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Linux 4.1.16
[linux/fpc-iii.git] / drivers / s390 / net / qeth_core_main.c
blob3466d3cb76474c2092cdd1d679d3a7704e793984
1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/ip.h>
18 #include <linux/tcp.h>
19 #include <linux/mii.h>
20 #include <linux/kthread.h>
21 #include <linux/slab.h>
22 #include <net/iucv/af_iucv.h>
23 #include <net/dsfield.h>
24
25 #include <asm/ebcdic.h>
26 #include <asm/chpid.h>
27 #include <asm/io.h>
28 #include <asm/sysinfo.h>
29 #include <asm/compat.h>
30
31 #include "qeth_core.h"
32
33 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
34 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
35 /* N P A M L V H */
36 [QETH_DBF_SETUP] = {"qeth_setup",
37 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
38 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
39 &debug_sprintf_view, NULL},
40 [QETH_DBF_CTRL] = {"qeth_control",
41 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
42 };
43 EXPORT_SYMBOL_GPL(qeth_dbf);
44
45 struct qeth_card_list_struct qeth_core_card_list;
46 EXPORT_SYMBOL_GPL(qeth_core_card_list);
47 struct kmem_cache *qeth_core_header_cache;
48 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
49 static struct kmem_cache *qeth_qdio_outbuf_cache;
50
51 static struct device *qeth_core_root_dev;
52 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
53 static struct lock_class_key qdio_out_skb_queue_key;
54 static struct mutex qeth_mod_mutex;
55
56 static void qeth_send_control_data_cb(struct qeth_channel *,
57 struct qeth_cmd_buffer *);
58 static int qeth_issue_next_read(struct qeth_card *);
59 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
60 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
61 static void qeth_free_buffer_pool(struct qeth_card *);
62 static int qeth_qdio_establish(struct qeth_card *);
63 static void qeth_free_qdio_buffers(struct qeth_card *);
64 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
65 struct qeth_qdio_out_buffer *buf,
66 enum iucv_tx_notify notification);
67 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
68 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
69 struct qeth_qdio_out_buffer *buf,
70 enum qeth_qdio_buffer_states newbufstate);
71 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
72
73 struct workqueue_struct *qeth_wq;
74 EXPORT_SYMBOL_GPL(qeth_wq);
75
76 int qeth_card_hw_is_reachable(struct qeth_card *card)
77 {
78 return (card->state == CARD_STATE_SOFTSETUP) ||
79 (card->state == CARD_STATE_UP);
80 }
81 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
82
83 static void qeth_close_dev_handler(struct work_struct *work)
84 {
85 struct qeth_card *card;
86
87 card = container_of(work, struct qeth_card, close_dev_work);
88 QETH_CARD_TEXT(card, 2, "cldevhdl");
89 rtnl_lock();
90 dev_close(card->dev);
91 rtnl_unlock();
92 ccwgroup_set_offline(card->gdev);
93 }
94
95 void qeth_close_dev(struct qeth_card *card)
96 {
97 QETH_CARD_TEXT(card, 2, "cldevsubm");
98 queue_work(qeth_wq, &card->close_dev_work);
99 }
100 EXPORT_SYMBOL_GPL(qeth_close_dev);
101
102 static inline const char *qeth_get_cardname(struct qeth_card *card)
103 {
104 if (card->info.guestlan) {
105 switch (card->info.type) {
106 case QETH_CARD_TYPE_OSD:
107 return " Virtual NIC QDIO";
108 case QETH_CARD_TYPE_IQD:
109 return " Virtual NIC Hiper";
110 case QETH_CARD_TYPE_OSM:
111 return " Virtual NIC QDIO - OSM";
112 case QETH_CARD_TYPE_OSX:
113 return " Virtual NIC QDIO - OSX";
114 default:
115 return " unknown";
116 }
117 } else {
118 switch (card->info.type) {
119 case QETH_CARD_TYPE_OSD:
120 return " OSD Express";
121 case QETH_CARD_TYPE_IQD:
122 return " HiperSockets";
123 case QETH_CARD_TYPE_OSN:
124 return " OSN QDIO";
125 case QETH_CARD_TYPE_OSM:
126 return " OSM QDIO";
127 case QETH_CARD_TYPE_OSX:
128 return " OSX QDIO";
129 default:
130 return " unknown";
131 }
132 }
133 return " n/a";
134 }
135
136 /* max length to be returned: 14 */
137 const char *qeth_get_cardname_short(struct qeth_card *card)
138 {
139 if (card->info.guestlan) {
140 switch (card->info.type) {
141 case QETH_CARD_TYPE_OSD:
142 return "Virt.NIC QDIO";
143 case QETH_CARD_TYPE_IQD:
144 return "Virt.NIC Hiper";
145 case QETH_CARD_TYPE_OSM:
146 return "Virt.NIC OSM";
147 case QETH_CARD_TYPE_OSX:
148 return "Virt.NIC OSX";
149 default:
150 return "unknown";
151 }
152 } else {
153 switch (card->info.type) {
154 case QETH_CARD_TYPE_OSD:
155 switch (card->info.link_type) {
156 case QETH_LINK_TYPE_FAST_ETH:
157 return "OSD_100";
158 case QETH_LINK_TYPE_HSTR:
159 return "HSTR";
160 case QETH_LINK_TYPE_GBIT_ETH:
161 return "OSD_1000";
162 case QETH_LINK_TYPE_10GBIT_ETH:
163 return "OSD_10GIG";
164 case QETH_LINK_TYPE_LANE_ETH100:
165 return "OSD_FE_LANE";
166 case QETH_LINK_TYPE_LANE_TR:
167 return "OSD_TR_LANE";
168 case QETH_LINK_TYPE_LANE_ETH1000:
169 return "OSD_GbE_LANE";
170 case QETH_LINK_TYPE_LANE:
171 return "OSD_ATM_LANE";
172 default:
173 return "OSD_Express";
174 }
175 case QETH_CARD_TYPE_IQD:
176 return "HiperSockets";
177 case QETH_CARD_TYPE_OSN:
178 return "OSN";
179 case QETH_CARD_TYPE_OSM:
180 return "OSM_1000";
181 case QETH_CARD_TYPE_OSX:
182 return "OSX_10GIG";
183 default:
184 return "unknown";
185 }
186 }
187 return "n/a";
188 }
189
190 void qeth_set_recovery_task(struct qeth_card *card)
191 {
192 card->recovery_task = current;
193 }
194 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
195
196 void qeth_clear_recovery_task(struct qeth_card *card)
197 {
198 card->recovery_task = NULL;
199 }
200 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
201
202 static bool qeth_is_recovery_task(const struct qeth_card *card)
203 {
204 return card->recovery_task == current;
205 }
206
207 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
208 int clear_start_mask)
209 {
210 unsigned long flags;
211
212 spin_lock_irqsave(&card->thread_mask_lock, flags);
213 card->thread_allowed_mask = threads;
214 if (clear_start_mask)
215 card->thread_start_mask &= threads;
216 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
217 wake_up(&card->wait_q);
218 }
219 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
220
221 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
222 {
223 unsigned long flags;
224 int rc = 0;
225
226 spin_lock_irqsave(&card->thread_mask_lock, flags);
227 rc = (card->thread_running_mask & threads);
228 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
229 return rc;
230 }
231 EXPORT_SYMBOL_GPL(qeth_threads_running);
232
233 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
234 {
235 if (qeth_is_recovery_task(card))
236 return 0;
237 return wait_event_interruptible(card->wait_q,
238 qeth_threads_running(card, threads) == 0);
239 }
240 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
241
242 void qeth_clear_working_pool_list(struct qeth_card *card)
243 {
244 struct qeth_buffer_pool_entry *pool_entry, *tmp;
245
246 QETH_CARD_TEXT(card, 5, "clwrklst");
247 list_for_each_entry_safe(pool_entry, tmp,
248 &card->qdio.in_buf_pool.entry_list, list){
249 list_del(&pool_entry->list);
250 }
251 }
252 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
253
254 static int qeth_alloc_buffer_pool(struct qeth_card *card)
255 {
256 struct qeth_buffer_pool_entry *pool_entry;
257 void *ptr;
258 int i, j;
259
260 QETH_CARD_TEXT(card, 5, "alocpool");
261 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
262 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
263 if (!pool_entry) {
264 qeth_free_buffer_pool(card);
265 return -ENOMEM;
266 }
267 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
268 ptr = (void *) __get_free_page(GFP_KERNEL);
269 if (!ptr) {
270 while (j > 0)
271 free_page((unsigned long)
272 pool_entry->elements[--j]);
273 kfree(pool_entry);
274 qeth_free_buffer_pool(card);
275 return -ENOMEM;
276 }
277 pool_entry->elements[j] = ptr;
278 }
279 list_add(&pool_entry->init_list,
280 &card->qdio.init_pool.entry_list);
281 }
282 return 0;
283 }
284
285 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
286 {
287 QETH_CARD_TEXT(card, 2, "realcbp");
288
289 if ((card->state != CARD_STATE_DOWN) &&
290 (card->state != CARD_STATE_RECOVER))
291 return -EPERM;
292
293 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
294 qeth_clear_working_pool_list(card);
295 qeth_free_buffer_pool(card);
296 card->qdio.in_buf_pool.buf_count = bufcnt;
297 card->qdio.init_pool.buf_count = bufcnt;
298 return qeth_alloc_buffer_pool(card);
299 }
300 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
301
302 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
303 {
304 if (!q)
305 return;
306
307 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
308 kfree(q);
309 }
310
311 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
312 {
313 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
314 int i;
315
316 if (!q)
317 return NULL;
318
319 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
320 kfree(q);
321 return NULL;
322 }
323
324 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
325 q->bufs[i].buffer = q->qdio_bufs[i];
326
327 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
328 return q;
329 }
330
331 static inline int qeth_cq_init(struct qeth_card *card)
332 {
333 int rc;
334
335 if (card->options.cq == QETH_CQ_ENABLED) {
336 QETH_DBF_TEXT(SETUP, 2, "cqinit");
337 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
338 QDIO_MAX_BUFFERS_PER_Q);
339 card->qdio.c_q->next_buf_to_init = 127;
340 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
341 card->qdio.no_in_queues - 1, 0,
342 127);
343 if (rc) {
344 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
345 goto out;
346 }
347 }
348 rc = 0;
349 out:
350 return rc;
351 }
352
353 static inline int qeth_alloc_cq(struct qeth_card *card)
354 {
355 int rc;
356
357 if (card->options.cq == QETH_CQ_ENABLED) {
358 int i;
359 struct qdio_outbuf_state *outbuf_states;
360
361 QETH_DBF_TEXT(SETUP, 2, "cqon");
362 card->qdio.c_q = qeth_alloc_qdio_queue();
363 if (!card->qdio.c_q) {
364 rc = -1;
365 goto kmsg_out;
366 }
367 card->qdio.no_in_queues = 2;
368 card->qdio.out_bufstates =
369 kzalloc(card->qdio.no_out_queues *
370 QDIO_MAX_BUFFERS_PER_Q *
371 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
372 outbuf_states = card->qdio.out_bufstates;
373 if (outbuf_states == NULL) {
374 rc = -1;
375 goto free_cq_out;
376 }
377 for (i = 0; i < card->qdio.no_out_queues; ++i) {
378 card->qdio.out_qs[i]->bufstates = outbuf_states;
379 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
380 }
381 } else {
382 QETH_DBF_TEXT(SETUP, 2, "nocq");
383 card->qdio.c_q = NULL;
384 card->qdio.no_in_queues = 1;
385 }
386 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
387 rc = 0;
388 out:
389 return rc;
390 free_cq_out:
391 qeth_free_qdio_queue(card->qdio.c_q);
392 card->qdio.c_q = NULL;
393 kmsg_out:
394 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
395 goto out;
396 }
397
398 static inline void qeth_free_cq(struct qeth_card *card)
399 {
400 if (card->qdio.c_q) {
401 --card->qdio.no_in_queues;
402 qeth_free_qdio_queue(card->qdio.c_q);
403 card->qdio.c_q = NULL;
404 }
405 kfree(card->qdio.out_bufstates);
406 card->qdio.out_bufstates = NULL;
407 }
408
409 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
410 int delayed) {
411 enum iucv_tx_notify n;
412
413 switch (sbalf15) {
414 case 0:
415 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
416 break;
417 case 4:
418 case 16:
419 case 17:
420 case 18:
421 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
422 TX_NOTIFY_UNREACHABLE;
423 break;
424 default:
425 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
426 TX_NOTIFY_GENERALERROR;
427 break;
428 }
429
430 return n;
431 }
432
433 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
434 int bidx, int forced_cleanup)
435 {
436 if (q->card->options.cq != QETH_CQ_ENABLED)
437 return;
438
439 if (q->bufs[bidx]->next_pending != NULL) {
440 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
441 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
442
443 while (c) {
444 if (forced_cleanup ||
445 atomic_read(&c->state) ==
446 QETH_QDIO_BUF_HANDLED_DELAYED) {
447 struct qeth_qdio_out_buffer *f = c;
448 QETH_CARD_TEXT(f->q->card, 5, "fp");
449 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
450 /* release here to avoid interleaving between
451 outbound tasklet and inbound tasklet
452 regarding notifications and lifecycle */
453 qeth_release_skbs(c);
454
455 c = f->next_pending;
456 WARN_ON_ONCE(head->next_pending != f);
457 head->next_pending = c;
458 kmem_cache_free(qeth_qdio_outbuf_cache, f);
459 } else {
460 head = c;
461 c = c->next_pending;
462 }
463
464 }
465 }
466 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
467 QETH_QDIO_BUF_HANDLED_DELAYED)) {
468 /* for recovery situations */
469 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
470 qeth_init_qdio_out_buf(q, bidx);
471 QETH_CARD_TEXT(q->card, 2, "clprecov");
472 }
473 }
474
475
476 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
477 unsigned long phys_aob_addr) {
478 struct qaob *aob;
479 struct qeth_qdio_out_buffer *buffer;
480 enum iucv_tx_notify notification;
481
482 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
483 QETH_CARD_TEXT(card, 5, "haob");
484 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
485 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
486 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
487
488 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
489 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
490 notification = TX_NOTIFY_OK;
491 } else {
492 WARN_ON_ONCE(atomic_read(&buffer->state) !=
493 QETH_QDIO_BUF_PENDING);
494 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
495 notification = TX_NOTIFY_DELAYED_OK;
496 }
497
498 if (aob->aorc != 0) {
499 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
500 notification = qeth_compute_cq_notification(aob->aorc, 1);
501 }
502 qeth_notify_skbs(buffer->q, buffer, notification);
503
504 buffer->aob = NULL;
505 qeth_clear_output_buffer(buffer->q, buffer,
506 QETH_QDIO_BUF_HANDLED_DELAYED);
507
508 /* from here on: do not touch buffer anymore */
509 qdio_release_aob(aob);
510 }
511
512 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
513 {
514 return card->options.cq == QETH_CQ_ENABLED &&
515 card->qdio.c_q != NULL &&
516 queue != 0 &&
517 queue == card->qdio.no_in_queues - 1;
518 }
519
520
521 static int qeth_issue_next_read(struct qeth_card *card)
522 {
523 int rc;
524 struct qeth_cmd_buffer *iob;
525
526 QETH_CARD_TEXT(card, 5, "issnxrd");
527 if (card->read.state != CH_STATE_UP)
528 return -EIO;
529 iob = qeth_get_buffer(&card->read);
530 if (!iob) {
531 dev_warn(&card->gdev->dev, "The qeth device driver "
532 "failed to recover an error on the device\n");
533 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
534 "available\n", dev_name(&card->gdev->dev));
535 return -ENOMEM;
536 }
537 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
538 QETH_CARD_TEXT(card, 6, "noirqpnd");
539 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
540 (addr_t) iob, 0, 0);
541 if (rc) {
542 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
543 "rc=%i\n", dev_name(&card->gdev->dev), rc);
544 atomic_set(&card->read.irq_pending, 0);
545 card->read_or_write_problem = 1;
546 qeth_schedule_recovery(card);
547 wake_up(&card->wait_q);
548 }
549 return rc;
550 }
551
552 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
553 {
554 struct qeth_reply *reply;
555
556 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
557 if (reply) {
558 atomic_set(&reply->refcnt, 1);
559 atomic_set(&reply->received, 0);
560 reply->card = card;
561 }
562 return reply;
563 }
564
565 static void qeth_get_reply(struct qeth_reply *reply)
566 {
567 WARN_ON(atomic_read(&reply->refcnt) <= 0);
568 atomic_inc(&reply->refcnt);
569 }
570
571 static void qeth_put_reply(struct qeth_reply *reply)
572 {
573 WARN_ON(atomic_read(&reply->refcnt) <= 0);
574 if (atomic_dec_and_test(&reply->refcnt))
575 kfree(reply);
576 }
577
578 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
579 struct qeth_card *card)
580 {
581 char *ipa_name;
582 int com = cmd->hdr.command;
583 ipa_name = qeth_get_ipa_cmd_name(com);
584 if (rc)
585 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
586 "x%X \"%s\"\n",
587 ipa_name, com, dev_name(&card->gdev->dev),
588 QETH_CARD_IFNAME(card), rc,
589 qeth_get_ipa_msg(rc));
590 else
591 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
592 ipa_name, com, dev_name(&card->gdev->dev),
593 QETH_CARD_IFNAME(card));
594 }
595
596 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
597 struct qeth_cmd_buffer *iob)
598 {
599 struct qeth_ipa_cmd *cmd = NULL;
600
601 QETH_CARD_TEXT(card, 5, "chkipad");
602 if (IS_IPA(iob->data)) {
603 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
604 if (IS_IPA_REPLY(cmd)) {
605 if (cmd->hdr.command != IPA_CMD_SETCCID &&
606 cmd->hdr.command != IPA_CMD_DELCCID &&
607 cmd->hdr.command != IPA_CMD_MODCCID &&
608 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
609 qeth_issue_ipa_msg(cmd,
610 cmd->hdr.return_code, card);
611 return cmd;
612 } else {
613 switch (cmd->hdr.command) {
614 case IPA_CMD_STOPLAN:
615 if (cmd->hdr.return_code ==
616 IPA_RC_VEPA_TO_VEB_TRANSITION) {
617 dev_err(&card->gdev->dev,
618 "Interface %s is down because the "
619 "adjacent port is no longer in "
620 "reflective relay mode\n",
621 QETH_CARD_IFNAME(card));
622 qeth_close_dev(card);
623 } else {
624 dev_warn(&card->gdev->dev,
625 "The link for interface %s on CHPID"
626 " 0x%X failed\n",
627 QETH_CARD_IFNAME(card),
628 card->info.chpid);
629 qeth_issue_ipa_msg(cmd,
630 cmd->hdr.return_code, card);
631 }
632 card->lan_online = 0;
633 if (card->dev && netif_carrier_ok(card->dev))
634 netif_carrier_off(card->dev);
635 return NULL;
636 case IPA_CMD_STARTLAN:
637 dev_info(&card->gdev->dev,
638 "The link for %s on CHPID 0x%X has"
639 " been restored\n",
640 QETH_CARD_IFNAME(card),
641 card->info.chpid);
642 netif_carrier_on(card->dev);
643 card->lan_online = 1;
644 if (card->info.hwtrap)
645 card->info.hwtrap = 2;
646 qeth_schedule_recovery(card);
647 return NULL;
648 case IPA_CMD_SETBRIDGEPORT:
649 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
650 if (card->discipline->control_event_handler
651 (card, cmd))
652 return cmd;
653 else
654 return NULL;
655 case IPA_CMD_MODCCID:
656 return cmd;
657 case IPA_CMD_REGISTER_LOCAL_ADDR:
658 QETH_CARD_TEXT(card, 3, "irla");
659 break;
660 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
661 QETH_CARD_TEXT(card, 3, "urla");
662 break;
663 default:
664 QETH_DBF_MESSAGE(2, "Received data is IPA "
665 "but not a reply!\n");
666 break;
667 }
668 }
669 }
670 return cmd;
671 }
672
673 void qeth_clear_ipacmd_list(struct qeth_card *card)
674 {
675 struct qeth_reply *reply, *r;
676 unsigned long flags;
677
678 QETH_CARD_TEXT(card, 4, "clipalst");
679
680 spin_lock_irqsave(&card->lock, flags);
681 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
682 qeth_get_reply(reply);
683 reply->rc = -EIO;
684 atomic_inc(&reply->received);
685 list_del_init(&reply->list);
686 wake_up(&reply->wait_q);
687 qeth_put_reply(reply);
688 }
689 spin_unlock_irqrestore(&card->lock, flags);
690 atomic_set(&card->write.irq_pending, 0);
691 }
692 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
693
694 static int qeth_check_idx_response(struct qeth_card *card,
695 unsigned char *buffer)
696 {
697 if (!buffer)
698 return 0;
699
700 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
701 if ((buffer[2] & 0xc0) == 0xc0) {
702 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
703 "with cause code 0x%02x%s\n",
704 buffer[4],
705 ((buffer[4] == 0x22) ?
