4667 }
4668
4669 priv.buffer_len = oat_data.buffer_len;
4670 priv.response_len = 0;
4671 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL);
4672 if (!priv.buffer) {
4673 rc = -ENOMEM;
4674 goto out;
4675 }
4676
4677 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4678 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4679 sizeof(struct qeth_query_oat));
4680 if (!iob) {
4681 rc = -ENOMEM;
4682 goto out_free;
4683 }
4684 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4685 oat_req = &cmd->data.setadapterparms.data.query_oat;
4686 oat_req->subcmd_code = oat_data.command;
4687
4688 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4689 &priv);
4690 if (!rc) {
4691 if (is_compat_task())
4692 tmp = compat_ptr(oat_data.ptr);
4693 else
4694 tmp = (void __user *)(unsigned long)oat_data.ptr;
4695
4696 if (copy_to_user(tmp, priv.buffer,
4697 priv.response_len)) {
4698 rc = -EFAULT;
4699 goto out_free;
4700 }
4701
4702 oat_data.response_len = priv.response_len;
4703
4704 if (copy_to_user(udata, &oat_data,
4705 sizeof(struct qeth_query_oat_data)))
4706 rc = -EFAULT;
4707 } else
4708 if (rc == IPA_RC_FFFF)
4709 rc = -EFAULT;
4710
4711 out_free:
4712 kfree(priv.buffer);
4713 out:
4714 return rc;
4715 }
4716
4717 static int qeth_query_card_info_cb(struct qeth_card *card,
4718 struct qeth_reply *reply, unsigned long data)
4719 {
4720 struct qeth_ipa_cmd *cmd;
4721 struct qeth_query_card_info *card_info;
4722 struct carrier_info *carrier_info;
4723
4724 QETH_CARD_TEXT(card, 2, "qcrdincb");
4725 carrier_info = (struct carrier_info *)reply->param;
4726 cmd = (struct qeth_ipa_cmd *)data;
4727 card_info = &cmd->data.setadapterparms.data.card_info;
4728 if (cmd->data.setadapterparms.hdr.return_code == 0) {
4729 carrier_info->card_type = card_info->card_type;
4730 carrier_info->port_mode = card_info->port_mode;
4731 carrier_info->port_speed = card_info->port_speed;
4732 }
4733
4734 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4735 return 0;
4736 }
4737
4738 static int qeth_query_card_info(struct qeth_card *card,
4739 struct carrier_info *carrier_info)
4740 {
4741 struct qeth_cmd_buffer *iob;
4742
4743 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4744 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4745 return -EOPNOTSUPP;
4746 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4747 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4748 if (!iob)
4749 return -ENOMEM;
4750 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4751 (void *)carrier_info);
4752 }
4753
4754 /**
4755 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4756 * @card: pointer to a qeth_card
4757 *
4758 * Returns
4759 * 0, if a MAC address has been set for the card's netdevice
4760 * a return code, for various error conditions
4761 */
4762 int qeth_vm_request_mac(struct qeth_card *card)
4763 {
4764 struct diag26c_mac_resp *response;
4765 struct diag26c_mac_req *request;
4766 struct ccw_dev_id id;
4767 int rc;
4768
4769 QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4770
4771 if (!card->dev)
4772 return -ENODEV;
4773
4774 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4775 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4776 if (!request || !response) {
4777 rc = -ENOMEM;
4778 goto out;
4779 }
4780
4781 ccw_device_get_id(CARD_DDEV(card), &id);
4782 request->resp_buf_len = sizeof(*response);
4783 request->resp_version = DIAG26C_VERSION2;
4784 request->op_code = DIAG26C_GET_MAC;
4785 request->devno = id.devno;
4786
4787 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4788 if (rc)
4789 goto out;
4790
4791 if (request->resp_buf_len < sizeof(*response) ||
4792 response->version != request->resp_version) {
4793 rc = -EIO;
4794 QETH_DBF_TEXT(SETUP, 2, "badresp");
4795 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4796 sizeof(request->resp_buf_len));
4797 } else if (!is_valid_ether_addr(response->mac)) {
4798 rc = -EINVAL;
4799 QETH_DBF_TEXT(SETUP, 2, "badmac");
4800 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4801 } else {
4802 ether_addr_copy(card->dev->dev_addr, response->mac);
4803 }
4804
4805 out:
4806 kfree(response);
4807 kfree(request);
4808 return rc;
4809 }
4810 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4811
4812 static int qeth_get_qdio_q_format(struct qeth_card *card)
4813 {
4814 if (card->info.type == QETH_CARD_TYPE_IQD)
4815 return QDIO_IQDIO_QFMT;
4816 else
4817 return QDIO_QETH_QFMT;
4818 }
4819
4820 static void qeth_determine_capabilities(struct qeth_card *card)
4821 {
4822 int rc;
4823 int length;
4824 char *prcd;
4825 struct ccw_device *ddev;
4826 int ddev_offline = 0;
4827
4828 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4829 ddev = CARD_DDEV(card);
4830 if (!ddev->online) {
4831 ddev_offline = 1;
4832 rc = ccw_device_set_online(ddev);
4833 if (rc) {
4834 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4835 goto out;
4836 }
4837 }
4838
4839 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4840 if (rc) {
4841 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4842 dev_name(&card->gdev->dev), rc);
4843 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4844 goto out_offline;
4845 }
4846 qeth_configure_unitaddr(card, prcd);
4847 if (ddev_offline)
4848 qeth_configure_blkt_default(card, prcd);
4849 kfree(prcd);
4850
4851 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4852 if (rc)
4853 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4854
4855 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4856 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4857 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4858 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4859 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4860 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4861 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4862 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4863 dev_info(&card->gdev->dev,
4864 "Completion Queueing supported\n");
4865 } else {
4866 card->options.cq = QETH_CQ_NOTAVAILABLE;
4867 }
4868
4869
4870 out_offline:
4871 if (ddev_offline == 1)
4872 ccw_device_set_offline(ddev);
4873 out:
4874 return;
4875 }
4876
4877 static void qeth_qdio_establish_cq(struct qeth_card *card,
4878 struct qdio_buffer **in_sbal_ptrs,
4879 void (**queue_start_poll)
4880 (struct ccw_device *, int,
4881 unsigned long))
4882 {
4883 int i;
4884
4885 if (card->options.cq == QETH_CQ_ENABLED) {
4886 int offset = QDIO_MAX_BUFFERS_PER_Q *
4887 (card->qdio.no_in_queues - 1);
4888 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4889 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4890 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4891 }
4892
