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ocfs2: Make the left masklogs compat.
[taoma-kernel.git] / drivers / s390 / net / qeth_core_main.c
blob019ae58ab91352c55d979362854dab4fd2a157a2
1 /*
2 * drivers/s390/net/qeth_core_main.c
3 *
4 * Copyright IBM Corp. 2007, 2009
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11 #define KMSG_COMPONENT "qeth"
12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/ip.h>
20 #include <linux/tcp.h>
21 #include <linux/mii.h>
22 #include <linux/kthread.h>
23 #include <linux/slab.h>
24
25 #include <asm/ebcdic.h>
26 #include <asm/io.h>
27
28 #include "qeth_core.h"
29
30 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
31 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
32 /* N P A M L V H */
33 [QETH_DBF_SETUP] = {"qeth_setup",
34 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
35 [QETH_DBF_MSG] = {"qeth_msg",
36 8, 1, 128, 3, &debug_sprintf_view, NULL},
37 [QETH_DBF_CTRL] = {"qeth_control",
38 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
39 };
40 EXPORT_SYMBOL_GPL(qeth_dbf);
41
42 struct qeth_card_list_struct qeth_core_card_list;
43 EXPORT_SYMBOL_GPL(qeth_core_card_list);
44 struct kmem_cache *qeth_core_header_cache;
45 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
46
47 static struct device *qeth_core_root_dev;
48 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
49 static struct lock_class_key qdio_out_skb_queue_key;
50
51 static void qeth_send_control_data_cb(struct qeth_channel *,
52 struct qeth_cmd_buffer *);
53 static int qeth_issue_next_read(struct qeth_card *);
54 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
55 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
56 static void qeth_free_buffer_pool(struct qeth_card *);
57 static int qeth_qdio_establish(struct qeth_card *);
58
59
60 static inline const char *qeth_get_cardname(struct qeth_card *card)
61 {
62 if (card->info.guestlan) {
63 switch (card->info.type) {
64 case QETH_CARD_TYPE_OSD:
65 return " Guest LAN QDIO";
66 case QETH_CARD_TYPE_IQD:
67 return " Guest LAN Hiper";
68 case QETH_CARD_TYPE_OSM:
69 return " Guest LAN QDIO - OSM";
70 case QETH_CARD_TYPE_OSX:
71 return " Guest LAN QDIO - OSX";
72 default:
73 return " unknown";
74 }
75 } else {
76 switch (card->info.type) {
77 case QETH_CARD_TYPE_OSD:
78 return " OSD Express";
79 case QETH_CARD_TYPE_IQD:
80 return " HiperSockets";
81 case QETH_CARD_TYPE_OSN:
82 return " OSN QDIO";
83 case QETH_CARD_TYPE_OSM:
84 return " OSM QDIO";
85 case QETH_CARD_TYPE_OSX:
86 return " OSX QDIO";
87 default:
88 return " unknown";
89 }
90 }
91 return " n/a";
92 }
93
94 /* max length to be returned: 14 */
95 const char *qeth_get_cardname_short(struct qeth_card *card)
96 {
97 if (card->info.guestlan) {
98 switch (card->info.type) {
99 case QETH_CARD_TYPE_OSD:
100 return "GuestLAN QDIO";
101 case QETH_CARD_TYPE_IQD:
102 return "GuestLAN Hiper";
103 case QETH_CARD_TYPE_OSM:
104 return "GuestLAN OSM";
105 case QETH_CARD_TYPE_OSX:
106 return "GuestLAN OSX";
107 default:
108 return "unknown";
109 }
110 } else {
111 switch (card->info.type) {
112 case QETH_CARD_TYPE_OSD:
113 switch (card->info.link_type) {
114 case QETH_LINK_TYPE_FAST_ETH:
115 return "OSD_100";
116 case QETH_LINK_TYPE_HSTR:
117 return "HSTR";
118 case QETH_LINK_TYPE_GBIT_ETH:
119 return "OSD_1000";
120 case QETH_LINK_TYPE_10GBIT_ETH:
121 return "OSD_10GIG";
122 case QETH_LINK_TYPE_LANE_ETH100:
123 return "OSD_FE_LANE";
124 case QETH_LINK_TYPE_LANE_TR:
125 return "OSD_TR_LANE";
126 case QETH_LINK_TYPE_LANE_ETH1000:
127 return "OSD_GbE_LANE";
128 case QETH_LINK_TYPE_LANE:
129 return "OSD_ATM_LANE";
130 default:
131 return "OSD_Express";
132 }
133 case QETH_CARD_TYPE_IQD:
134 return "HiperSockets";
135 case QETH_CARD_TYPE_OSN:
136 return "OSN";
137 case QETH_CARD_TYPE_OSM:
138 return "OSM_1000";
139 case QETH_CARD_TYPE_OSX:
140 return "OSX_10GIG";
141 default:
142 return "unknown";
143 }
144 }
145 return "n/a";
146 }
147
148 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
149 int clear_start_mask)
150 {
151 unsigned long flags;
152
153 spin_lock_irqsave(&card->thread_mask_lock, flags);
154 card->thread_allowed_mask = threads;
155 if (clear_start_mask)
156 card->thread_start_mask &= threads;
157 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
158 wake_up(&card->wait_q);
159 }
160 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
161
162 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
163 {
164 unsigned long flags;
165 int rc = 0;
166
167 spin_lock_irqsave(&card->thread_mask_lock, flags);
168 rc = (card->thread_running_mask & threads);
169 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
170 return rc;
171 }
172 EXPORT_SYMBOL_GPL(qeth_threads_running);
173
174 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
175 {
176 return wait_event_interruptible(card->wait_q,
177 qeth_threads_running(card, threads) == 0);
178 }
179 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
180
181 void qeth_clear_working_pool_list(struct qeth_card *card)
182 {
183 struct qeth_buffer_pool_entry *pool_entry, *tmp;
184
185 QETH_CARD_TEXT(card, 5, "clwrklst");
186 list_for_each_entry_safe(pool_entry, tmp,
187 &card->qdio.in_buf_pool.entry_list, list){
188 list_del(&pool_entry->list);
189 }
190 }
191 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
192
193 static int qeth_alloc_buffer_pool(struct qeth_card *card)
194 {
195 struct qeth_buffer_pool_entry *pool_entry;
196 void *ptr;
197 int i, j;
198
199 QETH_CARD_TEXT(card, 5, "alocpool");
200 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
201 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
202 if (!pool_entry) {
203 qeth_free_buffer_pool(card);
204 return -ENOMEM;
205 }
206 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
207 ptr = (void *) __get_free_page(GFP_KERNEL);
208 if (!ptr) {
209 while (j > 0)
210 free_page((unsigned long)
211 pool_entry->elements[--j]);
212 kfree(pool_entry);
213 qeth_free_buffer_pool(card);
214 return -ENOMEM;
215 }
216 pool_entry->elements[j] = ptr;
217 }
218 list_add(&pool_entry->init_list,
219 &card->qdio.init_pool.entry_list);
220 }
221 return 0;
222 }
223
224 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
225 {
226 QETH_CARD_TEXT(card, 2, "realcbp");
227
228 if ((card->state != CARD_STATE_DOWN) &&
229 (card->state != CARD_STATE_RECOVER))
230 return -EPERM;
231
232 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
233 qeth_clear_working_pool_list(card);
234 qeth_free_buffer_pool(card);
235 card->qdio.in_buf_pool.buf_count = bufcnt;
236 card->qdio.init_pool.buf_count = bufcnt;
237 return qeth_alloc_buffer_pool(card);
238 }
239 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
240
241 static int qeth_issue_next_read(struct qeth_card *card)
242 {
243 int rc;
244 struct qeth_cmd_buffer *iob;
245
246 QETH_CARD_TEXT(card, 5, "issnxrd");
247 if (card->read.state != CH_STATE_UP)
248 return -EIO;
249 iob = qeth_get_buffer(&card->read);
250 if (!iob) {
251 dev_warn(&card->gdev->dev, "The qeth device driver "
252 "failed to recover an error on the device\n");
253 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
254 "available\n", dev_name(&card->gdev->dev));
255 return -ENOMEM;
256 }
257 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
258 QETH_CARD_TEXT(card, 6, "noirqpnd");
259 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
260 (addr_t) iob, 0, 0);
261 if (rc) {
262 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
263 "rc=%i\n", dev_name(&card->gdev->dev), rc);
264 atomic_set(&card->read.irq_pending, 0);
265 card->read_or_write_problem = 1;
266 qeth_schedule_recovery(card);
267 wake_up(&card->wait_q);
268 }
269 return rc;
270 }
271
272 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
273 {
274 struct qeth_reply *reply;
275
276 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
277 if (reply) {
278 atomic_set(&reply->refcnt, 1);
279 atomic_set(&reply->received, 0);
280 reply->card = card;
281 };
282 return reply;
283 }
284
285 static void qeth_get_reply(struct qeth_reply *reply)
286 {
287 WARN_ON(atomic_read(&reply->refcnt) <= 0);
288 atomic_inc(&reply->refcnt);
289 }
290
291 static void qeth_put_reply(struct qeth_reply *reply)
292 {
293 WARN_ON(atomic_read(&reply->refcnt) <= 0);
294 if (atomic_dec_and_test(&reply->refcnt))
295 kfree(reply);
296 }
297
298 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
299 struct qeth_card *card)
300 {
301 char *ipa_name;
302 int com = cmd->hdr.command;
303 ipa_name = qeth_get_ipa_cmd_name(com);
304 if (rc)
305 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
306 ipa_name, com, QETH_CARD_IFNAME(card),
307 rc, qeth_get_ipa_msg(rc));
308 else
309 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
310 ipa_name, com, QETH_CARD_IFNAME(card));
311 }
312
313 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
314 struct qeth_cmd_buffer *iob)
315 {
316 struct qeth_ipa_cmd *cmd = NULL;
317
318 QETH_CARD_TEXT(card, 5, "chkipad");
319 if (IS_IPA(iob->data)) {
320 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
321 if (IS_IPA_REPLY(cmd)) {
322 if (cmd->hdr.command != IPA_CMD_SETCCID &&
323 cmd->hdr.command != IPA_CMD_DELCCID &&
324 cmd->hdr.command != IPA_CMD_MODCCID &&
325 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
326 qeth_issue_ipa_msg(cmd,
327 cmd->hdr.return_code, card);
328 return cmd;
329 } else {
330 switch (cmd->hdr.command) {
331 case IPA_CMD_STOPLAN:
332 dev_warn(&card->gdev->dev,
333 "The link for interface %s on CHPID"
334 " 0x%X failed\n",
335 QETH_CARD_IFNAME(card),
336 card->info.chpid);
337 card->lan_online = 0;
338 if (card->dev && netif_carrier_ok(card->dev))
339 netif_carrier_off(card->dev);
340 return NULL;
341 case IPA_CMD_STARTLAN:
342 dev_info(&card->gdev->dev,
343 "The link for %s on CHPID 0x%X has"
344 " been restored\n",
345 QETH_CARD_IFNAME(card),
346 card->info.chpid);
347 netif_carrier_on(card->dev);
348 card->lan_online = 1;
349 qeth_schedule_recovery(card);
350 return NULL;
351 case IPA_CMD_MODCCID:
352 return cmd;
353 case IPA_CMD_REGISTER_LOCAL_ADDR:
354 QETH_CARD_TEXT(card, 3, "irla");
355 break;
356 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
357 QETH_CARD_TEXT(card, 3, "urla");
358 break;
359 default:
360 QETH_DBF_MESSAGE(2, "Received data is IPA "
361 "but not a reply!\n");
362 break;
363 }
364 }
365 }
366 return cmd;
367 }
368
369 void qeth_clear_ipacmd_list(struct qeth_card *card)
370 {
371 struct qeth_reply *reply, *r;
372 unsigned long flags;
373
374 QETH_CARD_TEXT(card, 4, "clipalst");
375
376 spin_lock_irqsave(&card->lock, flags);
377 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
378 qeth_get_reply(reply);
379 reply->rc = -EIO;
380 atomic_inc(&reply->received);
381 list_del_init(&reply->list);
382 wake_up(&reply->wait_q);
383 qeth_put_reply(reply);
384 }
385 spin_unlock_irqrestore(&card->lock, flags);
386 atomic_set(&card->write.irq_pending, 0);
387 }
388 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
389
390 static int qeth_check_idx_response(struct qeth_card *card,
391 unsigned char *buffer)
392 {
393 if (!buffer)
394 return 0;
395
396 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
397 if ((buffer[2] & 0xc0) == 0xc0) {
398 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
399 "with cause code 0x%02x%s\n",
400 buffer[4],
401 ((buffer[4] == 0x22) ?