706 " -- try another portname" : ""));
707 QETH_CARD_TEXT(card, 2, "ckidxres");
708 QETH_CARD_TEXT(card, 2, " idxterm");
709 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
710 if (buffer[4] == 0xf6) {
711 dev_err(&card->gdev->dev,
712 "The qeth device is not configured "
713 "for the OSI layer required by z/VM\n");
714 return -EPERM;
715 }
716 return -EIO;
717 }
718 return 0;
719 }
720
721 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
722 {
723 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
724 dev_get_drvdata(&cdev->dev))->dev);
725 return card;
726 }
727
728 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
729 __u32 len)
730 {
731 struct qeth_card *card;
732
733 card = CARD_FROM_CDEV(channel->ccwdev);
734 QETH_CARD_TEXT(card, 4, "setupccw");
735 if (channel == &card->read)
736 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
737 else
738 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
739 channel->ccw.count = len;
740 channel->ccw.cda = (__u32) __pa(iob);
741 }
742
743 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
744 {
745 __u8 index;
746
747 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
748 index = channel->io_buf_no;
749 do {
750 if (channel->iob[index].state == BUF_STATE_FREE) {
751 channel->iob[index].state = BUF_STATE_LOCKED;
752 channel->io_buf_no = (channel->io_buf_no + 1) %
753 QETH_CMD_BUFFER_NO;
754 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
755 return channel->iob + index;
756 }
757 index = (index + 1) % QETH_CMD_BUFFER_NO;
758 } while (index != channel->io_buf_no);
759
760 return NULL;
761 }
762
763 void qeth_release_buffer(struct qeth_channel *channel,
764 struct qeth_cmd_buffer *iob)
765 {
766 unsigned long flags;
767
768 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
769 spin_lock_irqsave(&channel->iob_lock, flags);
770 memset(iob->data, 0, QETH_BUFSIZE);
771 iob->state = BUF_STATE_FREE;
772 iob->callback = qeth_send_control_data_cb;
773 iob->rc = 0;
774 spin_unlock_irqrestore(&channel->iob_lock, flags);
775 wake_up(&channel->wait_q);
776 }
777 EXPORT_SYMBOL_GPL(qeth_release_buffer);
778
779 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
780 {
781 struct qeth_cmd_buffer *buffer = NULL;
782 unsigned long flags;
783
784 spin_lock_irqsave(&channel->iob_lock, flags);
785 buffer = __qeth_get_buffer(channel);
786 spin_unlock_irqrestore(&channel->iob_lock, flags);
787 return buffer;
788 }
789
790 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
791 {
792 struct qeth_cmd_buffer *buffer;
793 wait_event(channel->wait_q,
794 ((buffer = qeth_get_buffer(channel)) != NULL));
795 return buffer;
796 }
797 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
798
799 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
800 {
801 int cnt;
802
803 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
804 qeth_release_buffer(channel, &channel->iob[cnt]);
805 channel->buf_no = 0;
806 channel->io_buf_no = 0;
807 }
808 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
809
810 static void qeth_send_control_data_cb(struct qeth_channel *channel,
811 struct qeth_cmd_buffer *iob)
812 {
813 struct qeth_card *card;
814 struct qeth_reply *reply, *r;
815 struct qeth_ipa_cmd *cmd;
816 unsigned long flags;
817 int keep_reply;
818 int rc = 0;
819
820 card = CARD_FROM_CDEV(channel->ccwdev);
821 QETH_CARD_TEXT(card, 4, "sndctlcb");
822 rc = qeth_check_idx_response(card, iob->data);
823 switch (rc) {
824 case 0:
825 break;
826 case -EIO:
827 qeth_clear_ipacmd_list(card);
828 qeth_schedule_recovery(card);
829 /* fall through */
830 default:
831 goto out;
832 }
833
834 cmd = qeth_check_ipa_data(card, iob);
835 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
836 goto out;
837 /*in case of OSN : check if cmd is set */
838 if (card->info.type == QETH_CARD_TYPE_OSN &&
839 cmd &&
840 cmd->hdr.command != IPA_CMD_STARTLAN &&
841 card->osn_info.assist_cb != NULL) {
842 card->osn_info.assist_cb(card->dev, cmd);
843 goto out;
844 }
845
846 spin_lock_irqsave(&card->lock, flags);
847 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
848 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
849 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
850 qeth_get_reply(reply);
851 list_del_init(&reply->list);
852 spin_unlock_irqrestore(&card->lock, flags);
853 keep_reply = 0;
854 if (reply->callback != NULL) {
855 if (cmd) {
856 reply->offset = (__u16)((char *)cmd -
857 (char *)iob->data);
858 keep_reply = reply->callback(card,
859 reply,
860 (unsigned long)cmd);
861 } else
862 keep_reply = reply->callback(card,
863 reply,
864 (unsigned long)iob);
865 }
866 if (cmd)
867 reply->rc = (u16) cmd->hdr.return_code;
868 else if (iob->rc)
869 reply->rc = iob->rc;
870 if (keep_reply) {
871 spin_lock_irqsave(&card->lock, flags);
872 list_add_tail(&reply->list,
873 &card->cmd_waiter_list);
874 spin_unlock_irqrestore(&card->lock, flags);
875 } else {
876 atomic_inc(&reply->received);
877 wake_up(&reply->wait_q);
878 }
879 qeth_put_reply(reply);
880 goto out;
881 }
882 }
883 spin_unlock_irqrestore(&card->lock, flags);
884 out:
885 memcpy(&card->seqno.pdu_hdr_ack,
886 QETH_PDU_HEADER_SEQ_NO(iob->data),
887 QETH_SEQ_NO_LENGTH);
888 qeth_release_buffer(channel, iob);
889 }
890
891 static int qeth_setup_channel(struct qeth_channel *channel)
892 {
893 int cnt;
894
895 QETH_DBF_TEXT(SETUP, 2, "setupch");
896 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
897 channel->iob[cnt].data =
898 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
899 if (channel->iob[cnt].data == NULL)
900 break;
901 channel->iob[cnt].state = BUF_STATE_FREE;
902 channel->iob[cnt].channel = channel;
903 channel->iob[cnt].callback = qeth_send_control_data_cb;
904 channel->iob[cnt].rc = 0;
905 }
906 if (cnt < QETH_CMD_BUFFER_NO) {
907 while (cnt-- > 0)
908 kfree(channel->iob[cnt].data);
909 return -ENOMEM;
910 }
911 channel->buf_no = 0;
912 channel->io_buf_no = 0;
913 atomic_set(&channel->irq_pending, 0);
914 spin_lock_init(&channel->iob_lock);
915
916 init_waitqueue_head(&channel->wait_q);
917 return 0;
918 }
919
920 static int qeth_set_thread_start_bit(struct qeth_card *card,
921 unsigned long thread)
922 {
923 unsigned long flags;
924
925 spin_lock_irqsave(&card->thread_mask_lock, flags);
926 if (!(card->thread_allowed_mask & thread) ||
927 (card->thread_start_mask & thread)) {
928 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
929 return -EPERM;
930 }
931 card->thread_start_mask |= thread;
932 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
933 return 0;
934 }
935
936 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
937 {
938 unsigned long flags;
939
940 spin_lock_irqsave(&card->thread_mask_lock, flags);
941 card->thread_start_mask &= ~thread;
942 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
943 wake_up(&card->wait_q);
944 }
945 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
946
947 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
948 {
949 unsigned long flags;
950
951 spin_lock_irqsave(&card->thread_mask_lock, flags);
952 card->thread_running_mask &= ~thread;
953 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
954 wake_up(&card->wait_q);
955 }
956 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
957
958 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
959 {
960 unsigned long flags;
961 int rc = 0;
962
963 spin_lock_irqsave(&card->thread_mask_lock, flags);
964 if (card->thread_start_mask & thread) {
965 if ((card->thread_allowed_mask & thread) &&
966 !(card->thread_running_mask & thread)) {
967 rc = 1;
968 card->thread_start_mask &= ~thread;
969 card->thread_running_mask |= thread;
970 } else
971 rc = -EPERM;
972 }
973 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
974 return rc;
975 }
976
977 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
978 {
979 int rc = 0;
980
981 wait_event(card->wait_q,
982 (rc = __qeth_do_run_thread(card, thread)) >= 0);
983 return rc;
984 }
985 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
986
987 void qeth_schedule_recovery(struct qeth_card *card)
988 {
989 QETH_CARD_TEXT(card, 2, "startrec");
990 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
991 schedule_work(&card->kernel_thread_starter);
992 }
993 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
994
995 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
996 {
997 int dstat, cstat;
998 char *sense;
999 struct qeth_card *card;
1000
1001 sense = (char *) irb->ecw;
1002 cstat = irb->scsw.cmd.cstat;
1003 dstat = irb->scsw.cmd.dstat;
1004 card = CARD_FROM_CDEV(cdev);
1005
1006 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1007 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1008 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1009 QETH_CARD_TEXT(card, 2, "CGENCHK");
1010 dev_warn(&cdev->dev, "The qeth device driver "
1011 "failed to recover an error on the device\n");
1012 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1013 dev_name(&cdev->dev), dstat, cstat);
1014 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1015 16, 1, irb, 64, 1);
1016 return 1;
1017 }
1018
1019 if (dstat & DEV_STAT_UNIT_CHECK) {
1020 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1021 SENSE_RESETTING_EVENT_FLAG) {
1022 QETH_CARD_TEXT(card, 2, "REVIND");
1023 return 1;
1024 }
1025 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1026 SENSE_COMMAND_REJECT_FLAG) {
1027 QETH_CARD_TEXT(card, 2, "CMDREJi");
1028 return 1;
1029 }
1030 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1031 QETH_CARD_TEXT(card, 2, "AFFE");
1032 return 1;
1033 }
1034 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1035 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1036 return 0;
1037 }
1038 QETH_CARD_TEXT(card, 2, "DGENCHK");
1039 return 1;
1040 }
1041 return 0;
1042 }
1043
1044 static long __qeth_check_irb_error(struct ccw_device *cdev,
1045 unsigned long intparm, struct irb *irb)
1046 {
1047 struct qeth_card *card;
1048
1049 card = CARD_FROM_CDEV(cdev);
1050
1051 if (!card || !IS_ERR(irb))
1052 return 0;
1053
1054 switch (PTR_ERR(irb)) {
1055 case -EIO:
1056 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1057 dev_name(&cdev->dev));
1058 QETH_CARD_TEXT(card, 2, "ckirberr");
1059 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1060 break;
1061 case -ETIMEDOUT:
1062 dev_warn(&cdev->dev, "A hardware operation timed out"
1063 " on the device\n");
1064 QETH_CARD_TEXT(card, 2, "ckirberr");
1065 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1066 if (intparm == QETH_RCD_PARM) {
1067 if (card->data.ccwdev == cdev) {
1068 card->data.state = CH_STATE_DOWN;
1069 wake_up(&card->wait_q);
1070 }
1071 }
1072 break;
1073 default:
1074 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1075 dev_name(&cdev->dev), PTR_ERR(irb));
1076 QETH_CARD_TEXT(card, 2, "ckirberr");
1077 QETH_CARD_TEXT(card, 2, " rc???");
1078 }
1079 return PTR_ERR(irb);
1080 }
1081
1082 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1083 struct irb *irb)
1084 {
1085 int rc;
1086 int cstat, dstat;
1087 struct qeth_cmd_buffer *buffer;
1088 struct qeth_channel *channel;
1089 struct qeth_card *card;
1090 struct qeth_cmd_buffer *iob;
1091 __u8 index;
1092
1093 if (__qeth_check_irb_error(cdev, intparm, irb))
1094 return;
1095 cstat = irb->scsw.cmd.cstat;
1096 dstat = irb->scsw.cmd.dstat;
1097
1098 card = CARD_FROM_CDEV(cdev);
1099 if (!card)
1100 return;
1101
1102 QETH_CARD_TEXT(card, 5, "irq");
1103
1104 if (card->read.ccwdev == cdev) {
1105 channel = &card->read;
1106 QETH_CARD_TEXT(card, 5, "read");
1107 } else if (card->write.ccwdev == cdev) {
1108 channel = &card->write;
1109 QETH_CARD_TEXT(card, 5, "write");
1110 } else {
1111 channel = &card->data;
1112 QETH_CARD_TEXT(card, 5, "data");
1113 }
1114 atomic_set(&channel->irq_pending, 0);
1115
1116 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1117 channel->state = CH_STATE_STOPPED;
1118
1119 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1120 channel->state = CH_STATE_HALTED;
1121
1122 /*let's wake up immediately on data channel*/
1123 if ((channel == &card->data) && (intparm != 0) &&
1124 (intparm != QETH_RCD_PARM))
1125 goto out;
1126
1127 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1128 QETH_CARD_TEXT(card, 6, "clrchpar");
1129 /* we don't have to handle this further */
1130 intparm = 0;
1131 }
1132 if (intparm == QETH_HALT_CHANNEL_PARM) {
1133 QETH_CARD_TEXT(card, 6, "hltchpar");
1134 /* we don't have to handle this further */
1135 intparm = 0;
1136 }
1137 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1138 (dstat & DEV_STAT_UNIT_CHECK) ||
1139 (cstat)) {
1140 if (irb->esw.esw0.erw.cons) {
1141 dev_warn(&channel->ccwdev->dev,
1142 "The qeth device driver failed to recover "
1143 "an error on the device\n");
1144 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1145 "0x%X dstat 0x%X\n",
1146 dev_name(&channel->ccwdev->dev), cstat, dstat);
1147 print_hex_dump(KERN_WARNING, "qeth: irb ",
1148 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1149 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1150 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1151 }
1152 if (intparm == QETH_RCD_PARM) {
1153 channel->state = CH_STATE_DOWN;
1154 goto out;
1155 }
1156 rc = qeth_get_problem(cdev, irb);
1157 if (rc) {
1158 qeth_clear_ipacmd_list(card);
1159 qeth_schedule_recovery(card);
1160 goto out;
1161 }
1162 }
1163
1164 if (intparm == QETH_RCD_PARM) {
1165 channel->state = CH_STATE_RCD_DONE;
1166 goto out;
1167 }
1168 if (intparm) {
1169 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1170 buffer->state = BUF_STATE_PROCESSED;
1171 }
1172 if (channel == &card->data)
1173 return;
1174 if (channel == &card->read &&
1175 channel->state == CH_STATE_UP)
1176 qeth_issue_next_read(card);
1177
1178 iob = channel->iob;
1179 index = channel->buf_no;
1180 while (iob[index].state == BUF_STATE_PROCESSED) {
1181 if (iob[index].callback != NULL)
1182 iob[index].callback(channel, iob + index);
1183
1184 index = (index + 1) % QETH_CMD_BUFFER_NO;
1185 }
1186 channel->buf_no = index;
1187 out:
1188 wake_up(&card->wait_q);
1189 return;
1190 }
1191
1192 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1193 struct qeth_qdio_out_buffer *buf,
1194 enum iucv_tx_notify notification)
1195 {
1196 struct sk_buff *skb;
1197
1198 if (skb_queue_empty(&buf->skb_list))
1199 goto out;
1200 skb = skb_peek(&buf->skb_list);
1201 while (skb) {
1202 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1203 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1204 if (skb->protocol == ETH_P_AF_IUCV) {
1205 if (skb->sk) {
1206 struct iucv_sock *iucv = iucv_sk(skb->sk);
1207 iucv->sk_txnotify(skb, notification);
1208 }
1209 }
1210 if (skb_queue_is_last(&buf->skb_list, skb))
1211 skb = NULL;
1212 else
1213 skb = skb_queue_next(&buf->skb_list, skb);
1214 }
1215 out:
1216 return;
1217 }
1218
1219 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1220 {
1221 struct sk_buff *skb;
1222 struct iucv_sock *iucv;
1223 int notify_general_error = 0;
1224
1225 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1226 notify_general_error = 1;
1227
1228 /* release may never happen from within CQ tasklet scope */
1229 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1230
1231 skb = skb_dequeue(&buf->skb_list);
1232 while (skb) {
1233 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1234 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1235 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1236 if (skb->sk) {
1237 iucv = iucv_sk(skb->sk);
1238 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1239 }
1240 }
1241 atomic_dec(&skb->users);
1242 dev_kfree_skb_any(skb);
1243 skb = skb_dequeue(&buf->skb_list);
1244 }
1245 }
1246
1247 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1248 struct qeth_qdio_out_buffer *buf,
1249 enum qeth_qdio_buffer_states newbufstate)
1250 {
1251 int i;
1252
1253 /* is PCI flag set on buffer? */
1254 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1255 atomic_dec(&queue->set_pci_flags_count);
1256
1257 if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1258 qeth_release_skbs(buf);
1259 }
1260 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1261 if (buf->buffer->element[i].addr && buf->is_header[i])
1262 kmem_cache_free(qeth_core_header_cache,
1263 buf->buffer->element[i].addr);
1264 buf->is_header[i] = 0;
1265 buf->buffer->element[i].length = 0;
1266 buf->buffer->element[i].addr = NULL;
1267 buf->buffer->element[i].eflags = 0;
1268 buf->buffer->element[i].sflags = 0;
1269 }
1270 buf->buffer->element[15].eflags = 0;
1271 buf->buffer->element[15].sflags = 0;
1272 buf->next_element_to_fill = 0;
1273 atomic_set(&buf->state, newbufstate);
1274 }
1275
1276 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1277 {
1278 int j;
1279
1280 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1281 if (!q->bufs[j])
1282 continue;
1283 qeth_cleanup_handled_pending(q, j, 1);
1284 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1285 if (free) {
1286 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1287 q->bufs[j] = NULL;
1288 }
1289 }
1290 }
1291
1292 void qeth_clear_qdio_buffers(struct qeth_card *card)
1293 {
1294 int i;
1295
1296 QETH_CARD_TEXT(card, 2, "clearqdbf");
1297 /* clear outbound buffers to free skbs */
1298 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1299 if (card->qdio.out_qs[i]) {
1300 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1301 }
1302 }
1303 }
1304 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1305
1306 static void qeth_free_buffer_pool(struct qeth_card *card)
1307 {
1308 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1309 int i = 0;
1310 list_for_each_entry_safe(pool_entry, tmp,
1311 &card->qdio.init_pool.entry_list, init_list){
1312 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1313 free_page((unsigned long)pool_entry->elements[i]);
1314 list_del(&pool_entry->init_list);
1315 kfree(pool_entry);
1316 }
1317 }
1318
1319 static void qeth_clean_channel(struct qeth_channel *channel)
1320 {
1321 int cnt;
1322
1323 QETH_DBF_TEXT(SETUP, 2, "freech");
1324 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1325 kfree(channel->iob[cnt].data);
1326 }
1327
1328 static void qeth_set_single_write_queues(struct qeth_card *card)
1329 {
1330 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1331 (card->qdio.no_out_queues == 4))
1332 qeth_free_qdio_buffers(card);
1333
1334 card->qdio.no_out_queues = 1;
1335 if (card->qdio.default_out_queue != 0)
1336 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1337
1338 card->qdio.default_out_queue = 0;
1339 }
1340
1341 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1342 {
1343 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1344 (card->qdio.no_out_queues == 1)) {
1345 qeth_free_qdio_buffers(card);
1346 card->qdio.default_out_queue = 2;
1347 }
1348 card->qdio.no_out_queues = 4;
1349 }
1350
1351 static void qeth_update_from_chp_desc(struct qeth_card *card)
1352 {
1353 struct ccw_device *ccwdev;
1354 struct channel_path_desc *chp_dsc;
1355
1356 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1357
1358 ccwdev = card->data.ccwdev;
1359 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1360 if (!chp_dsc)
1361 goto out;
1362
1363 card->info.func_level = 0x4100 + chp_dsc->desc;
1364 if (card->info.type == QETH_CARD_TYPE_IQD)
1365 goto out;
1366
1367 /* CHPP field bit 6 == 1 -> single queue */
1368 if ((chp_dsc->chpp & 0x02) == 0x02)
1369 qeth_set_single_write_queues(card);
1370 else
1371 qeth_set_multiple_write_queues(card);
1372 out:
1373 kfree(chp_dsc);
1374 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1375 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1376 }
1377
1378 static void qeth_init_qdio_info(struct qeth_card *card)
1379 {
1380 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1381 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1382 /* inbound */
1383 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1384 if (card->info.type == QETH_CARD_TYPE_IQD)
1385 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1386 else
1387 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1388 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1389 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1390 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1391 }
1392
1393 static void qeth_set_intial_options(struct qeth_card *card)
1394 {
1395 card->options.route4.type = NO_ROUTER;
1396 card->options.route6.type = NO_ROUTER;
1397 card->options.fake_broadcast = 0;
1398 card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1399 card->options.performance_stats = 0;
1400 card->options.rx_sg_cb = QETH_RX_SG_CB;
1401 card->options.isolation = ISOLATION_MODE_NONE;
1402 card->options.cq = QETH_CQ_DISABLED;
1403 }
1404
1405 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1406 {
1407 unsigned long flags;
1408 int rc = 0;
1409
1410 spin_lock_irqsave(&card->thread_mask_lock, flags);