4893 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4894 }
4895 }
4896
4897 static int qeth_qdio_establish(struct qeth_card *card)
4898 {
4899 struct qdio_initialize init_data;
4900 char *qib_param_field;
4901 struct qdio_buffer **in_sbal_ptrs;
4902 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4903 struct qdio_buffer **out_sbal_ptrs;
4904 int i, j, k;
4905 int rc = 0;
4906
4907 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4908
4909 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4910 GFP_KERNEL);
4911 if (!qib_param_field) {
4912 rc = -ENOMEM;
4913 goto out_free_nothing;
4914 }
4915
4916 qeth_create_qib_param_field(card, qib_param_field);
4917 qeth_create_qib_param_field_blkt(card, qib_param_field);
4918
4919 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4920 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4921 GFP_KERNEL);
4922 if (!in_sbal_ptrs) {
4923 rc = -ENOMEM;
4924 goto out_free_qib_param;
4925 }
4926 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4927 in_sbal_ptrs[i] = (struct qdio_buffer *)
4928 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4929 }
4930
4931 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4932 GFP_KERNEL);
4933 if (!queue_start_poll) {
4934 rc = -ENOMEM;
4935 goto out_free_in_sbals;
4936 }
4937 for (i = 0; i < card->qdio.no_in_queues; ++i)
4938 queue_start_poll[i] = card->discipline->start_poll;
4939
4940 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4941
4942 out_sbal_ptrs =
4943 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4944 sizeof(void *), GFP_KERNEL);
4945 if (!out_sbal_ptrs) {
4946 rc = -ENOMEM;
4947 goto out_free_queue_start_poll;
4948 }
4949 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4950 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4951 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4952 card->qdio.out_qs[i]->bufs[j]->buffer);
4953 }
4954
4955 memset(&init_data, 0, sizeof(struct qdio_initialize));
4956 init_data.cdev = CARD_DDEV(card);
4957 init_data.q_format = qeth_get_qdio_q_format(card);
4958 init_data.qib_param_field_format = 0;
4959 init_data.qib_param_field = qib_param_field;
4960 init_data.no_input_qs = card->qdio.no_in_queues;
4961 init_data.no_output_qs = card->qdio.no_out_queues;
4962 init_data.input_handler = card->discipline->input_handler;
4963 init_data.output_handler = card->discipline->output_handler;
4964 init_data.queue_start_poll_array = queue_start_poll;
4965 init_data.int_parm = (unsigned long) card;
4966 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
4967 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4968 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4969 init_data.scan_threshold =
4970 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4971
4972 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4973 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4974 rc = qdio_allocate(&init_data);
4975 if (rc) {
4976 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4977 goto out;
4978 }
4979 rc = qdio_establish(&init_data);
4980 if (rc) {
4981 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4982 qdio_free(CARD_DDEV(card));
4983 }
4984 }
4985
4986 switch (card->options.cq) {
4987 case QETH_CQ_ENABLED:
4988 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4989 break;
4990 case QETH_CQ_DISABLED:
4991 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4992 break;
4993 default:
4994 break;
4995 }
4996 out:
4997 kfree(out_sbal_ptrs);
4998 out_free_queue_start_poll:
4999 kfree(queue_start_poll);
5000 out_free_in_sbals:
5001 kfree(in_sbal_ptrs);
5002 out_free_qib_param:
5003 kfree(qib_param_field);
5004 out_free_nothing:
5005 return rc;
5006 }
5007
5008 static void qeth_core_free_card(struct qeth_card *card)
5009 {
5010
5011 QETH_DBF_TEXT(SETUP, 2, "freecrd");
5012 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5013 qeth_clean_channel(&card->read);
5014 qeth_clean_channel(&card->write);
5015 if (card->dev)
5016 free_netdev(card->dev);
5017 qeth_free_qdio_buffers(card);
5018 unregister_service_level(&card->qeth_service_level);
5019 kfree(card);
5020 }
5021
5022 void qeth_trace_features(struct qeth_card *card)
5023 {
5024 QETH_CARD_TEXT(card, 2, "features");
5025 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5026 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5027 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5028 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5029 sizeof(card->info.diagass_support));
5030 }
5031 EXPORT_SYMBOL_GPL(qeth_trace_features);
5032
5033 static struct ccw_device_id qeth_ids[] = {
5034 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5035 .driver_info = QETH_CARD_TYPE_OSD},
5036 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5037 .driver_info = QETH_CARD_TYPE_IQD},
5038 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5039 .driver_info = QETH_CARD_TYPE_OSN},
5040 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5041 .driver_info = QETH_CARD_TYPE_OSM},
5042 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5043 .driver_info = QETH_CARD_TYPE_OSX},
5044 {},
5045 };
5046 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5047
5048 static struct ccw_driver qeth_ccw_driver = {
5049 .driver = {
5050 .owner = THIS_MODULE,
5051 .name = "qeth",
5052 },
5053 .ids = qeth_ids,
5054 .probe = ccwgroup_probe_ccwdev,
5055 .remove = ccwgroup_remove_ccwdev,
5056 };
5057
5058 int qeth_core_hardsetup_card(struct qeth_card *card)
5059 {
5060 int retries = 3;
5061 int rc;
5062
5063 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5064 atomic_set(&card->force_alloc_skb, 0);
5065 qeth_update_from_chp_desc(card);
5066 retry:
5067 if (retries < 3)
5068 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5069 dev_name(&card->gdev->dev));
5070 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5071 ccw_device_set_offline(CARD_DDEV(card));
5072 ccw_device_set_offline(CARD_WDEV(card));
5073 ccw_device_set_offline(CARD_RDEV(card));
5074 qdio_free(CARD_DDEV(card));
5075 rc = ccw_device_set_online(CARD_RDEV(card));
5076 if (rc)
5077 goto retriable;
5078 rc = ccw_device_set_online(CARD_WDEV(card));
5079 if (rc)
5080 goto retriable;
5081 rc = ccw_device_set_online(CARD_DDEV(card));
5082 if (rc)
5083 goto retriable;
5084 retriable:
5085 if (rc == -ERESTARTSYS) {
5086 QETH_DBF_TEXT(SETUP, 2, "break1");
5087 return rc;
5088 } else if (rc) {
5089 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5090 if (--retries < 0)
5091 goto out;
5092 else
5093 goto retry;
5094 }
5095 qeth_determine_capabilities(card);
5096 qeth_init_tokens(card);
5097 qeth_init_func_level(card);
5098 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5099 if (rc == -ERESTARTSYS) {
5100 QETH_DBF_TEXT(SETUP, 2, "break2");