402 " -- try another portname" : ""));
403 QETH_CARD_TEXT(card, 2, "ckidxres");
404 QETH_CARD_TEXT(card, 2, " idxterm");
405 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
406 if (buffer[4] == 0xf6) {
407 dev_err(&card->gdev->dev,
408 "The qeth device is not configured "
409 "for the OSI layer required by z/VM\n");
410 return -EPERM;
411 }
412 return -EIO;
413 }
414 return 0;
415 }
416
417 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
418 __u32 len)
419 {
420 struct qeth_card *card;
421
422 card = CARD_FROM_CDEV(channel->ccwdev);
423 QETH_CARD_TEXT(card, 4, "setupccw");
424 if (channel == &card->read)
425 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
426 else
427 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
428 channel->ccw.count = len;
429 channel->ccw.cda = (__u32) __pa(iob);
430 }
431
432 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
433 {
434 __u8 index;
435
436 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
437 index = channel->io_buf_no;
438 do {
439 if (channel->iob[index].state == BUF_STATE_FREE) {
440 channel->iob[index].state = BUF_STATE_LOCKED;
441 channel->io_buf_no = (channel->io_buf_no + 1) %
442 QETH_CMD_BUFFER_NO;
443 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
444 return channel->iob + index;
445 }
446 index = (index + 1) % QETH_CMD_BUFFER_NO;
447 } while (index != channel->io_buf_no);
448
449 return NULL;
450 }
451
452 void qeth_release_buffer(struct qeth_channel *channel,
453 struct qeth_cmd_buffer *iob)
454 {
455 unsigned long flags;
456
457 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
458 spin_lock_irqsave(&channel->iob_lock, flags);
459 memset(iob->data, 0, QETH_BUFSIZE);
460 iob->state = BUF_STATE_FREE;
461 iob->callback = qeth_send_control_data_cb;
462 iob->rc = 0;
463 spin_unlock_irqrestore(&channel->iob_lock, flags);
464 }
465 EXPORT_SYMBOL_GPL(qeth_release_buffer);
466
467 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
468 {
469 struct qeth_cmd_buffer *buffer = NULL;
470 unsigned long flags;
471
472 spin_lock_irqsave(&channel->iob_lock, flags);
473 buffer = __qeth_get_buffer(channel);
474 spin_unlock_irqrestore(&channel->iob_lock, flags);
475 return buffer;
476 }
477
478 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
479 {
480 struct qeth_cmd_buffer *buffer;
481 wait_event(channel->wait_q,
482 ((buffer = qeth_get_buffer(channel)) != NULL));
483 return buffer;
484 }
485 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
486
487 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
488 {
489 int cnt;
490
491 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
492 qeth_release_buffer(channel, &channel->iob[cnt]);
493 channel->buf_no = 0;
494 channel->io_buf_no = 0;
495 }
496 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
497
498 static void qeth_send_control_data_cb(struct qeth_channel *channel,
499 struct qeth_cmd_buffer *iob)
500 {
501 struct qeth_card *card;
502 struct qeth_reply *reply, *r;
503 struct qeth_ipa_cmd *cmd;
504 unsigned long flags;
505 int keep_reply;
506 int rc = 0;
507
508 card = CARD_FROM_CDEV(channel->ccwdev);
509 QETH_CARD_TEXT(card, 4, "sndctlcb");
510 rc = qeth_check_idx_response(card, iob->data);
511 switch (rc) {
512 case 0:
513 break;
514 case -EIO:
515 qeth_clear_ipacmd_list(card);
516 qeth_schedule_recovery(card);
517 /* fall through */
518 default:
519 goto out;
520 }
521
522 cmd = qeth_check_ipa_data(card, iob);
523 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
524 goto out;
525 /*in case of OSN : check if cmd is set */
526 if (card->info.type == QETH_CARD_TYPE_OSN &&
527 cmd &&
528 cmd->hdr.command != IPA_CMD_STARTLAN &&
529 card->osn_info.assist_cb != NULL) {
530 card->osn_info.assist_cb(card->dev, cmd);
531 goto out;
532 }
533
534 spin_lock_irqsave(&card->lock, flags);
535 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
536 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
537 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
538 qeth_get_reply(reply);
539 list_del_init(&reply->list);
540 spin_unlock_irqrestore(&card->lock, flags);
541 keep_reply = 0;
542 if (reply->callback != NULL) {
543 if (cmd) {
544 reply->offset = (__u16)((char *)cmd -
545 (char *)iob->data);
546 keep_reply = reply->callback(card,
547 reply,
548 (unsigned long)cmd);
549 } else
550 keep_reply = reply->callback(card,
551 reply,
552 (unsigned long)iob);
553 }
554 if (cmd)
555 reply->rc = (u16) cmd->hdr.return_code;
556 else if (iob->rc)
557 reply->rc = iob->rc;
558 if (keep_reply) {
559 spin_lock_irqsave(&card->lock, flags);
560 list_add_tail(&reply->list,
561 &card->cmd_waiter_list);
562 spin_unlock_irqrestore(&card->lock, flags);
563 } else {
564 atomic_inc(&reply->received);
565 wake_up(&reply->wait_q);
566 }
567 qeth_put_reply(reply);
568 goto out;
569 }
570 }
571 spin_unlock_irqrestore(&card->lock, flags);
572 out:
573 memcpy(&card->seqno.pdu_hdr_ack,
574 QETH_PDU_HEADER_SEQ_NO(iob->data),
575 QETH_SEQ_NO_LENGTH);
576 qeth_release_buffer(channel, iob);
577 }
578
579 static int qeth_setup_channel(struct qeth_channel *channel)
580 {
581 int cnt;
582
583 QETH_DBF_TEXT(SETUP, 2, "setupch");
584 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
585 channel->iob[cnt].data =
586 kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
587 if (channel->iob[cnt].data == NULL)
588 break;
589 channel->iob[cnt].state = BUF_STATE_FREE;
590 channel->iob[cnt].channel = channel;
591 channel->iob[cnt].callback = qeth_send_control_data_cb;
592 channel->iob[cnt].rc = 0;
593 }
594 if (cnt < QETH_CMD_BUFFER_NO) {
595 while (cnt-- > 0)
596 kfree(channel->iob[cnt].data);
597 return -ENOMEM;
598 }
599 channel->buf_no = 0;
600 channel->io_buf_no = 0;
601 atomic_set(&channel->irq_pending, 0);
602 spin_lock_init(&channel->iob_lock);
603
604 init_waitqueue_head(&channel->wait_q);
605 return 0;
606 }
607
608 static int qeth_set_thread_start_bit(struct qeth_card *card,
609 unsigned long thread)
610 {
611 unsigned long flags;
612
613 spin_lock_irqsave(&card->thread_mask_lock, flags);
614 if (!(card->thread_allowed_mask & thread) ||
615 (card->thread_start_mask & thread)) {
616 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
617 return -EPERM;
618 }
619 card->thread_start_mask |= thread;
620 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
621 return 0;
622 }
623
624 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
625 {
626 unsigned long flags;
627
628 spin_lock_irqsave(&card->thread_mask_lock, flags);
629 card->thread_start_mask &= ~thread;
630 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
631 wake_up(&card->wait_q);
632 }
633 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
634
635 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
636 {
637 unsigned long flags;
638
639 spin_lock_irqsave(&card->thread_mask_lock, flags);
640 card->thread_running_mask &= ~thread;
641 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
642 wake_up(&card->wait_q);
643 }
644 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
645
646 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
647 {
648 unsigned long flags;
649 int rc = 0;
650
651 spin_lock_irqsave(&card->thread_mask_lock, flags);
652 if (card->thread_start_mask & thread) {
653 if ((card->thread_allowed_mask & thread) &&
654 !(card->thread_running_mask & thread)) {
655 rc = 1;
656 card->thread_start_mask &= ~thread;
657 card->thread_running_mask |= thread;
658 } else
659 rc = -EPERM;
660 }
661 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
662 return rc;
663 }
664
665 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
666 {
667 int rc = 0;
668
669 wait_event(card->wait_q,
670 (rc = __qeth_do_run_thread(card, thread)) >= 0);
671 return rc;
672 }
673 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
674
675 void qeth_schedule_recovery(struct qeth_card *card)
676 {
677 QETH_CARD_TEXT(card, 2, "startrec");
678 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
679 schedule_work(&card->kernel_thread_starter);
680 }
681 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
682
683 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
684 {
685 int dstat, cstat;
686 char *sense;
687 struct qeth_card *card;
688
689 sense = (char *) irb->ecw;
690 cstat = irb->scsw.cmd.cstat;
691 dstat = irb->scsw.cmd.dstat;
692 card = CARD_FROM_CDEV(cdev);
693
694 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
695 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
696 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
697 QETH_CARD_TEXT(card, 2, "CGENCHK");
698 dev_warn(&cdev->dev, "The qeth device driver "
699 "failed to recover an error on the device\n");
700 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
701 dev_name(&cdev->dev), dstat, cstat);
702 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
703 16, 1, irb, 64, 1);
704 return 1;
705 }
706
707 if (dstat & DEV_STAT_UNIT_CHECK) {
708 if (sense[SENSE_RESETTING_EVENT_BYTE] &
709 SENSE_RESETTING_EVENT_FLAG) {
710 QETH_CARD_TEXT(card, 2, "REVIND");
711 return 1;
712 }
713 if (sense[SENSE_COMMAND_REJECT_BYTE] &
714 SENSE_COMMAND_REJECT_FLAG) {
715 QETH_CARD_TEXT(card, 2, "CMDREJi");
716 return 1;
717 }
718 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
719 QETH_CARD_TEXT(card, 2, "AFFE");
720 return 1;
721 }
722 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
723 QETH_CARD_TEXT(card, 2, "ZEROSEN");
724 return 0;
725 }
726 QETH_CARD_TEXT(card, 2, "DGENCHK");
727 return 1;
728 }
729 return 0;
730 }
731
732 static long __qeth_check_irb_error(struct ccw_device *cdev,
733 unsigned long intparm, struct irb *irb)
734 {
735 struct qeth_card *card;
736
737 card = CARD_FROM_CDEV(cdev);
738
739 if (!IS_ERR(irb))
740 return 0;
741
742 switch (PTR_ERR(irb)) {
743 case -EIO:
744 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
745 dev_name(&cdev->dev));
746 QETH_CARD_TEXT(card, 2, "ckirberr");
747 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
748 break;
749 case -ETIMEDOUT:
750 dev_warn(&cdev->dev, "A hardware operation timed out"
751 " on the device\n");
752 QETH_CARD_TEXT(card, 2, "ckirberr");
753 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
754 if (intparm == QETH_RCD_PARM) {
755 if (card && (card->data.ccwdev == cdev)) {
756 card->data.state = CH_STATE_DOWN;
757 wake_up(&card->wait_q);
758 }
759 }
760 break;
761 default:
762 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
763 dev_name(&cdev->dev), PTR_ERR(irb));
764 QETH_CARD_TEXT(card, 2, "ckirberr");
765 QETH_CARD_TEXT(card, 2, " rc???");
766 }
767 return PTR_ERR(irb);
768 }
769
770 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
771 struct irb *irb)
772 {
773 int rc;
774 int cstat, dstat;
775 struct qeth_cmd_buffer *buffer;
776 struct qeth_channel *channel;
777 struct qeth_card *card;
778 struct qeth_cmd_buffer *iob;
779 __u8 index;
780
781 if (__qeth_check_irb_error(cdev, intparm, irb))
782 return;
783 cstat = irb->scsw.cmd.cstat;
784 dstat = irb->scsw.cmd.dstat;
785
786 card = CARD_FROM_CDEV(cdev);
787 if (!card)
788 return;
789
790 QETH_CARD_TEXT(card, 5, "irq");
791
792 if (card->read.ccwdev == cdev) {
793 channel = &card->read;
794 QETH_CARD_TEXT(card, 5, "read");
795 } else if (card->write.ccwdev == cdev) {
796 channel = &card->write;
797 QETH_CARD_TEXT(card, 5, "write");
798 } else {
799 channel = &card->data;
800 QETH_CARD_TEXT(card, 5, "data");
801 }
802 atomic_set(&channel->irq_pending, 0);
803
804 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
805 channel->state = CH_STATE_STOPPED;
806
807 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
808 channel->state = CH_STATE_HALTED;
809
810 /*let's wake up immediately on data channel*/
811 if ((channel == &card->data) && (intparm != 0) &&
812 (intparm != QETH_RCD_PARM))
813 goto out;
814
815 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
816 QETH_CARD_TEXT(card, 6, "clrchpar");
817 /* we don't have to handle this further */
818 intparm = 0;
819 }
820 if (intparm == QETH_HALT_CHANNEL_PARM) {
821 QETH_CARD_TEXT(card, 6, "hltchpar");
822 /* we don't have to handle this further */
823 intparm = 0;
824 }
825 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
826 (dstat & DEV_STAT_UNIT_CHECK) ||
827 (cstat)) {
828 if (irb->esw.esw0.erw.cons) {
829 dev_warn(&channel->ccwdev->dev,
830 "The qeth device driver failed to recover "
831 "an error on the device\n");
832 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
833 "0x%X dstat 0x%X\n",
834 dev_name(&channel->ccwdev->dev), cstat, dstat);
835 print_hex_dump(KERN_WARNING, "qeth: irb ",
836 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
837 print_hex_dump(KERN_WARNING, "qeth: sense data ",
838 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
839 }
840 if (intparm == QETH_RCD_PARM) {
841 channel->state = CH_STATE_DOWN;
842 goto out;
843 }
844 rc = qeth_get_problem(cdev, irb);
845 if (rc) {
846 qeth_clear_ipacmd_list(card);
847 qeth_schedule_recovery(card);
848 goto out;
849 }
850 }
851
852 if (intparm == QETH_RCD_PARM) {
853 channel->state = CH_STATE_RCD_DONE;
854 goto out;
855 }
856 if (intparm) {
857 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
858 buffer->state = BUF_STATE_PROCESSED;
859 }
860 if (channel == &card->data)
861 return;
862 if (channel == &card->read &&
863 channel->state == CH_STATE_UP)
864 qeth_issue_next_read(card);
865
866 iob = channel->iob;
867 index = channel->buf_no;
868 while (iob[index].state == BUF_STATE_PROCESSED) {
869 if (iob[index].callback != NULL)
870 iob[index].callback(channel, iob + index);
871
872 index = (index + 1) % QETH_CMD_BUFFER_NO;
873 }
874 channel->buf_no = index;
875 out:
876 wake_up(&card->wait_q);
877 return;
878 }
879
880 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
881 struct qeth_qdio_out_buffer *buf)
882 {
883 int i;
884 struct sk_buff *skb;
885
886 /* is PCI flag set on buffer? */
887 if (buf->buffer->element[0].flags & 0x40)
888 atomic_dec(&queue->set_pci_flags_count);
889
890 skb = skb_dequeue(&buf->skb_list);
891 while (skb) {
892 atomic_dec(&skb->users);
893 dev_kfree_skb_any(skb);
894 skb = skb_dequeue(&buf->skb_list);
895 }
896 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
897 if (buf->buffer->element[i].addr && buf->is_header[i])
898 kmem_cache_free(qeth_core_header_cache,
899 buf->buffer->element[i].addr);
900 buf->is_header[i] = 0;
901 buf->buffer->element[i].length = 0;
902 buf->buffer->element[i].addr = NULL;
903 buf->buffer->element[i].flags = 0;
904 }
905 buf->buffer->element[15].flags = 0;
906 buf->next_element_to_fill = 0;
907 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
908 }
909
910 void qeth_clear_qdio_buffers(struct qeth_card *card)
911 {
912 int i, j;
913
914 QETH_CARD_TEXT(card, 2, "clearqdbf");
915 /* clear outbound buffers to free skbs */
916 for (i = 0; i < card->qdio.no_out_queues; ++i)
917 if (card->qdio.out_qs[i]) {
918 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
919 qeth_clear_output_buffer(card->qdio.out_qs[i],
920 &card->qdio.out_qs[i]->bufs[j]);
921 }
922 }
923 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
924
925 static void qeth_free_buffer_pool(struct qeth_card *card)
926 {
927 struct qeth_buffer_pool_entry *pool_entry, *tmp;
928 int i = 0;
929 list_for_each_entry_safe(pool_entry, tmp,
930 &card->qdio.init_pool.entry_list, init_list){
931 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
932 free_page((unsigned long)pool_entry->elements[i]);
933 list_del(&pool_entry->init_list);
934 kfree(pool_entry);
935 }
936 }
937
938 static void qeth_free_qdio_buffers(struct qeth_card *card)
939 {
940 int i, j;
941
942 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
943 QETH_QDIO_UNINITIALIZED)
944 return;
945 kfree(card->qdio.in_q);
946 card->qdio.in_q = NULL;
947 /* inbound buffer pool */
948 qeth_free_buffer_pool(card);
949 /* free outbound qdio_qs */
950 if (card->qdio.out_qs) {
951 for (i = 0; i < card->qdio.no_out_queues; ++i) {
952 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
953 qeth_clear_output_buffer(card->qdio.out_qs[i],
954 &card->qdio.out_qs[i]->bufs[j]);
955 kfree(card->qdio.out_qs[i]);
956 }
957 kfree(card->qdio.out_qs);
958 card->qdio.out_qs = NULL;
959 }
960 }
961
962 static void qeth_clean_channel(struct qeth_channel *channel)
963 {
964 int cnt;
965
966 QETH_DBF_TEXT(SETUP, 2, "freech");
967 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
968 kfree(channel->iob[cnt].data);
969 }
970
971 static void qeth_get_channel_path_desc(struct qeth_card *card)
972 {
973 struct ccw_device *ccwdev;
974 struct channelPath_dsc {
975 u8 flags;
976 u8 lsn;
977 u8 desc;
978 u8 chpid;
979 u8 swla;
980 u8 zeroes;
981 u8 chla;
982 u8 chpp;
983 } *chp_dsc;
984
985 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
986
987 ccwdev = card->data.ccwdev;
988 chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
989 if (chp_dsc != NULL) {
990 /* CHPP field bit 6 == 1 -> single queue */
991 if ((chp_dsc->chpp & 0x02) == 0x02) {
992 if ((atomic_read(&card->qdio.state) !=
993 QETH_QDIO_UNINITIALIZED) &&
994 (card->qdio.no_out_queues == 4))
995 /* change from 4 to 1 outbound queues */
996 qeth_free_qdio_buffers(card);
997 card->qdio.no_out_queues = 1;
998 if (card->qdio.default_out_queue != 0)
999 dev_info(&card->gdev->dev,
1000 "Priority Queueing not supported\n");
1001 card->qdio.default_out_queue = 0;
1002 } else {
1003 if ((atomic_read(&card->qdio.state) !=
1004 QETH_QDIO_UNINITIALIZED) &&
1005 (card->qdio.no_out_queues == 1)) {
1006 /* change from 1 to 4 outbound queues */
1007 qeth_free_qdio_buffers(card);
1008 card->qdio.default_out_queue = 2;
1009 }
1010 card->qdio.no_out_queues = 4;
1011 }
1012 card->info.func_level = 0x4100 + chp_dsc->desc;
1013 kfree(chp_dsc);
1014 }
1015 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1016 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1017 return;
1018 }
1019
1020 static void qeth_init_qdio_info(struct qeth_card *card)
1021 {
1022 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1023 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1024 /* inbound */
1025 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1026 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1027 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1028 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1029 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1030 }
1031
1032 static void qeth_set_intial_options(struct qeth_card *card)
1033 {
1034 card->options.route4.type = NO_ROUTER;
1035 card->options.route6.type = NO_ROUTER;
1036 card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1037 card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1038 card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1039 card->options.fake_broadcast = 0;
1040 card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1041 card->options.performance_stats = 0;
1042 card->options.rx_sg_cb = QETH_RX_SG_CB;
1043 card->options.isolation = ISOLATION_MODE_NONE;
1044 }
1045
1046 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1047 {
1048 unsigned long flags;
1049 int rc = 0;
1050
1051 spin_lock_irqsave(&card->thread_mask_lock, flags);
1052 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1053 (u8) card->thread_start_mask,
1054 (u8) card->thread_allowed_mask,
1055 (u8) card->thread_running_mask);
1056 rc = (card->thread_start_mask & thread);
1057 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1058 return rc;
1059 }
1060
1061 static void qeth_start_kernel_thread(struct work_struct *work)
1062 {
1063 struct qeth_card *card = container_of(work, struct qeth_card,
1064 kernel_thread_starter);
1065 QETH_CARD_TEXT(card , 2, "strthrd");
1066
1067 if (card->read.state != CH_STATE_UP &&
1068 card->write.state != CH_STATE_UP)
1069 return;
1070 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1071 kthread_run(card->discipline.recover, (void *) card,
1072 "qeth_recover");
1073 }
1074
1075 static int qeth_setup_card(struct qeth_card *card)
1076 {
1077
1078 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1079 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1080
1081 card->read.state = CH_STATE_DOWN;
1082 card->write.state = CH_STATE_DOWN;
1083 card->data.state = CH_STATE_DOWN;
1084 card->state = CARD_STATE_DOWN;
1085 card->lan_online = 0;
1086 card->use_hard_stop = 0;
1087 card->read_or_write_problem = 0;
1088 card->dev = NULL;
1089 spin_lock_init(&card->vlanlock);
1090 spin_lock_init(&card->mclock);
1091 card->vlangrp = NULL;
1092 spin_lock_init(&card->lock);
1093 spin_lock_init(&card->ip_lock);
1094 spin_lock_init(&card->thread_mask_lock);
1095 mutex_init(&card->conf_mutex);
1096 mutex_init(&card->discipline_mutex);
1097 card->thread_start_mask = 0;
1098 card->thread_allowed_mask = 0;
1099 card->thread_running_mask = 0;
1100 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1101 INIT_LIST_HEAD(&card->ip_list);
1102 INIT_LIST_HEAD(card->ip_tbd_list);
1103 INIT_LIST_HEAD(&card->cmd_waiter_list);
1104 init_waitqueue_head(&card->wait_q);
1105 /* intial options */
1106 qeth_set_intial_options(card);
1107 /* IP address takeover */
1108 INIT_LIST_HEAD(&card->ipato.entries);
1109 card->ipato.enabled = 0;
1110 card->ipato.invert4 = 0;
1111 card->ipato.invert6 = 0;
1112 /* init QDIO stuff */
1113 qeth_init_qdio_info(card);
1114 return 0;
1115 }
1116
1117 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1118 {
1119 struct qeth_card *card = container_of(slr, struct qeth_card,
1120 qeth_service_level);
1121 if (card->info.mcl_level[0])
1122 seq_printf(m, "qeth: %s firmware level %s\n",
1123 CARD_BUS_ID(card), card->info.mcl_level);
1124 }
1125
1126 static struct qeth_card *qeth_alloc_card(void)
1127 {
1128 struct qeth_card *card;
1129
1130 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1131 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1132 if (!card)
1133 goto out;