1411 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1412 (u8) card->thread_start_mask,
1413 (u8) card->thread_allowed_mask,
1414 (u8) card->thread_running_mask);
1415 rc = (card->thread_start_mask & thread);
1416 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1417 return rc;
1418 }
1419
1420 static void qeth_start_kernel_thread(struct work_struct *work)
1421 {
1422 struct task_struct *ts;
1423 struct qeth_card *card = container_of(work, struct qeth_card,
1424 kernel_thread_starter);
1425 QETH_CARD_TEXT(card , 2, "strthrd");
1426
1427 if (card->read.state != CH_STATE_UP &&
1428 card->write.state != CH_STATE_UP)
1429 return;
1430 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1431 ts = kthread_run(card->discipline->recover, (void *)card,
1432 "qeth_recover");
1433 if (IS_ERR(ts)) {
1434 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1435 qeth_clear_thread_running_bit(card,
1436 QETH_RECOVER_THREAD);
1437 }
1438 }
1439 }
1440
1441 static void qeth_buffer_reclaim_work(struct work_struct *);
1442 static int qeth_setup_card(struct qeth_card *card)
1443 {
1444
1445 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1446 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1447
1448 card->read.state = CH_STATE_DOWN;
1449 card->write.state = CH_STATE_DOWN;
1450 card->data.state = CH_STATE_DOWN;
1451 card->state = CARD_STATE_DOWN;
1452 card->lan_online = 0;
1453 card->read_or_write_problem = 0;
1454 card->dev = NULL;
1455 spin_lock_init(&card->vlanlock);
1456 spin_lock_init(&card->mclock);
1457 spin_lock_init(&card->lock);
1458 spin_lock_init(&card->ip_lock);
1459 spin_lock_init(&card->thread_mask_lock);
1460 mutex_init(&card->conf_mutex);
1461 mutex_init(&card->discipline_mutex);
1462 card->thread_start_mask = 0;
1463 card->thread_allowed_mask = 0;
1464 card->thread_running_mask = 0;
1465 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1466 INIT_LIST_HEAD(&card->ip_list);
1467 INIT_LIST_HEAD(card->ip_tbd_list);
1468 INIT_LIST_HEAD(&card->cmd_waiter_list);
1469 init_waitqueue_head(&card->wait_q);
1470 /* initial options */
1471 qeth_set_intial_options(card);
1472 /* IP address takeover */
1473 INIT_LIST_HEAD(&card->ipato.entries);
1474 card->ipato.enabled = 0;
1475 card->ipato.invert4 = 0;
1476 card->ipato.invert6 = 0;
1477 /* init QDIO stuff */
1478 qeth_init_qdio_info(card);
1479 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1480 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1481 return 0;
1482 }
1483
1484 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1485 {
1486 struct qeth_card *card = container_of(slr, struct qeth_card,
1487 qeth_service_level);
1488 if (card->info.mcl_level[0])
1489 seq_printf(m, "qeth: %s firmware level %s\n",
1490 CARD_BUS_ID(card), card->info.mcl_level);
1491 }
1492
1493 static struct qeth_card *qeth_alloc_card(void)
1494 {
1495 struct qeth_card *card;
1496
1497 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1498 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1499 if (!card)
1500 goto out;
1501 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1502 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1503 if (!card->ip_tbd_list) {
1504 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1505 goto out_card;
1506 }
1507 if (qeth_setup_channel(&card->read))
1508 goto out_ip;
1509 if (qeth_setup_channel(&card->write))
1510 goto out_channel;
1511 card->options.layer2 = -1;
1512 card->qeth_service_level.seq_print = qeth_core_sl_print;
1513 register_service_level(&card->qeth_service_level);
1514 return card;
1515
1516 out_channel:
1517 qeth_clean_channel(&card->read);
1518 out_ip:
1519 kfree(card->ip_tbd_list);
1520 out_card:
1521 kfree(card);
1522 out:
1523 return NULL;
1524 }
1525
1526 static int qeth_determine_card_type(struct qeth_card *card)
1527 {
1528 int i = 0;
1529
1530 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1531
1532 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1533 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1534 while (known_devices[i][QETH_DEV_MODEL_IND]) {
1535 if ((CARD_RDEV(card)->id.dev_type ==
1536 known_devices[i][QETH_DEV_TYPE_IND]) &&
1537 (CARD_RDEV(card)->id.dev_model ==
1538 known_devices[i][QETH_DEV_MODEL_IND])) {
1539 card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1540 card->qdio.no_out_queues =
1541 known_devices[i][QETH_QUEUE_NO_IND];
1542 card->qdio.no_in_queues = 1;
1543 card->info.is_multicast_different =
1544 known_devices[i][QETH_MULTICAST_IND];
1545 qeth_update_from_chp_desc(card);
1546 return 0;
1547 }
1548 i++;
1549 }
1550 card->info.type = QETH_CARD_TYPE_UNKNOWN;
1551 dev_err(&card->gdev->dev, "The adapter hardware is of an "
1552 "unknown type\n");
1553 return -ENOENT;
1554 }
1555
1556 static int qeth_clear_channel(struct qeth_channel *channel)
1557 {
1558 unsigned long flags;
1559 struct qeth_card *card;
1560 int rc;
1561
1562 card = CARD_FROM_CDEV(channel->ccwdev);
1563 QETH_CARD_TEXT(card, 3, "clearch");
1564 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1565 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1566 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1567
1568 if (rc)
1569 return rc;
1570 rc = wait_event_interruptible_timeout(card->wait_q,
1571 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1572 if (rc == -ERESTARTSYS)
1573 return rc;
1574 if (channel->state != CH_STATE_STOPPED)
1575 return -ETIME;
1576 channel->state = CH_STATE_DOWN;
1577 return 0;
1578 }
1579
1580 static int qeth_halt_channel(struct qeth_channel *channel)
1581 {
1582 unsigned long flags;
1583 struct qeth_card *card;
1584 int rc;
1585
1586 card = CARD_FROM_CDEV(channel->ccwdev);
1587 QETH_CARD_TEXT(card, 3, "haltch");
1588 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1589 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1590 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1591
1592 if (rc)
1593 return rc;
1594 rc = wait_event_interruptible_timeout(card->wait_q,
1595 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1596 if (rc == -ERESTARTSYS)
1597 return rc;
1598 if (channel->state != CH_STATE_HALTED)
1599 return -ETIME;
1600 return 0;
1601 }
1602
1603 static int qeth_halt_channels(struct qeth_card *card)
1604 {
1605 int rc1 = 0, rc2 = 0, rc3 = 0;
1606
1607 QETH_CARD_TEXT(card, 3, "haltchs");
1608 rc1 = qeth_halt_channel(&card->read);
1609 rc2 = qeth_halt_channel(&card->write);
1610 rc3 = qeth_halt_channel(&card->data);
1611 if (rc1)
1612 return rc1;
1613 if (rc2)
1614 return rc2;
1615 return rc3;
1616 }
1617
1618 static int qeth_clear_channels(struct qeth_card *card)
1619 {
1620 int rc1 = 0, rc2 = 0, rc3 = 0;
1621
1622 QETH_CARD_TEXT(card, 3, "clearchs");
1623 rc1 = qeth_clear_channel(&card->read);
1624 rc2 = qeth_clear_channel(&card->write);
1625 rc3 = qeth_clear_channel(&card->data);
1626 if (rc1)
1627 return rc1;
1628 if (rc2)
1629 return rc2;
1630 return rc3;
1631 }
1632
1633 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1634 {
1635 int rc = 0;
1636
1637 QETH_CARD_TEXT(card, 3, "clhacrd");
1638
1639 if (halt)
1640 rc = qeth_halt_channels(card);
1641 if (rc)
1642 return rc;
1643 return qeth_clear_channels(card);
1644 }
1645
1646 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1647 {
1648 int rc = 0;
1649
1650 QETH_CARD_TEXT(card, 3, "qdioclr");
1651 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1652 QETH_QDIO_CLEANING)) {
1653 case QETH_QDIO_ESTABLISHED:
1654 if (card->info.type == QETH_CARD_TYPE_IQD)
1655 rc = qdio_shutdown(CARD_DDEV(card),
1656 QDIO_FLAG_CLEANUP_USING_HALT);
1657 else
1658 rc = qdio_shutdown(CARD_DDEV(card),
1659 QDIO_FLAG_CLEANUP_USING_CLEAR);
1660 if (rc)
1661 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1662 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1663 break;
1664 case QETH_QDIO_CLEANING:
1665 return rc;
1666 default:
1667 break;
1668 }
1669 rc = qeth_clear_halt_card(card, use_halt);
1670 if (rc)
1671 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1672 card->state = CARD_STATE_DOWN;
1673 return rc;
1674 }
1675 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1676
1677 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1678 int *length)
1679 {
1680 struct ciw *ciw;
1681 char *rcd_buf;
1682 int ret;
1683 struct qeth_channel *channel = &card->data;
1684 unsigned long flags;
1685
1686 /*
1687 * scan for RCD command in extended SenseID data
1688 */
1689 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1690 if (!ciw || ciw->cmd == 0)
1691 return -EOPNOTSUPP;
1692 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1693 if (!rcd_buf)
1694 return -ENOMEM;
1695
1696 channel->ccw.cmd_code = ciw->cmd;
1697 channel->ccw.cda = (__u32) __pa(rcd_buf);
1698 channel->ccw.count = ciw->count;
1699 channel->ccw.flags = CCW_FLAG_SLI;
1700 channel->state = CH_STATE_RCD;
1701 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1702 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1703 QETH_RCD_PARM, LPM_ANYPATH, 0,
1704 QETH_RCD_TIMEOUT);
1705 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1706 if (!ret)
1707 wait_event(card->wait_q,
1708 (channel->state == CH_STATE_RCD_DONE ||
1709 channel->state == CH_STATE_DOWN));
1710 if (channel->state == CH_STATE_DOWN)
1711 ret = -EIO;
1712 else
1713 channel->state = CH_STATE_DOWN;
1714 if (ret) {
1715 kfree(rcd_buf);
1716 *buffer = NULL;
1717 *length = 0;
1718 } else {
1719 *length = ciw->count;
1720 *buffer = rcd_buf;
1721 }
1722 return ret;
1723 }
1724
1725 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1726 {
1727 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1728 card->info.chpid = prcd[30];
1729 card->info.unit_addr2 = prcd[31];
1730 card->info.cula = prcd[63];
1731 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1732 (prcd[0x11] == _ascebc['M']));
1733 }
1734
1735 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1736 {
1737 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1738
1739 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1740 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1741 card->info.blkt.time_total = 0;
1742 card->info.blkt.inter_packet = 0;
1743 card->info.blkt.inter_packet_jumbo = 0;
1744 } else {
1745 card->info.blkt.time_total = 250;
1746 card->info.blkt.inter_packet = 5;
1747 card->info.blkt.inter_packet_jumbo = 15;
1748 }
1749 }
1750
1751 static void qeth_init_tokens(struct qeth_card *card)
1752 {
1753 card->token.issuer_rm_w = 0x00010103UL;
1754 card->token.cm_filter_w = 0x00010108UL;
1755 card->token.cm_connection_w = 0x0001010aUL;
1756 card->token.ulp_filter_w = 0x0001010bUL;
1757 card->token.ulp_connection_w = 0x0001010dUL;
1758 }
1759
1760 static void qeth_init_func_level(struct qeth_card *card)
1761 {
1762 switch (card->info.type) {
1763 case QETH_CARD_TYPE_IQD:
1764 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1765 break;
1766 case QETH_CARD_TYPE_OSD:
1767 case QETH_CARD_TYPE_OSN:
1768 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1769 break;
1770 default:
1771 break;
1772 }
1773 }
1774
1775 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1776 void (*idx_reply_cb)(struct qeth_channel *,
1777 struct qeth_cmd_buffer *))
1778 {
1779 struct qeth_cmd_buffer *iob;
1780 unsigned long flags;
1781 int rc;
1782 struct qeth_card *card;
1783
1784 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1785 card = CARD_FROM_CDEV(channel->ccwdev);
1786 iob = qeth_get_buffer(channel);
1787 if (!iob)
1788 return -ENOMEM;
1789 iob->callback = idx_reply_cb;
1790 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1791 channel->ccw.count = QETH_BUFSIZE;
1792 channel->ccw.cda = (__u32) __pa(iob->data);
1793
1794 wait_event(card->wait_q,
1795 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1796 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1797 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1798 rc = ccw_device_start(channel->ccwdev,
1799 &channel->ccw, (addr_t) iob, 0, 0);
1800 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1801
1802 if (rc) {
1803 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1804 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1805 atomic_set(&channel->irq_pending, 0);
1806 wake_up(&card->wait_q);
1807 return rc;
1808 }
1809 rc = wait_event_interruptible_timeout(card->wait_q,
1810 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1811 if (rc == -ERESTARTSYS)
1812 return rc;
1813 if (channel->state != CH_STATE_UP) {
1814 rc = -ETIME;
1815 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1816 qeth_clear_cmd_buffers(channel);
1817 } else
1818 rc = 0;
1819 return rc;
1820 }
1821
1822 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1823 void (*idx_reply_cb)(struct qeth_channel *,
1824 struct qeth_cmd_buffer *))
1825 {
1826 struct qeth_card *card;
1827 struct qeth_cmd_buffer *iob;
1828 unsigned long flags;
1829 __u16 temp;
1830 __u8 tmp;
1831 int rc;
1832 struct ccw_dev_id temp_devid;
1833
1834 card = CARD_FROM_CDEV(channel->ccwdev);
1835
1836 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1837
1838 iob = qeth_get_buffer(channel);
1839 if (!iob)
1840 return -ENOMEM;
1841 iob->callback = idx_reply_cb;
1842 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1843 channel->ccw.count = IDX_ACTIVATE_SIZE;
1844 channel->ccw.cda = (__u32) __pa(iob->data);
1845 if (channel == &card->write) {
1846 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1847 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1848 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1849 card->seqno.trans_hdr++;
1850 } else {
1851 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1852 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1853 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1854 }
1855 tmp = ((__u8)card->info.portno) | 0x80;
1856 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1857 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1858 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1859 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1860 &card->info.func_level, sizeof(__u16));
1861 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1862 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1863 temp = (card->info.cula << 8) + card->info.unit_addr2;
1864 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1865
1866 wait_event(card->wait_q,
1867 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1868 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1869 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1870 rc = ccw_device_start(channel->ccwdev,
1871 &channel->ccw, (addr_t) iob, 0, 0);
1872 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1873
1874 if (rc) {
1875 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1876 rc);
1877 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1878 atomic_set(&channel->irq_pending, 0);
1879 wake_up(&card->wait_q);
1880 return rc;
1881 }
1882 rc = wait_event_interruptible_timeout(card->wait_q,
1883 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1884 if (rc == -ERESTARTSYS)
1885 return rc;
1886 if (channel->state != CH_STATE_ACTIVATING) {
1887 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1888 " failed to recover an error on the device\n");
1889 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1890 dev_name(&channel->ccwdev->dev));
1891 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1892 qeth_clear_cmd_buffers(channel);
1893 return -ETIME;
1894 }
1895 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1896 }
1897
1898 static int qeth_peer_func_level(int level)
1899 {
1900 if ((level & 0xff) == 8)
1901 return (level & 0xff) + 0x400;
1902 if (((level >> 8) & 3) == 1)
1903 return (level & 0xff) + 0x200;
1904 return level;
1905 }
1906
1907 static void qeth_idx_write_cb(struct qeth_channel *channel,
1908 struct qeth_cmd_buffer *iob)
1909 {
1910 struct qeth_card *card;
1911 __u16 temp;
1912
1913 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1914
1915 if (channel->state == CH_STATE_DOWN) {
1916 channel->state = CH_STATE_ACTIVATING;
1917 goto out;
1918 }
1919 card = CARD_FROM_CDEV(channel->ccwdev);
1920
1921 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1922 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1923 dev_err(&card->write.ccwdev->dev,
1924 "The adapter is used exclusively by another "
1925 "host\n");
1926 else
1927 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1928 " negative reply\n",
1929 dev_name(&card->write.ccwdev->dev));
1930 goto out;
1931 }
1932 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1933 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1934 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1935 "function level mismatch (sent: 0x%x, received: "
1936 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1937 card->info.func_level, temp);
1938 goto out;
1939 }
1940 channel->state = CH_STATE_UP;
1941 out:
1942 qeth_release_buffer(channel, iob);
1943 }
1944
1945 static void qeth_idx_read_cb(struct qeth_channel *channel,
1946 struct qeth_cmd_buffer *iob)
1947 {
1948 struct qeth_card *card;
1949 __u16 temp;
1950
1951 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1952 if (channel->state == CH_STATE_DOWN) {
1953 channel->state = CH_STATE_ACTIVATING;
1954 goto out;
1955 }
1956
1957 card = CARD_FROM_CDEV(channel->ccwdev);
1958 if (qeth_check_idx_response(card, iob->data))
1959 goto out;
1960
1961 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1962 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1963 case QETH_IDX_ACT_ERR_EXCL:
1964 dev_err(&card->write.ccwdev->dev,
1965 "The adapter is used exclusively by another "
1966 "host\n");
1967 break;
1968 case QETH_IDX_ACT_ERR_AUTH:
1969 case QETH_IDX_ACT_ERR_AUTH_USER:
1970 dev_err(&card->read.ccwdev->dev,
1971 "Setting the device online failed because of "
1972 "insufficient authorization\n");
1973 break;
1974 default:
1975 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1976 " negative reply\n",
1977 dev_name(&card->read.ccwdev->dev));
1978 }
1979 QETH_CARD_TEXT_(card, 2, "idxread%c",
1980 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1981 goto out;
1982 }
1983
1984 /**
1985 * * temporary fix for microcode bug
1986 * * to revert it,replace OR by AND
1987 * */
1988 if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1989 (card->info.type == QETH_CARD_TYPE_OSD))
1990 card->info.portname_required = 1;
1991
1992 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1993 if (temp != qeth_peer_func_level(card->info.func_level)) {
1994 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1995 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1996 dev_name(&card->read.ccwdev->dev),
1997 card->info.func_level, temp);
1998 goto out;
1999 }
2000 memcpy(&card->token.issuer_rm_r,
2001 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2002 QETH_MPC_TOKEN_LENGTH);
2003 memcpy(&card->info.mcl_level[0],
2004 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2005 channel->state = CH_STATE_UP;
2006 out:
2007 qeth_release_buffer(channel, iob);
2008 }
2009
2010 void qeth_prepare_control_data(struct qeth_card *card, int len,
2011 struct qeth_cmd_buffer *iob)
2012 {
2013 qeth_setup_ccw(&card->write, iob->data, len);
2014 iob->callback = qeth_release_buffer;
2015
2016 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2017 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2018 card->seqno.trans_hdr++;
2019 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2020 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2021 card->seqno.pdu_hdr++;
2022 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2023 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2024 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2025 }
2026 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2027
2028 /**
2029 * qeth_send_control_data() - send control command to the card
2030 * @card: qeth_card structure pointer
2031 * @len: size of the command buffer
2032 * @iob: qeth_cmd_buffer pointer
2033 * @reply_cb: callback function pointer
2034 * @cb_card: pointer to the qeth_card structure
2035 * @cb_reply: pointer to the qeth_reply structure
2036 * @cb_cmd: pointer to the original iob for non-IPA
2037 * commands, or to the qeth_ipa_cmd structure
2038 * for the IPA commands.
2039 * @reply_param: private pointer passed to the callback
2040 *
2041 * Returns the value of the `return_code' field of the response
2042 * block returned from the hardware, or other error indication.
2043 * Value of zero indicates successful execution of the command.
2044 *
2045 * Callback function gets called one or more times, with cb_cmd
2046 * pointing to the response returned by the hardware. Callback
2047 * function must return non-zero if more reply blocks are expected,
2048 * and zero if the last or only reply block is received. Callback
2049 * function can get the value of the reply_param pointer from the
2050 * field 'param' of the structure qeth_reply.