5101 return rc;
5102 } else if (rc) {
5103 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5104 if (--retries < 0)
5105 goto out;
5106 else
5107 goto retry;
5108 }
5109 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5110 if (rc == -ERESTARTSYS) {
5111 QETH_DBF_TEXT(SETUP, 2, "break3");
5112 return rc;
5113 } else if (rc) {
5114 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5115 if (--retries < 0)
5116 goto out;
5117 else
5118 goto retry;
5119 }
5120 card->read_or_write_problem = 0;
5121 rc = qeth_mpc_initialize(card);
5122 if (rc) {
5123 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5124 goto out;
5125 }
5126
5127 rc = qeth_send_startlan(card);
5128 if (rc) {
5129 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5130 if (rc == IPA_RC_LAN_OFFLINE) {
5131 dev_warn(&card->gdev->dev,
5132 "The LAN is offline\n");
5133 card->lan_online = 0;
5134 } else {
5135 rc = -ENODEV;
5136 goto out;
5137 }
5138 } else
5139 card->lan_online = 1;
5140
5141 card->options.ipa4.supported_funcs = 0;
5142 card->options.ipa6.supported_funcs = 0;
5143 card->options.adp.supported_funcs = 0;
5144 card->options.sbp.supported_funcs = 0;
5145 card->info.diagass_support = 0;
5146 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5147 if (rc == -ENOMEM)
5148 goto out;
5149 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5150 rc = qeth_query_setadapterparms(card);
5151 if (rc < 0) {
5152 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5153 goto out;
5154 }
5155 }
5156 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5157 rc = qeth_query_setdiagass(card);
5158 if (rc < 0) {
5159 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5160 goto out;
5161 }
5162 }
5163 return 0;
5164 out:
5165 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5166 "an error on the device\n");
5167 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5168 dev_name(&card->gdev->dev), rc);
5169 return rc;
5170 }
5171 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5172
5173 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5174 struct sk_buff *skb, int offset, int data_len)
5175 {
5176 struct page *page = virt_to_page(element->addr);
5177 unsigned int next_frag;
5178
5179 /* first fill the linear space */
5180 if (!skb->len) {
5181 unsigned int linear = min(data_len, skb_tailroom(skb));
5182
5183 skb_put_data(skb, element->addr + offset, linear);
5184 data_len -= linear;
5185 if (!data_len)
5186 return;
5187 offset += linear;
5188 /* fall through to add page frag for remaining data */
5189 }
5190
5191 next_frag = skb_shinfo(skb)->nr_frags;
5192 get_page(page);
5193 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5194 }
5195
5196 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5197 {
5198 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5199 }
5200
5201 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5202 struct qeth_qdio_buffer *qethbuffer,
5203 struct qdio_buffer_element **__element, int *__offset,
5204 struct qeth_hdr **hdr)
5205 {
5206 struct qdio_buffer_element *element = *__element;
5207 struct qdio_buffer *buffer = qethbuffer->buffer;
5208 int offset = *__offset;
5209 struct sk_buff *skb;
5210 int skb_len = 0;
5211 void *data_ptr;
5212 int data_len;
5213 int headroom = 0;
5214 int use_rx_sg = 0;
5215
5216 /* qeth_hdr must not cross element boundaries */
5217 while (element->length < offset + sizeof(struct qeth_hdr)) {
5218 if (qeth_is_last_sbale(element))
5219 return NULL;
5220 element++;
5221 offset = 0;
5222 }
5223 *hdr = element->addr + offset;
5224
5225 offset += sizeof(struct qeth_hdr);
5226 switch ((*hdr)->hdr.l2.id) {
5227 case QETH_HEADER_TYPE_LAYER2:
5228 skb_len = (*hdr)->hdr.l2.pkt_length;
5229 break;
5230 case QETH_HEADER_TYPE_LAYER3:
5231 skb_len = (*hdr)->hdr.l3.length;
5232 headroom = ETH_HLEN;
5233 break;
5234 case QETH_HEADER_TYPE_OSN:
5235 skb_len = (*hdr)->hdr.osn.pdu_length;
5236 headroom = sizeof(struct qeth_hdr);
5237 break;
5238 default:
5239 break;
5240 }
5241
5242 if (!skb_len)
5243 return NULL;
5244
5245 if (((skb_len >= card->options.rx_sg_cb) &&
5246 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5247 (!atomic_read(&card->force_alloc_skb))) ||
5248 (card->options.cq == QETH_CQ_ENABLED))
5249 use_rx_sg = 1;
5250
5251 if (use_rx_sg && qethbuffer->rx_skb) {
5252 /* QETH_CQ_ENABLED only: */
5253 skb = qethbuffer->rx_skb;
5254 qethbuffer->rx_skb = NULL;
5255 } else {
5256 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5257
5258 skb = dev_alloc_skb(linear + headroom);
5259 }
5260 if (!skb)
5261 goto no_mem;
5262 if (headroom)
5263 skb_reserve(skb, headroom);
5264
5265 data_ptr = element->addr + offset;
5266 while (skb_len) {
5267 data_len = min(skb_len, (int)(element->length - offset));
5268 if (data_len) {
5269 if (use_rx_sg)
5270 qeth_create_skb_frag(element, skb, offset,
5271 data_len);
5272 else
5273 skb_put_data(skb, data_ptr, data_len);
5274 }
5275 skb_len -= data_len;
5276 if (skb_len) {
5277 if (qeth_is_last_sbale(element)) {
5278 QETH_CARD_TEXT(card, 4, "unexeob");
5279 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5280 dev_kfree_skb_any(skb);
5281 card->stats.rx_errors++;
5282 return NULL;
5283 }
5284 element++;
5285 offset = 0;
5286 data_ptr = element->addr;
5287 } else {
5288 offset += data_len;
5289 }
5290 }
5291 *__element = element;
5292 *__offset = offset;
5293 if (use_rx_sg && card->options.performance_stats) {
5294 card->perf_stats.sg_skbs_rx++;
5295 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5296 }
5297 return skb;
5298 no_mem:
5299 if (net_ratelimit()) {
5300 QETH_CARD_TEXT(card, 2, "noskbmem");
5301 }
5302 card->stats.rx_dropped++;
5303 return NULL;
5304 }
5305 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5306
5307 int qeth_poll(struct napi_struct *napi, int budget)
5308 {
5309 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5310 int work_done = 0;
5311 struct qeth_qdio_buffer *buffer;
5312 int done;
5313 int new_budget = budget;
5314
5315 if (card->options.performance_stats) {
5316 card->perf_stats.inbound_cnt++;
5317 card->perf_stats.inbound_start_time = qeth_get_micros();
5318 }
5319
5320 while (1) {
5321 if (!card->rx.b_count) {
5322 card->rx.qdio_err = 0;
5323 card->rx.b_count = qdio_get_next_buffers(
5324 card->data.ccwdev, 0, &card->rx.b_index,
5325 &card->rx.qdio_err);
5326 if (card->rx.b_count <= 0) {
5327 card->rx.b_count = 0;
5328 break;
5329 }
5330 card->rx.b_element =
5331 &card->qdio.in_q->bufs[card->rx.b_index]
5332 .buffer->element[0];
5333 card->rx.e_offset = 0;
5334 }
5335
5336 while (card->rx.b_count) {
5337 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5338 if (!(card->rx.qdio_err &&
5339 qeth_check_qdio_errors(card, buffer->buffer,