1134 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1135 card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1136 if (!card->ip_tbd_list) {
1137 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1138 goto out_card;
1139 }
1140 if (qeth_setup_channel(&card->read))
1141 goto out_ip;
1142 if (qeth_setup_channel(&card->write))
1143 goto out_channel;
1144 card->options.layer2 = -1;
1145 card->qeth_service_level.seq_print = qeth_core_sl_print;
1146 register_service_level(&card->qeth_service_level);
1147 return card;
1148
1149 out_channel:
1150 qeth_clean_channel(&card->read);
1151 out_ip:
1152 kfree(card->ip_tbd_list);
1153 out_card:
1154 kfree(card);
1155 out:
1156 return NULL;
1157 }
1158
1159 static int qeth_determine_card_type(struct qeth_card *card)
1160 {
1161 int i = 0;
1162
1163 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1164
1165 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1166 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1167 while (known_devices[i][QETH_DEV_MODEL_IND]) {
1168 if ((CARD_RDEV(card)->id.dev_type ==
1169 known_devices[i][QETH_DEV_TYPE_IND]) &&
1170 (CARD_RDEV(card)->id.dev_model ==
1171 known_devices[i][QETH_DEV_MODEL_IND])) {
1172 card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1173 card->qdio.no_out_queues =
1174 known_devices[i][QETH_QUEUE_NO_IND];
1175 card->info.is_multicast_different =
1176 known_devices[i][QETH_MULTICAST_IND];
1177 qeth_get_channel_path_desc(card);
1178 return 0;
1179 }
1180 i++;
1181 }
1182 card->info.type = QETH_CARD_TYPE_UNKNOWN;
1183 dev_err(&card->gdev->dev, "The adapter hardware is of an "
1184 "unknown type\n");
1185 return -ENOENT;
1186 }
1187
1188 static int qeth_clear_channel(struct qeth_channel *channel)
1189 {
1190 unsigned long flags;
1191 struct qeth_card *card;
1192 int rc;
1193
1194 card = CARD_FROM_CDEV(channel->ccwdev);
1195 QETH_CARD_TEXT(card, 3, "clearch");
1196 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1197 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1198 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1199
1200 if (rc)
1201 return rc;
1202 rc = wait_event_interruptible_timeout(card->wait_q,
1203 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1204 if (rc == -ERESTARTSYS)
1205 return rc;
1206 if (channel->state != CH_STATE_STOPPED)
1207 return -ETIME;
1208 channel->state = CH_STATE_DOWN;
1209 return 0;
1210 }
1211
1212 static int qeth_halt_channel(struct qeth_channel *channel)
1213 {
1214 unsigned long flags;
1215 struct qeth_card *card;
1216 int rc;
1217
1218 card = CARD_FROM_CDEV(channel->ccwdev);
1219 QETH_CARD_TEXT(card, 3, "haltch");
1220 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1221 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1222 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1223
1224 if (rc)
1225 return rc;
1226 rc = wait_event_interruptible_timeout(card->wait_q,
1227 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1228 if (rc == -ERESTARTSYS)
1229 return rc;
1230 if (channel->state != CH_STATE_HALTED)
1231 return -ETIME;
1232 return 0;
1233 }
1234
1235 static int qeth_halt_channels(struct qeth_card *card)
1236 {
1237 int rc1 = 0, rc2 = 0, rc3 = 0;
1238
1239 QETH_CARD_TEXT(card, 3, "haltchs");
1240 rc1 = qeth_halt_channel(&card->read);
1241 rc2 = qeth_halt_channel(&card->write);
1242 rc3 = qeth_halt_channel(&card->data);
1243 if (rc1)
1244 return rc1;
1245 if (rc2)
1246 return rc2;
1247 return rc3;
1248 }
1249
1250 static int qeth_clear_channels(struct qeth_card *card)
1251 {
1252 int rc1 = 0, rc2 = 0, rc3 = 0;
1253
1254 QETH_CARD_TEXT(card, 3, "clearchs");
1255 rc1 = qeth_clear_channel(&card->read);
1256 rc2 = qeth_clear_channel(&card->write);
1257 rc3 = qeth_clear_channel(&card->data);
1258 if (rc1)
1259 return rc1;
1260 if (rc2)
1261 return rc2;
1262 return rc3;
1263 }
1264
1265 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1266 {
1267 int rc = 0;
1268
1269 QETH_CARD_TEXT(card, 3, "clhacrd");
1270
1271 if (halt)
1272 rc = qeth_halt_channels(card);
1273 if (rc)
1274 return rc;
1275 return qeth_clear_channels(card);
1276 }
1277
1278 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1279 {
1280 int rc = 0;
1281
1282 QETH_CARD_TEXT(card, 3, "qdioclr");
1283 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1284 QETH_QDIO_CLEANING)) {
1285 case QETH_QDIO_ESTABLISHED:
1286 if (card->info.type == QETH_CARD_TYPE_IQD)
1287 rc = qdio_shutdown(CARD_DDEV(card),
1288 QDIO_FLAG_CLEANUP_USING_HALT);
1289 else
1290 rc = qdio_shutdown(CARD_DDEV(card),
1291 QDIO_FLAG_CLEANUP_USING_CLEAR);
1292 if (rc)
1293 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1294 qdio_free(CARD_DDEV(card));
1295 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1296 break;
1297 case QETH_QDIO_CLEANING:
1298 return rc;
1299 default:
1300 break;
1301 }
1302 rc = qeth_clear_halt_card(card, use_halt);
1303 if (rc)
1304 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1305 card->state = CARD_STATE_DOWN;
1306 return rc;
1307 }
1308 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1309
1310 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1311 int *length)
1312 {
1313 struct ciw *ciw;
1314 char *rcd_buf;
1315 int ret;
1316 struct qeth_channel *channel = &card->data;
1317 unsigned long flags;
1318
1319 /*
1320 * scan for RCD command in extended SenseID data
1321 */
1322 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1323 if (!ciw || ciw->cmd == 0)
1324 return -EOPNOTSUPP;
1325 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1326 if (!rcd_buf)
1327 return -ENOMEM;
1328
1329 channel->ccw.cmd_code = ciw->cmd;
1330 channel->ccw.cda = (__u32) __pa(rcd_buf);
1331 channel->ccw.count = ciw->count;
1332 channel->ccw.flags = CCW_FLAG_SLI;
1333 channel->state = CH_STATE_RCD;
1334 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1335 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1336 QETH_RCD_PARM, LPM_ANYPATH, 0,
1337 QETH_RCD_TIMEOUT);
1338 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1339 if (!ret)
1340 wait_event(card->wait_q,
1341 (channel->state == CH_STATE_RCD_DONE ||
1342 channel->state == CH_STATE_DOWN));
1343 if (channel->state == CH_STATE_DOWN)
1344 ret = -EIO;
1345 else
1346 channel->state = CH_STATE_DOWN;
1347 if (ret) {
1348 kfree(rcd_buf);
1349 *buffer = NULL;
1350 *length = 0;
1351 } else {
1352 *length = ciw->count;
1353 *buffer = rcd_buf;
1354 }
1355 return ret;
1356 }
1357
1358 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1359 {
1360 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1361 card->info.chpid = prcd[30];
1362 card->info.unit_addr2 = prcd[31];
1363 card->info.cula = prcd[63];
1364 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1365 (prcd[0x11] == _ascebc['M']));
1366 }
1367
1368 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1369 {
1370 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1371
1372 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1373 card->info.blkt.time_total = 250;
1374 card->info.blkt.inter_packet = 5;
1375 card->info.blkt.inter_packet_jumbo = 15;
1376 } else {
1377 card->info.blkt.time_total = 0;
1378 card->info.blkt.inter_packet = 0;
1379 card->info.blkt.inter_packet_jumbo = 0;
1380 }
1381 }
1382
1383 static void qeth_init_tokens(struct qeth_card *card)
1384 {
1385 card->token.issuer_rm_w = 0x00010103UL;
1386 card->token.cm_filter_w = 0x00010108UL;
1387 card->token.cm_connection_w = 0x0001010aUL;
1388 card->token.ulp_filter_w = 0x0001010bUL;
1389 card->token.ulp_connection_w = 0x0001010dUL;
1390 }
1391
1392 static void qeth_init_func_level(struct qeth_card *card)
1393 {
1394 switch (card->info.type) {
1395 case QETH_CARD_TYPE_IQD:
1396 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1397 break;
1398 case QETH_CARD_TYPE_OSD:
1399 case QETH_CARD_TYPE_OSN:
1400 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1401 break;
1402 default:
1403 break;
1404 }
1405 }
1406
1407 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1408 void (*idx_reply_cb)(struct qeth_channel *,
1409 struct qeth_cmd_buffer *))
1410 {
1411 struct qeth_cmd_buffer *iob;
1412 unsigned long flags;
1413 int rc;
1414 struct qeth_card *card;
1415
1416 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1417 card = CARD_FROM_CDEV(channel->ccwdev);
1418 iob = qeth_get_buffer(channel);
1419 iob->callback = idx_reply_cb;
1420 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1421 channel->ccw.count = QETH_BUFSIZE;
1422 channel->ccw.cda = (__u32) __pa(iob->data);
1423
1424 wait_event(card->wait_q,
1425 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1426 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1427 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1428 rc = ccw_device_start(channel->ccwdev,
1429 &channel->ccw, (addr_t) iob, 0, 0);
1430 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1431
1432 if (rc) {
1433 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1434 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1435 atomic_set(&channel->irq_pending, 0);
1436 wake_up(&card->wait_q);
1437 return rc;
1438 }
1439 rc = wait_event_interruptible_timeout(card->wait_q,
1440 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1441 if (rc == -ERESTARTSYS)
1442 return rc;
1443 if (channel->state != CH_STATE_UP) {
1444 rc = -ETIME;
1445 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1446 qeth_clear_cmd_buffers(channel);
1447 } else
1448 rc = 0;
1449 return rc;
1450 }
1451
1452 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1453 void (*idx_reply_cb)(struct qeth_channel *,
1454 struct qeth_cmd_buffer *))
1455 {
1456 struct qeth_card *card;
1457 struct qeth_cmd_buffer *iob;
1458 unsigned long flags;
1459 __u16 temp;
1460 __u8 tmp;
1461 int rc;
1462 struct ccw_dev_id temp_devid;
1463
1464 card = CARD_FROM_CDEV(channel->ccwdev);
1465
1466 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1467
1468 iob = qeth_get_buffer(channel);
1469 iob->callback = idx_reply_cb;
1470 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1471 channel->ccw.count = IDX_ACTIVATE_SIZE;
1472 channel->ccw.cda = (__u32) __pa(iob->data);
1473 if (channel == &card->write) {
1474 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1475 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1476 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1477 card->seqno.trans_hdr++;
1478 } else {
1479 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1480 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1481 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1482 }
1483 tmp = ((__u8)card->info.portno) | 0x80;
1484 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1485 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1486 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1487 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1488 &card->info.func_level, sizeof(__u16));
1489 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1490 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1491 temp = (card->info.cula << 8) + card->info.unit_addr2;
1492 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1493
1494 wait_event(card->wait_q,
1495 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1496 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1497 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1498 rc = ccw_device_start(channel->ccwdev,
1499 &channel->ccw, (addr_t) iob, 0, 0);
1500 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1501
1502 if (rc) {
1503 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1504 rc);
1505 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1506 atomic_set(&channel->irq_pending, 0);
1507 wake_up(&card->wait_q);
1508 return rc;
1509 }
1510 rc = wait_event_interruptible_timeout(card->wait_q,
1511 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1512 if (rc == -ERESTARTSYS)
1513 return rc;
1514 if (channel->state != CH_STATE_ACTIVATING) {
1515 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1516 " failed to recover an error on the device\n");
1517 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1518 dev_name(&channel->ccwdev->dev));
1519 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1520 qeth_clear_cmd_buffers(channel);
1521 return -ETIME;
1522 }
1523 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1524 }
1525
1526 static int qeth_peer_func_level(int level)
1527 {
1528 if ((level & 0xff) == 8)
1529 return (level & 0xff) + 0x400;
1530 if (((level >> 8) & 3) == 1)
1531 return (level & 0xff) + 0x200;
1532 return level;
1533 }
1534
1535 static void qeth_idx_write_cb(struct qeth_channel *channel,
1536 struct qeth_cmd_buffer *iob)
1537 {
1538 struct qeth_card *card;
1539 __u16 temp;
1540
1541 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1542
1543 if (channel->state == CH_STATE_DOWN) {
1544 channel->state = CH_STATE_ACTIVATING;
1545 goto out;
1546 }
1547 card = CARD_FROM_CDEV(channel->ccwdev);
1548
1549 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1550 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1551 dev_err(&card->write.ccwdev->dev,
1552 "The adapter is used exclusively by another "
1553 "host\n");
1554 else
1555 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1556 " negative reply\n",
1557 dev_name(&card->write.ccwdev->dev));
1558 goto out;
1559 }
1560 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1561 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1562 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1563 "function level mismatch (sent: 0x%x, received: "
1564 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1565 card->info.func_level, temp);
1566 goto out;
1567 }
1568 channel->state = CH_STATE_UP;
1569 out:
1570 qeth_release_buffer(channel, iob);
1571 }
1572
1573 static void qeth_idx_read_cb(struct qeth_channel *channel,
1574 struct qeth_cmd_buffer *iob)
1575 {
1576 struct qeth_card *card;
1577 __u16 temp;
1578
1579 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1580 if (channel->state == CH_STATE_DOWN) {
1581 channel->state = CH_STATE_ACTIVATING;
1582 goto out;
1583 }
1584
1585 card = CARD_FROM_CDEV(channel->ccwdev);
1586 if (qeth_check_idx_response(card, iob->data))
1587 goto out;
1588
1589 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1590 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1591 case QETH_IDX_ACT_ERR_EXCL:
1592 dev_err(&card->write.ccwdev->dev,
1593 "The adapter is used exclusively by another "
1594 "host\n");
1595 break;
1596 case QETH_IDX_ACT_ERR_AUTH:
1597 case QETH_IDX_ACT_ERR_AUTH_USER:
1598 dev_err(&card->read.ccwdev->dev,
1599 "Setting the device online failed because of "
1600 "insufficient authorization\n");
1601 break;
1602 default:
1603 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1604 " negative reply\n",
1605 dev_name(&card->read.ccwdev->dev));
1606 }
1607 QETH_CARD_TEXT_(card, 2, "idxread%c",
1608 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1609 goto out;
1610 }
1611
1612 /**
1613 * * temporary fix for microcode bug
1614 * * to revert it,replace OR by AND
1615 * */
1616 if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1617 (card->info.type == QETH_CARD_TYPE_OSD))
1618 card->info.portname_required = 1;
1619
1620 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1621 if (temp != qeth_peer_func_level(card->info.func_level)) {
1622 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1623 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1624 dev_name(&card->read.ccwdev->dev),
1625 card->info.func_level, temp);
1626 goto out;
1627 }
1628 memcpy(&card->token.issuer_rm_r,
1629 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1630 QETH_MPC_TOKEN_LENGTH);
1631 memcpy(&card->info.mcl_level[0],
1632 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1633 channel->state = CH_STATE_UP;
1634 out:
1635 qeth_release_buffer(channel, iob);
1636 }
1637
1638 void qeth_prepare_control_data(struct qeth_card *card, int len,
1639 struct qeth_cmd_buffer *iob)
1640 {
1641 qeth_setup_ccw(&card->write, iob->data, len);
1642 iob->callback = qeth_release_buffer;
1643
1644 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1645 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1646 card->seqno.trans_hdr++;
1647 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1648 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1649 card->seqno.pdu_hdr++;
1650 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1651 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1652 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1653 }
1654 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1655
1656 int qeth_send_control_data(struct qeth_card *card, int len,
1657 struct qeth_cmd_buffer *iob,
1658 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1659 unsigned long),
1660 void *reply_param)
1661 {
1662 int rc;
1663 unsigned long flags;
1664 struct qeth_reply *reply = NULL;
1665 unsigned long timeout, event_timeout;
1666 struct qeth_ipa_cmd *cmd;
1667
1668 QETH_CARD_TEXT(card, 2, "sendctl");
1669
1670 if (card->read_or_write_problem) {
1671 qeth_release_buffer(iob->channel, iob);
1672 return -EIO;
1673 }
1674 reply = qeth_alloc_reply(card);
1675 if (!reply) {
1676 return -ENOMEM;
1677 }
1678 reply->callback = reply_cb;
1679 reply->param = reply_param;
1680 if (card->state == CARD_STATE_DOWN)
1681 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1682 else
1683 reply->seqno = card->seqno.ipa++;
1684 init_waitqueue_head(&reply->wait_q);
1685 spin_lock_irqsave(&card->lock, flags);
1686 list_add_tail(&reply->list, &card->cmd_waiter_list);
1687 spin_unlock_irqrestore(&card->lock, flags);
1688 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1689
1690 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1691 qeth_prepare_control_data(card, len, iob);
1692
1693 if (IS_IPA(iob->data))
1694 event_timeout = QETH_IPA_TIMEOUT;
1695 else
1696 event_timeout = QETH_TIMEOUT;
1697 timeout = jiffies + event_timeout;
1698
1699 QETH_CARD_TEXT(card, 6, "noirqpnd");
1700 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1701 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1702 (addr_t) iob, 0, 0);
1703 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1704 if (rc) {
1705 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1706 "ccw_device_start rc = %i\n",
1707 dev_name(&card->write.ccwdev->dev), rc);
1708 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1709 spin_lock_irqsave(&card->lock, flags);
1710 list_del_init(&reply->list);
1711 qeth_put_reply(reply);
1712 spin_unlock_irqrestore(&card->lock, flags);
1713 qeth_release_buffer(iob->channel, iob);
1714 atomic_set(&card->write.irq_pending, 0);
1715 wake_up(&card->wait_q);
1716 return rc;
1717 }
1718
1719 /* we have only one long running ipassist, since we can ensure
1720 process context of this command we can sleep */
1721 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1722 if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1723 (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1724 if (!wait_event_timeout(reply->wait_q,
1725 atomic_read(&reply->received), event_timeout))
1726 goto time_err;
1727 } else {
1728 while (!atomic_read(&reply->received)) {
1729 if (time_after(jiffies, timeout))
1730 goto time_err;
1731 cpu_relax();
1732 };
1733 }
1734
1735 rc = reply->rc;
1736 qeth_put_reply(reply);
1737 return rc;
1738
1739 time_err:
1740 spin_lock_irqsave(&reply->card->lock, flags);
1741 list_del_init(&reply->list);
1742 spin_unlock_irqrestore(&reply->card->lock, flags);
1743 reply->rc = -ETIME;
1744 atomic_inc(&reply->received);
1745 atomic_set(&card->write.irq_pending, 0);
1746 qeth_release_buffer(iob->channel, iob);
1747 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
1748 wake_up(&reply->wait_q);
1749 rc = reply->rc;
1750 qeth_put_reply(reply);
1751 return rc;
1752 }
1753 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1754
1755 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1756 unsigned long data)
1757 {
1758 struct qeth_cmd_buffer *iob;
1759
1760 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1761
1762 iob = (struct qeth_cmd_buffer *) data;
1763 memcpy(&card->token.cm_filter_r,
1764 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1765 QETH_MPC_TOKEN_LENGTH);
1766 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1767 return 0;
1768 }
1769
1770 static int qeth_cm_enable(struct qeth_card *card)
1771 {
1772 int rc;
1773 struct qeth_cmd_buffer *iob;
1774
1775 QETH_DBF_TEXT(SETUP, 2, "cmenable");
1776
1777 iob = qeth_wait_for_buffer(&card->write);
1778 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1779 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1780 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1781 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1782 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1783
1784 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1785 qeth_cm_enable_cb, NULL);
1786 return rc;
1787 }
1788
1789 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1790 unsigned long data)
1791 {
1792
1793 struct qeth_cmd_buffer *iob;
1794
1795 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1796
1797 iob = (struct qeth_cmd_buffer *) data;
1798 memcpy(&card->token.cm_connection_r,
1799 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1800 QETH_MPC_TOKEN_LENGTH);
1801 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1802 return 0;
1803 }
1804
1805 static int qeth_cm_setup(struct qeth_card *card)
1806 {
1807 int rc;
1808 struct qeth_cmd_buffer *iob;
1809
1810 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1811
1812 iob = qeth_wait_for_buffer(&card->write);
1813 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1814 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1815 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1816 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1817 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1818 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1819 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1820 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1821 qeth_cm_setup_cb, NULL);