2051 */
2052
2053 int qeth_send_control_data(struct qeth_card *card, int len,
2054 struct qeth_cmd_buffer *iob,
2055 int (*reply_cb)(struct qeth_card *cb_card,
2056 struct qeth_reply *cb_reply,
2057 unsigned long cb_cmd),
2058 void *reply_param)
2059 {
2060 int rc;
2061 unsigned long flags;
2062 struct qeth_reply *reply = NULL;
2063 unsigned long timeout, event_timeout;
2064 struct qeth_ipa_cmd *cmd;
2065
2066 QETH_CARD_TEXT(card, 2, "sendctl");
2067
2068 if (card->read_or_write_problem) {
2069 qeth_release_buffer(iob->channel, iob);
2070 return -EIO;
2071 }
2072 reply = qeth_alloc_reply(card);
2073 if (!reply) {
2074 return -ENOMEM;
2075 }
2076 reply->callback = reply_cb;
2077 reply->param = reply_param;
2078 if (card->state == CARD_STATE_DOWN)
2079 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2080 else
2081 reply->seqno = card->seqno.ipa++;
2082 init_waitqueue_head(&reply->wait_q);
2083 spin_lock_irqsave(&card->lock, flags);
2084 list_add_tail(&reply->list, &card->cmd_waiter_list);
2085 spin_unlock_irqrestore(&card->lock, flags);
2086 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2087
2088 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2089 qeth_prepare_control_data(card, len, iob);
2090
2091 if (IS_IPA(iob->data))
2092 event_timeout = QETH_IPA_TIMEOUT;
2093 else
2094 event_timeout = QETH_TIMEOUT;
2095 timeout = jiffies + event_timeout;
2096
2097 QETH_CARD_TEXT(card, 6, "noirqpnd");
2098 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2099 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2100 (addr_t) iob, 0, 0);
2101 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2102 if (rc) {
2103 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2104 "ccw_device_start rc = %i\n",
2105 dev_name(&card->write.ccwdev->dev), rc);
2106 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2107 spin_lock_irqsave(&card->lock, flags);
2108 list_del_init(&reply->list);
2109 qeth_put_reply(reply);
2110 spin_unlock_irqrestore(&card->lock, flags);
2111 qeth_release_buffer(iob->channel, iob);
2112 atomic_set(&card->write.irq_pending, 0);
2113 wake_up(&card->wait_q);
2114 return rc;
2115 }
2116
2117 /* we have only one long running ipassist, since we can ensure
2118 process context of this command we can sleep */
2119 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2120 if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2121 (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2122 if (!wait_event_timeout(reply->wait_q,
2123 atomic_read(&reply->received), event_timeout))
2124 goto time_err;
2125 } else {
2126 while (!atomic_read(&reply->received)) {
2127 if (time_after(jiffies, timeout))
2128 goto time_err;
2129 cpu_relax();
2130 }
2131 }
2132
2133 if (reply->rc == -EIO)
2134 goto error;
2135 rc = reply->rc;
2136 qeth_put_reply(reply);
2137 return rc;
2138
2139 time_err:
2140 reply->rc = -ETIME;
2141 spin_lock_irqsave(&reply->card->lock, flags);
2142 list_del_init(&reply->list);
2143 spin_unlock_irqrestore(&reply->card->lock, flags);
2144 atomic_inc(&reply->received);
2145 error:
2146 atomic_set(&card->write.irq_pending, 0);
2147 qeth_release_buffer(iob->channel, iob);
2148 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2149 rc = reply->rc;
2150 qeth_put_reply(reply);
2151 return rc;
2152 }
2153 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2154
2155 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2156 unsigned long data)
2157 {
2158 struct qeth_cmd_buffer *iob;
2159
2160 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2161
2162 iob = (struct qeth_cmd_buffer *) data;
2163 memcpy(&card->token.cm_filter_r,
2164 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2165 QETH_MPC_TOKEN_LENGTH);
2166 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2167 return 0;
2168 }
2169
2170 static int qeth_cm_enable(struct qeth_card *card)
2171 {
2172 int rc;
2173 struct qeth_cmd_buffer *iob;
2174
2175 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2176
2177 iob = qeth_wait_for_buffer(&card->write);
2178 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2179 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2180 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2181 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2182 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2183
2184 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2185 qeth_cm_enable_cb, NULL);
2186 return rc;
2187 }
2188
2189 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2190 unsigned long data)
2191 {
2192
2193 struct qeth_cmd_buffer *iob;
2194
2195 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2196
2197 iob = (struct qeth_cmd_buffer *) data;
2198 memcpy(&card->token.cm_connection_r,
2199 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2200 QETH_MPC_TOKEN_LENGTH);
2201 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2202 return 0;
2203 }
2204
2205 static int qeth_cm_setup(struct qeth_card *card)
2206 {
2207 int rc;
2208 struct qeth_cmd_buffer *iob;
2209
2210 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2211
2212 iob = qeth_wait_for_buffer(&card->write);
2213 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2214 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2215 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2216 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2217 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2218 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2219 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2220 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2221 qeth_cm_setup_cb, NULL);
2222 return rc;
2223
2224 }
2225
2226 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2227 {
2228 switch (card->info.type) {
2229 case QETH_CARD_TYPE_UNKNOWN:
2230 return 1500;
2231 case QETH_CARD_TYPE_IQD:
2232 return card->info.max_mtu;
2233 case QETH_CARD_TYPE_OSD:
2234 switch (card->info.link_type) {
2235 case QETH_LINK_TYPE_HSTR:
2236 case QETH_LINK_TYPE_LANE_TR:
2237 return 2000;
2238 default:
2239 return card->options.layer2 ? 1500 : 1492;
2240 }
2241 case QETH_CARD_TYPE_OSM:
2242 case QETH_CARD_TYPE_OSX:
2243 return card->options.layer2 ? 1500 : 1492;
2244 default:
2245 return 1500;
2246 }
2247 }
2248
2249 static inline int qeth_get_mtu_outof_framesize(int framesize)
2250 {
2251 switch (framesize) {
2252 case 0x4000:
2253 return 8192;
2254 case 0x6000:
2255 return 16384;
2256 case 0xa000:
2257 return 32768;
2258 case 0xffff:
2259 return 57344;
2260 default:
2261 return 0;
2262 }
2263 }
2264
2265 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2266 {
2267 switch (card->info.type) {
2268 case QETH_CARD_TYPE_OSD:
2269 case QETH_CARD_TYPE_OSM:
2270 case QETH_CARD_TYPE_OSX:
2271 case QETH_CARD_TYPE_IQD:
2272 return ((mtu >= 576) &&
2273 (mtu <= card->info.max_mtu));
2274 case QETH_CARD_TYPE_OSN:
2275 case QETH_CARD_TYPE_UNKNOWN:
2276 default:
2277 return 1;
2278 }
2279 }
2280
2281 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2282 unsigned long data)
2283 {
2284
2285 __u16 mtu, framesize;
2286 __u16 len;
2287 __u8 link_type;
2288 struct qeth_cmd_buffer *iob;
2289
2290 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2291
2292 iob = (struct qeth_cmd_buffer *) data;
2293 memcpy(&card->token.ulp_filter_r,
2294 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2295 QETH_MPC_TOKEN_LENGTH);
2296 if (card->info.type == QETH_CARD_TYPE_IQD) {
2297 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2298 mtu = qeth_get_mtu_outof_framesize(framesize);
2299 if (!mtu) {
2300 iob->rc = -EINVAL;
2301 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2302 return 0;
2303 }
2304 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2305 /* frame size has changed */
2306 if (card->dev &&
2307 ((card->dev->mtu == card->info.initial_mtu) ||
2308 (card->dev->mtu > mtu)))
2309 card->dev->mtu = mtu;
2310 qeth_free_qdio_buffers(card);
2311 }
2312 card->info.initial_mtu = mtu;
2313 card->info.max_mtu = mtu;
2314 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2315 } else {
2316 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2317 iob->data);
2318 card->info.initial_mtu = min(card->info.max_mtu,
2319 qeth_get_initial_mtu_for_card(card));
2320 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2321 }
2322
2323 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2324 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2325 memcpy(&link_type,
2326 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2327 card->info.link_type = link_type;
2328 } else
2329 card->info.link_type = 0;
2330 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2331 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2332 return 0;
2333 }
2334
2335 static int qeth_ulp_enable(struct qeth_card *card)
2336 {
2337 int rc;
2338 char prot_type;
2339 struct qeth_cmd_buffer *iob;
2340
2341 /*FIXME: trace view callbacks*/
2342 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2343
2344 iob = qeth_wait_for_buffer(&card->write);
2345 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2346
2347 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2348 (__u8) card->info.portno;
2349 if (card->options.layer2)
2350 if (card->info.type == QETH_CARD_TYPE_OSN)
2351 prot_type = QETH_PROT_OSN2;
2352 else
2353 prot_type = QETH_PROT_LAYER2;
2354 else
2355 prot_type = QETH_PROT_TCPIP;
2356
2357 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2358 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2359 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2360 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2361 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2362 memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2363 card->info.portname, 9);
2364 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2365 qeth_ulp_enable_cb, NULL);
2366 return rc;
2367
2368 }
2369
2370 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2371 unsigned long data)
2372 {
2373 struct qeth_cmd_buffer *iob;
2374
2375 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2376
2377 iob = (struct qeth_cmd_buffer *) data;
2378 memcpy(&card->token.ulp_connection_r,
2379 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2380 QETH_MPC_TOKEN_LENGTH);
2381 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2382 3)) {
2383 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2384 dev_err(&card->gdev->dev, "A connection could not be "
2385 "established because of an OLM limit\n");
2386 iob->rc = -EMLINK;
2387 }
2388 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2389 return 0;
2390 }
2391
2392 static int qeth_ulp_setup(struct qeth_card *card)
2393 {
2394 int rc;
2395 __u16 temp;
2396 struct qeth_cmd_buffer *iob;
2397 struct ccw_dev_id dev_id;
2398
2399 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2400
2401 iob = qeth_wait_for_buffer(&card->write);
2402 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2403
2404 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2405 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2406 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2407 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2408 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2409 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2410
2411 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2412 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2413 temp = (card->info.cula << 8) + card->info.unit_addr2;
2414 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2415 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2416 qeth_ulp_setup_cb, NULL);
2417 return rc;
2418 }
2419
2420 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2421 {
2422 int rc;
2423 struct qeth_qdio_out_buffer *newbuf;
2424
2425 rc = 0;
2426 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2427 if (!newbuf) {
2428 rc = -ENOMEM;
2429 goto out;
2430 }
2431 newbuf->buffer = q->qdio_bufs[bidx];
2432 skb_queue_head_init(&newbuf->skb_list);
2433 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2434 newbuf->q = q;
2435 newbuf->aob = NULL;
2436 newbuf->next_pending = q->bufs[bidx];
2437 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2438 q->bufs[bidx] = newbuf;
2439 if (q->bufstates) {
2440 q->bufstates[bidx].user = newbuf;
2441 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2442 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2443 QETH_CARD_TEXT_(q->card, 2, "%lx",
2444 (long) newbuf->next_pending);
2445 }
2446 out:
2447 return rc;
2448 }
2449
2450 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2451 {
2452 if (!q)
2453 return;
2454
2455 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2456 kfree(q);
2457 }
2458
2459 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2460 {
2461 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2462
2463 if (!q)
2464 return NULL;
2465
2466 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2467 kfree(q);
2468 return NULL;
2469 }
2470 return q;
2471 }
2472
2473 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2474 {
2475 int i, j;
2476
2477 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2478
2479 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2480 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2481 return 0;
2482
2483 QETH_DBF_TEXT(SETUP, 2, "inq");
2484 card->qdio.in_q = qeth_alloc_qdio_queue();
2485 if (!card->qdio.in_q)
2486 goto out_nomem;
2487
2488 /* inbound buffer pool */
2489 if (qeth_alloc_buffer_pool(card))
2490 goto out_freeinq;
2491
2492 /* outbound */
2493 card->qdio.out_qs =
2494 kzalloc(card->qdio.no_out_queues *
2495 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2496 if (!card->qdio.out_qs)
2497 goto out_freepool;
2498 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2499 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2500 if (!card->qdio.out_qs[i])
2501 goto out_freeoutq;
2502 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2503 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2504 card->qdio.out_qs[i]->queue_no = i;
2505 /* give outbound qeth_qdio_buffers their qdio_buffers */
2506 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2507 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2508 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2509 goto out_freeoutqbufs;
2510 }
2511 }
2512
2513 /* completion */
2514 if (qeth_alloc_cq(card))
2515 goto out_freeoutq;
2516
2517 return 0;
2518
2519 out_freeoutqbufs:
2520 while (j > 0) {
2521 --j;
2522 kmem_cache_free(qeth_qdio_outbuf_cache,
2523 card->qdio.out_qs[i]->bufs[j]);
2524 card->qdio.out_qs[i]->bufs[j] = NULL;
2525 }
2526 out_freeoutq:
2527 while (i > 0) {
2528 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2529 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2530 }
2531 kfree(card->qdio.out_qs);
2532 card->qdio.out_qs = NULL;
2533 out_freepool:
2534 qeth_free_buffer_pool(card);
2535 out_freeinq:
2536 qeth_free_qdio_queue(card->qdio.in_q);
2537 card->qdio.in_q = NULL;
2538 out_nomem:
2539 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2540 return -ENOMEM;
2541 }
2542
2543 static void qeth_free_qdio_buffers(struct qeth_card *card)
2544 {
2545 int i, j;
2546
2547 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2548 QETH_QDIO_UNINITIALIZED)
2549 return;
2550
2551 qeth_free_cq(card);
2552 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2553 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2554 if (card->qdio.in_q->bufs[j].rx_skb)
2555 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2556 }
2557 qeth_free_qdio_queue(card->qdio.in_q);
2558 card->qdio.in_q = NULL;
2559 /* inbound buffer pool */
2560 qeth_free_buffer_pool(card);
2561 /* free outbound qdio_qs */
2562 if (card->qdio.out_qs) {
2563 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2564 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2565 qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2566 }
2567 kfree(card->qdio.out_qs);
2568 card->qdio.out_qs = NULL;
2569 }
2570 }
2571
2572 static void qeth_create_qib_param_field(struct qeth_card *card,
2573 char *param_field)
2574 {
2575
2576 param_field[0] = _ascebc['P'];
2577 param_field[1] = _ascebc['C'];
2578 param_field[2] = _ascebc['I'];
2579 param_field[3] = _ascebc['T'];
2580 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2581 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2582 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2583 }
2584
2585 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2586 char *param_field)
2587 {
2588 param_field[16] = _ascebc['B'];
2589 param_field[17] = _ascebc['L'];
2590 param_field[18] = _ascebc['K'];
2591 param_field[19] = _ascebc['T'];
2592 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2593 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2594 *((unsigned int *) (&param_field[28])) =
2595 card->info.blkt.inter_packet_jumbo;
2596 }
2597
2598 static int qeth_qdio_activate(struct qeth_card *card)
2599 {
2600 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2601 return qdio_activate(CARD_DDEV(card));
2602 }
2603
2604 static int qeth_dm_act(struct qeth_card *card)
2605 {
2606 int rc;
2607 struct qeth_cmd_buffer *iob;
2608
2609 QETH_DBF_TEXT(SETUP, 2, "dmact");
2610
2611 iob = qeth_wait_for_buffer(&card->write);
2612 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2613
2614 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2615 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2616 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2617 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2618 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2619 return rc;
2620 }
2621
2622 static int qeth_mpc_initialize(struct qeth_card *card)
2623 {
2624 int rc;
2625
2626 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2627
2628 rc = qeth_issue_next_read(card);
2629 if (rc) {
2630 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2631 return rc;
2632 }
2633 rc = qeth_cm_enable(card);
2634 if (rc) {
2635 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2636 goto out_qdio;
2637 }
2638 rc = qeth_cm_setup(card);
2639 if (rc) {
2640 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2641 goto out_qdio;
2642 }
2643 rc = qeth_ulp_enable(card);
2644 if (rc) {
2645 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2646 goto out_qdio;
2647 }
2648 rc = qeth_ulp_setup(card);
2649 if (rc) {
2650 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2651 goto out_qdio;
2652 }
2653 rc = qeth_alloc_qdio_buffers(card);
2654 if (rc) {
2655 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2656 goto out_qdio;
2657 }
2658 rc = qeth_qdio_establish(card);
2659 if (rc) {
2660 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2661 qeth_free_qdio_buffers(card);
2662 goto out_qdio;
2663 }
2664 rc = qeth_qdio_activate(card);
2665 if (rc) {
2666 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2667 goto out_qdio;
2668 }
2669 rc = qeth_dm_act(card);
2670 if (rc) {
2671 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2672 goto out_qdio;
2673 }
2674
2675 return 0;
2676 out_qdio:
2677 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2678 qdio_free(CARD_DDEV(card));
2679 return rc;
2680 }
2681
2682 static void qeth_print_status_with_portname(struct qeth_card *card)
2683 {
2684 char dbf_text[15];
2685 int i;
2686
2687 sprintf(dbf_text, "%s", card->info.portname + 1);
2688 for (i = 0; i < 8; i++)
2689 dbf_text[i] =
2690 (char) _ebcasc[(__u8) dbf_text[i]];
2691 dbf_text[8] = 0;
2692 dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2693 "with link type %s (portname: %s)\n",
2694 qeth_get_cardname(card),
2695 (card->info.mcl_level[0]) ? " (level: " : "",
2696 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2697 (card->info.mcl_level[0]) ? ")" : "",
2698 qeth_get_cardname_short(card),
2699 dbf_text);
2700
2701 }
2702
2703 static void qeth_print_status_no_portname(struct qeth_card *card)
2704 {
2705 if (card->info.portname[0])
2706 dev_info(&card->gdev->dev, "Device is a%s "
2707 "card%s%s%s\nwith link type %s "
2708 "(no portname needed by interface).\n",
2709 qeth_get_cardname(card),
2710 (card->info.mcl_level[0]) ? " (level: " : "",
2711 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2712 (card->info.mcl_level[0]) ? ")" : "",
2713 qeth_get_cardname_short(card));
2714 else
2715 dev_info(&card->gdev->dev, "Device is a%s "
2716 "card%s%s%s\nwith link type %s.\n",
2717 qeth_get_cardname(card),
2718 (card->info.mcl_level[0]) ? " (level: " : "",
2719 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2720 (card->info.mcl_level[0]) ? ")" : "",
2721 qeth_get_cardname_short(card));
2722 }
2723
2724 void qeth_print_status_message(struct qeth_card *card)
2725 {
2726 switch (card->info.type) {
2727 case QETH_CARD_TYPE_OSD:
2728 case QETH_CARD_TYPE_OSM:
2729 case QETH_CARD_TYPE_OSX:
2730 /* VM will use a non-zero first character
2731 * to indicate a HiperSockets like reporting
2732 * of the level OSA sets the first character to zero
2733 * */
2734 if (!card->info.mcl_level[0]) {
2735 sprintf(card->info.mcl_level, "%02x%02x",
2736 card->info.mcl_level[2],
2737 card->info.mcl_level[3]);
2738
2739 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2740 break;
2741 }
2742 /* fallthrough */
2743 case QETH_CARD_TYPE_IQD:
2744 if ((card->info.guestlan) ||
2745 (card->info.mcl_level[0] & 0x80)) {
2746 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2747 card->info.mcl_level[0]];
2748 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2749 card->info.mcl_level[1]];
2750 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2751 card->info.mcl_level[2]];
2752 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2753 card->info.mcl_level[3]];
2754 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2755 }
2756 break;
2757 default:
2758 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2759 }
2760 if (card->info.portname_required)
2761 qeth_print_status_with_portname(card);
2762 else
2763 qeth_print_status_no_portname(card);
2764 }
2765 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2766
2767 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2768 {
2769 struct qeth_buffer_pool_entry *entry;
2770
2771 QETH_CARD_TEXT(card, 5, "inwrklst");
2772
2773 list_for_each_entry(entry,
2774 &card->qdio.init_pool.entry_list, init_list) {
2775 qeth_put_buffer_pool_entry(card, entry);
2776 }
2777 }
2778
2779 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2780 struct qeth_card *card)
2781 {
2782 struct list_head *plh;
2783 struct qeth_buffer_pool_entry *entry;
2784 int i, free;
2785 struct page *page;
2786
2787 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2788 return NULL;
2789
2790 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2791 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2792 free = 1;
2793 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2794 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2795 free = 0;
2796 break;
2797 }
2798 }
2799 if (free) {
2800 list_del_init(&entry->list);
2801 return entry;
2802 }
2803 }
2804
2805 /* no free buffer in pool so take first one and swap pages */
2806 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2807 struct qeth_buffer_pool_entry, list);
2808 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2809 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2810 page = alloc_page(GFP_ATOMIC);
2811 if (!page) {
2812 return NULL;
2813 } else {
2814 free_page((unsigned long)entry->elements[i]);
2815 entry->elements[i] = page_address(page);
2816 if (card->options.performance_stats)
2817 card->perf_stats.sg_alloc_page_rx++;
2818 }
2819 }
2820 }
2821 list_del_init(&entry->list);
2822 return entry;
2823 }
2824
2825 static int qeth_init_input_buffer(struct qeth_card *card,
2826 struct qeth_qdio_buffer *buf)
2827 {
2828 struct qeth_buffer_pool_entry *pool_entry;
2829 int i;
2830
2831 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2832 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2833 if (!buf->rx_skb)
2834 return 1;
2835 }
2836
2837 pool_entry = qeth_find_free_buffer_pool_entry(card);
2838 if (!pool_entry)
2839 return 1;
2840
2841 /*
2842 * since the buffer is accessed only from the input_tasklet
2843 * there shouldn't be a need to synchronize; also, since we use
2844 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2845 * buffers
2846 */
2847
2848 buf->pool_entry = pool_entry;
2849 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2850 buf->buffer->element[i].length = PAGE_SIZE;
2851 buf->buffer->element[i].addr = pool_entry->elements[i];
2852 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2853 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2854 else
2855 buf->buffer->element[i].eflags = 0;
2856 buf->buffer->element[i].sflags = 0;
2857 }
2858 return 0;
2859 }
2860
2861 int qeth_init_qdio_queues(struct qeth_card *card)
2862 {
2863 int i, j;
2864 int rc;
2865
2866 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2867
2868 /* inbound queue */
2869 qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2870 QDIO_MAX_BUFFERS_PER_Q);
2871 qeth_initialize_working_pool_list(card);
2872 /*give only as many buffers to hardware as we have buffer pool entries*/
2873 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2874 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2875 card->qdio.in_q->next_buf_to_init =
2876 card->qdio.in_buf_pool.buf_count - 1;
2877 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2878 card->qdio.in_buf_pool.buf_count - 1);
2879 if (rc) {
2880 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2881 return rc;
2882 }
2883
2884 /* completion */
2885 rc = qeth_cq_init(card);
2886 if (rc) {
2887 return rc;
2888 }
2889
2890 /* outbound queue */
2891 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2892 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2893 QDIO_MAX_BUFFERS_PER_Q);
2894 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2895 qeth_clear_output_buffer(card->qdio.out_qs[i],
2896 card->qdio.out_qs[i]->bufs[j],
2897 QETH_QDIO_BUF_EMPTY);
2898 }
2899 card->qdio.out_qs[i]->card = card;
2900 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2901 card->qdio.out_qs[i]->do_pack = 0;
2902 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2903 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2904 atomic_set(&card->qdio.out_qs[i]->state,
2905 QETH_OUT_Q_UNLOCKED);
2906 }
2907 return 0;
2908 }
2909 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2910
2911 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2912 {
2913 switch (link_type) {
2914 case QETH_LINK_TYPE_HSTR:
2915 return 2;
2916 default:
2917 return 1;
2918 }
2919 }
2920
2921 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2922 struct qeth_ipa_cmd *cmd, __u8 command,
2923 enum qeth_prot_versions prot)
2924 {
2925 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2926 cmd->hdr.command = command;
2927 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2928 cmd->hdr.seqno = card->seqno.ipa;
2929 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2930 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2931 if (card->options.layer2)
2932 cmd->hdr.prim_version_no = 2;
2933 else
2934 cmd->hdr.prim_version_no = 1;
2935 cmd->hdr.param_count = 1;
2936 cmd->hdr.prot_version = prot;
2937 cmd->hdr.ipa_supported = 0;
2938 cmd->hdr.ipa_enabled = 0;
2939 }
2940
2941 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2942 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2943 {
2944 struct qeth_cmd_buffer *iob;
2945 struct qeth_ipa_cmd *cmd;
2946
2947 iob = qeth_get_buffer(&card->write);
2948 if (iob) {
2949 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2950 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2951 } else {
2952 dev_warn(&card->gdev->dev,
2953 "The qeth driver ran out of channel command buffers\n");
2954 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2955 dev_name(&card->gdev->dev));
2956 }
2957
2958 return iob;
2959 }
2960 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2961
2962 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2963 char prot_type)
2964 {
2965 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2966 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2967 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2968 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2969 }
2970 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2971
2972 /**
2973 * qeth_send_ipa_cmd() - send an IPA command
2974 *
2975 * See qeth_send_control_data() for explanation of the arguments.