5340 card->rx.qdio_err, "qinerr")))
5341 work_done +=
5342 card->discipline->process_rx_buffer(
5343 card, new_budget, &done);
5344 else
5345 done = 1;
5346
5347 if (done) {
5348 if (card->options.performance_stats)
5349 card->perf_stats.bufs_rec++;
5350 qeth_put_buffer_pool_entry(card,
5351 buffer->pool_entry);
5352 qeth_queue_input_buffer(card, card->rx.b_index);
5353 card->rx.b_count--;
5354 if (card->rx.b_count) {
5355 card->rx.b_index =
5356 (card->rx.b_index + 1) %
5357 QDIO_MAX_BUFFERS_PER_Q;
5358 card->rx.b_element =
5359 &card->qdio.in_q
5360 ->bufs[card->rx.b_index]
5361 .buffer->element[0];
5362 card->rx.e_offset = 0;
5363 }
5364 }
5365
5366 if (work_done >= budget)
5367 goto out;
5368 else
5369 new_budget = budget - work_done;
5370 }
5371 }
5372
5373 napi_complete_done(napi, work_done);
5374 if (qdio_start_irq(card->data.ccwdev, 0))
5375 napi_schedule(&card->napi);
5376 out:
5377 if (card->options.performance_stats)
5378 card->perf_stats.inbound_time += qeth_get_micros() -
5379 card->perf_stats.inbound_start_time;
5380 return work_done;
5381 }
5382 EXPORT_SYMBOL_GPL(qeth_poll);
5383
5384 int qeth_setassparms_cb(struct qeth_card *card,
5385 struct qeth_reply *reply, unsigned long data)
5386 {
5387 struct qeth_ipa_cmd *cmd;
5388
5389 QETH_CARD_TEXT(card, 4, "defadpcb");
5390
5391 cmd = (struct qeth_ipa_cmd *) data;
5392 if (cmd->hdr.return_code == 0) {
5393 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5394 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5395 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5396 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5397 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5398 }
5399 return 0;
5400 }
5401 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5402
5403 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5404 enum qeth_ipa_funcs ipa_func,
5405 __u16 cmd_code, __u16 len,
5406 enum qeth_prot_versions prot)
5407 {
5408 struct qeth_cmd_buffer *iob;
5409 struct qeth_ipa_cmd *cmd;
5410
5411 QETH_CARD_TEXT(card, 4, "getasscm");
5412 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5413
5414 if (iob) {
5415 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5416 cmd->data.setassparms.hdr.assist_no = ipa_func;
5417 cmd->data.setassparms.hdr.length = 8 + len;
5418 cmd->data.setassparms.hdr.command_code = cmd_code;
5419 cmd->data.setassparms.hdr.return_code = 0;
5420 cmd->data.setassparms.hdr.seq_no = 0;
5421 }
5422
5423 return iob;
5424 }
5425 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5426
5427 int qeth_send_setassparms(struct qeth_card *card,
5428 struct qeth_cmd_buffer *iob, __u16 len, long data,
5429 int (*reply_cb)(struct qeth_card *,
5430 struct qeth_reply *, unsigned long),
5431 void *reply_param)
5432 {
5433 int rc;
5434 struct qeth_ipa_cmd *cmd;
5435
5436 QETH_CARD_TEXT(card, 4, "sendassp");
5437
5438 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5439 if (len <= sizeof(__u32))
5440 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5441 else /* (len > sizeof(__u32)) */
5442 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5443
5444 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5445 return rc;
5446 }
5447 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5448
5449 int qeth_send_simple_setassparms(struct qeth_card *card,
5450 enum qeth_ipa_funcs ipa_func,
5451 __u16 cmd_code, long data)
5452 {
5453 int rc;
5454 int length = 0;
5455 struct qeth_cmd_buffer *iob;
5456
5457 QETH_CARD_TEXT(card, 4, "simassp4");
5458 if (data)
5459 length = sizeof(__u32);
5460 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5461 length, QETH_PROT_IPV4);
5462 if (!iob)
5463 return -ENOMEM;
5464 rc = qeth_send_setassparms(card, iob, length, data,
5465 qeth_setassparms_cb, NULL);
5466 return rc;
5467 }
5468 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5469
5470 static void qeth_unregister_dbf_views(void)
5471 {
5472 int x;
5473 for (x = 0; x < QETH_DBF_INFOS; x++) {
5474 debug_unregister(qeth_dbf[x].id);
5475 qeth_dbf[x].id = NULL;
5476 }
5477 }
5478
5479 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5480 {
5481 char dbf_txt_buf[32];
5482 va_list args;
5483
5484 if (!debug_level_enabled(id, level))
5485 return;
5486 va_start(args, fmt);
5487 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5488 va_end(args);
5489 debug_text_event(id, level, dbf_txt_buf);
5490 }
5491 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5492
5493 static int qeth_register_dbf_views(void)
5494 {
5495 int ret;
5496 int x;
5497
5498 for (x = 0; x < QETH_DBF_INFOS; x++) {
5499 /* register the areas */
5500 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5501 qeth_dbf[x].pages,
5502 qeth_dbf[x].areas,
5503 qeth_dbf[x].len);
5504 if (qeth_dbf[x].id == NULL) {
5505 qeth_unregister_dbf_views();
5506 return -ENOMEM;
5507 }
5508
5509 /* register a view */
5510 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5511 if (ret) {
5512 qeth_unregister_dbf_views();
5513 return ret;
5514 }
5515
5516 /* set a passing level */
5517 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5518 }
5519
5520 return 0;
5521 }
5522
5523 int qeth_core_load_discipline(struct qeth_card *card,
5524 enum qeth_discipline_id discipline)
5525 {
5526 int rc = 0;
5527
5528 mutex_lock(&qeth_mod_mutex);
5529 switch (discipline) {
5530 case QETH_DISCIPLINE_LAYER3:
5531 card->discipline = try_then_request_module(
5532 symbol_get(qeth_l3_discipline), "qeth_l3");
5533 break;
5534 case QETH_DISCIPLINE_LAYER2:
5535 card->discipline = try_then_request_module(
5536 symbol_get(qeth_l2_discipline), "qeth_l2");
5537 break;
5538 default:
5539 break;
5540 }
5541
5542 if (!card->discipline) {
5543 dev_err(&card->gdev->dev, "There is no kernel module to "
5544 "support discipline %d\n", discipline);
5545 rc = -EINVAL;
5546 }
5547 mutex_unlock(&qeth_mod_mutex);
5548 return rc;
5549 }
5550
5551 void qeth_core_free_discipline(struct qeth_card *card)
5552 {
5553 if (card->options.layer2)
5554 symbol_put(qeth_l2_discipline);
5555 else
5556 symbol_put(qeth_l3_discipline);
5557 card->discipline = NULL;
5558 }
5559
5560 const struct device_type qeth_generic_devtype = {
5561 .name = "qeth_generic",
5562 .groups = qeth_generic_attr_groups,
5563 };
5564 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5565
5566 static const struct device_type qeth_osn_devtype = {
5567 .name = "qeth_osn",
5568 .groups = qeth_osn_attr_groups,
5569 };
5570
5571 #define DBF_NAME_LEN 20
5572
5573 struct qeth_dbf_entry {
5574 char dbf_name[DBF_NAME_LEN];
5575 debug_info_t *dbf_info;
5576 struct list_head dbf_list;
5577 };
5578
5579 static LIST_HEAD(qeth_dbf_list);
5580 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5581