1822 return rc;
1823
1824 }
1825
1826 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1827 {
1828 switch (card->info.type) {
1829 case QETH_CARD_TYPE_UNKNOWN:
1830 return 1500;
1831 case QETH_CARD_TYPE_IQD:
1832 return card->info.max_mtu;
1833 case QETH_CARD_TYPE_OSD:
1834 switch (card->info.link_type) {
1835 case QETH_LINK_TYPE_HSTR:
1836 case QETH_LINK_TYPE_LANE_TR:
1837 return 2000;
1838 default:
1839 return 1492;
1840 }
1841 case QETH_CARD_TYPE_OSM:
1842 case QETH_CARD_TYPE_OSX:
1843 return 1492;
1844 default:
1845 return 1500;
1846 }
1847 }
1848
1849 static inline int qeth_get_mtu_outof_framesize(int framesize)
1850 {
1851 switch (framesize) {
1852 case 0x4000:
1853 return 8192;
1854 case 0x6000:
1855 return 16384;
1856 case 0xa000:
1857 return 32768;
1858 case 0xffff:
1859 return 57344;
1860 default:
1861 return 0;
1862 }
1863 }
1864
1865 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1866 {
1867 switch (card->info.type) {
1868 case QETH_CARD_TYPE_OSD:
1869 case QETH_CARD_TYPE_OSM:
1870 case QETH_CARD_TYPE_OSX:
1871 case QETH_CARD_TYPE_IQD:
1872 return ((mtu >= 576) &&
1873 (mtu <= card->info.max_mtu));
1874 case QETH_CARD_TYPE_OSN:
1875 case QETH_CARD_TYPE_UNKNOWN:
1876 default:
1877 return 1;
1878 }
1879 }
1880
1881 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1882 unsigned long data)
1883 {
1884
1885 __u16 mtu, framesize;
1886 __u16 len;
1887 __u8 link_type;
1888 struct qeth_cmd_buffer *iob;
1889
1890 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1891
1892 iob = (struct qeth_cmd_buffer *) data;
1893 memcpy(&card->token.ulp_filter_r,
1894 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1895 QETH_MPC_TOKEN_LENGTH);
1896 if (card->info.type == QETH_CARD_TYPE_IQD) {
1897 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1898 mtu = qeth_get_mtu_outof_framesize(framesize);
1899 if (!mtu) {
1900 iob->rc = -EINVAL;
1901 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1902 return 0;
1903 }
1904 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
1905 /* frame size has changed */
1906 if (card->dev &&
1907 ((card->dev->mtu == card->info.initial_mtu) ||
1908 (card->dev->mtu > mtu)))
1909 card->dev->mtu = mtu;
1910 qeth_free_qdio_buffers(card);
1911 }
1912 card->info.initial_mtu = mtu;
1913 card->info.max_mtu = mtu;
1914 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1915 } else {
1916 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1917 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
1918 iob->data);
1919 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1920 }
1921
1922 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1923 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1924 memcpy(&link_type,
1925 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1926 card->info.link_type = link_type;
1927 } else
1928 card->info.link_type = 0;
1929 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
1930 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1931 return 0;
1932 }
1933
1934 static int qeth_ulp_enable(struct qeth_card *card)
1935 {
1936 int rc;
1937 char prot_type;
1938 struct qeth_cmd_buffer *iob;
1939
1940 /*FIXME: trace view callbacks*/
1941 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1942
1943 iob = qeth_wait_for_buffer(&card->write);
1944 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1945
1946 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1947 (__u8) card->info.portno;
1948 if (card->options.layer2)
1949 if (card->info.type == QETH_CARD_TYPE_OSN)
1950 prot_type = QETH_PROT_OSN2;
1951 else
1952 prot_type = QETH_PROT_LAYER2;
1953 else
1954 prot_type = QETH_PROT_TCPIP;
1955
1956 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1957 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1958 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1959 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1960 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1961 memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1962 card->info.portname, 9);
1963 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1964 qeth_ulp_enable_cb, NULL);
1965 return rc;
1966
1967 }
1968
1969 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1970 unsigned long data)
1971 {
1972 struct qeth_cmd_buffer *iob;
1973 int rc = 0;
1974
1975 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1976
1977 iob = (struct qeth_cmd_buffer *) data;
1978 memcpy(&card->token.ulp_connection_r,
1979 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1980 QETH_MPC_TOKEN_LENGTH);
1981 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1982 3)) {
1983 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
1984 dev_err(&card->gdev->dev, "A connection could not be "
1985 "established because of an OLM limit\n");
1986 iob->rc = -EMLINK;
1987 }
1988 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1989 return rc;
1990 }
1991
1992 static int qeth_ulp_setup(struct qeth_card *card)
1993 {
1994 int rc;
1995 __u16 temp;
1996 struct qeth_cmd_buffer *iob;
1997 struct ccw_dev_id dev_id;
1998
1999 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2000
2001 iob = qeth_wait_for_buffer(&card->write);
2002 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2003
2004 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2005 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2006 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2007 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2008 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2009 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2010
2011 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2012 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2013 temp = (card->info.cula << 8) + card->info.unit_addr2;
2014 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2015 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2016 qeth_ulp_setup_cb, NULL);
2017 return rc;
2018 }
2019
2020 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2021 {
2022 int i, j;
2023
2024 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2025
2026 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2027 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2028 return 0;
2029
2030 card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2031 GFP_KERNEL);
2032 if (!card->qdio.in_q)
2033 goto out_nomem;
2034 QETH_DBF_TEXT(SETUP, 2, "inq");
2035 QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2036 memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2037 /* give inbound qeth_qdio_buffers their qdio_buffers */
2038 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2039 card->qdio.in_q->bufs[i].buffer =
2040 &card->qdio.in_q->qdio_bufs[i];
2041 /* inbound buffer pool */
2042 if (qeth_alloc_buffer_pool(card))
2043 goto out_freeinq;
2044 /* outbound */
2045 card->qdio.out_qs =
2046 kmalloc(card->qdio.no_out_queues *
2047 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2048 if (!card->qdio.out_qs)
2049 goto out_freepool;
2050 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2051 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2052 GFP_KERNEL);
2053 if (!card->qdio.out_qs[i])
2054 goto out_freeoutq;
2055 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2056 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2057 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2058 card->qdio.out_qs[i]->queue_no = i;
2059 /* give outbound qeth_qdio_buffers their qdio_buffers */
2060 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2061 card->qdio.out_qs[i]->bufs[j].buffer =
2062 &card->qdio.out_qs[i]->qdio_bufs[j];
2063 skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2064 skb_list);
2065 lockdep_set_class(
2066 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2067 &qdio_out_skb_queue_key);
2068 INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2069 }
2070 }
2071 return 0;
2072
2073 out_freeoutq:
2074 while (i > 0)
2075 kfree(card->qdio.out_qs[--i]);
2076 kfree(card->qdio.out_qs);
2077 card->qdio.out_qs = NULL;
2078 out_freepool:
2079 qeth_free_buffer_pool(card);
2080 out_freeinq:
2081 kfree(card->qdio.in_q);
2082 card->qdio.in_q = NULL;
2083 out_nomem:
2084 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2085 return -ENOMEM;
2086 }
2087
2088 static void qeth_create_qib_param_field(struct qeth_card *card,
2089 char *param_field)
2090 {
2091
2092 param_field[0] = _ascebc['P'];
2093 param_field[1] = _ascebc['C'];
2094 param_field[2] = _ascebc['I'];
2095 param_field[3] = _ascebc['T'];
2096 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2097 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2098 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2099 }
2100
2101 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2102 char *param_field)
2103 {
2104 param_field[16] = _ascebc['B'];
2105 param_field[17] = _ascebc['L'];
2106 param_field[18] = _ascebc['K'];
2107 param_field[19] = _ascebc['T'];
2108 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2109 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2110 *((unsigned int *) (&param_field[28])) =
2111 card->info.blkt.inter_packet_jumbo;
2112 }
2113
2114 static int qeth_qdio_activate(struct qeth_card *card)
2115 {
2116 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2117 return qdio_activate(CARD_DDEV(card));
2118 }
2119
2120 static int qeth_dm_act(struct qeth_card *card)
2121 {
2122 int rc;
2123 struct qeth_cmd_buffer *iob;
2124
2125 QETH_DBF_TEXT(SETUP, 2, "dmact");
2126
2127 iob = qeth_wait_for_buffer(&card->write);
2128 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2129
2130 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2131 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2132 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2133 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2134 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2135 return rc;
2136 }
2137
2138 static int qeth_mpc_initialize(struct qeth_card *card)
2139 {
2140 int rc;
2141
2142 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2143
2144 rc = qeth_issue_next_read(card);
2145 if (rc) {
2146 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2147 return rc;
2148 }
2149 rc = qeth_cm_enable(card);
2150 if (rc) {
2151 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2152 goto out_qdio;
2153 }
2154 rc = qeth_cm_setup(card);
2155 if (rc) {
2156 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2157 goto out_qdio;
2158 }
2159 rc = qeth_ulp_enable(card);
2160 if (rc) {
2161 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2162 goto out_qdio;
2163 }
2164 rc = qeth_ulp_setup(card);
2165 if (rc) {
2166 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2167 goto out_qdio;
2168 }
2169 rc = qeth_alloc_qdio_buffers(card);
2170 if (rc) {
2171 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2172 goto out_qdio;
2173 }
2174 rc = qeth_qdio_establish(card);
2175 if (rc) {
2176 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2177 qeth_free_qdio_buffers(card);
2178 goto out_qdio;
2179 }
2180 rc = qeth_qdio_activate(card);
2181 if (rc) {
2182 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2183 goto out_qdio;
2184 }
2185 rc = qeth_dm_act(card);
2186 if (rc) {
2187 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2188 goto out_qdio;
2189 }
2190
2191 return 0;
2192 out_qdio:
2193 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2194 return rc;
2195 }
2196
2197 static void qeth_print_status_with_portname(struct qeth_card *card)
2198 {
2199 char dbf_text[15];
2200 int i;
2201
2202 sprintf(dbf_text, "%s", card->info.portname + 1);
2203 for (i = 0; i < 8; i++)
2204 dbf_text[i] =
2205 (char) _ebcasc[(__u8) dbf_text[i]];
2206 dbf_text[8] = 0;
2207 dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2208 "with link type %s (portname: %s)\n",
2209 qeth_get_cardname(card),
2210 (card->info.mcl_level[0]) ? " (level: " : "",
2211 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2212 (card->info.mcl_level[0]) ? ")" : "",
2213 qeth_get_cardname_short(card),
2214 dbf_text);
2215
2216 }
2217
2218 static void qeth_print_status_no_portname(struct qeth_card *card)
2219 {
2220 if (card->info.portname[0])
2221 dev_info(&card->gdev->dev, "Device is a%s "
2222 "card%s%s%s\nwith link type %s "
2223 "(no portname needed by interface).\n",
2224 qeth_get_cardname(card),
2225 (card->info.mcl_level[0]) ? " (level: " : "",
2226 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2227 (card->info.mcl_level[0]) ? ")" : "",
2228 qeth_get_cardname_short(card));
2229 else
2230 dev_info(&card->gdev->dev, "Device is a%s "
2231 "card%s%s%s\nwith link type %s.\n",
2232 qeth_get_cardname(card),
2233 (card->info.mcl_level[0]) ? " (level: " : "",
2234 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2235 (card->info.mcl_level[0]) ? ")" : "",
2236 qeth_get_cardname_short(card));
2237 }
2238
2239 void qeth_print_status_message(struct qeth_card *card)
2240 {
2241 switch (card->info.type) {
2242 case QETH_CARD_TYPE_OSD:
2243 case QETH_CARD_TYPE_OSM:
2244 case QETH_CARD_TYPE_OSX:
2245 /* VM will use a non-zero first character
2246 * to indicate a HiperSockets like reporting
2247 * of the level OSA sets the first character to zero
2248 * */
2249 if (!card->info.mcl_level[0]) {
2250 sprintf(card->info.mcl_level, "%02x%02x",
2251 card->info.mcl_level[2],
2252 card->info.mcl_level[3]);
2253
2254 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2255 break;
2256 }
2257 /* fallthrough */
2258 case QETH_CARD_TYPE_IQD:
2259 if ((card->info.guestlan) ||
2260 (card->info.mcl_level[0] & 0x80)) {
2261 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2262 card->info.mcl_level[0]];
2263 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2264 card->info.mcl_level[1]];
2265 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2266 card->info.mcl_level[2]];
2267 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2268 card->info.mcl_level[3]];
2269 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2270 }
2271 break;
2272 default:
2273 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2274 }
2275 if (card->info.portname_required)
2276 qeth_print_status_with_portname(card);
2277 else
2278 qeth_print_status_no_portname(card);
2279 }
2280 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2281
2282 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2283 {
2284 struct qeth_buffer_pool_entry *entry;
2285
2286 QETH_CARD_TEXT(card, 5, "inwrklst");
2287
2288 list_for_each_entry(entry,
2289 &card->qdio.init_pool.entry_list, init_list) {
2290 qeth_put_buffer_pool_entry(card, entry);
2291 }
2292 }
2293
2294 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2295 struct qeth_card *card)
2296 {
2297 struct list_head *plh;
2298 struct qeth_buffer_pool_entry *entry;
2299 int i, free;
2300 struct page *page;
2301
2302 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2303 return NULL;
2304
2305 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2306 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2307 free = 1;
2308 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2309 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2310 free = 0;
2311 break;
2312 }
2313 }
2314 if (free) {
2315 list_del_init(&entry->list);
2316 return entry;
2317 }
2318 }
2319
2320 /* no free buffer in pool so take first one and swap pages */
2321 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2322 struct qeth_buffer_pool_entry, list);
2323 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2324 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2325 page = alloc_page(GFP_ATOMIC);
2326 if (!page) {
2327 return NULL;
2328 } else {
2329 free_page((unsigned long)entry->elements[i]);
2330 entry->elements[i] = page_address(page);
2331 if (card->options.performance_stats)
2332 card->perf_stats.sg_alloc_page_rx++;
2333 }
2334 }
2335 }
2336 list_del_init(&entry->list);
2337 return entry;
2338 }
2339
2340 static int qeth_init_input_buffer(struct qeth_card *card,
2341 struct qeth_qdio_buffer *buf)
2342 {
2343 struct qeth_buffer_pool_entry *pool_entry;
2344 int i;
2345
2346 pool_entry = qeth_find_free_buffer_pool_entry(card);
2347 if (!pool_entry)
2348 return 1;
2349
2350 /*
2351 * since the buffer is accessed only from the input_tasklet
2352 * there shouldn't be a need to synchronize; also, since we use
2353 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2354 * buffers
2355 */
2356
2357 buf->pool_entry = pool_entry;
2358 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2359 buf->buffer->element[i].length = PAGE_SIZE;
2360 buf->buffer->element[i].addr = pool_entry->elements[i];
2361 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2362 buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2363 else
2364 buf->buffer->element[i].flags = 0;
2365 }
2366 return 0;
2367 }
2368
2369 int qeth_init_qdio_queues(struct qeth_card *card)
2370 {
2371 int i, j;
2372 int rc;
2373
2374 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2375
2376 /* inbound queue */
2377 memset(card->qdio.in_q->qdio_bufs, 0,
2378 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2379 qeth_initialize_working_pool_list(card);
2380 /*give only as many buffers to hardware as we have buffer pool entries*/
2381 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2382 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2383 card->qdio.in_q->next_buf_to_init =
2384 card->qdio.in_buf_pool.buf_count - 1;
2385 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2386 card->qdio.in_buf_pool.buf_count - 1);
2387 if (rc) {
2388 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2389 return rc;
2390 }
2391 /* outbound queue */
2392 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2393 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2394 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2395 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2396 qeth_clear_output_buffer(card->qdio.out_qs[i],
2397 &card->qdio.out_qs[i]->bufs[j]);
2398 }
2399 card->qdio.out_qs[i]->card = card;
2400 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2401 card->qdio.out_qs[i]->do_pack = 0;
2402 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2403 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2404 atomic_set(&card->qdio.out_qs[i]->state,
2405 QETH_OUT_Q_UNLOCKED);
2406 }
2407 return 0;
2408 }
2409 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2410
2411 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2412 {
2413 switch (link_type) {
2414 case QETH_LINK_TYPE_HSTR:
2415 return 2;
2416 default:
2417 return 1;
2418 }
2419 }
2420
2421 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2422 struct qeth_ipa_cmd *cmd, __u8 command,
2423 enum qeth_prot_versions prot)
2424 {
2425 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2426 cmd->hdr.command = command;
2427 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2428 cmd->hdr.seqno = card->seqno.ipa;
2429 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2430 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2431 if (card->options.layer2)
2432 cmd->hdr.prim_version_no = 2;
2433 else
2434 cmd->hdr.prim_version_no = 1;
2435 cmd->hdr.param_count = 1;
2436 cmd->hdr.prot_version = prot;
2437 cmd->hdr.ipa_supported = 0;
2438 cmd->hdr.ipa_enabled = 0;
2439 }
2440
2441 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2442 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2443 {
2444 struct qeth_cmd_buffer *iob;
2445 struct qeth_ipa_cmd *cmd;
2446
2447 iob = qeth_wait_for_buffer(&card->write);
2448 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2449 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2450
2451 return iob;
2452 }
2453 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2454
2455 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2456 char prot_type)
2457 {
2458 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2459 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2460 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2461 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2462 }
2463 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2464
2465 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2466 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2467 unsigned long),
2468 void *reply_param)
2469 {
2470 int rc;
2471 char prot_type;
2472
2473 QETH_CARD_TEXT(card, 4, "sendipa");
2474
2475 if (card->options.layer2)
2476 if (card->info.type == QETH_CARD_TYPE_OSN)
2477 prot_type = QETH_PROT_OSN2;
2478 else
2479 prot_type = QETH_PROT_LAYER2;
2480 else
2481 prot_type = QETH_PROT_TCPIP;
2482 qeth_prepare_ipa_cmd(card, iob, prot_type);
2483 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2484 iob, reply_cb, reply_param);
2485 if (rc == -ETIME) {
2486 qeth_clear_ipacmd_list(card);
2487 qeth_schedule_recovery(card);
2488 }
2489 return rc;
2490 }
2491 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2492
2493 static int qeth_send_startstoplan(struct qeth_card *card,
2494 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2495 {
2496 int rc;
2497 struct qeth_cmd_buffer *iob;
2498
2499 iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2500 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2501
2502 return rc;
2503 }
2504
2505 int qeth_send_startlan(struct qeth_card *card)
2506 {
2507 int rc;
2508
2509 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2510
2511 rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2512 return rc;
2513 }
2514 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2515
2516 int qeth_send_stoplan(struct qeth_card *card)
2517 {
2518 int rc = 0;
2519
2520 /*
2521 * TODO: according to the IPA format document page 14,
2522 * TCP/IP (we!) never issue a STOPLAN
2523 * is this right ?!?