2976 */
2977
2978 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2979 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2980 unsigned long),
2981 void *reply_param)
2982 {
2983 int rc;
2984 char prot_type;
2985
2986 QETH_CARD_TEXT(card, 4, "sendipa");
2987
2988 if (card->options.layer2)
2989 if (card->info.type == QETH_CARD_TYPE_OSN)
2990 prot_type = QETH_PROT_OSN2;
2991 else
2992 prot_type = QETH_PROT_LAYER2;
2993 else
2994 prot_type = QETH_PROT_TCPIP;
2995 qeth_prepare_ipa_cmd(card, iob, prot_type);
2996 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2997 iob, reply_cb, reply_param);
2998 if (rc == -ETIME) {
2999 qeth_clear_ipacmd_list(card);
3000 qeth_schedule_recovery(card);
3001 }
3002 return rc;
3003 }
3004 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3005
3006 int qeth_send_startlan(struct qeth_card *card)
3007 {
3008 int rc;
3009 struct qeth_cmd_buffer *iob;
3010
3011 QETH_DBF_TEXT(SETUP, 2, "strtlan");
3012
3013 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
3014 if (!iob)
3015 return -ENOMEM;
3016 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
3017 return rc;
3018 }
3019 EXPORT_SYMBOL_GPL(qeth_send_startlan);
3020
3021 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
3022 struct qeth_reply *reply, unsigned long data)
3023 {
3024 struct qeth_ipa_cmd *cmd;
3025
3026 QETH_CARD_TEXT(card, 4, "defadpcb");
3027
3028 cmd = (struct qeth_ipa_cmd *) data;
3029 if (cmd->hdr.return_code == 0)
3030 cmd->hdr.return_code =
3031 cmd->data.setadapterparms.hdr.return_code;
3032 return 0;
3033 }
3034
3035 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3036 struct qeth_reply *reply, unsigned long data)
3037 {
3038 struct qeth_ipa_cmd *cmd;
3039
3040 QETH_CARD_TEXT(card, 3, "quyadpcb");
3041
3042 cmd = (struct qeth_ipa_cmd *) data;
3043 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
3044 card->info.link_type =
3045 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3046 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3047 }
3048 card->options.adp.supported_funcs =
3049 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3050 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3051 }
3052
3053 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3054 __u32 command, __u32 cmdlen)
3055 {
3056 struct qeth_cmd_buffer *iob;
3057 struct qeth_ipa_cmd *cmd;
3058
3059 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3060 QETH_PROT_IPV4);
3061 if (iob) {
3062 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3063 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3064 cmd->data.setadapterparms.hdr.command_code = command;
3065 cmd->data.setadapterparms.hdr.used_total = 1;
3066 cmd->data.setadapterparms.hdr.seq_no = 1;
3067 }
3068
3069 return iob;
3070 }
3071
3072 int qeth_query_setadapterparms(struct qeth_card *card)
3073 {
3074 int rc;
3075 struct qeth_cmd_buffer *iob;
3076
3077 QETH_CARD_TEXT(card, 3, "queryadp");
3078 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3079 sizeof(struct qeth_ipacmd_setadpparms));
3080 if (!iob)
3081 return -ENOMEM;
3082 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3083 return rc;
3084 }
3085 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3086
3087 static int qeth_query_ipassists_cb(struct qeth_card *card,
3088 struct qeth_reply *reply, unsigned long data)
3089 {
3090 struct qeth_ipa_cmd *cmd;
3091
3092 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3093
3094 cmd = (struct qeth_ipa_cmd *) data;
3095
3096 switch (cmd->hdr.return_code) {
3097 case IPA_RC_NOTSUPP:
3098 case IPA_RC_L2_UNSUPPORTED_CMD:
3099 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3100 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3101 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3102 return -0;
3103 default:
3104 if (cmd->hdr.return_code) {
3105 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3106 "rc=%d\n",
3107 dev_name(&card->gdev->dev),
3108 cmd->hdr.return_code);
3109 return 0;
3110 }
3111 }
3112
3113 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3114 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3115 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3116 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3117 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3118 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3119 } else
3120 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3121 "\n", dev_name(&card->gdev->dev));
3122 return 0;
3123 }
3124
3125 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3126 {
3127 int rc;
3128 struct qeth_cmd_buffer *iob;
3129
3130 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3131 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3132 if (!iob)
3133 return -ENOMEM;
3134 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3135 return rc;
3136 }
3137 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3138
3139 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3140 struct qeth_reply *reply, unsigned long data)
3141 {
3142 struct qeth_ipa_cmd *cmd;
3143 struct qeth_switch_info *sw_info;
3144 struct qeth_query_switch_attributes *attrs;
3145
3146 QETH_CARD_TEXT(card, 2, "qswiatcb");
3147 cmd = (struct qeth_ipa_cmd *) data;
3148 sw_info = (struct qeth_switch_info *)reply->param;
3149 if (cmd->data.setadapterparms.hdr.return_code == 0) {
3150 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3151 sw_info->capabilities = attrs->capabilities;
3152 sw_info->settings = attrs->settings;
3153 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3154 sw_info->settings);
3155 }
3156 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3157
3158 return 0;
3159 }
3160
3161 int qeth_query_switch_attributes(struct qeth_card *card,
3162 struct qeth_switch_info *sw_info)
3163 {
3164 struct qeth_cmd_buffer *iob;
3165
3166 QETH_CARD_TEXT(card, 2, "qswiattr");
3167 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3168 return -EOPNOTSUPP;
3169 if (!netif_carrier_ok(card->dev))
3170 return -ENOMEDIUM;
3171 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3172 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3173 if (!iob)
3174 return -ENOMEM;
3175 return qeth_send_ipa_cmd(card, iob,
3176 qeth_query_switch_attributes_cb, sw_info);
3177 }
3178 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3179
3180 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3181 struct qeth_reply *reply, unsigned long data)
3182 {
3183 struct qeth_ipa_cmd *cmd;
3184 __u16 rc;
3185
3186 cmd = (struct qeth_ipa_cmd *)data;
3187 rc = cmd->hdr.return_code;
3188 if (rc)
3189 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3190 else
3191 card->info.diagass_support = cmd->data.diagass.ext;
3192 return 0;
3193 }
3194
3195 static int qeth_query_setdiagass(struct qeth_card *card)
3196 {
3197 struct qeth_cmd_buffer *iob;
3198 struct qeth_ipa_cmd *cmd;
3199
3200 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3201 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3202 if (!iob)
3203 return -ENOMEM;
3204 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3205 cmd->data.diagass.subcmd_len = 16;
3206 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3207 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3208 }
3209
3210 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3211 {
3212 unsigned long info = get_zeroed_page(GFP_KERNEL);
3213 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3214 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3215 struct ccw_dev_id ccwid;
3216 int level;
3217
3218 tid->chpid = card->info.chpid;
3219 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3220 tid->ssid = ccwid.ssid;
3221 tid->devno = ccwid.devno;
3222 if (!info)
3223 return;
3224 level = stsi(NULL, 0, 0, 0);
3225 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3226 tid->lparnr = info222->lpar_number;
3227 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3228 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3229 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3230 }
3231 free_page(info);
3232 return;
3233 }
3234
3235 static int qeth_hw_trap_cb(struct qeth_card *card,
3236 struct qeth_reply *reply, unsigned long data)
3237 {
3238 struct qeth_ipa_cmd *cmd;
3239 __u16 rc;
3240
3241 cmd = (struct qeth_ipa_cmd *)data;
3242 rc = cmd->hdr.return_code;
3243 if (rc)
3244 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3245 return 0;
3246 }
3247
3248 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3249 {
3250 struct qeth_cmd_buffer *iob;
3251 struct qeth_ipa_cmd *cmd;
3252
3253 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3254 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3255 if (!iob)
3256 return -ENOMEM;
3257 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3258 cmd->data.diagass.subcmd_len = 80;
3259 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3260 cmd->data.diagass.type = 1;
3261 cmd->data.diagass.action = action;
3262 switch (action) {
3263 case QETH_DIAGS_TRAP_ARM:
3264 cmd->data.diagass.options = 0x0003;
3265 cmd->data.diagass.ext = 0x00010000 +
3266 sizeof(struct qeth_trap_id);
3267 qeth_get_trap_id(card,
3268 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3269 break;
3270 case QETH_DIAGS_TRAP_DISARM:
3271 cmd->data.diagass.options = 0x0001;
3272 break;
3273 case QETH_DIAGS_TRAP_CAPTURE:
3274 break;
3275 }
3276 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3277 }
3278 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3279
3280 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3281 unsigned int qdio_error, const char *dbftext)
3282 {
3283 if (qdio_error) {
3284 QETH_CARD_TEXT(card, 2, dbftext);
3285 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3286 buf->element[15].sflags);
3287 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3288 buf->element[14].sflags);
3289 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3290 if ((buf->element[15].sflags) == 0x12) {
3291 card->stats.rx_dropped++;
3292 return 0;
3293 } else
3294 return 1;
3295 }
3296 return 0;
3297 }
3298 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3299
3300 static void qeth_buffer_reclaim_work(struct work_struct *work)
3301 {
3302 struct qeth_card *card = container_of(work, struct qeth_card,
3303 buffer_reclaim_work.work);
3304
3305 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3306 qeth_queue_input_buffer(card, card->reclaim_index);
3307 }
3308
3309 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3310 {
3311 struct qeth_qdio_q *queue = card->qdio.in_q;
3312 struct list_head *lh;
3313 int count;
3314 int i;
3315 int rc;
3316 int newcount = 0;
3317
3318 count = (index < queue->next_buf_to_init)?
3319 card->qdio.in_buf_pool.buf_count -
3320 (queue->next_buf_to_init - index) :
3321 card->qdio.in_buf_pool.buf_count -
3322 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3323 /* only requeue at a certain threshold to avoid SIGAs */
3324 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3325 for (i = queue->next_buf_to_init;
3326 i < queue->next_buf_to_init + count; ++i) {
3327 if (qeth_init_input_buffer(card,
3328 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3329 break;
3330 } else {
3331 newcount++;
3332 }
3333 }
3334
3335 if (newcount < count) {
3336 /* we are in memory shortage so we switch back to
3337 traditional skb allocation and drop packages */
3338 atomic_set(&card->force_alloc_skb, 3);
3339 count = newcount;
3340 } else {
3341 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3342 }
3343
3344 if (!count) {
3345 i = 0;
3346 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3347 i++;
3348 if (i == card->qdio.in_buf_pool.buf_count) {
3349 QETH_CARD_TEXT(card, 2, "qsarbw");
3350 card->reclaim_index = index;
3351 schedule_delayed_work(
3352 &card->buffer_reclaim_work,
3353 QETH_RECLAIM_WORK_TIME);
3354 }
3355 return;
3356 }
3357
3358 /*
3359 * according to old code it should be avoided to requeue all
3360 * 128 buffers in order to benefit from PCI avoidance.
3361 * this function keeps at least one buffer (the buffer at
3362 * 'index') un-requeued -> this buffer is the first buffer that
3363 * will be requeued the next time
3364 */
3365 if (card->options.performance_stats) {
3366 card->perf_stats.inbound_do_qdio_cnt++;
3367 card->perf_stats.inbound_do_qdio_start_time =
3368 qeth_get_micros();
3369 }
3370 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3371 queue->next_buf_to_init, count);
3372 if (card->options.performance_stats)
3373 card->perf_stats.inbound_do_qdio_time +=
3374 qeth_get_micros() -
3375 card->perf_stats.inbound_do_qdio_start_time;
3376 if (rc) {
3377 QETH_CARD_TEXT(card, 2, "qinberr");
3378 }
3379 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3380 QDIO_MAX_BUFFERS_PER_Q;
3381 }
3382 }
3383 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3384
3385 static int qeth_handle_send_error(struct qeth_card *card,
3386 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3387 {
3388 int sbalf15 = buffer->buffer->element[15].sflags;
3389
3390 QETH_CARD_TEXT(card, 6, "hdsnderr");
3391 if (card->info.type == QETH_CARD_TYPE_IQD) {
3392 if (sbalf15 == 0) {
3393 qdio_err = 0;
3394 } else {
3395 qdio_err = 1;
3396 }
3397 }
3398 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3399
3400 if (!qdio_err)
3401 return QETH_SEND_ERROR_NONE;
3402
3403 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3404 return QETH_SEND_ERROR_RETRY;
3405
3406 QETH_CARD_TEXT(card, 1, "lnkfail");
3407 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3408 (u16)qdio_err, (u8)sbalf15);
3409 return QETH_SEND_ERROR_LINK_FAILURE;
3410 }
3411
3412 /*
3413 * Switched to packing state if the number of used buffers on a queue
3414 * reaches a certain limit.
3415 */
3416 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3417 {
3418 if (!queue->do_pack) {
3419 if (atomic_read(&queue->used_buffers)
3420 >= QETH_HIGH_WATERMARK_PACK){
3421 /* switch non-PACKING -> PACKING */
3422 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3423 if (queue->card->options.performance_stats)
3424 queue->card->perf_stats.sc_dp_p++;
3425 queue->do_pack = 1;
3426 }
3427 }
3428 }
3429
3430 /*
3431 * Switches from packing to non-packing mode. If there is a packing
3432 * buffer on the queue this buffer will be prepared to be flushed.
3433 * In that case 1 is returned to inform the caller. If no buffer
3434 * has to be flushed, zero is returned.
3435 */
3436 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3437 {
3438 struct qeth_qdio_out_buffer *buffer;
3439 int flush_count = 0;
3440
3441 if (queue->do_pack) {
3442 if (atomic_read(&queue->used_buffers)
3443 <= QETH_LOW_WATERMARK_PACK) {
3444 /* switch PACKING -> non-PACKING */
3445 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3446 if (queue->card->options.performance_stats)
3447 queue->card->perf_stats.sc_p_dp++;
3448 queue->do_pack = 0;
3449 /* flush packing buffers */
3450 buffer = queue->bufs[queue->next_buf_to_fill];
3451 if ((atomic_read(&buffer->state) ==
3452 QETH_QDIO_BUF_EMPTY) &&
3453 (buffer->next_element_to_fill > 0)) {
3454 atomic_set(&buffer->state,
3455 QETH_QDIO_BUF_PRIMED);
3456 flush_count++;
3457 queue->next_buf_to_fill =
3458 (queue->next_buf_to_fill + 1) %
3459 QDIO_MAX_BUFFERS_PER_Q;
3460 }
3461 }
3462 }
3463 return flush_count;
3464 }
3465
3466
3467 /*
3468 * Called to flush a packing buffer if no more pci flags are on the queue.
3469 * Checks if there is a packing buffer and prepares it to be flushed.
3470 * In that case returns 1, otherwise zero.
3471 */
3472 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3473 {
3474 struct qeth_qdio_out_buffer *buffer;
3475
3476 buffer = queue->bufs[queue->next_buf_to_fill];
3477 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3478 (buffer->next_element_to_fill > 0)) {
3479 /* it's a packing buffer */
3480 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3481 queue->next_buf_to_fill =
3482 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3483 return 1;
3484 }
3485 return 0;
3486 }
3487
3488 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3489 int count)
3490 {
3491 struct qeth_qdio_out_buffer *buf;
3492 int rc;
3493 int i;
3494 unsigned int qdio_flags;
3495
3496 for (i = index; i < index + count; ++i) {
3497 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3498 buf = queue->bufs[bidx];
3499 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3500 SBAL_EFLAGS_LAST_ENTRY;
3501
3502 if (queue->bufstates)
3503 queue->bufstates[bidx].user = buf;
3504
3505 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3506 continue;
3507
3508 if (!queue->do_pack) {
3509 if ((atomic_read(&queue->used_buffers) >=
3510 (QETH_HIGH_WATERMARK_PACK -
3511 QETH_WATERMARK_PACK_FUZZ)) &&
3512 !atomic_read(&queue->set_pci_flags_count)) {
3513 /* it's likely that we'll go to packing
3514 * mode soon */
3515 atomic_inc(&queue->set_pci_flags_count);
3516 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3517 }
3518 } else {
3519 if (!atomic_read(&queue->set_pci_flags_count)) {
3520 /*
3521 * there's no outstanding PCI any more, so we
3522 * have to request a PCI to be sure the the PCI
3523 * will wake at some time in the future then we
3524 * can flush packed buffers that might still be
3525 * hanging around, which can happen if no
3526 * further send was requested by the stack
3527 */
3528 atomic_inc(&queue->set_pci_flags_count);
3529 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3530 }
3531 }
3532 }
3533
3534 queue->card->dev->trans_start = jiffies;
3535 if (queue->card->options.performance_stats) {
3536 queue->card->perf_stats.outbound_do_qdio_cnt++;
3537 queue->card->perf_stats.outbound_do_qdio_start_time =
3538 qeth_get_micros();
3539 }
3540 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3541 if (atomic_read(&queue->set_pci_flags_count))
3542 qdio_flags |= QDIO_FLAG_PCI_OUT;
3543 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3544 queue->queue_no, index, count);
3545 if (queue->card->options.performance_stats)
3546 queue->card->perf_stats.outbound_do_qdio_time +=
3547 qeth_get_micros() -
3548 queue->card->perf_stats.outbound_do_qdio_start_time;
3549 atomic_add(count, &queue->used_buffers);
3550 if (rc) {
3551 queue->card->stats.tx_errors += count;
3552 /* ignore temporary SIGA errors without busy condition */
3553 if (rc == -ENOBUFS)
3554 return;
3555 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3556 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3557 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3558 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3559 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3560
3561 /* this must not happen under normal circumstances. if it
3562 * happens something is really wrong -> recover */
3563 qeth_schedule_recovery(queue->card);
3564 return;
3565 }
3566 if (queue->card->options.performance_stats)
3567 queue->card->perf_stats.bufs_sent += count;
3568 }
3569
3570 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3571 {
3572 int index;
3573 int flush_cnt = 0;
3574 int q_was_packing = 0;
3575
3576 /*
3577 * check if weed have to switch to non-packing mode or if
3578 * we have to get a pci flag out on the queue
3579 */
3580 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3581 !atomic_read(&queue->set_pci_flags_count)) {
3582 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3583 QETH_OUT_Q_UNLOCKED) {
3584 /*
3585 * If we get in here, there was no action in
3586 * do_send_packet. So, we check if there is a
3587 * packing buffer to be flushed here.
3588 */
3589 netif_stop_queue(queue->card->dev);
3590 index = queue->next_buf_to_fill;
3591 q_was_packing = queue->do_pack;
3592 /* queue->do_pack may change */
3593 barrier();
3594 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3595 if (!flush_cnt &&
3596 !atomic_read(&queue->set_pci_flags_count))
3597 flush_cnt +=
3598 qeth_flush_buffers_on_no_pci(queue);
3599 if (queue->card->options.performance_stats &&
3600 q_was_packing)
3601 queue->card->perf_stats.bufs_sent_pack +=
3602 flush_cnt;
3603 if (flush_cnt)
3604 qeth_flush_buffers(queue, index, flush_cnt);
3605 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3606 }
3607 }
3608 }
3609
3610 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3611 unsigned long card_ptr)
3612 {
3613 struct qeth_card *card = (struct qeth_card *)card_ptr;
3614
3615 if (card->dev && (card->dev->flags & IFF_UP))
3616 napi_schedule(&card->napi);
3617 }
3618 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3619
3620 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3621 {
3622 int rc;
3623
3624 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3625 rc = -1;
3626 goto out;
3627 } else {
3628 if (card->options.cq == cq) {
3629 rc = 0;
3630 goto out;
3631 }
3632
3633 if (card->state != CARD_STATE_DOWN &&
3634 card->state != CARD_STATE_RECOVER) {
3635 rc = -1;
3636 goto out;
3637 }
3638
3639 qeth_free_qdio_buffers(card);
3640 card->options.cq = cq;
3641 rc = 0;
3642 }
3643 out:
3644 return rc;
3645
3646 }
3647 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3648
3649
3650 static void qeth_qdio_cq_handler(struct qeth_card *card,
3651 unsigned int qdio_err,
3652 unsigned int queue, int first_element, int count) {
3653 struct qeth_qdio_q *cq = card->qdio.c_q;
3654 int i;
3655 int rc;
3656
3657 if (!qeth_is_cq(card, queue))
3658 goto out;
3659
3660 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3661 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3662 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3663
3664 if (qdio_err) {
3665 netif_stop_queue(card->dev);
3666 qeth_schedule_recovery(card);
3667 goto out;
3668 }
3669
3670 if (card->options.performance_stats) {
3671 card->perf_stats.cq_cnt++;
3672 card->perf_stats.cq_start_time = qeth_get_micros();
3673 }
3674
3675 for (i = first_element; i < first_element + count; ++i) {
3676 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3677 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3678 int e;
3679
3680 e = 0;
3681 while (buffer->element[e].addr) {
3682 unsigned long phys_aob_addr;
3683
3684 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3685 qeth_qdio_handle_aob(card, phys_aob_addr);
3686 buffer->element[e].addr = NULL;
3687 buffer->element[e].eflags = 0;
3688 buffer->element[e].sflags = 0;
3689 buffer->element[e].length = 0;
3690
3691 ++e;
3692 }
3693
3694 buffer->element[15].eflags = 0;
3695 buffer->element[15].sflags = 0;
3696 }
3697 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3698 card->qdio.c_q->next_buf_to_init,
3699 count);
3700 if (rc) {
3701 dev_warn(&card->gdev->dev,
3702 "QDIO reported an error, rc=%i\n", rc);
3703 QETH_CARD_TEXT(card, 2, "qcqherr");
3704 }
3705 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3706 + count) % QDIO_MAX_BUFFERS_PER_Q;
3707
3708 netif_wake_queue(card->dev);
3709
3710 if (card->options.performance_stats) {
3711 int delta_t = qeth_get_micros();
3712 delta_t -= card->perf_stats.cq_start_time;
3713 card->perf_stats.cq_time += delta_t;
3714 }
3715 out:
3716 return;
3717 }
3718
3719 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3720 unsigned int queue, int first_elem, int count,
3721 unsigned long card_ptr)
3722 {
3723 struct qeth_card *card = (struct qeth_card *)card_ptr;
3724
3725 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3726 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3727
3728 if (qeth_is_cq(card, queue))
3729 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3730 else if (qdio_err)
3731 qeth_schedule_recovery(card);
3732
3733
3734 }
3735 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3736
3737 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3738 unsigned int qdio_error, int __queue, int first_element,
3739 int count, unsigned long card_ptr)
3740 {
3741 struct qeth_card *card = (struct qeth_card *) card_ptr;
3742 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3743 struct qeth_qdio_out_buffer *buffer;
3744 int i;
3745
3746 QETH_CARD_TEXT(card, 6, "qdouhdl");
3747 if (qdio_error & QDIO_ERROR_FATAL) {
3748 QETH_CARD_TEXT(card, 2, "achkcond");
3749 netif_stop_queue(card->dev);
3750 qeth_schedule_recovery(card);
3751 return;
3752 }
3753 if (card->options.performance_stats) {
3754 card->perf_stats.outbound_handler_cnt++;
3755 card->perf_stats.outbound_handler_start_time =
3756 qeth_get_micros();
3757 }
3758 for (i = first_element; i < (first_element + count); ++i) {
3759 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3760 buffer = queue->bufs[bidx];
3761 qeth_handle_send_error(card, buffer, qdio_error);
3762
3763 if (queue->bufstates &&
3764 (queue->bufstates[bidx].flags &
3765 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3766 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3767
3768 if (atomic_cmpxchg(&buffer->state,
3769 QETH_QDIO_BUF_PRIMED,
3770 QETH_QDIO_BUF_PENDING) ==
3771 QETH_QDIO_BUF_PRIMED) {
3772 qeth_notify_skbs(queue, buffer,
3773 TX_NOTIFY_PENDING);
3774 }
3775 buffer->aob = queue->bufstates[bidx].aob;
3776 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3777 QETH_CARD_TEXT(queue->card, 5, "aob");
3778 QETH_CARD_TEXT_(queue->card, 5, "%lx",
3779 virt_to_phys(buffer->aob));
3780 if (qeth_init_qdio_out_buf(queue, bidx)) {
3781 QETH_CARD_TEXT(card, 2, "outofbuf");
3782 qeth_schedule_recovery(card);
3783 }
3784 } else {
3785 if (card->options.cq == QETH_CQ_ENABLED) {
3786 enum iucv_tx_notify n;
3787
3788 n = qeth_compute_cq_notification(
3789 buffer->buffer->element[15].sflags, 0);
3790 qeth_notify_skbs(queue, buffer, n);
3791 }
3792
3793 qeth_clear_output_buffer(queue, buffer,
3794 QETH_QDIO_BUF_EMPTY);
3795 }
3796 qeth_cleanup_handled_pending(queue, bidx, 0);
3797 }
3798 atomic_sub(count, &queue->used_buffers);
3799 /* check if we need to do something on this outbound queue */
3800 if (card->info.type != QETH_CARD_TYPE_IQD)
3801 qeth_check_outbound_queue(queue);
3802
3803 netif_wake_queue(queue->card->dev);
3804 if (card->options.performance_stats)
3805 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3806 card->perf_stats.outbound_handler_start_time;
3807 }
3808 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3809
3810 /**
3811 * Note: Function assumes that we have 4 outbound queues.