5582 static debug_info_t *qeth_get_dbf_entry(char *name)
5583 {
5584 struct qeth_dbf_entry *entry;
5585 debug_info_t *rc = NULL;
5586
5587 mutex_lock(&qeth_dbf_list_mutex);
5588 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5589 if (strcmp(entry->dbf_name, name) == 0) {
5590 rc = entry->dbf_info;
5591 break;
5592 }
5593 }
5594 mutex_unlock(&qeth_dbf_list_mutex);
5595 return rc;
5596 }
5597
5598 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5599 {
5600 struct qeth_dbf_entry *new_entry;
5601
5602 card->debug = debug_register(name, 2, 1, 8);
5603 if (!card->debug) {
5604 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5605 goto err;
5606 }
5607 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5608 goto err_dbg;
5609 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5610 if (!new_entry)
5611 goto err_dbg;
5612 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5613 new_entry->dbf_info = card->debug;
5614 mutex_lock(&qeth_dbf_list_mutex);
5615 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5616 mutex_unlock(&qeth_dbf_list_mutex);
5617
5618 return 0;
5619
5620 err_dbg:
5621 debug_unregister(card->debug);
5622 err:
5623 return -ENOMEM;
5624 }
5625
5626 static void qeth_clear_dbf_list(void)
5627 {
5628 struct qeth_dbf_entry *entry, *tmp;
5629
5630 mutex_lock(&qeth_dbf_list_mutex);
5631 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5632 list_del(&entry->dbf_list);
5633 debug_unregister(entry->dbf_info);
5634 kfree(entry);
5635 }
5636 mutex_unlock(&qeth_dbf_list_mutex);
5637 }
5638
5639 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5640 {
5641 struct qeth_card *card;
5642 struct device *dev;
5643 int rc;
5644 enum qeth_discipline_id enforced_disc;
5645 unsigned long flags;
5646 char dbf_name[DBF_NAME_LEN];
5647
5648 QETH_DBF_TEXT(SETUP, 2, "probedev");
5649
5650 dev = &gdev->dev;
5651 if (!get_device(dev))
5652 return -ENODEV;
5653
5654 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5655
5656 card = qeth_alloc_card();
5657 if (!card) {
5658 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5659 rc = -ENOMEM;
5660 goto err_dev;
5661 }
5662
5663 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5664 dev_name(&gdev->dev));
5665 card->debug = qeth_get_dbf_entry(dbf_name);
5666 if (!card->debug) {
5667 rc = qeth_add_dbf_entry(card, dbf_name);
5668 if (rc)
5669 goto err_card;
5670 }
5671
5672 card->read.ccwdev = gdev->cdev[0];
5673 card->write.ccwdev = gdev->cdev[1];
5674 card->data.ccwdev = gdev->cdev[2];
5675 dev_set_drvdata(&gdev->dev, card);
5676 card->gdev = gdev;
5677 gdev->cdev[0]->handler = qeth_irq;
5678 gdev->cdev[1]->handler = qeth_irq;
5679 gdev->cdev[2]->handler = qeth_irq;
5680
5681 qeth_determine_card_type(card);
5682 rc = qeth_setup_card(card);
5683 if (rc) {
5684 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5685 goto err_card;
5686 }
5687
5688 qeth_determine_capabilities(card);
5689 enforced_disc = qeth_enforce_discipline(card);
5690 switch (enforced_disc) {
5691 case QETH_DISCIPLINE_UNDETERMINED:
5692 gdev->dev.type = &qeth_generic_devtype;
5693 break;
5694 default:
5695 card->info.layer_enforced = true;
5696 rc = qeth_core_load_discipline(card, enforced_disc);
5697 if (rc)
5698 goto err_card;
5699
5700 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5701 ? card->discipline->devtype
5702 : &qeth_osn_devtype;
5703 rc = card->discipline->setup(card->gdev);
5704 if (rc)
5705 goto err_disc;
5706 break;
5707 }
5708
5709 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5710 list_add_tail(&card->list, &qeth_core_card_list.list);
5711 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5712 return 0;
5713
5714 err_disc:
5715 qeth_core_free_discipline(card);
5716 err_card:
5717 qeth_core_free_card(card);
5718 err_dev:
5719 put_device(dev);
5720 return rc;
5721 }
5722
5723 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5724 {
5725 unsigned long flags;
5726 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5727
5728 QETH_DBF_TEXT(SETUP, 2, "removedv");
5729
5730 if (card->discipline) {
5731 card->discipline->remove(gdev);
5732 qeth_core_free_discipline(card);
5733 }
5734
5735 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5736 list_del(&card->list);
5737 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5738 qeth_core_free_card(card);
5739 dev_set_drvdata(&gdev->dev, NULL);
5740 put_device(&gdev->dev);
5741 return;
5742 }
5743
5744 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5745 {
5746 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5747 int rc = 0;
5748 enum qeth_discipline_id def_discipline;
5749
5750 if (!card->discipline) {
5751 if (card->info.type == QETH_CARD_TYPE_IQD)
5752 def_discipline = QETH_DISCIPLINE_LAYER3;
5753 else
5754 def_discipline = QETH_DISCIPLINE_LAYER2;
5755 rc = qeth_core_load_discipline(card, def_discipline);
5756 if (rc)
5757 goto err;
5758 rc = card->discipline->setup(card->gdev);
5759 if (rc) {
5760 qeth_core_free_discipline(card);
5761 goto err;
5762 }
5763 }
5764 rc = card->discipline->set_online(gdev);
5765 err:
5766 return rc;
5767 }
5768
5769 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5770 {
5771 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5772 return card->discipline->set_offline(gdev);
5773 }
5774
5775 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5776 {
5777 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5778 qeth_set_allowed_threads(card, 0, 1);
5779 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5780 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5781 qeth_qdio_clear_card(card, 0);
5782 qeth_clear_qdio_buffers(card);
5783 qdio_free(CARD_DDEV(card));
5784 }
5785
5786 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5787 {
5788 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5789 if (card->discipline && card->discipline->freeze)
5790 return card->discipline->freeze(gdev);
5791 return 0;
5792 }
5793
5794 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5795 {
5796 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5797 if (card->discipline && card->discipline->thaw)
5798 return card->discipline->thaw(gdev);
5799 return 0;
5800 }
5801
5802 static int qeth_core_restore(struct ccwgroup_device *gdev)
5803 {
5804 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5805 if (card->discipline && card->discipline->restore)
5806 return card->discipline->restore(gdev);
5807 return 0;
5808 }
5809
5810 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5811 .driver = {
5812 .owner = THIS_MODULE,
5813 .name = "qeth",
5814 },
5815 .ccw_driver = &qeth_ccw_driver,
5816 .setup = qeth_core_probe_device,
5817 .remove = qeth_core_remove_device,
5818 .set_online = qeth_core_set_online,
5819 .set_offline = qeth_core_set_offline,