2524 */
2525 QETH_DBF_TEXT(SETUP, 2, "stoplan");
2526
2527 rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2528 return rc;
2529 }
2530 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2531
2532 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2533 struct qeth_reply *reply, unsigned long data)
2534 {
2535 struct qeth_ipa_cmd *cmd;
2536
2537 QETH_CARD_TEXT(card, 4, "defadpcb");
2538
2539 cmd = (struct qeth_ipa_cmd *) data;
2540 if (cmd->hdr.return_code == 0)
2541 cmd->hdr.return_code =
2542 cmd->data.setadapterparms.hdr.return_code;
2543 return 0;
2544 }
2545 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2546
2547 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2548 struct qeth_reply *reply, unsigned long data)
2549 {
2550 struct qeth_ipa_cmd *cmd;
2551
2552 QETH_CARD_TEXT(card, 3, "quyadpcb");
2553
2554 cmd = (struct qeth_ipa_cmd *) data;
2555 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2556 card->info.link_type =
2557 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2558 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2559 }
2560 card->options.adp.supported_funcs =
2561 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2562 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2563 }
2564
2565 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2566 __u32 command, __u32 cmdlen)
2567 {
2568 struct qeth_cmd_buffer *iob;
2569 struct qeth_ipa_cmd *cmd;
2570
2571 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2572 QETH_PROT_IPV4);
2573 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2574 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2575 cmd->data.setadapterparms.hdr.command_code = command;
2576 cmd->data.setadapterparms.hdr.used_total = 1;
2577 cmd->data.setadapterparms.hdr.seq_no = 1;
2578
2579 return iob;
2580 }
2581 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2582
2583 int qeth_query_setadapterparms(struct qeth_card *card)
2584 {
2585 int rc;
2586 struct qeth_cmd_buffer *iob;
2587
2588 QETH_CARD_TEXT(card, 3, "queryadp");
2589 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2590 sizeof(struct qeth_ipacmd_setadpparms));
2591 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2592 return rc;
2593 }
2594 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2595
2596 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
2597 unsigned int qdio_error, const char *dbftext)
2598 {
2599 if (qdio_error) {
2600 QETH_CARD_TEXT(card, 2, dbftext);
2601 QETH_CARD_TEXT_(card, 2, " F15=%02X",
2602 buf->element[15].flags & 0xff);
2603 QETH_CARD_TEXT_(card, 2, " F14=%02X",
2604 buf->element[14].flags & 0xff);
2605 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
2606 if ((buf->element[15].flags & 0xff) == 0x12) {
2607 card->stats.rx_dropped++;
2608 return 0;
2609 } else
2610 return 1;
2611 }
2612 return 0;
2613 }
2614 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2615
2616 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2617 {
2618 struct qeth_qdio_q *queue = card->qdio.in_q;
2619 int count;
2620 int i;
2621 int rc;
2622 int newcount = 0;
2623
2624 count = (index < queue->next_buf_to_init)?
2625 card->qdio.in_buf_pool.buf_count -
2626 (queue->next_buf_to_init - index) :
2627 card->qdio.in_buf_pool.buf_count -
2628 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2629 /* only requeue at a certain threshold to avoid SIGAs */
2630 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2631 for (i = queue->next_buf_to_init;
2632 i < queue->next_buf_to_init + count; ++i) {
2633 if (qeth_init_input_buffer(card,
2634 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2635 break;
2636 } else {
2637 newcount++;
2638 }
2639 }
2640
2641 if (newcount < count) {
2642 /* we are in memory shortage so we switch back to
2643 traditional skb allocation and drop packages */
2644 atomic_set(&card->force_alloc_skb, 3);
2645 count = newcount;
2646 } else {
2647 atomic_add_unless(&card->force_alloc_skb, -1, 0);
2648 }
2649
2650 /*
2651 * according to old code it should be avoided to requeue all
2652 * 128 buffers in order to benefit from PCI avoidance.
2653 * this function keeps at least one buffer (the buffer at
2654 * 'index') un-requeued -> this buffer is the first buffer that
2655 * will be requeued the next time
2656 */
2657 if (card->options.performance_stats) {
2658 card->perf_stats.inbound_do_qdio_cnt++;
2659 card->perf_stats.inbound_do_qdio_start_time =
2660 qeth_get_micros();
2661 }
2662 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2663 queue->next_buf_to_init, count);
2664 if (card->options.performance_stats)
2665 card->perf_stats.inbound_do_qdio_time +=
2666 qeth_get_micros() -
2667 card->perf_stats.inbound_do_qdio_start_time;
2668 if (rc) {
2669 dev_warn(&card->gdev->dev,
2670 "QDIO reported an error, rc=%i\n", rc);
2671 QETH_CARD_TEXT(card, 2, "qinberr");
2672 }
2673 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2674 QDIO_MAX_BUFFERS_PER_Q;
2675 }
2676 }
2677 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2678
2679 static int qeth_handle_send_error(struct qeth_card *card,
2680 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2681 {
2682 int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2683
2684 QETH_CARD_TEXT(card, 6, "hdsnderr");
2685 if (card->info.type == QETH_CARD_TYPE_IQD) {
2686 if (sbalf15 == 0) {
2687 qdio_err = 0;
2688 } else {
2689 qdio_err = 1;
2690 }
2691 }
2692 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
2693
2694 if (!qdio_err)
2695 return QETH_SEND_ERROR_NONE;
2696
2697 if ((sbalf15 >= 15) && (sbalf15 <= 31))
2698 return QETH_SEND_ERROR_RETRY;
2699
2700 QETH_CARD_TEXT(card, 1, "lnkfail");
2701 QETH_CARD_TEXT_(card, 1, "%04x %02x",
2702 (u16)qdio_err, (u8)sbalf15);
2703 return QETH_SEND_ERROR_LINK_FAILURE;
2704 }
2705
2706 /*
2707 * Switched to packing state if the number of used buffers on a queue
2708 * reaches a certain limit.
2709 */
2710 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2711 {
2712 if (!queue->do_pack) {
2713 if (atomic_read(&queue->used_buffers)
2714 >= QETH_HIGH_WATERMARK_PACK){
2715 /* switch non-PACKING -> PACKING */
2716 QETH_CARD_TEXT(queue->card, 6, "np->pack");
2717 if (queue->card->options.performance_stats)
2718 queue->card->perf_stats.sc_dp_p++;
2719 queue->do_pack = 1;
2720 }
2721 }
2722 }
2723
2724 /*
2725 * Switches from packing to non-packing mode. If there is a packing
2726 * buffer on the queue this buffer will be prepared to be flushed.
2727 * In that case 1 is returned to inform the caller. If no buffer
2728 * has to be flushed, zero is returned.
2729 */
2730 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2731 {
2732 struct qeth_qdio_out_buffer *buffer;
2733 int flush_count = 0;
2734
2735 if (queue->do_pack) {
2736 if (atomic_read(&queue->used_buffers)
2737 <= QETH_LOW_WATERMARK_PACK) {
2738 /* switch PACKING -> non-PACKING */
2739 QETH_CARD_TEXT(queue->card, 6, "pack->np");
2740 if (queue->card->options.performance_stats)
2741 queue->card->perf_stats.sc_p_dp++;
2742 queue->do_pack = 0;
2743 /* flush packing buffers */
2744 buffer = &queue->bufs[queue->next_buf_to_fill];
2745 if ((atomic_read(&buffer->state) ==
2746 QETH_QDIO_BUF_EMPTY) &&
2747 (buffer->next_element_to_fill > 0)) {
2748 atomic_set(&buffer->state,
2749 QETH_QDIO_BUF_PRIMED);
2750 flush_count++;
2751 queue->next_buf_to_fill =
2752 (queue->next_buf_to_fill + 1) %
2753 QDIO_MAX_BUFFERS_PER_Q;
2754 }
2755 }
2756 }
2757 return flush_count;
2758 }
2759
2760 /*
2761 * Called to flush a packing buffer if no more pci flags are on the queue.
2762 * Checks if there is a packing buffer and prepares it to be flushed.
2763 * In that case returns 1, otherwise zero.
2764 */
2765 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2766 {
2767 struct qeth_qdio_out_buffer *buffer;
2768
2769 buffer = &queue->bufs[queue->next_buf_to_fill];
2770 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2771 (buffer->next_element_to_fill > 0)) {
2772 /* it's a packing buffer */
2773 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2774 queue->next_buf_to_fill =
2775 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2776 return 1;
2777 }
2778 return 0;
2779 }
2780
2781 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2782 int count)
2783 {
2784 struct qeth_qdio_out_buffer *buf;
2785 int rc;
2786 int i;
2787 unsigned int qdio_flags;
2788
2789 for (i = index; i < index + count; ++i) {
2790 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2791 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2792 SBAL_FLAGS_LAST_ENTRY;
2793
2794 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2795 continue;
2796
2797 if (!queue->do_pack) {
2798 if ((atomic_read(&queue->used_buffers) >=
2799 (QETH_HIGH_WATERMARK_PACK -
2800 QETH_WATERMARK_PACK_FUZZ)) &&
2801 !atomic_read(&queue->set_pci_flags_count)) {
2802 /* it's likely that we'll go to packing
2803 * mode soon */
2804 atomic_inc(&queue->set_pci_flags_count);
2805 buf->buffer->element[0].flags |= 0x40;
2806 }
2807 } else {
2808 if (!atomic_read(&queue->set_pci_flags_count)) {
2809 /*
2810 * there's no outstanding PCI any more, so we
2811 * have to request a PCI to be sure the the PCI
2812 * will wake at some time in the future then we
2813 * can flush packed buffers that might still be
2814 * hanging around, which can happen if no
2815 * further send was requested by the stack
2816 */
2817 atomic_inc(&queue->set_pci_flags_count);
2818 buf->buffer->element[0].flags |= 0x40;
2819 }
2820 }
2821 }
2822
2823 queue->card->dev->trans_start = jiffies;
2824 if (queue->card->options.performance_stats) {
2825 queue->card->perf_stats.outbound_do_qdio_cnt++;
2826 queue->card->perf_stats.outbound_do_qdio_start_time =
2827 qeth_get_micros();
2828 }
2829 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2830 if (atomic_read(&queue->set_pci_flags_count))
2831 qdio_flags |= QDIO_FLAG_PCI_OUT;
2832 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2833 queue->queue_no, index, count);
2834 if (queue->card->options.performance_stats)
2835 queue->card->perf_stats.outbound_do_qdio_time +=
2836 qeth_get_micros() -
2837 queue->card->perf_stats.outbound_do_qdio_start_time;
2838 atomic_add(count, &queue->used_buffers);
2839 if (rc) {
2840 queue->card->stats.tx_errors += count;
2841 /* ignore temporary SIGA errors without busy condition */
2842 if (rc == QDIO_ERROR_SIGA_TARGET)
2843 return;
2844 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
2845 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
2846
2847 /* this must not happen under normal circumstances. if it
2848 * happens something is really wrong -> recover */
2849 qeth_schedule_recovery(queue->card);
2850 return;
2851 }
2852 if (queue->card->options.performance_stats)
2853 queue->card->perf_stats.bufs_sent += count;
2854 }
2855
2856 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2857 {
2858 int index;
2859 int flush_cnt = 0;
2860 int q_was_packing = 0;
2861
2862 /*
2863 * check if weed have to switch to non-packing mode or if
2864 * we have to get a pci flag out on the queue
2865 */
2866 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2867 !atomic_read(&queue->set_pci_flags_count)) {
2868 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2869 QETH_OUT_Q_UNLOCKED) {
2870 /*
2871 * If we get in here, there was no action in
2872 * do_send_packet. So, we check if there is a
2873 * packing buffer to be flushed here.