3812 */
3813 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3814 int ipv, int cast_type)
3815 {
3816 __be16 *tci;
3817 u8 tos;
3818
3819 if (cast_type && card->info.is_multicast_different)
3820 return card->info.is_multicast_different &
3821 (card->qdio.no_out_queues - 1);
3822
3823 switch (card->qdio.do_prio_queueing) {
3824 case QETH_PRIO_Q_ING_TOS:
3825 case QETH_PRIO_Q_ING_PREC:
3826 switch (ipv) {
3827 case 4:
3828 tos = ipv4_get_dsfield(ip_hdr(skb));
3829 break;
3830 case 6:
3831 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3832 break;
3833 default:
3834 return card->qdio.default_out_queue;
3835 }
3836 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3837 return ~tos >> 6 & 3;
3838 if (tos & IPTOS_MINCOST)
3839 return 3;
3840 if (tos & IPTOS_RELIABILITY)
3841 return 2;
3842 if (tos & IPTOS_THROUGHPUT)
3843 return 1;
3844 if (tos & IPTOS_LOWDELAY)
3845 return 0;
3846 break;
3847 case QETH_PRIO_Q_ING_SKB:
3848 if (skb->priority > 5)
3849 return 0;
3850 return ~skb->priority >> 1 & 3;
3851 case QETH_PRIO_Q_ING_VLAN:
3852 tci = &((struct ethhdr *)skb->data)->h_proto;
3853 if (*tci == ETH_P_8021Q)
3854 return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3;
3855 break;
3856 default:
3857 break;
3858 }
3859 return card->qdio.default_out_queue;
3860 }
3861 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3862
3863 int qeth_get_elements_for_frags(struct sk_buff *skb)
3864 {
3865 int cnt, length, e, elements = 0;
3866 struct skb_frag_struct *frag;
3867 char *data;
3868
3869 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3870 frag = &skb_shinfo(skb)->frags[cnt];
3871 data = (char *)page_to_phys(skb_frag_page(frag)) +
3872 frag->page_offset;
3873 length = frag->size;
3874 e = PFN_UP((unsigned long)data + length - 1) -
3875 PFN_DOWN((unsigned long)data);
3876 elements += e;
3877 }
3878 return elements;
3879 }
3880 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3881
3882 int qeth_get_elements_no(struct qeth_card *card,
3883 struct sk_buff *skb, int elems)
3884 {
3885 int dlen = skb->len - skb->data_len;
3886 int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3887 PFN_DOWN((unsigned long)skb->data);
3888
3889 elements_needed += qeth_get_elements_for_frags(skb);
3890
3891 if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3892 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3893 "(Number=%d / Length=%d). Discarded.\n",
3894 (elements_needed+elems), skb->len);
3895 return 0;
3896 }
3897 return elements_needed;
3898 }
3899 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3900
3901 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3902 {
3903 int hroom, inpage, rest;
3904
3905 if (((unsigned long)skb->data & PAGE_MASK) !=
3906 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3907 hroom = skb_headroom(skb);
3908 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3909 rest = len - inpage;
3910 if (rest > hroom)
3911 return 1;
3912 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3913 skb->data -= rest;
3914 skb->tail -= rest;
3915 *hdr = (struct qeth_hdr *)skb->data;
3916 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3917 }
3918 return 0;
3919 }
3920 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3921
3922 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3923 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3924 int offset)
3925 {
3926 int length = skb->len - skb->data_len;
3927 int length_here;
3928 int element;
3929 char *data;
3930 int first_lap, cnt;
3931 struct skb_frag_struct *frag;
3932
3933 element = *next_element_to_fill;
3934 data = skb->data;
3935 first_lap = (is_tso == 0 ? 1 : 0);
3936
3937 if (offset >= 0) {
3938 data = skb->data + offset;
3939 length -= offset;
3940 first_lap = 0;
3941 }
3942
3943 while (length > 0) {
3944 /* length_here is the remaining amount of data in this page */
3945 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3946 if (length < length_here)
3947 length_here = length;
3948
3949 buffer->element[element].addr = data;
3950 buffer->element[element].length = length_here;
3951 length -= length_here;
3952 if (!length) {
3953 if (first_lap)
3954 if (skb_shinfo(skb)->nr_frags)
3955 buffer->element[element].eflags =
3956 SBAL_EFLAGS_FIRST_FRAG;
3957 else
3958 buffer->element[element].eflags = 0;
3959 else
3960 buffer->element[element].eflags =
3961 SBAL_EFLAGS_MIDDLE_FRAG;
3962 } else {
3963 if (first_lap)
3964 buffer->element[element].eflags =
3965 SBAL_EFLAGS_FIRST_FRAG;
3966 else
3967 buffer->element[element].eflags =
3968 SBAL_EFLAGS_MIDDLE_FRAG;
3969 }
3970 data += length_here;
3971 element++;
3972 first_lap = 0;
3973 }
3974
3975 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3976 frag = &skb_shinfo(skb)->frags[cnt];
3977 data = (char *)page_to_phys(skb_frag_page(frag)) +
3978 frag->page_offset;
3979 length = frag->size;
3980 while (length > 0) {
3981 length_here = PAGE_SIZE -
3982 ((unsigned long) data % PAGE_SIZE);
3983 if (length < length_here)
3984 length_here = length;
3985
3986 buffer->element[element].addr = data;
3987 buffer->element[element].length = length_here;
3988 buffer->element[element].eflags =
3989 SBAL_EFLAGS_MIDDLE_FRAG;
3990 length -= length_here;
3991 data += length_here;
3992 element++;
3993 }
3994 }
3995
3996 if (buffer->element[element - 1].eflags)
3997 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3998 *next_element_to_fill = element;
3999 }
4000
4001 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
4002 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
4003 struct qeth_hdr *hdr, int offset, int hd_len)
4004 {
4005 struct qdio_buffer *buffer;
4006 int flush_cnt = 0, hdr_len, large_send = 0;
4007
4008 buffer = buf->buffer;
4009 atomic_inc(&skb->users);
4010 skb_queue_tail(&buf->skb_list, skb);
4011
4012 /*check first on TSO ....*/
4013 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
4014 int element = buf->next_element_to_fill;
4015
4016 hdr_len = sizeof(struct qeth_hdr_tso) +
4017 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
4018 /*fill first buffer entry only with header information */
4019 buffer->element[element].addr = skb->data;
4020 buffer->element[element].length = hdr_len;
4021 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4022 buf->next_element_to_fill++;
4023 skb->data += hdr_len;
4024 skb->len -= hdr_len;
4025 large_send = 1;
4026 }
4027
4028 if (offset >= 0) {
4029 int element = buf->next_element_to_fill;
4030 buffer->element[element].addr = hdr;
4031 buffer->element[element].length = sizeof(struct qeth_hdr) +
4032 hd_len;
4033 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4034 buf->is_header[element] = 1;
4035 buf->next_element_to_fill++;
4036 }
4037
4038 __qeth_fill_buffer(skb, buffer, large_send,
4039 (int *)&buf->next_element_to_fill, offset);
4040
4041 if (!queue->do_pack) {
4042 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4043 /* set state to PRIMED -> will be flushed */
4044 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4045 flush_cnt = 1;
4046 } else {
4047 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4048 if (queue->card->options.performance_stats)
4049 queue->card->perf_stats.skbs_sent_pack++;
4050 if (buf->next_element_to_fill >=
4051 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4052 /*
4053 * packed buffer if full -> set state PRIMED
4054 * -> will be flushed
4055 */
4056 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4057 flush_cnt = 1;
4058 }
4059 }
4060 return flush_cnt;
4061 }
4062
4063 int qeth_do_send_packet_fast(struct qeth_card *card,
4064 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4065 struct qeth_hdr *hdr, int elements_needed,
4066 int offset, int hd_len)
4067 {
4068 struct qeth_qdio_out_buffer *buffer;
4069 int index;
4070
4071 /* spin until we get the queue ... */
4072 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4073 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4074 /* ... now we've got the queue */
4075 index = queue->next_buf_to_fill;
4076 buffer = queue->bufs[queue->next_buf_to_fill];
4077 /*
4078 * check if buffer is empty to make sure that we do not 'overtake'
4079 * ourselves and try to fill a buffer that is already primed
4080 */
4081 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4082 goto out;
4083 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4084 QDIO_MAX_BUFFERS_PER_Q;
4085 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4086 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4087 qeth_flush_buffers(queue, index, 1);
4088 return 0;
4089 out:
4090 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4091 return -EBUSY;
4092 }
4093 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4094
4095 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4096 struct sk_buff *skb, struct qeth_hdr *hdr,
4097 int elements_needed)
4098 {
4099 struct qeth_qdio_out_buffer *buffer;
4100 int start_index;
4101 int flush_count = 0;
4102 int do_pack = 0;
4103 int tmp;
4104 int rc = 0;
4105
4106 /* spin until we get the queue ... */
4107 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4108 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4109 start_index = queue->next_buf_to_fill;
4110 buffer = queue->bufs[queue->next_buf_to_fill];
4111 /*
4112 * check if buffer is empty to make sure that we do not 'overtake'
4113 * ourselves and try to fill a buffer that is already primed
4114 */
4115 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4116 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4117 return -EBUSY;
4118 }
4119 /* check if we need to switch packing state of this queue */
4120 qeth_switch_to_packing_if_needed(queue);
4121 if (queue->do_pack) {
4122 do_pack = 1;
4123 /* does packet fit in current buffer? */
4124 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4125 buffer->next_element_to_fill) < elements_needed) {
4126 /* ... no -> set state PRIMED */
4127 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4128 flush_count++;
4129 queue->next_buf_to_fill =
4130 (queue->next_buf_to_fill + 1) %
4131 QDIO_MAX_BUFFERS_PER_Q;
4132 buffer = queue->bufs[queue->next_buf_to_fill];
4133 /* we did a step forward, so check buffer state
4134 * again */
4135 if (atomic_read(&buffer->state) !=
4136 QETH_QDIO_BUF_EMPTY) {
4137 qeth_flush_buffers(queue, start_index,
4138 flush_count);
4139 atomic_set(&queue->state,
4140 QETH_OUT_Q_UNLOCKED);
4141 return -EBUSY;
4142 }
4143 }
4144 }
4145 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4146 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4147 QDIO_MAX_BUFFERS_PER_Q;
4148 flush_count += tmp;
4149 if (flush_count)
4150 qeth_flush_buffers(queue, start_index, flush_count);
4151 else if (!atomic_read(&queue->set_pci_flags_count))
4152 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4153 /*
4154 * queue->state will go from LOCKED -> UNLOCKED or from
4155 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4156 * (switch packing state or flush buffer to get another pci flag out).
4157 * In that case we will enter this loop
4158 */
4159 while (atomic_dec_return(&queue->state)) {
4160 flush_count = 0;
4161 start_index = queue->next_buf_to_fill;
4162 /* check if we can go back to non-packing state */
4163 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4164 /*
4165 * check if we need to flush a packing buffer to get a pci
4166 * flag out on the queue
4167 */
4168 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4169 flush_count += qeth_flush_buffers_on_no_pci(queue);
4170 if (flush_count)
4171 qeth_flush_buffers(queue, start_index, flush_count);
4172 }
4173 /* at this point the queue is UNLOCKED again */
4174 if (queue->card->options.performance_stats && do_pack)
4175 queue->card->perf_stats.bufs_sent_pack += flush_count;
4176
4177 return rc;
4178 }
4179 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4180
4181 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4182 struct qeth_reply *reply, unsigned long data)
4183 {
4184 struct qeth_ipa_cmd *cmd;
4185 struct qeth_ipacmd_setadpparms *setparms;
4186
4187 QETH_CARD_TEXT(card, 4, "prmadpcb");
4188
4189 cmd = (struct qeth_ipa_cmd *) data;
4190 setparms = &(cmd->data.setadapterparms);
4191
4192 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4193 if (cmd->hdr.return_code) {
4194 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4195 setparms->data.mode = SET_PROMISC_MODE_OFF;
4196 }
4197 card->info.promisc_mode = setparms->data.mode;
4198 return 0;
4199 }
4200
4201 void qeth_setadp_promisc_mode(struct qeth_card *card)
4202 {
4203 enum qeth_ipa_promisc_modes mode;
4204 struct net_device *dev = card->dev;
4205 struct qeth_cmd_buffer *iob;
4206 struct qeth_ipa_cmd *cmd;
4207
4208 QETH_CARD_TEXT(card, 4, "setprom");
4209
4210 if (((dev->flags & IFF_PROMISC) &&
4211 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4212 (!(dev->flags & IFF_PROMISC) &&
4213 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4214 return;
4215 mode = SET_PROMISC_MODE_OFF;
4216 if (dev->flags & IFF_PROMISC)
4217 mode = SET_PROMISC_MODE_ON;
4218 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4219
4220 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4221 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4222 if (!iob)
4223 return;
4224 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4225 cmd->data.setadapterparms.data.mode = mode;
4226 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4227 }
4228 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4229
4230 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4231 {
4232 struct qeth_card *card;
4233 char dbf_text[15];
4234
4235 card = dev->ml_priv;
4236
4237 QETH_CARD_TEXT(card, 4, "chgmtu");
4238 sprintf(dbf_text, "%8x", new_mtu);
4239 QETH_CARD_TEXT(card, 4, dbf_text);
4240
4241 if (new_mtu < 64)
4242 return -EINVAL;
4243 if (new_mtu > 65535)
4244 return -EINVAL;
4245 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4246 (!qeth_mtu_is_valid(card, new_mtu)))
4247 return -EINVAL;
4248 dev->mtu = new_mtu;
4249 return 0;
4250 }
4251 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4252
4253 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4254 {
4255 struct qeth_card *card;
4256
4257 card = dev->ml_priv;
4258
4259 QETH_CARD_TEXT(card, 5, "getstat");
4260
4261 return &card->stats;
4262 }
4263 EXPORT_SYMBOL_GPL(qeth_get_stats);
4264
4265 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4266 struct qeth_reply *reply, unsigned long data)
4267 {
4268 struct qeth_ipa_cmd *cmd;
4269
4270 QETH_CARD_TEXT(card, 4, "chgmaccb");
4271
4272 cmd = (struct qeth_ipa_cmd *) data;
4273 if (!card->options.layer2 ||
4274 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4275 memcpy(card->dev->dev_addr,
4276 &cmd->data.setadapterparms.data.change_addr.addr,
4277 OSA_ADDR_LEN);
4278 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4279 }
4280 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4281 return 0;
4282 }
4283
4284 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4285 {
4286 int rc;
4287 struct qeth_cmd_buffer *iob;
4288 struct qeth_ipa_cmd *cmd;
4289
4290 QETH_CARD_TEXT(card, 4, "chgmac");
4291
4292 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4293 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4294 sizeof(struct qeth_change_addr));
4295 if (!iob)
4296 return -ENOMEM;
4297 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4298 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4299 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4300 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4301 card->dev->dev_addr, OSA_ADDR_LEN);
4302 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4303 NULL);
4304 return rc;
4305 }
4306 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4307
4308 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4309 struct qeth_reply *reply, unsigned long data)
4310 {
4311 struct qeth_ipa_cmd *cmd;
4312 struct qeth_set_access_ctrl *access_ctrl_req;
4313 int fallback = *(int *)reply->param;
4314
4315 QETH_CARD_TEXT(card, 4, "setaccb");
4316
4317 cmd = (struct qeth_ipa_cmd *) data;
4318 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4319 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4320 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4321 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4322 cmd->data.setadapterparms.hdr.return_code);
4323 if (cmd->data.setadapterparms.hdr.return_code !=
4324 SET_ACCESS_CTRL_RC_SUCCESS)
4325 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4326 card->gdev->dev.kobj.name,
4327 access_ctrl_req->subcmd_code,
4328 cmd->data.setadapterparms.hdr.return_code);
4329 switch (cmd->data.setadapterparms.hdr.return_code) {
4330 case SET_ACCESS_CTRL_RC_SUCCESS:
4331 if (card->options.isolation == ISOLATION_MODE_NONE) {
4332 dev_info(&card->gdev->dev,
4333 "QDIO data connection isolation is deactivated\n");
4334 } else {
4335 dev_info(&card->gdev->dev,
4336 "QDIO data connection isolation is activated\n");
4337 }
4338 break;
4339 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4340 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4341 "deactivated\n", dev_name(&card->gdev->dev));
4342 if (fallback)
4343 card->options.isolation = card->options.prev_isolation;
4344 break;
4345 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4346 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4347 " activated\n", dev_name(&card->gdev->dev));
4348 if (fallback)
4349 card->options.isolation = card->options.prev_isolation;
4350 break;
4351 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4352 dev_err(&card->gdev->dev, "Adapter does not "
4353 "support QDIO data connection isolation\n");
4354 break;
4355 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4356 dev_err(&card->gdev->dev,
4357 "Adapter is dedicated. "
4358 "QDIO data connection isolation not supported\n");
4359 if (fallback)
4360 card->options.isolation = card->options.prev_isolation;
4361 break;
4362 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4363 dev_err(&card->gdev->dev,
4364 "TSO does not permit QDIO data connection isolation\n");
4365 if (fallback)
4366 card->options.isolation = card->options.prev_isolation;
4367 break;
4368 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4369 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4370 "support reflective relay mode\n");
4371 if (fallback)
4372 card->options.isolation = card->options.prev_isolation;
4373 break;
4374 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4375 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4376 "enabled at the adjacent switch port");
4377 if (fallback)
4378 card->options.isolation = card->options.prev_isolation;
4379 break;
4380 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4381 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4382 "at the adjacent switch failed\n");
4383 break;
4384 default:
4385 /* this should never happen */
4386 if (fallback)
4387 card->options.isolation = card->options.prev_isolation;
4388 break;
4389 }
4390 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4391 return 0;
4392 }
4393
4394 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4395 enum qeth_ipa_isolation_modes isolation, int fallback)
4396 {
4397 int rc;
4398 struct qeth_cmd_buffer *iob;
4399 struct qeth_ipa_cmd *cmd;
4400 struct qeth_set_access_ctrl *access_ctrl_req;
4401
4402 QETH_CARD_TEXT(card, 4, "setacctl");
4403
4404 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4405 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4406
4407 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4408 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4409 sizeof(struct qeth_set_access_ctrl));
4410 if (!iob)
4411 return -ENOMEM;
4412 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4413 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4414 access_ctrl_req->subcmd_code = isolation;
4415
4416 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4417 &fallback);
4418 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4419 return rc;
4420 }
4421
4422 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4423 {
4424 int rc = 0;
4425
4426 QETH_CARD_TEXT(card, 4, "setactlo");
4427
4428 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4429 card->info.type == QETH_CARD_TYPE_OSX) &&
4430 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4431 rc = qeth_setadpparms_set_access_ctrl(card,
4432 card->options.isolation, fallback);
4433 if (rc) {
4434 QETH_DBF_MESSAGE(3,
4435 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4436 card->gdev->dev.kobj.name,
4437 rc);
4438 rc = -EOPNOTSUPP;
4439 }
4440 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4441 card->options.isolation = ISOLATION_MODE_NONE;
4442
4443 dev_err(&card->gdev->dev, "Adapter does not "
4444 "support QDIO data connection isolation\n");
4445 rc = -EOPNOTSUPP;
4446 }
4447 return rc;
4448 }
4449 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4450
4451 void qeth_tx_timeout(struct net_device *dev)
4452 {
4453 struct qeth_card *card;
4454
4455 card = dev->ml_priv;
4456 QETH_CARD_TEXT(card, 4, "txtimeo");
4457 card->stats.tx_errors++;
4458 qeth_schedule_recovery(card);
4459 }
4460 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4461
4462 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4463 {
4464 struct qeth_card *card = dev->ml_priv;
4465 int rc = 0;
4466
4467 switch (regnum) {
4468 case MII_BMCR: /* Basic mode control register */
4469 rc = BMCR_FULLDPLX;
4470 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4471 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4472 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4473 rc |= BMCR_SPEED100;
4474 break;
4475 case MII_BMSR: /* Basic mode status register */
4476 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4477 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4478 BMSR_100BASE4;
4479 break;
4480 case MII_PHYSID1: /* PHYS ID 1 */
4481 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4482 dev->dev_addr[2];
4483 rc = (rc >> 5) & 0xFFFF;
4484 break;
4485 case MII_PHYSID2: /* PHYS ID 2 */
4486 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4487 break;
4488 case MII_ADVERTISE: /* Advertisement control reg */
4489 rc = ADVERTISE_ALL;
4490 break;
4491 case MII_LPA: /* Link partner ability reg */
4492 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4493 LPA_100BASE4 | LPA_LPACK;
4494 break;
4495 case MII_EXPANSION: /* Expansion register */
4496 break;
4497 case MII_DCOUNTER: /* disconnect counter */
4498 break;
4499 case MII_FCSCOUNTER: /* false carrier counter */
4500 break;
4501 case MII_NWAYTEST: /* N-way auto-neg test register */
4502 break;
4503 case MII_RERRCOUNTER: /* rx error counter */
4504 rc = card->stats.rx_errors;
4505 break;
4506 case MII_SREVISION: /* silicon revision */
4507 break;
4508 case MII_RESV1: /* reserved 1 */
4509 break;
4510 case MII_LBRERROR: /* loopback, rx, bypass error */
4511 break;
4512 case MII_PHYADDR: /* physical address */
4513 break;
4514 case MII_RESV2: /* reserved 2 */
4515 break;
4516 case MII_TPISTATUS: /* TPI status for 10mbps */
4517 break;
4518 case MII_NCONFIG: /* network interface config */
4519 break;
4520 default:
4521 break;
4522 }
4523 return rc;
4524 }
4525 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4526
4527 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4528 struct qeth_cmd_buffer *iob, int len,
4529 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4530 unsigned long),
4531 void *reply_param)
4532 {
4533 u16 s1, s2;
4534