5820 .shutdown = qeth_core_shutdown,
5821 .prepare = NULL,
5822 .complete = NULL,
5823 .freeze = qeth_core_freeze,
5824 .thaw = qeth_core_thaw,
5825 .restore = qeth_core_restore,
5826 };
5827
5828 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5829 size_t count)
5830 {
5831 int err;
5832
5833 err = ccwgroup_create_dev(qeth_core_root_dev,
5834 &qeth_core_ccwgroup_driver, 3, buf);
5835
5836 return err ? err : count;
5837 }
5838 static DRIVER_ATTR_WO(group);
5839
5840 static struct attribute *qeth_drv_attrs[] = {
5841 &driver_attr_group.attr,
5842 NULL,
5843 };
5844 static struct attribute_group qeth_drv_attr_group = {
5845 .attrs = qeth_drv_attrs,
5846 };
5847 static const struct attribute_group *qeth_drv_attr_groups[] = {
5848 &qeth_drv_attr_group,
5849 NULL,
5850 };
5851
5852 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5853 {
5854 struct qeth_card *card = dev->ml_priv;
5855 struct mii_ioctl_data *mii_data;
5856 int rc = 0;
5857
5858 if (!card)
5859 return -ENODEV;
5860
5861 if (!qeth_card_hw_is_reachable(card))
5862 return -ENODEV;
5863
5864 if (card->info.type == QETH_CARD_TYPE_OSN)
5865 return -EPERM;
5866
5867 switch (cmd) {
5868 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5869 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5870 break;
5871 case SIOC_QETH_GET_CARD_TYPE:
5872 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5873 card->info.type == QETH_CARD_TYPE_OSM ||
5874 card->info.type == QETH_CARD_TYPE_OSX) &&
5875 !card->info.guestlan)
5876 return 1;
5877 else
5878 return 0;
5879 case SIOCGMIIPHY:
5880 mii_data = if_mii(rq);
5881 mii_data->phy_id = 0;
5882 break;
5883 case SIOCGMIIREG:
5884 mii_data = if_mii(rq);
5885 if (mii_data->phy_id != 0)
5886 rc = -EINVAL;
5887 else
5888 mii_data->val_out = qeth_mdio_read(dev,
5889 mii_data->phy_id, mii_data->reg_num);
5890 break;
5891 case SIOC_QETH_QUERY_OAT:
5892 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5893 break;
5894 default:
5895 if (card->discipline->do_ioctl)
5896 rc = card->discipline->do_ioctl(dev, rq, cmd);
5897 else
5898 rc = -EOPNOTSUPP;
5899 }
5900 if (rc)
5901 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5902 return rc;
5903 }
5904 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5905
5906 static struct {
5907 const char str[ETH_GSTRING_LEN];
5908 } qeth_ethtool_stats_keys[] = {
5909 /* 0 */{"rx skbs"},
5910 {"rx buffers"},
5911 {"tx skbs"},
5912 {"tx buffers"},
5913 {"tx skbs no packing"},
5914 {"tx buffers no packing"},
5915 {"tx skbs packing"},
5916 {"tx buffers packing"},
5917 {"tx sg skbs"},
5918 {"tx sg frags"},
5919 /* 10 */{"rx sg skbs"},
5920 {"rx sg frags"},
5921 {"rx sg page allocs"},
5922 {"tx large kbytes"},
5923 {"tx large count"},
5924 {"tx pk state ch n->p"},
5925 {"tx pk state ch p->n"},
5926 {"tx pk watermark low"},
5927 {"tx pk watermark high"},
5928 {"queue 0 buffer usage"},
5929 /* 20 */{"queue 1 buffer usage"},
5930 {"queue 2 buffer usage"},
5931 {"queue 3 buffer usage"},
5932 {"rx poll time"},
5933 {"rx poll count"},
5934 {"rx do_QDIO time"},
5935 {"rx do_QDIO count"},
5936 {"tx handler time"},
5937 {"tx handler count"},
5938 {"tx time"},
5939 /* 30 */{"tx count"},
5940 {"tx do_QDIO time"},
5941 {"tx do_QDIO count"},
5942 {"tx csum"},
5943 {"tx lin"},
5944 {"tx linfail"},
5945 {"cq handler count"},
5946 {"cq handler time"}
5947 };
5948
5949 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5950 {
5951 switch (stringset) {
5952 case ETH_SS_STATS:
5953 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5954 default:
5955 return -EINVAL;
5956 }
5957 }
5958 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5959
5960 void qeth_core_get_ethtool_stats(struct net_device *dev,
5961 struct ethtool_stats *stats, u64 *data)
5962 {
5963 struct qeth_card *card = dev->ml_priv;
5964 data[0] = card->stats.rx_packets -
5965 card->perf_stats.initial_rx_packets;
5966 data[1] = card->perf_stats.bufs_rec;
5967 data[2] = card->stats.tx_packets -
5968 card->perf_stats.initial_tx_packets;
5969 data[3] = card->perf_stats.bufs_sent;
5970 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5971 - card->perf_stats.skbs_sent_pack;
5972 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5973 data[6] = card->perf_stats.skbs_sent_pack;
5974 data[7] = card->perf_stats.bufs_sent_pack;
5975 data[8] = card->perf_stats.sg_skbs_sent;
5976 data[9] = card->perf_stats.sg_frags_sent;
5977 data[10] = card->perf_stats.sg_skbs_rx;
5978 data[11] = card->perf_stats.sg_frags_rx;
5979 data[12] = card->perf_stats.sg_alloc_page_rx;
5980 data[13] = (card->perf_stats.large_send_bytes >> 10);
5981 data[14] = card->perf_stats.large_send_cnt;
5982 data[15] = card->perf_stats.sc_dp_p;
5983 data[16] = card->perf_stats.sc_p_dp;
5984 data[17] = QETH_LOW_WATERMARK_PACK;
5985 data[18] = QETH_HIGH_WATERMARK_PACK;
5986 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5987 data[20] = (card->qdio.no_out_queues > 1) ?
5988 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5989 data[21] = (card->qdio.no_out_queues > 2) ?
5990 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5991 data[22] = (card->qdio.no_out_queues > 3) ?
5992 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5993 data[23] = card->perf_stats.inbound_time;
5994 data[24] = card->perf_stats.inbound_cnt;
5995 data[25] = card->perf_stats.inbound_do_qdio_time;
5996 data[26] = card->perf_stats.inbound_do_qdio_cnt;
5997 data[27] = card->perf_stats.outbound_handler_time;
5998 data[28] = card->perf_stats.outbound_handler_cnt;
5999 data[29] = card->perf_stats.outbound_time;
6000 data[30] = card->perf_stats.outbound_cnt;
6001 data[31] = card->perf_stats.outbound_do_qdio_time;
6002 data[32] = card->perf_stats.outbound_do_qdio_cnt;
6003 data[33] = card->perf_stats.tx_csum;
6004 data[34] = card->perf_stats.tx_lin;
6005 data[35] = card->perf_stats.tx_linfail;
6006 data[36] = card->perf_stats.cq_cnt;
6007 data[37] = card->perf_stats.cq_time;
6008 }
6009 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6010
6011 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6012 {
6013 switch (stringset) {
6014 case ETH_SS_STATS:
6015 memcpy(data, &qeth_ethtool_stats_keys,
6016 sizeof(qeth_ethtool_stats_keys));
6017 break;
6018 default:
6019 WARN_ON(1);
6020 break;
6021 }
6022 }
6023 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6024
6025 void qeth_core_get_drvinfo(struct net_device *dev,
6026 struct ethtool_drvinfo *info)
6027 {
6028 struct qeth_card *card = dev->ml_priv;
6029
6030 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
6031 sizeof(info->driver));
6032 strlcpy(info->version, "1.0", sizeof(info->version));
6033 strlcpy(info->fw_version, card->info.mcl_level,
6034 sizeof(info->fw_version));