2874 */
2875 netif_stop_queue(queue->card->dev);
2876 index = queue->next_buf_to_fill;
2877 q_was_packing = queue->do_pack;
2878 /* queue->do_pack may change */
2879 barrier();
2880 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2881 if (!flush_cnt &&
2882 !atomic_read(&queue->set_pci_flags_count))
2883 flush_cnt +=
2884 qeth_flush_buffers_on_no_pci(queue);
2885 if (queue->card->options.performance_stats &&
2886 q_was_packing)
2887 queue->card->perf_stats.bufs_sent_pack +=
2888 flush_cnt;
2889 if (flush_cnt)
2890 qeth_flush_buffers(queue, index, flush_cnt);
2891 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2892 }
2893 }
2894 }
2895
2896 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
2897 unsigned long card_ptr)
2898 {
2899 struct qeth_card *card = (struct qeth_card *)card_ptr;
2900
2901 if (card->dev && (card->dev->flags & IFF_UP))
2902 napi_schedule(&card->napi);
2903 }
2904 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
2905
2906 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
2907 unsigned int queue, int first_element, int count,
2908 unsigned long card_ptr)
2909 {
2910 struct qeth_card *card = (struct qeth_card *)card_ptr;
2911
2912 if (qdio_err)
2913 qeth_schedule_recovery(card);
2914 }
2915 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
2916
2917 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2918 unsigned int qdio_error, int __queue, int first_element,
2919 int count, unsigned long card_ptr)
2920 {
2921 struct qeth_card *card = (struct qeth_card *) card_ptr;
2922 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2923 struct qeth_qdio_out_buffer *buffer;
2924 int i;
2925
2926 QETH_CARD_TEXT(card, 6, "qdouhdl");
2927 if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2928 QETH_CARD_TEXT(card, 2, "achkcond");
2929 netif_stop_queue(card->dev);
2930 qeth_schedule_recovery(card);
2931 return;
2932 }
2933 if (card->options.performance_stats) {
2934 card->perf_stats.outbound_handler_cnt++;
2935 card->perf_stats.outbound_handler_start_time =
2936 qeth_get_micros();
2937 }
2938 for (i = first_element; i < (first_element + count); ++i) {
2939 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2940 qeth_handle_send_error(card, buffer, qdio_error);
2941 qeth_clear_output_buffer(queue, buffer);
2942 }
2943 atomic_sub(count, &queue->used_buffers);
2944 /* check if we need to do something on this outbound queue */
2945 if (card->info.type != QETH_CARD_TYPE_IQD)
2946 qeth_check_outbound_queue(queue);
2947
2948 netif_wake_queue(queue->card->dev);
2949 if (card->options.performance_stats)
2950 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2951 card->perf_stats.outbound_handler_start_time;
2952 }
2953 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2954
2955 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
2956 int ipv, int cast_type)
2957 {
2958 if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
2959 card->info.type == QETH_CARD_TYPE_OSX))
2960 return card->qdio.default_out_queue;
2961 switch (card->qdio.no_out_queues) {
2962 case 4:
2963 if (cast_type && card->info.is_multicast_different)
2964 return card->info.is_multicast_different &
2965 (card->qdio.no_out_queues - 1);
2966 if (card->qdio.do_prio_queueing && (ipv == 4)) {
2967 const u8 tos = ip_hdr(skb)->tos;
2968
2969 if (card->qdio.do_prio_queueing ==
2970 QETH_PRIO_Q_ING_TOS) {
2971 if (tos & IP_TOS_NOTIMPORTANT)
2972 return 3;
2973 if (tos & IP_TOS_HIGHRELIABILITY)
2974 return 2;
2975 if (tos & IP_TOS_HIGHTHROUGHPUT)
2976 return 1;
2977 if (tos & IP_TOS_LOWDELAY)
2978 return 0;
2979 }
2980 if (card->qdio.do_prio_queueing ==
2981 QETH_PRIO_Q_ING_PREC)
2982 return 3 - (tos >> 6);
2983 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
2984 /* TODO: IPv6!!! */
2985 }
2986 return card->qdio.default_out_queue;
2987 case 1: /* fallthrough for single-out-queue 1920-device */
2988 default:
2989 return card->qdio.default_out_queue;
2990 }
2991 }
2992 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
2993
2994 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
2995 struct sk_buff *skb, int elems)
2996 {
2997 int dlen = skb->len - skb->data_len;
2998 int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
2999 PFN_DOWN((unsigned long)skb->data);
3000
3001 elements_needed += skb_shinfo(skb)->nr_frags;
3002 if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3003 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3004 "(Number=%d / Length=%d). Discarded.\n",
3005 (elements_needed+elems), skb->len);
3006 return 0;
3007 }
3008 return elements_needed;
3009 }
3010 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3011
3012 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3013 {
3014 int hroom, inpage, rest;
3015
3016 if (((unsigned long)skb->data & PAGE_MASK) !=
3017 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3018 hroom = skb_headroom(skb);
3019 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3020 rest = len - inpage;
3021 if (rest > hroom)
3022 return 1;
3023 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3024 skb->data -= rest;
3025 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3026 }
3027 return 0;
3028 }
3029 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3030
3031 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3032 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3033 int offset)
3034 {
3035 int length = skb->len - skb->data_len;
3036 int length_here;
3037 int element;
3038 char *data;
3039 int first_lap, cnt;
3040 struct skb_frag_struct *frag;
3041
3042 element = *next_element_to_fill;
3043 data = skb->data;
3044 first_lap = (is_tso == 0 ? 1 : 0);
3045
3046 if (offset >= 0) {
3047 data = skb->data + offset;
3048 length -= offset;
3049 first_lap = 0;
3050 }
3051
3052 while (length > 0) {
3053 /* length_here is the remaining amount of data in this page */
3054 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3055 if (length < length_here)
3056 length_here = length;
3057
3058 buffer->element[element].addr = data;
3059 buffer->element[element].length = length_here;
3060 length -= length_here;
3061 if (!length) {
3062 if (first_lap)
3063 if (skb_shinfo(skb)->nr_frags)
3064 buffer->element[element].flags =
3065 SBAL_FLAGS_FIRST_FRAG;
3066 else
3067 buffer->element[element].flags = 0;
3068 else
3069 buffer->element[element].flags =
3070 SBAL_FLAGS_MIDDLE_FRAG;
3071 } else {
3072 if (first_lap)
3073 buffer->element[element].flags =
3074 SBAL_FLAGS_FIRST_FRAG;
3075 else
3076 buffer->element[element].flags =
3077 SBAL_FLAGS_MIDDLE_FRAG;
3078 }
3079 data += length_here;
3080 element++;
3081 first_lap = 0;
3082 }
3083
3084 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3085 frag = &skb_shinfo(skb)->frags[cnt];
3086 buffer->element[element].addr = (char *)page_to_phys(frag->page)
3087 + frag->page_offset;
3088 buffer->element[element].length = frag->size;
3089 buffer->element[element].flags = SBAL_FLAGS_MIDDLE_FRAG;
3090 element++;
3091 }
3092
3093 if (buffer->element[element - 1].flags)
3094 buffer->element[element - 1].flags = SBAL_FLAGS_LAST_FRAG;
3095 *next_element_to_fill = element;
3096 }
3097
3098 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3099 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3100 struct qeth_hdr *hdr, int offset, int hd_len)
3101 {
3102 struct qdio_buffer *buffer;
3103 int flush_cnt = 0, hdr_len, large_send = 0;
3104
3105 buffer = buf->buffer;
3106 atomic_inc(&skb->users);
3107 skb_queue_tail(&buf->skb_list, skb);
3108
3109 /*check first on TSO ....*/
3110 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3111 int element = buf->next_element_to_fill;
3112
3113 hdr_len = sizeof(struct qeth_hdr_tso) +
3114 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3115 /*fill first buffer entry only with header information */
3116 buffer->element[element].addr = skb->data;
3117 buffer->element[element].length = hdr_len;
3118 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3119 buf->next_element_to_fill++;
3120 skb->data += hdr_len;
3121 skb->len -= hdr_len;
3122 large_send = 1;
3123 }
3124
3125 if (offset >= 0) {
3126 int element = buf->next_element_to_fill;
3127 buffer->element[element].addr = hdr;
3128 buffer->element[element].length = sizeof(struct qeth_hdr) +
3129 hd_len;
3130 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3131 buf->is_header[element] = 1;
3132 buf->next_element_to_fill++;
3133 }
3134
3135 __qeth_fill_buffer(skb, buffer, large_send,
3136 (int *)&buf->next_element_to_fill, offset);
3137
3138 if (!queue->do_pack) {
3139 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3140 /* set state to PRIMED -> will be flushed */
3141 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3142 flush_cnt = 1;
3143 } else {
3144 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3145 if (queue->card->options.performance_stats)
3146 queue->card->perf_stats.skbs_sent_pack++;
3147 if (buf->next_element_to_fill >=
3148 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3149 /*
3150 * packed buffer if full -> set state PRIMED
3151 * -> will be flushed
3152 */
3153 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3154 flush_cnt = 1;
3155 }
3156 }
3157 return flush_cnt;
3158 }
3159
3160 int qeth_do_send_packet_fast(struct qeth_card *card,
3161 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3162 struct qeth_hdr *hdr, int elements_needed,
3163 int offset, int hd_len)
3164 {
3165 struct qeth_qdio_out_buffer *buffer;
3166 int index;
3167
3168 /* spin until we get the queue ... */
3169 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3170 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3171 /* ... now we've got the queue */
3172 index = queue->next_buf_to_fill;
3173 buffer = &queue->bufs[queue->next_buf_to_fill];
3174 /*
3175 * check if buffer is empty to make sure that we do not 'overtake'
3176 * ourselves and try to fill a buffer that is already primed
3177 */
3178 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3179 goto out;
3180 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3181 QDIO_MAX_BUFFERS_PER_Q;
3182 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3183 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3184 qeth_flush_buffers(queue, index, 1);
3185 return 0;
3186 out:
3187 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3188 return -EBUSY;
3189 }
3190 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3191
3192 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3193 struct sk_buff *skb, struct qeth_hdr *hdr,
3194 int elements_needed)
3195 {
3196 struct qeth_qdio_out_buffer *buffer;
3197 int start_index;
3198 int flush_count = 0;
3199 int do_pack = 0;
3200 int tmp;
3201 int rc = 0;
3202
3203 /* spin until we get the queue ... */
3204 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3205 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3206 start_index = queue->next_buf_to_fill;
3207 buffer = &queue->bufs[queue->next_buf_to_fill];
3208 /*
3209 * check if buffer is empty to make sure that we do not 'overtake'
3210 * ourselves and try to fill a buffer that is already primed
3211 */
3212 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3213 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3214 return -EBUSY;
3215 }
3216 /* check if we need to switch packing state of this queue */
3217 qeth_switch_to_packing_if_needed(queue);
3218 if (queue->do_pack) {
3219 do_pack = 1;
3220 /* does packet fit in current buffer? */
3221 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3222 buffer->next_element_to_fill) < elements_needed) {
3223 /* ... no -> set state PRIMED */
3224 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3225 flush_count++;
3226 queue->next_buf_to_fill =
3227 (queue->next_buf_to_fill + 1) %
3228 QDIO_MAX_BUFFERS_PER_Q;
3229 buffer = &queue->bufs[queue->next_buf_to_fill];
3230 /* we did a step forward, so check buffer state
3231 * again */
3232 if (atomic_read(&buffer->state) !=
3233 QETH_QDIO_BUF_EMPTY) {
3234 qeth_flush_buffers(queue, start_index,
3235 flush_count);
3236 atomic_set(&queue->state,
3237 QETH_OUT_Q_UNLOCKED);
3238 return -EBUSY;
3239 }
3240 }
3241 }
3242 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3243 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3244 QDIO_MAX_BUFFERS_PER_Q;
3245 flush_count += tmp;
3246 if (flush_count)
3247 qeth_flush_buffers(queue, start_index, flush_count);
3248 else if (!atomic_read(&queue->set_pci_flags_count))
3249 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3250 /*
3251 * queue->state will go from LOCKED -> UNLOCKED or from
3252 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3253 * (switch packing state or flush buffer to get another pci flag out).
3254 * In that case we will enter this loop
3255 */
3256 while (atomic_dec_return(&queue->state)) {
3257 flush_count = 0;
3258 start_index = queue->next_buf_to_fill;
3259 /* check if we can go back to non-packing state */
3260 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3261 /*
3262 * check if we need to flush a packing buffer to get a pci
3263 * flag out on the queue
3264 */
3265 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3266 flush_count += qeth_flush_buffers_on_no_pci(queue);
3267 if (flush_count)
3268 qeth_flush_buffers(queue, start_index, flush_count);
3269 }
3270 /* at this point the queue is UNLOCKED again */
3271 if (queue->card->options.performance_stats && do_pack)
3272 queue->card->perf_stats.bufs_sent_pack += flush_count;
3273
3274 return rc;
3275 }
3276 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3277
3278 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3279 struct qeth_reply *reply, unsigned long data)
3280 {
3281 struct qeth_ipa_cmd *cmd;
3282 struct qeth_ipacmd_setadpparms *setparms;
3283
3284 QETH_CARD_TEXT(card, 4, "prmadpcb");
3285
3286 cmd = (struct qeth_ipa_cmd *) data;
3287 setparms = &(cmd->data.setadapterparms);
3288
3289 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3290 if (cmd->hdr.return_code) {
3291 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3292 setparms->data.mode = SET_PROMISC_MODE_OFF;
3293 }
3294 card->info.promisc_mode = setparms->data.mode;
3295 return 0;
3296 }
3297
3298 void qeth_setadp_promisc_mode(struct qeth_card *card)
3299 {
3300 enum qeth_ipa_promisc_modes mode;
3301 struct net_device *dev = card->dev;
3302 struct qeth_cmd_buffer *iob;
3303 struct qeth_ipa_cmd *cmd;
3304
3305 QETH_CARD_TEXT(card, 4, "setprom");
3306
3307 if (((dev->flags & IFF_PROMISC) &&
3308 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3309 (!(dev->flags & IFF_PROMISC) &&
3310 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3311 return;
3312 mode = SET_PROMISC_MODE_OFF;
3313 if (dev->flags & IFF_PROMISC)
3314 mode = SET_PROMISC_MODE_ON;
3315 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3316
3317 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3318 sizeof(struct qeth_ipacmd_setadpparms));
3319 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3320 cmd->data.setadapterparms.data.mode = mode;
3321 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3322 }
3323 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3324
3325 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3326 {
3327 struct qeth_card *card;
3328 char dbf_text[15];
3329
3330 card = dev->ml_priv;
3331
3332 QETH_CARD_TEXT(card, 4, "chgmtu");
3333 sprintf(dbf_text, "%8x", new_mtu);
3334 QETH_CARD_TEXT(card, 4, dbf_text);
3335
3336 if (new_mtu < 64)
3337 return -EINVAL;
3338 if (new_mtu > 65535)
3339 return -EINVAL;
3340 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3341 (!qeth_mtu_is_valid(card, new_mtu)))
3342 return -EINVAL;
3343 dev->mtu = new_mtu;
3344 return 0;
3345 }
3346 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3347
3348 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3349 {
3350 struct qeth_card *card;
3351
3352 card = dev->ml_priv;
3353
3354 QETH_CARD_TEXT(card, 5, "getstat");
3355
3356 return &card->stats;
3357 }
3358 EXPORT_SYMBOL_GPL(qeth_get_stats);
3359
3360 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3361 struct qeth_reply *reply, unsigned long data)
3362 {
3363 struct qeth_ipa_cmd *cmd;
3364
3365 QETH_CARD_TEXT(card, 4, "chgmaccb");
3366
3367 cmd = (struct qeth_ipa_cmd *) data;
3368 if (!card->options.layer2 ||
3369 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3370 memcpy(card->dev->dev_addr,
3371 &cmd->data.setadapterparms.data.change_addr.addr,
3372 OSA_ADDR_LEN);
3373 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3374 }
3375 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3376 return 0;
3377 }
3378
3379 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3380 {
3381 int rc;
3382 struct qeth_cmd_buffer *iob;
3383 struct qeth_ipa_cmd *cmd;
3384
3385 QETH_CARD_TEXT(card, 4, "chgmac");
3386
3387 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3388 sizeof(struct qeth_ipacmd_setadpparms));
3389 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3390 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3391 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3392 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3393 card->dev->dev_addr, OSA_ADDR_LEN);
3394 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3395 NULL);
3396 return rc;
3397 }
3398 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3399
3400 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3401 struct qeth_reply *reply, unsigned long data)
3402 {
3403 struct qeth_ipa_cmd *cmd;
3404 struct qeth_set_access_ctrl *access_ctrl_req;
3405
3406 QETH_CARD_TEXT(card, 4, "setaccb");
3407
3408 cmd = (struct qeth_ipa_cmd *) data;
3409 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3410 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3411 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3412 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3413 cmd->data.setadapterparms.hdr.return_code);
3414 switch (cmd->data.setadapterparms.hdr.return_code) {
3415 case SET_ACCESS_CTRL_RC_SUCCESS:
3416 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3417 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3418 {
3419 card->options.isolation = access_ctrl_req->subcmd_code;