4535 QETH_CARD_TEXT(card, 4, "sendsnmp");
4536
4537 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4538 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4539 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4540 /* adjust PDU length fields in IPA_PDU_HEADER */
4541 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4542 s2 = (u32) len;
4543 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4544 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4545 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4546 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4547 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4548 reply_cb, reply_param);
4549 }
4550
4551 static int qeth_snmp_command_cb(struct qeth_card *card,
4552 struct qeth_reply *reply, unsigned long sdata)
4553 {
4554 struct qeth_ipa_cmd *cmd;
4555 struct qeth_arp_query_info *qinfo;
4556 struct qeth_snmp_cmd *snmp;
4557 unsigned char *data;
4558 __u16 data_len;
4559
4560 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4561
4562 cmd = (struct qeth_ipa_cmd *) sdata;
4563 data = (unsigned char *)((char *)cmd - reply->offset);
4564 qinfo = (struct qeth_arp_query_info *) reply->param;
4565 snmp = &cmd->data.setadapterparms.data.snmp;
4566
4567 if (cmd->hdr.return_code) {
4568 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4569 return 0;
4570 }
4571 if (cmd->data.setadapterparms.hdr.return_code) {
4572 cmd->hdr.return_code =
4573 cmd->data.setadapterparms.hdr.return_code;
4574 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4575 return 0;
4576 }
4577 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4578 if (cmd->data.setadapterparms.hdr.seq_no == 1)
4579 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4580 else
4581 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4582
4583 /* check if there is enough room in userspace */
4584 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4585 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4586 cmd->hdr.return_code = IPA_RC_ENOMEM;
4587 return 0;
4588 }
4589 QETH_CARD_TEXT_(card, 4, "snore%i",
4590 cmd->data.setadapterparms.hdr.used_total);
4591 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4592 cmd->data.setadapterparms.hdr.seq_no);
4593 /*copy entries to user buffer*/
4594 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4595 memcpy(qinfo->udata + qinfo->udata_offset,
4596 (char *)snmp,
4597 data_len + offsetof(struct qeth_snmp_cmd, data));
4598 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4599 } else {
4600 memcpy(qinfo->udata + qinfo->udata_offset,
4601 (char *)&snmp->request, data_len);
4602 }
4603 qinfo->udata_offset += data_len;
4604 /* check if all replies received ... */
4605 QETH_CARD_TEXT_(card, 4, "srtot%i",
4606 cmd->data.setadapterparms.hdr.used_total);
4607 QETH_CARD_TEXT_(card, 4, "srseq%i",
4608 cmd->data.setadapterparms.hdr.seq_no);
4609 if (cmd->data.setadapterparms.hdr.seq_no <
4610 cmd->data.setadapterparms.hdr.used_total)
4611 return 1;
4612 return 0;
4613 }
4614
4615 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4616 {
4617 struct qeth_cmd_buffer *iob;
4618 struct qeth_ipa_cmd *cmd;
4619 struct qeth_snmp_ureq *ureq;
4620 unsigned int req_len;
4621 struct qeth_arp_query_info qinfo = {0, };
4622 int rc = 0;
4623
4624 QETH_CARD_TEXT(card, 3, "snmpcmd");
4625
4626 if (card->info.guestlan)
4627 return -EOPNOTSUPP;
4628
4629 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4630 (!card->options.layer2)) {
4631 return -EOPNOTSUPP;
4632 }
4633 /* skip 4 bytes (data_len struct member) to get req_len */
4634 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4635 return -EFAULT;
4636 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4637 sizeof(struct qeth_ipacmd_hdr) -
4638 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4639 return -EINVAL;
4640 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4641 if (IS_ERR(ureq)) {
4642 QETH_CARD_TEXT(card, 2, "snmpnome");
4643 return PTR_ERR(ureq);
4644 }
4645 qinfo.udata_len = ureq->hdr.data_len;
4646 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4647 if (!qinfo.udata) {
4648 kfree(ureq);
4649 return -ENOMEM;
4650 }
4651 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4652
4653 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4654 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4655 if (!iob) {
4656 rc = -ENOMEM;
4657 goto out;
4658 }
4659 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4660 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4661 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4662 qeth_snmp_command_cb, (void *)&qinfo);
4663 if (rc)
4664 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4665 QETH_CARD_IFNAME(card), rc);
4666 else {
4667 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4668 rc = -EFAULT;
4669 }
4670 out:
4671 kfree(ureq);
4672 kfree(qinfo.udata);
4673 return rc;
4674 }
4675 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4676
4677 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4678 struct qeth_reply *reply, unsigned long data)
4679 {
4680 struct qeth_ipa_cmd *cmd;
4681 struct qeth_qoat_priv *priv;
4682 char *resdata;
4683 int resdatalen;
4684
4685 QETH_CARD_TEXT(card, 3, "qoatcb");
4686
4687 cmd = (struct qeth_ipa_cmd *)data;
4688 priv = (struct qeth_qoat_priv *)reply->param;
4689 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4690 resdata = (char *)data + 28;
4691
4692 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4693 cmd->hdr.return_code = IPA_RC_FFFF;
4694 return 0;
4695 }
4696
4697 memcpy((priv->buffer + priv->response_len), resdata,
4698 resdatalen);
4699 priv->response_len += resdatalen;
4700
4701 if (cmd->data.setadapterparms.hdr.seq_no <
4702 cmd->data.setadapterparms.hdr.used_total)
4703 return 1;
4704 return 0;
4705 }
4706
4707 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4708 {
4709 int rc = 0;
4710 struct qeth_cmd_buffer *iob;
4711 struct qeth_ipa_cmd *cmd;
4712 struct qeth_query_oat *oat_req;
4713 struct qeth_query_oat_data oat_data;
4714 struct qeth_qoat_priv priv;
4715 void __user *tmp;
4716
4717 QETH_CARD_TEXT(card, 3, "qoatcmd");
4718
4719 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4720 rc = -EOPNOTSUPP;
4721 goto out;
4722 }
4723
4724 if (copy_from_user(&oat_data, udata,
4725 sizeof(struct qeth_query_oat_data))) {
4726 rc = -EFAULT;
4727 goto out;
4728 }
4729
4730 priv.buffer_len = oat_data.buffer_len;
4731 priv.response_len = 0;
4732 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL);
4733 if (!priv.buffer) {
4734 rc = -ENOMEM;
4735 goto out;
4736 }
4737
4738 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4739 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4740 sizeof(struct qeth_query_oat));
4741 if (!iob) {
4742 rc = -ENOMEM;
4743 goto out_free;
4744 }
4745 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4746 oat_req = &cmd->data.setadapterparms.data.query_oat;
4747 oat_req->subcmd_code = oat_data.command;
4748
4749 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4750 &priv);
4751 if (!rc) {
4752 if (is_compat_task())
4753 tmp = compat_ptr(oat_data.ptr);
4754 else
4755 tmp = (void __user *)(unsigned long)oat_data.ptr;
4756
4757 if (copy_to_user(tmp, priv.buffer,
4758 priv.response_len)) {
4759 rc = -EFAULT;
4760 goto out_free;
4761 }
4762
4763 oat_data.response_len = priv.response_len;
4764
4765 if (copy_to_user(udata, &oat_data,
4766 sizeof(struct qeth_query_oat_data)))
4767 rc = -EFAULT;
4768 } else
4769 if (rc == IPA_RC_FFFF)
4770 rc = -EFAULT;
4771
4772 out_free:
4773 kfree(priv.buffer);
4774 out:
4775 return rc;
4776 }
4777 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4778
4779 static int qeth_query_card_info_cb(struct qeth_card *card,
4780 struct qeth_reply *reply, unsigned long data)
4781 {
4782 struct qeth_ipa_cmd *cmd;
4783 struct qeth_query_card_info *card_info;
4784 struct carrier_info *carrier_info;
4785
4786 QETH_CARD_TEXT(card, 2, "qcrdincb");
4787 carrier_info = (struct carrier_info *)reply->param;
4788 cmd = (struct qeth_ipa_cmd *)data;
4789 card_info = &cmd->data.setadapterparms.data.card_info;
4790 if (cmd->data.setadapterparms.hdr.return_code == 0) {
4791 carrier_info->card_type = card_info->card_type;
4792 carrier_info->port_mode = card_info->port_mode;
4793 carrier_info->port_speed = card_info->port_speed;
4794 }
4795
4796 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4797 return 0;
4798 }
4799
4800 static int qeth_query_card_info(struct qeth_card *card,
4801 struct carrier_info *carrier_info)
4802 {
4803 struct qeth_cmd_buffer *iob;
4804
4805 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4806 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4807 return -EOPNOTSUPP;
4808 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4809 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4810 if (!iob)
4811 return -ENOMEM;
4812 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4813 (void *)carrier_info);
4814 }
4815
4816 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4817 {
4818 switch (card->info.type) {
4819 case QETH_CARD_TYPE_IQD:
4820 return 2;
4821 default:
4822 return 0;
4823 }
4824 }
4825
4826 static void qeth_determine_capabilities(struct qeth_card *card)
4827 {
4828 int rc;
4829 int length;
4830 char *prcd;
4831 struct ccw_device *ddev;
4832 int ddev_offline = 0;
4833
4834 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4835 ddev = CARD_DDEV(card);
4836 if (!ddev->online) {
4837 ddev_offline = 1;
4838 rc = ccw_device_set_online(ddev);
4839 if (rc) {
4840 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4841 goto out;
4842 }
4843 }
4844
4845 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4846 if (rc) {
4847 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4848 dev_name(&card->gdev->dev), rc);
4849 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4850 goto out_offline;
4851 }
4852 qeth_configure_unitaddr(card, prcd);
4853 if (ddev_offline)
4854 qeth_configure_blkt_default(card, prcd);
4855 kfree(prcd);
4856
4857 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4858 if (rc)
4859 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4860
4861 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4862 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4863 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4864 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4865 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4866 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4867 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4868 dev_info(&card->gdev->dev,
4869 "Completion Queueing supported\n");
4870 } else {
4871 card->options.cq = QETH_CQ_NOTAVAILABLE;
4872 }
4873
4874
4875 out_offline:
4876 if (ddev_offline == 1)
4877 ccw_device_set_offline(ddev);
4878 out:
4879 return;
4880 }
4881
4882 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4883 struct qdio_buffer **in_sbal_ptrs,
4884 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4885 int i;
4886
4887 if (card->options.cq == QETH_CQ_ENABLED) {
4888 int offset = QDIO_MAX_BUFFERS_PER_Q *
4889 (card->qdio.no_in_queues - 1);
4890 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4891 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4892 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4893 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4894 }
4895
4896 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4897 }
4898 }
4899
4900 static int qeth_qdio_establish(struct qeth_card *card)
4901 {
4902 struct qdio_initialize init_data;
4903 char *qib_param_field;
4904 struct qdio_buffer **in_sbal_ptrs;
4905 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4906 struct qdio_buffer **out_sbal_ptrs;
4907 int i, j, k;
4908 int rc = 0;
4909
4910 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4911
4912 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4913 GFP_KERNEL);
4914 if (!qib_param_field) {
4915 rc = -ENOMEM;
4916 goto out_free_nothing;
4917 }
4918
4919 qeth_create_qib_param_field(card, qib_param_field);
4920 qeth_create_qib_param_field_blkt(card, qib_param_field);
4921
4922 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4923 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4924 GFP_KERNEL);
4925 if (!in_sbal_ptrs) {
4926 rc = -ENOMEM;
4927 goto out_free_qib_param;
4928 }
4929 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4930 in_sbal_ptrs[i] = (struct qdio_buffer *)
4931 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4932 }
4933
4934 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4935 GFP_KERNEL);
4936 if (!queue_start_poll) {
4937 rc = -ENOMEM;
4938 goto out_free_in_sbals;
4939 }
4940 for (i = 0; i < card->qdio.no_in_queues; ++i)
4941 queue_start_poll[i] = card->discipline->start_poll;
4942
4943 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4944
4945 out_sbal_ptrs =
4946 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4947 sizeof(void *), GFP_KERNEL);
4948 if (!out_sbal_ptrs) {
4949 rc = -ENOMEM;
4950 goto out_free_queue_start_poll;
4951 }
4952 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4953 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4954 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4955 card->qdio.out_qs[i]->bufs[j]->buffer);
4956 }
4957
4958 memset(&init_data, 0, sizeof(struct qdio_initialize));
4959 init_data.cdev = CARD_DDEV(card);
4960 init_data.q_format = qeth_get_qdio_q_format(card);
4961 init_data.qib_param_field_format = 0;
4962 init_data.qib_param_field = qib_param_field;
4963 init_data.no_input_qs = card->qdio.no_in_queues;
4964 init_data.no_output_qs = card->qdio.no_out_queues;
4965 init_data.input_handler = card->discipline->input_handler;
4966 init_data.output_handler = card->discipline->output_handler;
4967 init_data.queue_start_poll_array = queue_start_poll;
4968 init_data.int_parm = (unsigned long) card;
4969 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
4970 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4971 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4972 init_data.scan_threshold =
4973 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4974
4975 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4976 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4977 rc = qdio_allocate(&init_data);
4978 if (rc) {
4979 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4980 goto out;
4981 }
4982 rc = qdio_establish(&init_data);
4983 if (rc) {
4984 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4985 qdio_free(CARD_DDEV(card));
4986 }
4987 }
4988
4989 switch (card->options.cq) {
4990 case QETH_CQ_ENABLED:
4991 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4992 break;
4993 case QETH_CQ_DISABLED:
4994 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4995 break;
4996 default:
4997 break;
4998 }
4999 out:
5000 kfree(out_sbal_ptrs);
5001 out_free_queue_start_poll:
5002 kfree(queue_start_poll);
5003 out_free_in_sbals:
5004 kfree(in_sbal_ptrs);
5005 out_free_qib_param:
5006 kfree(qib_param_field);
5007 out_free_nothing:
5008 return rc;
5009 }
5010
5011 static void qeth_core_free_card(struct qeth_card *card)
5012 {
5013
5014 QETH_DBF_TEXT(SETUP, 2, "freecrd");
5015 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5016 qeth_clean_channel(&card->read);
5017 qeth_clean_channel(&card->write);
5018 if (card->dev)
5019 free_netdev(card->dev);
5020 kfree(card->ip_tbd_list);
5021 qeth_free_qdio_buffers(card);
5022 unregister_service_level(&card->qeth_service_level);
5023 kfree(card);
5024 }
5025
5026 void qeth_trace_features(struct qeth_card *card)
5027 {
5028 QETH_CARD_TEXT(card, 2, "features");
5029 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
5030 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
5031 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
5032 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
5033 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
5034 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
5035 QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
5036 }
5037 EXPORT_SYMBOL_GPL(qeth_trace_features);
5038
5039 static struct ccw_device_id qeth_ids[] = {
5040 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5041 .driver_info = QETH_CARD_TYPE_OSD},
5042 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5043 .driver_info = QETH_CARD_TYPE_IQD},
5044 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5045 .driver_info = QETH_CARD_TYPE_OSN},
5046 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5047 .driver_info = QETH_CARD_TYPE_OSM},
5048 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5049 .driver_info = QETH_CARD_TYPE_OSX},
5050 {},
5051 };
5052 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5053
5054 static struct ccw_driver qeth_ccw_driver = {
5055 .driver = {
5056 .owner = THIS_MODULE,
5057 .name = "qeth",
5058 },
5059 .ids = qeth_ids,
5060 .probe = ccwgroup_probe_ccwdev,
5061 .remove = ccwgroup_remove_ccwdev,
5062 };
5063
5064 int qeth_core_hardsetup_card(struct qeth_card *card)
5065 {
5066 int retries = 3;
5067 int rc;
5068
5069 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5070 atomic_set(&card->force_alloc_skb, 0);
5071 qeth_update_from_chp_desc(card);
5072 retry:
5073 if (retries < 3)
5074 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5075 dev_name(&card->gdev->dev));
5076 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5077 ccw_device_set_offline(CARD_DDEV(card));
5078 ccw_device_set_offline(CARD_WDEV(card));
5079 ccw_device_set_offline(CARD_RDEV(card));
5080 qdio_free(CARD_DDEV(card));
5081 rc = ccw_device_set_online(CARD_RDEV(card));
5082 if (rc)
5083 goto retriable;
5084 rc = ccw_device_set_online(CARD_WDEV(card));
5085 if (rc)
5086 goto retriable;
5087 rc = ccw_device_set_online(CARD_DDEV(card));
5088 if (rc)
5089 goto retriable;
5090 retriable:
5091 if (rc == -ERESTARTSYS) {
5092 QETH_DBF_TEXT(SETUP, 2, "break1");
5093 return rc;
5094 } else if (rc) {
5095 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5096 if (--retries < 0)
5097 goto out;
5098 else
5099 goto retry;
5100 }
5101 qeth_determine_capabilities(card);
5102 qeth_init_tokens(card);
5103 qeth_init_func_level(card);
5104 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5105 if (rc == -ERESTARTSYS) {
5106 QETH_DBF_TEXT(SETUP, 2, "break2");
5107 return rc;
5108 } else if (rc) {
5109 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5110 if (--retries < 0)
5111 goto out;
5112 else
5113 goto retry;
5114 }
5115 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5116 if (rc == -ERESTARTSYS) {
5117 QETH_DBF_TEXT(SETUP, 2, "break3");
5118 return rc;
5119 } else if (rc) {
5120 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5121 if (--retries < 0)
5122 goto out;
5123 else
5124 goto retry;
5125 }
5126 card->read_or_write_problem = 0;
5127 rc = qeth_mpc_initialize(card);
5128 if (rc) {
5129 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5130 goto out;
5131 }
5132
5133 card->options.ipa4.supported_funcs = 0;
5134 card->options.adp.supported_funcs = 0;
5135 card->options.sbp.supported_funcs = 0;
5136 card->info.diagass_support = 0;
5137 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5138 if (rc == -ENOMEM)
5139 goto out;
5140 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5141 rc = qeth_query_setadapterparms(card);
5142 if (rc < 0) {
5143 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5144 goto out;
5145 }
5146 }
5147 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5148 rc = qeth_query_setdiagass(card);
5149 if (rc < 0) {
5150 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5151 goto out;
5152 }
5153 }
5154 return 0;
5155 out:
5156 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5157 "an error on the device\n");
5158 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5159 dev_name(&card->gdev->dev), rc);
5160 return rc;
5161 }
5162 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5163
5164 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5165 struct qdio_buffer_element *element,
5166 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5167 {
5168 struct page *page = virt_to_page(element->addr);
5169 if (*pskb == NULL) {
5170 if (qethbuffer->rx_skb) {
5171 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5172 *pskb = qethbuffer->rx_skb;
5173 qethbuffer->rx_skb = NULL;
5174 } else {
5175 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5176 if (!(*pskb))
5177 return -ENOMEM;
5178 }
5179
5180 skb_reserve(*pskb, ETH_HLEN);
5181 if (data_len <= QETH_RX_PULL_LEN) {
5182 memcpy(skb_put(*pskb, data_len), element->addr + offset,
5183 data_len);
5184 } else {
5185 get_page(page);
5186 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5187 element->addr + offset, QETH_RX_PULL_LEN);
5188 skb_fill_page_desc(*pskb, *pfrag, page,
5189 offset + QETH_RX_PULL_LEN,
5190 data_len - QETH_RX_PULL_LEN);
5191 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5192 (*pskb)->len += data_len - QETH_RX_PULL_LEN;
5193 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5194 (*pfrag)++;
5195 }
5196 } else {
5197 get_page(page);
5198 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5199 (*pskb)->data_len += data_len;
5200 (*pskb)->len += data_len;
5201 (*pskb)->truesize += data_len;
5202 (*pfrag)++;
5203 }
5204
5205
5206 return 0;
5207 }
5208
5209 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5210 {
5211 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5212 }
5213
5214 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5215 struct qeth_qdio_buffer *qethbuffer,
5216 struct qdio_buffer_element **__element, int *__offset,
5217 struct qeth_hdr **hdr)
5218 {
5219 struct qdio_buffer_element *element = *__element;
5220 struct qdio_buffer *buffer = qethbuffer->buffer;
5221 int offset = *__offset;
5222 struct sk_buff *skb = NULL;
5223 int skb_len = 0;
5224 void *data_ptr;
5225 int data_len;
5226 int headroom = 0;
5227 int use_rx_sg = 0;
5228 int frag = 0;
5229
5230 /* qeth_hdr must not cross element boundaries */
5231 if (element->length < offset + sizeof(struct qeth_hdr)) {
5232 if (qeth_is_last_sbale(element))
5233 return NULL;
5234 element++;
5235 offset = 0;
5236 if (element->length < sizeof(struct qeth_hdr))
5237 return NULL;
5238 }
5239 *hdr = element->addr + offset;
5240
5241 offset += sizeof(struct qeth_hdr);
5242 switch ((*hdr)->hdr.l2.id) {
5243 case QETH_HEADER_TYPE_LAYER2:
5244 skb_len = (*hdr)->hdr.l2.pkt_length;
5245 break;
5246 case QETH_HEADER_TYPE_LAYER3:
5247 skb_len = (*hdr)->hdr.l3.length;
5248 headroom = ETH_HLEN;
5249 break;
5250 case QETH_HEADER_TYPE_OSN:
5251 skb_len = (*hdr)->hdr.osn.pdu_length;
5252 headroom = sizeof(struct qeth_hdr);
5253 break;
5254 default:
5255 break;
5256 }
5257
5258 if (!skb_len)
5259 return NULL;
5260
5261 if (((skb_len >= card->options.rx_sg_cb) &&
5262 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5263 (!atomic_read(&card->force_alloc_skb))) ||
5264 (card->options.cq == QETH_CQ_ENABLED)) {
5265 use_rx_sg = 1;
5266 } else {
5267 skb = dev_alloc_skb(skb_len + headroom);
5268 if (!skb)
5269 goto no_mem;
5270 if (headroom)
5271 skb_reserve(skb, headroom);
5272 }
5273
5274 data_ptr = element->addr + offset;
5275 while (skb_len) {
5276 data_len = min(skb_len, (int)(element->length - offset));
5277 if (data_len) {
5278 if (use_rx_sg) {
5279 if (qeth_create_skb_frag(qethbuffer, element,
5280 &skb, offset, &frag, data_len))
5281 goto no_mem;
5282 } else {
5283 memcpy(skb_put(skb, data_len), data_ptr,
5284 data_len);
5285 }
5286 }
5287 skb_len -= data_len;
5288 if (skb_len) {