6035 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6036 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6037 }
6038 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6039
6040 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6041 /* Autoneg and full-duplex are supported and advertised unconditionally. */
6042 /* Always advertise and support all speeds up to specified, and only one */
6043 /* specified port type. */
6044 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6045 int maxspeed, int porttype)
6046 {
6047 ethtool_link_ksettings_zero_link_mode(cmd, supported);
6048 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6049 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6050
6051 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6052 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6053
6054 switch (porttype) {
6055 case PORT_TP:
6056 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6057 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6058 break;
6059 case PORT_FIBRE:
6060 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6061 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6062 break;
6063 default:
6064 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6065 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6066 WARN_ON_ONCE(1);
6067 }
6068
6069 /* fallthrough from high to low, to select all legal speeds: */
6070 switch (maxspeed) {
6071 case SPEED_10000:
6072 ethtool_link_ksettings_add_link_mode(cmd, supported,
6073 10000baseT_Full);
6074 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6075 10000baseT_Full);
6076 case SPEED_1000:
6077 ethtool_link_ksettings_add_link_mode(cmd, supported,
6078 1000baseT_Full);
6079 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6080 1000baseT_Full);
6081 ethtool_link_ksettings_add_link_mode(cmd, supported,
6082 1000baseT_Half);
6083 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6084 1000baseT_Half);
6085 case SPEED_100:
6086 ethtool_link_ksettings_add_link_mode(cmd, supported,
6087 100baseT_Full);
6088 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6089 100baseT_Full);
6090 ethtool_link_ksettings_add_link_mode(cmd, supported,
6091 100baseT_Half);
6092 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6093 100baseT_Half);
6094 case SPEED_10:
6095 ethtool_link_ksettings_add_link_mode(cmd, supported,
6096 10baseT_Full);
6097 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6098 10baseT_Full);
6099 ethtool_link_ksettings_add_link_mode(cmd, supported,
6100 10baseT_Half);
6101 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6102 10baseT_Half);
6103 /* end fallthrough */
6104 break;
6105 default:
6106 ethtool_link_ksettings_add_link_mode(cmd, supported,
6107 10baseT_Full);
6108 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6109 10baseT_Full);
6110 ethtool_link_ksettings_add_link_mode(cmd, supported,
6111 10baseT_Half);
6112 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6113 10baseT_Half);
6114 WARN_ON_ONCE(1);
6115 }
6116 }
6117
6118 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6119 struct ethtool_link_ksettings *cmd)
6120 {
6121 struct qeth_card *card = netdev->ml_priv;
6122 enum qeth_link_types link_type;
6123 struct carrier_info carrier_info;
6124 int rc;
6125
6126 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6127 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6128 else
6129 link_type = card->info.link_type;
6130
6131 cmd->base.duplex = DUPLEX_FULL;
6132 cmd->base.autoneg = AUTONEG_ENABLE;
6133 cmd->base.phy_address = 0;
6134 cmd->base.mdio_support = 0;
6135 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6136 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6137
6138 switch (link_type) {
6139 case QETH_LINK_TYPE_FAST_ETH:
6140 case QETH_LINK_TYPE_LANE_ETH100:
6141 cmd->base.speed = SPEED_100;
6142 cmd->base.port = PORT_TP;
6143 break;
6144 case QETH_LINK_TYPE_GBIT_ETH:
6145 case QETH_LINK_TYPE_LANE_ETH1000:
6146 cmd->base.speed = SPEED_1000;
6147 cmd->base.port = PORT_FIBRE;
6148 break;
6149 case QETH_LINK_TYPE_10GBIT_ETH:
6150 cmd->base.speed = SPEED_10000;
6151 cmd->base.port = PORT_FIBRE;
6152 break;
6153 default:
6154 cmd->base.speed = SPEED_10;
6155 cmd->base.port = PORT_TP;
6156 }
6157 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6158
6159 /* Check if we can obtain more accurate information. */
6160 /* If QUERY_CARD_INFO command is not supported or fails, */
6161 /* just return the heuristics that was filled above. */
6162 if (!qeth_card_hw_is_reachable(card))
6163 return -ENODEV;
6164 rc = qeth_query_card_info(card, &carrier_info);
6165 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6166 return 0;
6167 if (rc) /* report error from the hardware operation */
6168 return rc;
6169 /* on success, fill in the information got from the hardware */
6170
6171 netdev_dbg(netdev,
6172 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6173 carrier_info.card_type,
6174 carrier_info.port_mode,
6175 carrier_info.port_speed);
6176
6177 /* Update attributes for which we've obtained more authoritative */
6178 /* information, leave the rest the way they where filled above. */
6179 switch (carrier_info.card_type) {
6180 case CARD_INFO_TYPE_1G_COPPER_A:
6181 case CARD_INFO_TYPE_1G_COPPER_B:
6182 cmd->base.port = PORT_TP;
6183 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6184 break;
6185 case CARD_INFO_TYPE_1G_FIBRE_A:
6186 case CARD_INFO_TYPE_1G_FIBRE_B:
6187 cmd->base.port = PORT_FIBRE;
6188 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6189 break;
6190 case CARD_INFO_TYPE_10G_FIBRE_A:
6191 case CARD_INFO_TYPE_10G_FIBRE_B:
6192 cmd->base.port = PORT_FIBRE;
6193 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6194 break;
6195 }
6196
6197 switch (carrier_info.port_mode) {
6198 case CARD_INFO_PORTM_FULLDUPLEX:
6199 cmd->base.duplex = DUPLEX_FULL;
6200 break;
6201 case CARD_INFO_PORTM_HALFDUPLEX:
6202 cmd->base.duplex = DUPLEX_HALF;
6203 break;
6204 }
6205
6206 switch (carrier_info.port_speed) {
6207 case CARD_INFO_PORTS_10M:
6208 cmd->base.speed = SPEED_10;
6209 break;
6210 case CARD_INFO_PORTS_100M:
6211 cmd->base.speed = SPEED_100;
6212 break;
6213 case CARD_INFO_PORTS_1G:
6214 cmd->base.speed = SPEED_1000;
6215 break;
6216 case CARD_INFO_PORTS_10G:
6217 cmd->base.speed = SPEED_10000;
6218 break;
6219 }
6220
6221 return 0;
6222 }
6223 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6224
6225 /* Callback to handle checksum offload command reply from OSA card.
6226 * Verify that required features have been enabled on the card.
6227 * Return error in hdr->return_code as this value is checked by caller.
6228 *
6229 * Always returns zero to indicate no further messages from the OSA card.