3420 if (card->options.isolation == ISOLATION_MODE_NONE) {
3421 dev_info(&card->gdev->dev,
3422 "QDIO data connection isolation is deactivated\n");
3423 } else {
3424 dev_info(&card->gdev->dev,
3425 "QDIO data connection isolation is activated\n");
3426 }
3427 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3428 card->gdev->dev.kobj.name,
3429 access_ctrl_req->subcmd_code,
3430 cmd->data.setadapterparms.hdr.return_code);
3431 break;
3432 }
3433 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3434 {
3435 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
3436 card->gdev->dev.kobj.name,
3437 access_ctrl_req->subcmd_code,
3438 cmd->data.setadapterparms.hdr.return_code);
3439 dev_err(&card->gdev->dev, "Adapter does not "
3440 "support QDIO data connection isolation\n");
3441
3442 /* ensure isolation mode is "none" */
3443 card->options.isolation = ISOLATION_MODE_NONE;
3444 break;
3445 }
3446 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3447 {
3448 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3449 card->gdev->dev.kobj.name,
3450 access_ctrl_req->subcmd_code,
3451 cmd->data.setadapterparms.hdr.return_code);
3452 dev_err(&card->gdev->dev,
3453 "Adapter is dedicated. "
3454 "QDIO data connection isolation not supported\n");
3455
3456 /* ensure isolation mode is "none" */
3457 card->options.isolation = ISOLATION_MODE_NONE;
3458 break;
3459 }
3460 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3461 {
3462 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3463 card->gdev->dev.kobj.name,
3464 access_ctrl_req->subcmd_code,
3465 cmd->data.setadapterparms.hdr.return_code);
3466 dev_err(&card->gdev->dev,
3467 "TSO does not permit QDIO data connection isolation\n");
3468
3469 /* ensure isolation mode is "none" */
3470 card->options.isolation = ISOLATION_MODE_NONE;
3471 break;
3472 }
3473 default:
3474 {
3475 /* this should never happen */
3476 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3477 "==UNKNOWN\n",
3478 card->gdev->dev.kobj.name,
3479 access_ctrl_req->subcmd_code,
3480 cmd->data.setadapterparms.hdr.return_code);
3481
3482 /* ensure isolation mode is "none" */
3483 card->options.isolation = ISOLATION_MODE_NONE;
3484 break;
3485 }
3486 }
3487 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3488 return 0;
3489 }
3490
3491 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3492 enum qeth_ipa_isolation_modes isolation)
3493 {
3494 int rc;
3495 struct qeth_cmd_buffer *iob;
3496 struct qeth_ipa_cmd *cmd;
3497 struct qeth_set_access_ctrl *access_ctrl_req;
3498
3499 QETH_CARD_TEXT(card, 4, "setacctl");
3500
3501 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3502 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3503
3504 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3505 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3506 sizeof(struct qeth_set_access_ctrl));
3507 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3508 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3509 access_ctrl_req->subcmd_code = isolation;
3510
3511 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3512 NULL);
3513 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3514 return rc;
3515 }
3516
3517 int qeth_set_access_ctrl_online(struct qeth_card *card)
3518 {
3519 int rc = 0;
3520
3521 QETH_CARD_TEXT(card, 4, "setactlo");
3522
3523 if ((card->info.type == QETH_CARD_TYPE_OSD ||
3524 card->info.type == QETH_CARD_TYPE_OSX) &&
3525 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3526 rc = qeth_setadpparms_set_access_ctrl(card,
3527 card->options.isolation);
3528 if (rc) {
3529 QETH_DBF_MESSAGE(3,
3530 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
3531 card->gdev->dev.kobj.name,
3532 rc);
3533 }
3534 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3535 card->options.isolation = ISOLATION_MODE_NONE;
3536
3537 dev_err(&card->gdev->dev, "Adapter does not "
3538 "support QDIO data connection isolation\n");
3539 rc = -EOPNOTSUPP;
3540 }
3541 return rc;
3542 }
3543 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3544
3545 void qeth_tx_timeout(struct net_device *dev)
3546 {
3547 struct qeth_card *card;
3548
3549 card = dev->ml_priv;
3550 QETH_CARD_TEXT(card, 4, "txtimeo");
3551 card->stats.tx_errors++;
3552 qeth_schedule_recovery(card);
3553 }
3554 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3555
3556 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3557 {
3558 struct qeth_card *card = dev->ml_priv;
3559 int rc = 0;
3560
3561 switch (regnum) {
3562 case MII_BMCR: /* Basic mode control register */
3563 rc = BMCR_FULLDPLX;
3564 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3565 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3566 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3567 rc |= BMCR_SPEED100;
3568 break;
3569 case MII_BMSR: /* Basic mode status register */
3570 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3571 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3572 BMSR_100BASE4;
3573 break;
3574 case MII_PHYSID1: /* PHYS ID 1 */
3575 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3576 dev->dev_addr[2];
3577 rc = (rc >> 5) & 0xFFFF;
3578 break;
3579 case MII_PHYSID2: /* PHYS ID 2 */
3580 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3581 break;
3582 case MII_ADVERTISE: /* Advertisement control reg */
3583 rc = ADVERTISE_ALL;
3584 break;
3585 case MII_LPA: /* Link partner ability reg */
3586 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3587 LPA_100BASE4 | LPA_LPACK;
3588 break;
3589 case MII_EXPANSION: /* Expansion register */
3590 break;
3591 case MII_DCOUNTER: /* disconnect counter */
3592 break;
3593 case MII_FCSCOUNTER: /* false carrier counter */
3594 break;
3595 case MII_NWAYTEST: /* N-way auto-neg test register */
3596 break;
3597 case MII_RERRCOUNTER: /* rx error counter */
3598 rc = card->stats.rx_errors;
3599 break;
3600 case MII_SREVISION: /* silicon revision */
3601 break;
3602 case MII_RESV1: /* reserved 1 */
3603 break;
3604 case MII_LBRERROR: /* loopback, rx, bypass error */
3605 break;
3606 case MII_PHYADDR: /* physical address */
3607 break;
3608 case MII_RESV2: /* reserved 2 */
3609 break;
3610 case MII_TPISTATUS: /* TPI status for 10mbps */
3611 break;
3612 case MII_NCONFIG: /* network interface config */
3613 break;
3614 default:
3615 break;
3616 }
3617 return rc;
3618 }
3619 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3620
3621 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3622 struct qeth_cmd_buffer *iob, int len,
3623 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3624 unsigned long),
3625 void *reply_param)
3626 {
3627 u16 s1, s2;
3628
3629 QETH_CARD_TEXT(card, 4, "sendsnmp");
3630
3631 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3632 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3633 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3634 /* adjust PDU length fields in IPA_PDU_HEADER */
3635 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3636 s2 = (u32) len;
3637 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3638 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3639 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3640 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3641 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3642 reply_cb, reply_param);
3643 }
3644
3645 static int qeth_snmp_command_cb(struct qeth_card *card,
3646 struct qeth_reply *reply, unsigned long sdata)
3647 {
3648 struct qeth_ipa_cmd *cmd;
3649 struct qeth_arp_query_info *qinfo;
3650 struct qeth_snmp_cmd *snmp;
3651 unsigned char *data;
3652 __u16 data_len;
3653
3654 QETH_CARD_TEXT(card, 3, "snpcmdcb");
3655
3656 cmd = (struct qeth_ipa_cmd *) sdata;
3657 data = (unsigned char *)((char *)cmd - reply->offset);
3658 qinfo = (struct qeth_arp_query_info *) reply->param;
3659 snmp = &cmd->data.setadapterparms.data.snmp;
3660
3661 if (cmd->hdr.return_code) {
3662 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
3663 return 0;
3664 }
3665 if (cmd->data.setadapterparms.hdr.return_code) {
3666 cmd->hdr.return_code =
3667 cmd->data.setadapterparms.hdr.return_code;
3668 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
3669 return 0;
3670 }
3671 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3672 if (cmd->data.setadapterparms.hdr.seq_no == 1)
3673 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3674 else
3675 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3676
3677 /* check if there is enough room in userspace */
3678 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3679 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
3680 cmd->hdr.return_code = -ENOMEM;
3681 return 0;
3682 }
3683 QETH_CARD_TEXT_(card, 4, "snore%i",
3684 cmd->data.setadapterparms.hdr.used_total);
3685 QETH_CARD_TEXT_(card, 4, "sseqn%i",
3686 cmd->data.setadapterparms.hdr.seq_no);
3687 /*copy entries to user buffer*/
3688 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3689 memcpy(qinfo->udata + qinfo->udata_offset,
3690 (char *)snmp,
3691 data_len + offsetof(struct qeth_snmp_cmd, data));
3692 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3693 } else {
3694 memcpy(qinfo->udata + qinfo->udata_offset,
3695 (char *)&snmp->request, data_len);
3696 }
3697 qinfo->udata_offset += data_len;
3698 /* check if all replies received ... */
3699 QETH_CARD_TEXT_(card, 4, "srtot%i",
3700 cmd->data.setadapterparms.hdr.used_total);
3701 QETH_CARD_TEXT_(card, 4, "srseq%i",
3702 cmd->data.setadapterparms.hdr.seq_no);
3703 if (cmd->data.setadapterparms.hdr.seq_no <
3704 cmd->data.setadapterparms.hdr.used_total)
3705 return 1;
3706 return 0;
3707 }
3708
3709 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3710 {
3711 struct qeth_cmd_buffer *iob;
3712 struct qeth_ipa_cmd *cmd;
3713 struct qeth_snmp_ureq *ureq;
3714 int req_len;
3715 struct qeth_arp_query_info qinfo = {0, };
3716 int rc = 0;
3717
3718 QETH_CARD_TEXT(card, 3, "snmpcmd");
3719
3720 if (card->info.guestlan)
3721 return -EOPNOTSUPP;
3722
3723 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3724 (!card->options.layer2)) {
3725 return -EOPNOTSUPP;
3726 }
3727 /* skip 4 bytes (data_len struct member) to get req_len */
3728 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3729 return -EFAULT;
3730 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
3731 if (IS_ERR(ureq)) {
3732 QETH_CARD_TEXT(card, 2, "snmpnome");
3733 return PTR_ERR(ureq);
3734 }
3735 qinfo.udata_len = ureq->hdr.data_len;
3736 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3737 if (!qinfo.udata) {
3738 kfree(ureq);
3739 return -ENOMEM;
3740 }
3741 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3742
3743 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3744 QETH_SNMP_SETADP_CMDLENGTH + req_len);
3745 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3746 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3747 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3748 qeth_snmp_command_cb, (void *)&qinfo);
3749 if (rc)
3750 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3751 QETH_CARD_IFNAME(card), rc);
3752 else {
3753 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3754 rc = -EFAULT;
3755 }
3756
3757 kfree(ureq);
3758 kfree(qinfo.udata);
3759 return rc;
3760 }
3761 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3762
3763 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3764 {
3765 switch (card->info.type) {
3766 case QETH_CARD_TYPE_IQD:
3767 return 2;
3768 default:
3769 return 0;
3770 }
3771 }
3772
3773 static void qeth_determine_capabilities(struct qeth_card *card)
3774 {
3775 int rc;
3776 int length;
3777 char *prcd;
3778 struct ccw_device *ddev;
3779 int ddev_offline = 0;
3780
3781 QETH_DBF_TEXT(SETUP, 2, "detcapab");
3782 ddev = CARD_DDEV(card);
3783 if (!ddev->online) {
3784 ddev_offline = 1;
3785 rc = ccw_device_set_online(ddev);
3786 if (rc) {
3787 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3788 goto out;
3789 }
3790 }
3791
3792 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
3793 if (rc) {
3794 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
3795 dev_name(&card->gdev->dev), rc);
3796 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3797 goto out_offline;
3798 }
3799 qeth_configure_unitaddr(card, prcd);
3800 qeth_configure_blkt_default(card, prcd);
3801 kfree(prcd);
3802
3803 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
3804 if (rc)
3805 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3806
3807 out_offline:
3808 if (ddev_offline == 1)
3809 ccw_device_set_offline(ddev);
3810 out:
3811 return;
3812 }
3813
3814 static int qeth_qdio_establish(struct qeth_card *card)
3815 {
3816 struct qdio_initialize init_data;
3817 char *qib_param_field;
3818 struct qdio_buffer **in_sbal_ptrs;
3819 struct qdio_buffer **out_sbal_ptrs;
3820 int i, j, k;
3821 int rc = 0;
3822
3823 QETH_DBF_TEXT(SETUP, 2, "qdioest");
3824
3825 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3826 GFP_KERNEL);
3827 if (!qib_param_field)
3828 return -ENOMEM;
3829
3830 qeth_create_qib_param_field(card, qib_param_field);
3831 qeth_create_qib_param_field_blkt(card, qib_param_field);
3832
3833 in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3834 GFP_KERNEL);
3835 if (!in_sbal_ptrs) {
3836 kfree(qib_param_field);
3837 return -ENOMEM;
3838 }
3839 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3840 in_sbal_ptrs[i] = (struct qdio_buffer *)
3841 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3842
3843 out_sbal_ptrs =
3844 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3845 sizeof(void *), GFP_KERNEL);
3846 if (!out_sbal_ptrs) {
3847 kfree(in_sbal_ptrs);
3848 kfree(qib_param_field);
3849 return -ENOMEM;
3850 }
3851 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3852 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3853 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3854 card->qdio.out_qs[i]->bufs[j].buffer);
3855 }
3856
3857 memset(&init_data, 0, sizeof(struct qdio_initialize));
3858 init_data.cdev = CARD_DDEV(card);
3859 init_data.q_format = qeth_get_qdio_q_format(card);
3860 init_data.qib_param_field_format = 0;
3861 init_data.qib_param_field = qib_param_field;
3862 init_data.no_input_qs = 1;
3863 init_data.no_output_qs = card->qdio.no_out_queues;
3864 init_data.input_handler = card->discipline.input_handler;
3865 init_data.output_handler = card->discipline.output_handler;
3866 init_data.queue_start_poll = card->discipline.start_poll;
3867 init_data.int_parm = (unsigned long) card;
3868 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
3869 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3870 init_data.scan_threshold =
3871 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
3872
3873 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3874 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3875 rc = qdio_allocate(&init_data);
3876 if (rc) {
3877 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3878 goto out;
3879 }
3880 rc = qdio_establish(&init_data);
3881 if (rc) {
3882 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3883 qdio_free(CARD_DDEV(card));
3884 }
3885 }
3886 out:
3887 kfree(out_sbal_ptrs);
3888 kfree(in_sbal_ptrs);
3889 kfree(qib_param_field);
3890 return rc;
3891 }
3892
3893 static void qeth_core_free_card(struct qeth_card *card)
3894 {
3895
3896 QETH_DBF_TEXT(SETUP, 2, "freecrd");
3897 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3898 qeth_clean_channel(&card->read);
3899 qeth_clean_channel(&card->write);
3900 if (card->dev)
3901 free_netdev(card->dev);
3902 kfree(card->ip_tbd_list);
3903 qeth_free_qdio_buffers(card);
3904 unregister_service_level(&card->qeth_service_level);
3905 kfree(card);
3906 }
3907
3908 static struct ccw_device_id qeth_ids[] = {
3909 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
3910 .driver_info = QETH_CARD_TYPE_OSD},
3911 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
3912 .driver_info = QETH_CARD_TYPE_IQD},
3913 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
3914 .driver_info = QETH_CARD_TYPE_OSN},
3915 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
3916 .driver_info = QETH_CARD_TYPE_OSM},
3917 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
3918 .driver_info = QETH_CARD_TYPE_OSX},
3919 {},
3920 };
3921 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3922
3923 static struct ccw_driver qeth_ccw_driver = {
3924 .name = "qeth",
3925 .ids = qeth_ids,
3926 .probe = ccwgroup_probe_ccwdev,
3927 .remove = ccwgroup_remove_ccwdev,
3928 };
3929
3930 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3931 unsigned long driver_id)
3932 {
3933 return ccwgroup_create_from_string(root_dev, driver_id,
3934 &qeth_ccw_driver, 3, buf);
3935 }
3936
3937 int qeth_core_hardsetup_card(struct qeth_card *card)
3938 {
3939 int retries = 0;
3940 int rc;
3941
3942 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3943 atomic_set(&card->force_alloc_skb, 0);
3944 qeth_get_channel_path_desc(card);
3945 retry:
3946 if (retries)
3947 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3948 dev_name(&card->gdev->dev));
3949 ccw_device_set_offline(CARD_DDEV(card));
3950 ccw_device_set_offline(CARD_WDEV(card));
3951 ccw_device_set_offline(CARD_RDEV(card));
3952 rc = ccw_device_set_online(CARD_RDEV(card));
3953 if (rc)
3954 goto retriable;
3955 rc = ccw_device_set_online(CARD_WDEV(card));
3956 if (rc)
3957 goto retriable;
3958 rc = ccw_device_set_online(CARD_DDEV(card));
3959 if (rc)
3960 goto retriable;
3961 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3962 retriable:
3963 if (rc == -ERESTARTSYS) {
3964 QETH_DBF_TEXT(SETUP, 2, "break1");
3965 return rc;
3966 } else if (rc) {
3967 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3968 if (++retries > 3)
3969 goto out;
3970 else
3971 goto retry;
3972 }
3973 qeth_determine_capabilities(card);
3974 qeth_init_tokens(card);
3975 qeth_init_func_level(card);
3976 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3977 if (rc == -ERESTARTSYS) {
3978 QETH_DBF_TEXT(SETUP, 2, "break2");
3979 return rc;
3980 } else if (rc) {
3981 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3982 if (--retries < 0)
3983 goto out;
3984 else
3985 goto retry;