5289 if (qeth_is_last_sbale(element)) {
5290 QETH_CARD_TEXT(card, 4, "unexeob");
5291 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5292 dev_kfree_skb_any(skb);
5293 card->stats.rx_errors++;
5294 return NULL;
5295 }
5296 element++;
5297 offset = 0;
5298 data_ptr = element->addr;
5299 } else {
5300 offset += data_len;
5301 }
5302 }
5303 *__element = element;
5304 *__offset = offset;
5305 if (use_rx_sg && card->options.performance_stats) {
5306 card->perf_stats.sg_skbs_rx++;
5307 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5308 }
5309 return skb;
5310 no_mem:
5311 if (net_ratelimit()) {
5312 QETH_CARD_TEXT(card, 2, "noskbmem");
5313 }
5314 card->stats.rx_dropped++;
5315 return NULL;
5316 }
5317 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5318
5319 static void qeth_unregister_dbf_views(void)
5320 {
5321 int x;
5322 for (x = 0; x < QETH_DBF_INFOS; x++) {
5323 debug_unregister(qeth_dbf[x].id);
5324 qeth_dbf[x].id = NULL;
5325 }
5326 }
5327
5328 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5329 {
5330 char dbf_txt_buf[32];
5331 va_list args;
5332
5333 if (!debug_level_enabled(id, level))
5334 return;
5335 va_start(args, fmt);
5336 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5337 va_end(args);
5338 debug_text_event(id, level, dbf_txt_buf);
5339 }
5340 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5341
5342 static int qeth_register_dbf_views(void)
5343 {
5344 int ret;
5345 int x;
5346
5347 for (x = 0; x < QETH_DBF_INFOS; x++) {
5348 /* register the areas */
5349 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5350 qeth_dbf[x].pages,
5351 qeth_dbf[x].areas,
5352 qeth_dbf[x].len);
5353 if (qeth_dbf[x].id == NULL) {
5354 qeth_unregister_dbf_views();
5355 return -ENOMEM;
5356 }
5357
5358 /* register a view */
5359 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5360 if (ret) {
5361 qeth_unregister_dbf_views();
5362 return ret;
5363 }
5364
5365 /* set a passing level */
5366 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5367 }
5368
5369 return 0;
5370 }
5371
5372 int qeth_core_load_discipline(struct qeth_card *card,
5373 enum qeth_discipline_id discipline)
5374 {
5375 int rc = 0;
5376 mutex_lock(&qeth_mod_mutex);
5377 switch (discipline) {
5378 case QETH_DISCIPLINE_LAYER3:
5379 card->discipline = try_then_request_module(
5380 symbol_get(qeth_l3_discipline), "qeth_l3");
5381 break;
5382 case QETH_DISCIPLINE_LAYER2:
5383 card->discipline = try_then_request_module(
5384 symbol_get(qeth_l2_discipline), "qeth_l2");
5385 break;
5386 }
5387 if (!card->discipline) {
5388 dev_err(&card->gdev->dev, "There is no kernel module to "
5389 "support discipline %d\n", discipline);
5390 rc = -EINVAL;
5391 }
5392 mutex_unlock(&qeth_mod_mutex);
5393 return rc;
5394 }
5395
5396 void qeth_core_free_discipline(struct qeth_card *card)
5397 {
5398 if (card->options.layer2)
5399 symbol_put(qeth_l2_discipline);
5400 else
5401 symbol_put(qeth_l3_discipline);
5402 card->discipline = NULL;
5403 }
5404
5405 static const struct device_type qeth_generic_devtype = {
5406 .name = "qeth_generic",
5407 .groups = qeth_generic_attr_groups,
5408 };
5409 static const struct device_type qeth_osn_devtype = {
5410 .name = "qeth_osn",
5411 .groups = qeth_osn_attr_groups,
5412 };
5413
5414 #define DBF_NAME_LEN 20
5415
5416 struct qeth_dbf_entry {
5417 char dbf_name[DBF_NAME_LEN];
5418 debug_info_t *dbf_info;
5419 struct list_head dbf_list;
5420 };
5421
5422 static LIST_HEAD(qeth_dbf_list);
5423 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5424
5425 static debug_info_t *qeth_get_dbf_entry(char *name)
5426 {
5427 struct qeth_dbf_entry *entry;
5428 debug_info_t *rc = NULL;
5429
5430 mutex_lock(&qeth_dbf_list_mutex);
5431 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5432 if (strcmp(entry->dbf_name, name) == 0) {
5433 rc = entry->dbf_info;
5434 break;
5435 }
5436 }
5437 mutex_unlock(&qeth_dbf_list_mutex);
5438 return rc;
5439 }
5440
5441 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5442 {
5443 struct qeth_dbf_entry *new_entry;
5444
5445 card->debug = debug_register(name, 2, 1, 8);
5446 if (!card->debug) {
5447 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5448 goto err;
5449 }
5450 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5451 goto err_dbg;
5452 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5453 if (!new_entry)
5454 goto err_dbg;
5455 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5456 new_entry->dbf_info = card->debug;
5457 mutex_lock(&qeth_dbf_list_mutex);
5458 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5459 mutex_unlock(&qeth_dbf_list_mutex);
5460
5461 return 0;
5462
5463 err_dbg:
5464 debug_unregister(card->debug);
5465 err:
5466 return -ENOMEM;
5467 }
5468
5469 static void qeth_clear_dbf_list(void)
5470 {
5471 struct qeth_dbf_entry *entry, *tmp;
5472
5473 mutex_lock(&qeth_dbf_list_mutex);
5474 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5475 list_del(&entry->dbf_list);
5476 debug_unregister(entry->dbf_info);
5477 kfree(entry);
5478 }
5479 mutex_unlock(&qeth_dbf_list_mutex);
5480 }
5481
5482 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5483 {
5484 struct qeth_card *card;
5485 struct device *dev;
5486 int rc;
5487 unsigned long flags;
5488 char dbf_name[DBF_NAME_LEN];
5489
5490 QETH_DBF_TEXT(SETUP, 2, "probedev");
5491
5492 dev = &gdev->dev;
5493 if (!get_device(dev))
5494 return -ENODEV;
5495
5496 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5497
5498 card = qeth_alloc_card();
5499 if (!card) {
5500 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5501 rc = -ENOMEM;
5502 goto err_dev;
5503 }
5504
5505 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5506 dev_name(&gdev->dev));
5507 card->debug = qeth_get_dbf_entry(dbf_name);
5508 if (!card->debug) {
5509 rc = qeth_add_dbf_entry(card, dbf_name);
5510 if (rc)
5511 goto err_card;
5512 }
5513
5514 card->read.ccwdev = gdev->cdev[0];
5515 card->write.ccwdev = gdev->cdev[1];
5516 card->data.ccwdev = gdev->cdev[2];
5517 dev_set_drvdata(&gdev->dev, card);
5518 card->gdev = gdev;
5519 gdev->cdev[0]->handler = qeth_irq;
5520 gdev->cdev[1]->handler = qeth_irq;
5521 gdev->cdev[2]->handler = qeth_irq;
5522
5523 rc = qeth_determine_card_type(card);
5524 if (rc) {
5525 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5526 goto err_card;
5527 }
5528 rc = qeth_setup_card(card);
5529 if (rc) {
5530 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5531 goto err_card;
5532 }
5533
5534 if (card->info.type == QETH_CARD_TYPE_OSN)
5535 gdev->dev.type = &qeth_osn_devtype;
5536 else
5537 gdev->dev.type = &qeth_generic_devtype;
5538
5539 switch (card->info.type) {
5540 case QETH_CARD_TYPE_OSN:
5541 case QETH_CARD_TYPE_OSM:
5542 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5543 if (rc)
5544 goto err_card;
5545 rc = card->discipline->setup(card->gdev);
5546 if (rc)
5547 goto err_disc;
5548 case QETH_CARD_TYPE_OSD:
5549 case QETH_CARD_TYPE_OSX:
5550 default:
5551 break;
5552 }
5553
5554 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5555 list_add_tail(&card->list, &qeth_core_card_list.list);
5556 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5557
5558 qeth_determine_capabilities(card);
5559 return 0;
5560
5561 err_disc:
5562 qeth_core_free_discipline(card);
5563 err_card:
5564 qeth_core_free_card(card);
5565 err_dev:
5566 put_device(dev);
5567 return rc;
5568 }
5569
5570 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5571 {
5572 unsigned long flags;
5573 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5574
5575 QETH_DBF_TEXT(SETUP, 2, "removedv");
5576
5577 if (card->discipline) {
5578 card->discipline->remove(gdev);
5579 qeth_core_free_discipline(card);
5580 }
5581
5582 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5583 list_del(&card->list);
5584 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5585 qeth_core_free_card(card);
5586 dev_set_drvdata(&gdev->dev, NULL);
5587 put_device(&gdev->dev);
5588 return;
5589 }
5590
5591 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5592 {
5593 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5594 int rc = 0;
5595 int def_discipline;
5596
5597 if (!card->discipline) {
5598 if (card->info.type == QETH_CARD_TYPE_IQD)
5599 def_discipline = QETH_DISCIPLINE_LAYER3;
5600 else
5601 def_discipline = QETH_DISCIPLINE_LAYER2;
5602 rc = qeth_core_load_discipline(card, def_discipline);
5603 if (rc)
5604 goto err;
5605 rc = card->discipline->setup(card->gdev);
5606 if (rc)
5607 goto err;
5608 }
5609 rc = card->discipline->set_online(gdev);
5610 err:
5611 return rc;
5612 }
5613
5614 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5615 {
5616 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5617 return card->discipline->set_offline(gdev);
5618 }
5619
5620 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5621 {
5622 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5623 if (card->discipline && card->discipline->shutdown)
5624 card->discipline->shutdown(gdev);
5625 }
5626
5627 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5628 {
5629 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5630 if (card->discipline && card->discipline->prepare)
5631 return card->discipline->prepare(gdev);
5632 return 0;
5633 }
5634
5635 static void qeth_core_complete(struct ccwgroup_device *gdev)
5636 {
5637 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5638 if (card->discipline && card->discipline->complete)
5639 card->discipline->complete(gdev);
5640 }
5641
5642 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5643 {
5644 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5645 if (card->discipline && card->discipline->freeze)
5646 return card->discipline->freeze(gdev);
5647 return 0;
5648 }
5649
5650 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5651 {
5652 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5653 if (card->discipline && card->discipline->thaw)
5654 return card->discipline->thaw(gdev);
5655 return 0;
5656 }
5657
5658 static int qeth_core_restore(struct ccwgroup_device *gdev)
5659 {
5660 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5661 if (card->discipline && card->discipline->restore)
5662 return card->discipline->restore(gdev);
5663 return 0;
5664 }
5665
5666 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5667 .driver = {
5668 .owner = THIS_MODULE,
5669 .name = "qeth",
5670 },
5671 .setup = qeth_core_probe_device,
5672 .remove = qeth_core_remove_device,
5673 .set_online = qeth_core_set_online,
5674 .set_offline = qeth_core_set_offline,
5675 .shutdown = qeth_core_shutdown,
5676 .prepare = qeth_core_prepare,
5677 .complete = qeth_core_complete,
5678 .freeze = qeth_core_freeze,
5679 .thaw = qeth_core_thaw,
5680 .restore = qeth_core_restore,
5681 };
5682
5683 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5684 const char *buf, size_t count)
5685 {
5686 int err;
5687
5688 err = ccwgroup_create_dev(qeth_core_root_dev,
5689 &qeth_core_ccwgroup_driver, 3, buf);
5690
5691 return err ? err : count;
5692 }
5693 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5694
5695 static struct attribute *qeth_drv_attrs[] = {
5696 &driver_attr_group.attr,
5697 NULL,
5698 };
5699 static struct attribute_group qeth_drv_attr_group = {
5700 .attrs = qeth_drv_attrs,
5701 };
5702 static const struct attribute_group *qeth_drv_attr_groups[] = {
5703 &qeth_drv_attr_group,
5704 NULL,
5705 };
5706
5707 static struct {
5708 const char str[ETH_GSTRING_LEN];
5709 } qeth_ethtool_stats_keys[] = {
5710 /* 0 */{"rx skbs"},
5711 {"rx buffers"},
5712 {"tx skbs"},
5713 {"tx buffers"},
5714 {"tx skbs no packing"},
5715 {"tx buffers no packing"},
5716 {"tx skbs packing"},
5717 {"tx buffers packing"},
5718 {"tx sg skbs"},
5719 {"tx sg frags"},
5720 /* 10 */{"rx sg skbs"},
5721 {"rx sg frags"},
5722 {"rx sg page allocs"},
5723 {"tx large kbytes"},
5724 {"tx large count"},
5725 {"tx pk state ch n->p"},
5726 {"tx pk state ch p->n"},
5727 {"tx pk watermark low"},
5728 {"tx pk watermark high"},
5729 {"queue 0 buffer usage"},
5730 /* 20 */{"queue 1 buffer usage"},
5731 {"queue 2 buffer usage"},
5732 {"queue 3 buffer usage"},
5733 {"rx poll time"},
5734 {"rx poll count"},
5735 {"rx do_QDIO time"},
5736 {"rx do_QDIO count"},
5737 {"tx handler time"},
5738 {"tx handler count"},
5739 {"tx time"},
5740 /* 30 */{"tx count"},
5741 {"tx do_QDIO time"},
5742 {"tx do_QDIO count"},
5743 {"tx csum"},
5744 {"tx lin"},
5745 {"cq handler count"},
5746 {"cq handler time"}
5747 };
5748
5749 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5750 {
5751 switch (stringset) {
5752 case ETH_SS_STATS:
5753 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5754 default:
5755 return -EINVAL;
5756 }
5757 }
5758 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5759
5760 void qeth_core_get_ethtool_stats(struct net_device *dev,
5761 struct ethtool_stats *stats, u64 *data)
5762 {
5763 struct qeth_card *card = dev->ml_priv;
5764 data[0] = card->stats.rx_packets -
5765 card->perf_stats.initial_rx_packets;
5766 data[1] = card->perf_stats.bufs_rec;
5767 data[2] = card->stats.tx_packets -
5768 card->perf_stats.initial_tx_packets;
5769 data[3] = card->perf_stats.bufs_sent;
5770 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5771 - card->perf_stats.skbs_sent_pack;
5772 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5773 data[6] = card->perf_stats.skbs_sent_pack;
5774 data[7] = card->perf_stats.bufs_sent_pack;
5775 data[8] = card->perf_stats.sg_skbs_sent;
5776 data[9] = card->perf_stats.sg_frags_sent;
5777 data[10] = card->perf_stats.sg_skbs_rx;
5778 data[11] = card->perf_stats.sg_frags_rx;
5779 data[12] = card->perf_stats.sg_alloc_page_rx;
5780 data[13] = (card->perf_stats.large_send_bytes >> 10);
5781 data[14] = card->perf_stats.large_send_cnt;
5782 data[15] = card->perf_stats.sc_dp_p;
5783 data[16] = card->perf_stats.sc_p_dp;
5784 data[17] = QETH_LOW_WATERMARK_PACK;
5785 data[18] = QETH_HIGH_WATERMARK_PACK;
5786 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5787 data[20] = (card->qdio.no_out_queues > 1) ?
5788 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5789 data[21] = (card->qdio.no_out_queues > 2) ?
5790 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5791 data[22] = (card->qdio.no_out_queues > 3) ?
5792 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5793 data[23] = card->perf_stats.inbound_time;
5794 data[24] = card->perf_stats.inbound_cnt;
5795 data[25] = card->perf_stats.inbound_do_qdio_time;
5796 data[26] = card->perf_stats.inbound_do_qdio_cnt;
5797 data[27] = card->perf_stats.outbound_handler_time;
5798 data[28] = card->perf_stats.outbound_handler_cnt;
5799 data[29] = card->perf_stats.outbound_time;
5800 data[30] = card->perf_stats.outbound_cnt;
5801 data[31] = card->perf_stats.outbound_do_qdio_time;
5802 data[32] = card->perf_stats.outbound_do_qdio_cnt;
5803 data[33] = card->perf_stats.tx_csum;
5804 data[34] = card->perf_stats.tx_lin;
5805 data[35] = card->perf_stats.cq_cnt;
5806 data[36] = card->perf_stats.cq_time;
5807 }
5808 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5809
5810 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5811 {
5812 switch (stringset) {
5813 case ETH_SS_STATS:
5814 memcpy(data, &qeth_ethtool_stats_keys,
5815 sizeof(qeth_ethtool_stats_keys));
5816 break;
5817 default:
5818 WARN_ON(1);
5819 break;
5820 }
5821 }
5822 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5823
5824 void qeth_core_get_drvinfo(struct net_device *dev,
5825 struct ethtool_drvinfo *info)
5826 {
5827 struct qeth_card *card = dev->ml_priv;
5828
5829 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5830 sizeof(info->driver));
5831 strlcpy(info->version, "1.0", sizeof(info->version));
5832 strlcpy(info->fw_version, card->info.mcl_level,
5833 sizeof(info->fw_version));
5834 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5835 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5836 }
5837 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5838
5839 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5840 /* Autoneg and full-duplex are supported and advertized uncondionally. */
5841 /* Always advertize and support all speeds up to specified, and only one */
5842 /* specified port type. */
5843 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5844 int maxspeed, int porttype)
5845 {
5846 int port_sup, port_adv, spd_sup, spd_adv;
5847
5848 switch (porttype) {
5849 case PORT_TP:
5850 port_sup = SUPPORTED_TP;
5851 port_adv = ADVERTISED_TP;
5852 break;
5853 case PORT_FIBRE:
5854 port_sup = SUPPORTED_FIBRE;
5855 port_adv = ADVERTISED_FIBRE;
5856 break;
5857 default:
5858 port_sup = SUPPORTED_TP;
5859 port_adv = ADVERTISED_TP;
5860 WARN_ON_ONCE(1);
5861 }
5862
5863 /* "Fallthrough" case'es ordered from high to low result in setting */
5864 /* flags cumulatively, starting from the specified speed and down to */
5865 /* the lowest possible. */
5866 spd_sup = 0;
5867 spd_adv = 0;
5868 switch (maxspeed) {
5869 case SPEED_10000:
5870 spd_sup |= SUPPORTED_10000baseT_Full;
5871 spd_adv |= ADVERTISED_10000baseT_Full;
5872 case SPEED_1000:
5873 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5874 spd_adv |= ADVERTISED_1000baseT_Half |
5875 ADVERTISED_1000baseT_Full;
5876 case SPEED_100:
5877 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5878 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5879 case SPEED_10:
5880 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5881 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5882 break;
5883 default:
5884 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5885 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5886 WARN_ON_ONCE(1);
5887 }
5888 ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5889 ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5890 }
5891
5892 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5893 struct ethtool_cmd *ecmd)
5894 {
5895 struct qeth_card *card = netdev->ml_priv;
5896 enum qeth_link_types link_type;
5897 struct carrier_info carrier_info;
5898 int rc;
5899 u32 speed;
5900
5901 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5902 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5903 else
5904 link_type = card->info.link_type;
5905
5906 ecmd->transceiver = XCVR_INTERNAL;
5907 ecmd->duplex = DUPLEX_FULL;
5908 ecmd->autoneg = AUTONEG_ENABLE;
5909
5910 switch (link_type) {
5911 case QETH_LINK_TYPE_FAST_ETH:
5912 case QETH_LINK_TYPE_LANE_ETH100:
5913 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
5914 speed = SPEED_100;
5915 ecmd->port = PORT_TP;
5916 break;
5917
5918 case QETH_LINK_TYPE_GBIT_ETH:
5919 case QETH_LINK_TYPE_LANE_ETH1000:
5920 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5921 speed = SPEED_1000;
5922 ecmd->port = PORT_FIBRE;
5923 break;
5924
5925 case QETH_LINK_TYPE_10GBIT_ETH:
5926 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5927 speed = SPEED_10000;
5928 ecmd->port = PORT_FIBRE;
5929 break;
5930
5931 default:
5932 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
5933 speed = SPEED_10;
5934 ecmd->port = PORT_TP;
5935 }
5936 ethtool_cmd_speed_set(ecmd, speed);
5937
5938 /* Check if we can obtain more accurate information. */
5939 /* If QUERY_CARD_INFO command is not supported or fails, */
5940 /* just return the heuristics that was filled above. */
5941 if (!qeth_card_hw_is_reachable(card))
5942 return -ENODEV;
5943 rc = qeth_query_card_info(card, &carrier_info);
5944 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
5945 return 0;
5946 if (rc) /* report error from the hardware operation */
5947 return rc;
5948 /* on success, fill in the information got from the hardware */
5949
5950 netdev_dbg(netdev,
5951 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
5952 carrier_info.card_type,
5953 carrier_info.port_mode,
5954 carrier_info.port_speed);
5955
5956 /* Update attributes for which we've obtained more authoritative */
5957 /* information, leave the rest the way they where filled above. */
5958 switch (carrier_info.card_type) {
5959 case CARD_INFO_TYPE_1G_COPPER_A:
5960 case CARD_INFO_TYPE_1G_COPPER_B:
5961 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
5962 ecmd->port = PORT_TP;
5963 break;
5964 case CARD_INFO_TYPE_1G_FIBRE_A:
5965 case CARD_INFO_TYPE_1G_FIBRE_B:
5966 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
5967 ecmd->port = PORT_FIBRE;
5968 break;
5969 case CARD_INFO_TYPE_10G_FIBRE_A:
5970 case CARD_INFO_TYPE_10G_FIBRE_B:
5971 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
5972 ecmd->port = PORT_FIBRE;
5973 break;
5974 }
5975
5976 switch (carrier_info.port_mode) {
5977 case CARD_INFO_PORTM_FULLDUPLEX:
5978 ecmd->duplex = DUPLEX_FULL;
5979 break;
5980 case CARD_INFO_PORTM_HALFDUPLEX:
5981 ecmd->duplex = DUPLEX_HALF;
5982 break;
5983 }
5984
5985 switch (carrier_info.port_speed) {
5986 case CARD_INFO_PORTS_10M:
5987 speed = SPEED_10;
5988 break;
5989 case CARD_INFO_PORTS_100M:
5990 speed = SPEED_100;
5991 break;
5992 case CARD_INFO_PORTS_1G:
5993 speed = SPEED_1000;
5994 break;
5995 case CARD_INFO_PORTS_10G:
5996 speed = SPEED_10000;
5997 break;
5998 }
5999 ethtool_cmd_speed_set(ecmd, speed);
6000
6001 return 0;
6002 }
6003 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
6004
6005 static int __init qeth_core_init(void)
6006 {
6007 int rc;
6008
6009 pr_info("loading core functions\n");
6010 INIT_LIST_HEAD(&qeth_core_card_list.list);
6011 INIT_LIST_HEAD(&qeth_dbf_list);
6012 rwlock_init(&qeth_core_card_list.rwlock);
6013 mutex_init(&qeth_mod_mutex);
6014
6015 qeth_wq = create_singlethread_workqueue("qeth_wq");
6016
6017 rc = qeth_register_dbf_views();
6018 if (rc)
6019 goto out_err;
6020 qeth_core_root_dev = root_device_register("qeth");
6021 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6022 if (rc)
6023 goto register_err;
6024 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6025 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6026 if (!qeth_core_header_cache) {
6027 rc = -ENOMEM;
6028 goto slab_err;
6029 }
6030 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6031 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6032 if (!qeth_qdio_outbuf_cache) {
6033 rc = -ENOMEM;
6034 goto cqslab_err;
6035 }
6036 rc = ccw_driver_register(&qeth_ccw_driver);
6037 if (rc)
6038 goto ccw_err;
6039 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6040 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6041 if (rc)
6042 goto ccwgroup_err;
6043
6044 return 0;
6045
6046 ccwgroup_err:
6047 ccw_driver_unregister(&qeth_ccw_driver);
6048 ccw_err:
6049 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6050 cqslab_err:
6051 kmem_cache_destroy(qeth_core_header_cache);
6052 slab_err:
6053 root_device_unregister(qeth_core_root_dev);
6054 register_err:
6055 qeth_unregister_dbf_views();
6056 out_err:
6057 pr_err("Initializing the qeth device driver failed\n");
6058 return rc;
6059 }
6060
6061 static void __exit qeth_core_exit(void)
6062 {
6063 qeth_clear_dbf_list();
6064 destroy_workqueue(qeth_wq);
6065 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6066 ccw_driver_unregister(&qeth_ccw_driver);
6067 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6068 kmem_cache_destroy(qeth_core_header_cache);
6069 root_device_unregister(qeth_core_root_dev);
6070 qeth_unregister_dbf_views();
6071 pr_info("core functions removed\n");
6072 }
6073
6074 module_init(qeth_core_init);
6075 module_exit(qeth_core_exit);
6076 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6077 MODULE_DESCRIPTION("qeth core functions");
6078 MODULE_LICENSE("GPL");
Linux with added FPC-III support