6230 */
6231 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6232 struct qeth_reply *reply,
6233 unsigned long data)
6234 {
6235 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6236 struct qeth_checksum_cmd *chksum_cb =
6237 (struct qeth_checksum_cmd *)reply->param;
6238
6239 QETH_CARD_TEXT(card, 4, "chkdoccb");
6240 if (cmd->hdr.return_code)
6241 return 0;
6242
6243 memset(chksum_cb, 0, sizeof(*chksum_cb));
6244 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6245 chksum_cb->supported =
6246 cmd->data.setassparms.data.chksum.supported;
6247 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6248 }
6249 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6250 chksum_cb->supported =
6251 cmd->data.setassparms.data.chksum.supported;
6252 chksum_cb->enabled =
6253 cmd->data.setassparms.data.chksum.enabled;
6254 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6255 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6256 }
6257 return 0;
6258 }
6259
6260 /* Send command to OSA card and check results. */
6261 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6262 enum qeth_ipa_funcs ipa_func,
6263 __u16 cmd_code, long data,
6264 struct qeth_checksum_cmd *chksum_cb)
6265 {
6266 struct qeth_cmd_buffer *iob;
6267 int rc = -ENOMEM;
6268
6269 QETH_CARD_TEXT(card, 4, "chkdocmd");
6270 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6271 sizeof(__u32), QETH_PROT_IPV4);
6272 if (iob)
6273 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6274 qeth_ipa_checksum_run_cmd_cb,
6275 chksum_cb);
6276 return rc;
6277 }
6278
6279 static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
6280 {
6281 const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR |
6282 QETH_IPA_CHECKSUM_UDP |
6283 QETH_IPA_CHECKSUM_TCP;
6284 struct qeth_checksum_cmd chksum_cb;
6285 int rc;
6286
6287 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6288 &chksum_cb);
6289 if (!rc) {
6290 if ((required_features & chksum_cb.supported) !=
6291 required_features)
6292 rc = -EIO;
6293 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6294 cstype == IPA_INBOUND_CHECKSUM)
6295 dev_warn(&card->gdev->dev,
6296 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6297 QETH_CARD_IFNAME(card));
6298 }
6299 if (rc) {
6300 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6301 dev_warn(&card->gdev->dev,
6302 "Starting HW checksumming for %s failed, using SW checksumming\n",
6303 QETH_CARD_IFNAME(card));
6304 return rc;
6305 }
6306 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6307 chksum_cb.supported, &chksum_cb);
6308 if (!rc) {
6309 if ((required_features & chksum_cb.enabled) !=
6310 required_features)
6311 rc = -EIO;
6312 }
6313 if (rc) {
6314 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6315 dev_warn(&card->gdev->dev,
6316 "Enabling HW checksumming for %s failed, using SW checksumming\n",
6317 QETH_CARD_IFNAME(card));
6318 return rc;
6319 }
6320
6321 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
6322 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
6323 return 0;
6324 }
6325
6326 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
6327 {
6328 int rc = (on) ? qeth_send_checksum_on(card, cstype)
6329 : qeth_send_simple_setassparms(card, cstype,
6330 IPA_CMD_ASS_STOP, 0);
6331 return rc ? -EIO : 0;
6332 }
6333
6334 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6335 {
6336 int rc;
6337
6338 QETH_CARD_TEXT(card, 3, "sttso");
6339
6340 if (on) {
6341 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6342 IPA_CMD_ASS_START, 0);
6343 if (rc) {
6344 dev_warn(&card->gdev->dev,
6345 "Starting outbound TCP segmentation offload for %s failed\n",
6346 QETH_CARD_IFNAME(card));
6347 return -EIO;
6348 }
6349 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6350 } else {
6351 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6352 IPA_CMD_ASS_STOP, 0);
6353 }
6354 return rc;
6355 }
6356
6357 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO)
6358
6359 /**
6360 * qeth_recover_features() - Restore device features after recovery
6361 * @dev: the recovering net_device
6362 *
6363 * Caller must hold rtnl lock.
6364 */
6365 void qeth_recover_features(struct net_device *dev)
6366 {
6367 netdev_features_t features = dev->features;
6368 struct qeth_card *card = dev->ml_priv;
6369
6370 /* force-off any feature that needs an IPA sequence.
6371 * netdev_update_features() will restart them.
6372 */
6373 dev->features &= ~QETH_HW_FEATURES;
6374 netdev_update_features(dev);
6375
6376 if (features == dev->features)
6377 return;
6378 dev_warn(&card->gdev->dev,
6379 "Device recovery failed to restore all offload features\n");
6380 }
6381 EXPORT_SYMBOL_GPL(qeth_recover_features);
6382
6383 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6384 {
6385 struct qeth_card *card = dev->ml_priv;
6386 netdev_features_t changed = dev->features ^ features;
6387 int rc = 0;
6388
6389 QETH_DBF_TEXT(SETUP, 2, "setfeat");
6390 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6391
6392 if ((changed & NETIF_F_IP_CSUM)) {
6393 rc = qeth_set_ipa_csum(card,
6394 features & NETIF_F_IP_CSUM ? 1 : 0,
6395 IPA_OUTBOUND_CHECKSUM);
6396 if (rc)
6397 changed ^= NETIF_F_IP_CSUM;
6398 }
6399 if ((changed & NETIF_F_RXCSUM)) {
6400 rc = qeth_set_ipa_csum(card,
6401 features & NETIF_F_RXCSUM ? 1 : 0,
6402 IPA_INBOUND_CHECKSUM);
6403 if (rc)
6404 changed ^= NETIF_F_RXCSUM;
6405 }
6406 if ((changed & NETIF_F_TSO)) {
6407 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6408 if (rc)
6409 changed ^= NETIF_F_TSO;
6410 }
6411
6412 /* everything changed successfully? */
6413 if ((dev->features ^ features) == changed)
6414 return 0;
6415 /* something went wrong. save changed features and return error */
6416 dev->features ^= changed;
6417 return -EIO;
6418 }
6419 EXPORT_SYMBOL_GPL(qeth_set_features);
6420
6421 netdev_features_t qeth_fix_features(struct net_device *dev,
6422 netdev_features_t features)
6423 {
6424 struct qeth_card *card = dev->ml_priv;
6425
6426 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6427 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6428 features &= ~NETIF_F_IP_CSUM;
6429 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6430 features &= ~NETIF_F_RXCSUM;
6431 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6432 features &= ~NETIF_F_TSO;
6433 /* if the card isn't up, remove features that require hw changes */
6434 if (card->state == CARD_STATE_DOWN ||
6435 card->state == CARD_STATE_RECOVER)
6436 features &= ~QETH_HW_FEATURES;
6437 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6438 return features;
6439 }
6440 EXPORT_SYMBOL_GPL(qeth_fix_features);
6441
6442 static int __init qeth_core_init(void)
6443 {
6444 int rc;
6445
6446 pr_info("loading core functions\n");
6447 INIT_LIST_HEAD(&qeth_core_card_list.list);
6448 INIT_LIST_HEAD(&qeth_dbf_list);
6449 rwlock_init(&qeth_core_card_list.rwlock);
6450 mutex_init(&qeth_mod_mutex);
6451
6452 qeth_wq = create_singlethread_workqueue("qeth_wq");
6453
6454 rc = qeth_register_dbf_views();
6455 if (rc)
6456 goto out_err;
6457 qeth_core_root_dev = root_device_register("qeth");
6458 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6459 if (rc)
6460 goto register_err;
6461 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6462 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6463 if (!qeth_core_header_cache) {
6464 rc = -ENOMEM;
6465 goto slab_err;
6466 }
6467 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6468 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6469 if (!qeth_qdio_outbuf_cache) {
6470 rc = -ENOMEM;
6471 goto cqslab_err;
6472 }
6473 rc = ccw_driver_register(&qeth_ccw_driver);
6474 if (rc)
6475 goto ccw_err;
6476 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6477 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6478 if (rc)
6479 goto ccwgroup_err;
6480
6481 return 0;
6482
6483 ccwgroup_err:
6484 ccw_driver_unregister(&qeth_ccw_driver);
6485 ccw_err:
6486 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6487 cqslab_err:
6488 kmem_cache_destroy(qeth_core_header_cache);
6489 slab_err:
6490 root_device_unregister(qeth_core_root_dev);
6491 register_err:
6492 qeth_unregister_dbf_views();
6493 out_err:
6494 pr_err("Initializing the qeth device driver failed\n");
6495 return rc;
6496 }
6497
6498 static void __exit qeth_core_exit(void)
6499 {
6500 qeth_clear_dbf_list();
6501 destroy_workqueue(qeth_wq);
6502 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6503 ccw_driver_unregister(&qeth_ccw_driver);
6504 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6505 kmem_cache_destroy(qeth_core_header_cache);
6506 root_device_unregister(qeth_core_root_dev);
6507 qeth_unregister_dbf_views();
6508 pr_info("core functions removed\n");
6509 }
6510
6511 module_init(qeth_core_init);
6512 module_exit(qeth_core_exit);
6513 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6514 MODULE_DESCRIPTION("qeth core functions");
6515 MODULE_LICENSE("GPL");
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