3986 }
3987 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3988 if (rc == -ERESTARTSYS) {
3989 QETH_DBF_TEXT(SETUP, 2, "break3");
3990 return rc;
3991 } else if (rc) {
3992 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3993 if (--retries < 0)
3994 goto out;
3995 else
3996 goto retry;
3997 }
3998 card->read_or_write_problem = 0;
3999 rc = qeth_mpc_initialize(card);
4000 if (rc) {
4001 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4002 goto out;
4003 }
4004 return 0;
4005 out:
4006 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4007 "an error on the device\n");
4008 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4009 dev_name(&card->gdev->dev), rc);
4010 return rc;
4011 }
4012 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4013
4014 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
4015 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4016 {
4017 struct page *page = virt_to_page(element->addr);
4018 if (*pskb == NULL) {
4019 /* the upper protocol layers assume that there is data in the
4020 * skb itself. Copy a small amount (64 bytes) to make them
4021 * happy. */
4022 *pskb = dev_alloc_skb(64 + ETH_HLEN);
4023 if (!(*pskb))
4024 return -ENOMEM;
4025 skb_reserve(*pskb, ETH_HLEN);
4026 if (data_len <= 64) {
4027 memcpy(skb_put(*pskb, data_len), element->addr + offset,
4028 data_len);
4029 } else {
4030 get_page(page);
4031 memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
4032 skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
4033 data_len - 64);
4034 (*pskb)->data_len += data_len - 64;
4035 (*pskb)->len += data_len - 64;
4036 (*pskb)->truesize += data_len - 64;
4037 (*pfrag)++;
4038 }
4039 } else {
4040 get_page(page);
4041 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4042 (*pskb)->data_len += data_len;
4043 (*pskb)->len += data_len;
4044 (*pskb)->truesize += data_len;
4045 (*pfrag)++;
4046 }
4047 return 0;
4048 }
4049
4050 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4051 struct qdio_buffer *buffer,
4052 struct qdio_buffer_element **__element, int *__offset,
4053 struct qeth_hdr **hdr)
4054 {
4055 struct qdio_buffer_element *element = *__element;
4056 int offset = *__offset;
4057 struct sk_buff *skb = NULL;
4058 int skb_len = 0;
4059 void *data_ptr;
4060 int data_len;
4061 int headroom = 0;
4062 int use_rx_sg = 0;
4063 int frag = 0;
4064
4065 /* qeth_hdr must not cross element boundaries */
4066 if (element->length < offset + sizeof(struct qeth_hdr)) {
4067 if (qeth_is_last_sbale(element))
4068 return NULL;
4069 element++;
4070 offset = 0;
4071 if (element->length < sizeof(struct qeth_hdr))
4072 return NULL;
4073 }
4074 *hdr = element->addr + offset;
4075
4076 offset += sizeof(struct qeth_hdr);
4077 switch ((*hdr)->hdr.l2.id) {
4078 case QETH_HEADER_TYPE_LAYER2:
4079 skb_len = (*hdr)->hdr.l2.pkt_length;
4080 break;
4081 case QETH_HEADER_TYPE_LAYER3:
4082 skb_len = (*hdr)->hdr.l3.length;
4083 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4084 (card->info.link_type == QETH_LINK_TYPE_HSTR))
4085 headroom = TR_HLEN;
4086 else
4087 headroom = ETH_HLEN;
4088 break;
4089 case QETH_HEADER_TYPE_OSN:
4090 skb_len = (*hdr)->hdr.osn.pdu_length;
4091 headroom = sizeof(struct qeth_hdr);
4092 break;
4093 default:
4094 break;
4095 }
4096
4097 if (!skb_len)
4098 return NULL;
4099
4100 if ((skb_len >= card->options.rx_sg_cb) &&
4101 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4102 (!atomic_read(&card->force_alloc_skb))) {
4103 use_rx_sg = 1;
4104 } else {
4105 skb = dev_alloc_skb(skb_len + headroom);
4106 if (!skb)
4107 goto no_mem;
4108 if (headroom)
4109 skb_reserve(skb, headroom);
4110 }
4111
4112 data_ptr = element->addr + offset;
4113 while (skb_len) {
4114 data_len = min(skb_len, (int)(element->length - offset));
4115 if (data_len) {
4116 if (use_rx_sg) {
4117 if (qeth_create_skb_frag(element, &skb, offset,
4118 &frag, data_len))
4119 goto no_mem;
4120 } else {
4121 memcpy(skb_put(skb, data_len), data_ptr,
4122 data_len);
4123 }
4124 }
4125 skb_len -= data_len;
4126 if (skb_len) {
4127 if (qeth_is_last_sbale(element)) {
4128 QETH_CARD_TEXT(card, 4, "unexeob");
4129 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4130 dev_kfree_skb_any(skb);
4131 card->stats.rx_errors++;
4132 return NULL;
4133 }
4134 element++;
4135 offset = 0;
4136 data_ptr = element->addr;
4137 } else {
4138 offset += data_len;
4139 }
4140 }
4141 *__element = element;
4142 *__offset = offset;
4143 if (use_rx_sg && card->options.performance_stats) {
4144 card->perf_stats.sg_skbs_rx++;
4145 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4146 }
4147 return skb;
4148 no_mem:
4149 if (net_ratelimit()) {
4150 QETH_CARD_TEXT(card, 2, "noskbmem");
4151 }
4152 card->stats.rx_dropped++;
4153 return NULL;
4154 }
4155 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4156
4157 static void qeth_unregister_dbf_views(void)
4158 {
4159 int x;
4160 for (x = 0; x < QETH_DBF_INFOS; x++) {
4161 debug_unregister(qeth_dbf[x].id);
4162 qeth_dbf[x].id = NULL;
4163 }
4164 }
4165
4166 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4167 {
4168 char dbf_txt_buf[32];
4169 va_list args;
4170
4171 if (level > id->level)
4172 return;
4173 va_start(args, fmt);
4174 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4175 va_end(args);
4176 debug_text_event(id, level, dbf_txt_buf);
4177 }
4178 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4179
4180 static int qeth_register_dbf_views(void)
4181 {
4182 int ret;
4183 int x;
4184
4185 for (x = 0; x < QETH_DBF_INFOS; x++) {
4186 /* register the areas */
4187 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4188 qeth_dbf[x].pages,
4189 qeth_dbf[x].areas,
4190 qeth_dbf[x].len);
4191 if (qeth_dbf[x].id == NULL) {
4192 qeth_unregister_dbf_views();
4193 return -ENOMEM;
4194 }
4195
4196 /* register a view */
4197 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4198 if (ret) {
4199 qeth_unregister_dbf_views();
4200 return ret;
4201 }
4202
4203 /* set a passing level */
4204 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4205 }
4206
4207 return 0;
4208 }
4209
4210 int qeth_core_load_discipline(struct qeth_card *card,
4211 enum qeth_discipline_id discipline)
4212 {
4213 int rc = 0;
4214 switch (discipline) {
4215 case QETH_DISCIPLINE_LAYER3:
4216 card->discipline.ccwgdriver = try_then_request_module(
4217 symbol_get(qeth_l3_ccwgroup_driver),
4218 "qeth_l3");
4219 break;
4220 case QETH_DISCIPLINE_LAYER2:
4221 card->discipline.ccwgdriver = try_then_request_module(
4222 symbol_get(qeth_l2_ccwgroup_driver),
4223 "qeth_l2");
4224 break;
4225 }
4226 if (!card->discipline.ccwgdriver) {
4227 dev_err(&card->gdev->dev, "There is no kernel module to "
4228 "support discipline %d\n", discipline);
4229 rc = -EINVAL;
4230 }
4231 return rc;
4232 }
4233
4234 void qeth_core_free_discipline(struct qeth_card *card)
4235 {
4236 if (card->options.layer2)
4237 symbol_put(qeth_l2_ccwgroup_driver);
4238 else
4239 symbol_put(qeth_l3_ccwgroup_driver);
4240 card->discipline.ccwgdriver = NULL;
4241 }
4242
4243 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4244 {
4245 struct qeth_card *card;
4246 struct device *dev;
4247 int rc;
4248 unsigned long flags;
4249 char dbf_name[20];
4250
4251 QETH_DBF_TEXT(SETUP, 2, "probedev");
4252
4253 dev = &gdev->dev;
4254 if (!get_device(dev))
4255 return -ENODEV;
4256
4257 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4258
4259 card = qeth_alloc_card();
4260 if (!card) {
4261 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4262 rc = -ENOMEM;
4263 goto err_dev;
4264 }
4265
4266 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
4267 dev_name(&gdev->dev));
4268 card->debug = debug_register(dbf_name, 2, 1, 8);
4269 if (!card->debug) {
4270 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
4271 rc = -ENOMEM;
4272 goto err_card;
4273 }
4274 debug_register_view(card->debug, &debug_hex_ascii_view);
4275
4276 card->read.ccwdev = gdev->cdev[0];
4277 card->write.ccwdev = gdev->cdev[1];
4278 card->data.ccwdev = gdev->cdev[2];
4279 dev_set_drvdata(&gdev->dev, card);
4280 card->gdev = gdev;
4281 gdev->cdev[0]->handler = qeth_irq;
4282 gdev->cdev[1]->handler = qeth_irq;
4283 gdev->cdev[2]->handler = qeth_irq;
4284
4285 rc = qeth_determine_card_type(card);
4286 if (rc) {
4287 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4288 goto err_dbf;
4289 }
4290 rc = qeth_setup_card(card);
4291 if (rc) {
4292 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4293 goto err_dbf;
4294 }
4295
4296 if (card->info.type == QETH_CARD_TYPE_OSN)
4297 rc = qeth_core_create_osn_attributes(dev);
4298 else
4299 rc = qeth_core_create_device_attributes(dev);
4300 if (rc)
4301 goto err_dbf;
4302 switch (card->info.type) {
4303 case QETH_CARD_TYPE_OSN:
4304 case QETH_CARD_TYPE_OSM:
4305 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4306 if (rc)
4307 goto err_attr;
4308 rc = card->discipline.ccwgdriver->probe(card->gdev);
4309 if (rc)
4310 goto err_disc;
4311 case QETH_CARD_TYPE_OSD:
4312 case QETH_CARD_TYPE_OSX:
4313 default:
4314 break;
4315 }
4316
4317 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4318 list_add_tail(&card->list, &qeth_core_card_list.list);
4319 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4320
4321 qeth_determine_capabilities(card);
4322 return 0;
4323
4324 err_disc:
4325 qeth_core_free_discipline(card);
4326 err_attr:
4327 if (card->info.type == QETH_CARD_TYPE_OSN)
4328 qeth_core_remove_osn_attributes(dev);
4329 else
4330 qeth_core_remove_device_attributes(dev);
4331 err_dbf:
4332 debug_unregister(card->debug);
4333 err_card:
4334 qeth_core_free_card(card);
4335 err_dev:
4336 put_device(dev);
4337 return rc;
4338 }
4339
4340 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4341 {
4342 unsigned long flags;
4343 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4344
4345 QETH_DBF_TEXT(SETUP, 2, "removedv");
4346
4347 if (card->info.type == QETH_CARD_TYPE_OSN) {
4348 qeth_core_remove_osn_attributes(&gdev->dev);
4349 } else {
4350 qeth_core_remove_device_attributes(&gdev->dev);
4351 }
4352
4353 if (card->discipline.ccwgdriver) {
4354 card->discipline.ccwgdriver->remove(gdev);
4355 qeth_core_free_discipline(card);
4356 }
4357
4358 debug_unregister(card->debug);
4359 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4360 list_del(&card->list);
4361 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4362 qeth_core_free_card(card);
4363 dev_set_drvdata(&gdev->dev, NULL);
4364 put_device(&gdev->dev);
4365 return;
4366 }
4367
4368 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4369 {
4370 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4371 int rc = 0;
4372 int def_discipline;
4373
4374 if (!card->discipline.ccwgdriver) {
4375 if (card->info.type == QETH_CARD_TYPE_IQD)
4376 def_discipline = QETH_DISCIPLINE_LAYER3;
4377 else
4378 def_discipline = QETH_DISCIPLINE_LAYER2;
4379 rc = qeth_core_load_discipline(card, def_discipline);
4380 if (rc)
4381 goto err;
4382 rc = card->discipline.ccwgdriver->probe(card->gdev);
4383 if (rc)
4384 goto err;
4385 }
4386 rc = card->discipline.ccwgdriver->set_online(gdev);
4387 err:
4388 return rc;
4389 }
4390
4391 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4392 {
4393 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4394 return card->discipline.ccwgdriver->set_offline(gdev);
4395 }
4396
4397 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4398 {
4399 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4400 if (card->discipline.ccwgdriver &&
4401 card->discipline.ccwgdriver->shutdown)
4402 card->discipline.ccwgdriver->shutdown(gdev);
4403 }
4404
4405 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4406 {
4407 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4408 if (card->discipline.ccwgdriver &&
4409 card->discipline.ccwgdriver->prepare)
4410 return card->discipline.ccwgdriver->prepare(gdev);
4411 return 0;
4412 }
4413
4414 static void qeth_core_complete(struct ccwgroup_device *gdev)
4415 {
4416 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4417 if (card->discipline.ccwgdriver &&
4418 card->discipline.ccwgdriver->complete)
4419 card->discipline.ccwgdriver->complete(gdev);
4420 }
4421
4422 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4423 {
4424 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4425 if (card->discipline.ccwgdriver &&
4426 card->discipline.ccwgdriver->freeze)
4427 return card->discipline.ccwgdriver->freeze(gdev);
4428 return 0;
4429 }
4430
4431 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4432 {
4433 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4434 if (card->discipline.ccwgdriver &&
4435 card->discipline.ccwgdriver->thaw)
4436 return card->discipline.ccwgdriver->thaw(gdev);
4437 return 0;
4438 }
4439
4440 static int qeth_core_restore(struct ccwgroup_device *gdev)
4441 {
4442 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4443 if (card->discipline.ccwgdriver &&
4444 card->discipline.ccwgdriver->restore)
4445 return card->discipline.ccwgdriver->restore(gdev);
4446 return 0;
4447 }
4448
4449 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4450 .owner = THIS_MODULE,
4451 .name = "qeth",
4452 .driver_id = 0xD8C5E3C8,
4453 .probe = qeth_core_probe_device,
4454 .remove = qeth_core_remove_device,
4455 .set_online = qeth_core_set_online,
4456 .set_offline = qeth_core_set_offline,
4457 .shutdown = qeth_core_shutdown,
4458 .prepare = qeth_core_prepare,
4459 .complete = qeth_core_complete,
4460 .freeze = qeth_core_freeze,
4461 .thaw = qeth_core_thaw,
4462 .restore = qeth_core_restore,
4463 };
4464
4465 static ssize_t
4466 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4467 size_t count)
4468 {
4469 int err;
4470 err = qeth_core_driver_group(buf, qeth_core_root_dev,
4471 qeth_core_ccwgroup_driver.driver_id);
4472 if (err)
4473 return err;
4474 else
4475 return count;
4476 }
4477
4478 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4479
4480 static struct {
4481 const char str[ETH_GSTRING_LEN];
4482 } qeth_ethtool_stats_keys[] = {
4483 /* 0 */{"rx skbs"},
4484 {"rx buffers"},
4485 {"tx skbs"},
4486 {"tx buffers"},
4487 {"tx skbs no packing"},
4488 {"tx buffers no packing"},
4489 {"tx skbs packing"},
4490 {"tx buffers packing"},
4491 {"tx sg skbs"},
4492 {"tx sg frags"},
4493 /* 10 */{"rx sg skbs"},
4494 {"rx sg frags"},
4495 {"rx sg page allocs"},
4496 {"tx large kbytes"},
4497 {"tx large count"},
4498 {"tx pk state ch n->p"},
4499 {"tx pk state ch p->n"},
4500 {"tx pk watermark low"},
4501 {"tx pk watermark high"},
4502 {"queue 0 buffer usage"},
4503 /* 20 */{"queue 1 buffer usage"},
4504 {"queue 2 buffer usage"},
4505 {"queue 3 buffer usage"},
4506 {"rx poll time"},
4507 {"rx poll count"},
4508 {"rx do_QDIO time"},
4509 {"rx do_QDIO count"},
4510 {"tx handler time"},
4511 {"tx handler count"},
4512 {"tx time"},
4513 /* 30 */{"tx count"},
4514 {"tx do_QDIO time"},
4515 {"tx do_QDIO count"},
4516 {"tx csum"},
4517 {"tx lin"},
4518 };
4519
4520 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4521 {
4522 switch (stringset) {
4523 case ETH_SS_STATS:
4524 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4525 default:
4526 return -EINVAL;
4527 }
4528 }
4529 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4530
4531 void qeth_core_get_ethtool_stats(struct net_device *dev,
4532 struct ethtool_stats *stats, u64 *data)
4533 {
4534 struct qeth_card *card = dev->ml_priv;
4535 data[0] = card->stats.rx_packets -
4536 card->perf_stats.initial_rx_packets;
4537 data[1] = card->perf_stats.bufs_rec;
4538 data[2] = card->stats.tx_packets -
4539 card->perf_stats.initial_tx_packets;
4540 data[3] = card->perf_stats.bufs_sent;
4541 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4542 - card->perf_stats.skbs_sent_pack;
4543 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4544 data[6] = card->perf_stats.skbs_sent_pack;
4545 data[7] = card->perf_stats.bufs_sent_pack;
4546 data[8] = card->perf_stats.sg_skbs_sent;
4547 data[9] = card->perf_stats.sg_frags_sent;
4548 data[10] = card->perf_stats.sg_skbs_rx;
4549 data[11] = card->perf_stats.sg_frags_rx;
4550 data[12] = card->perf_stats.sg_alloc_page_rx;
4551 data[13] = (card->perf_stats.large_send_bytes >> 10);
4552 data[14] = card->perf_stats.large_send_cnt;
4553 data[15] = card->perf_stats.sc_dp_p;
4554 data[16] = card->perf_stats.sc_p_dp;
4555 data[17] = QETH_LOW_WATERMARK_PACK;
4556 data[18] = QETH_HIGH_WATERMARK_PACK;
4557 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4558 data[20] = (card->qdio.no_out_queues > 1) ?
4559 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4560 data[21] = (card->qdio.no_out_queues > 2) ?
4561 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4562 data[22] = (card->qdio.no_out_queues > 3) ?
4563 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4564 data[23] = card->perf_stats.inbound_time;
4565 data[24] = card->perf_stats.inbound_cnt;
4566 data[25] = card->perf_stats.inbound_do_qdio_time;
4567 data[26] = card->perf_stats.inbound_do_qdio_cnt;
4568 data[27] = card->perf_stats.outbound_handler_time;
4569 data[28] = card->perf_stats.outbound_handler_cnt;
4570 data[29] = card->perf_stats.outbound_time;
4571 data[30] = card->perf_stats.outbound_cnt;
4572 data[31] = card->perf_stats.outbound_do_qdio_time;
4573 data[32] = card->perf_stats.outbound_do_qdio_cnt;
4574 data[33] = card->perf_stats.tx_csum;
4575 data[34] = card->perf_stats.tx_lin;
4576 }
4577 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4578
4579 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4580 {
4581 switch (stringset) {
4582 case ETH_SS_STATS:
4583 memcpy(data, &qeth_ethtool_stats_keys,
4584 sizeof(qeth_ethtool_stats_keys));
4585 break;
4586 default:
4587 WARN_ON(1);
4588 break;
4589 }
4590 }
4591 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4592
4593 void qeth_core_get_drvinfo(struct net_device *dev,
4594 struct ethtool_drvinfo *info)
4595 {
4596 struct qeth_card *card = dev->ml_priv;
4597 if (card->options.layer2)
4598 strcpy(info->driver, "qeth_l2");
4599 else
4600 strcpy(info->driver, "qeth_l3");
4601
4602 strcpy(info->version, "1.0");
4603 strcpy(info->fw_version, card->info.mcl_level);
4604 sprintf(info->bus_info, "%s/%s/%s",
4605 CARD_RDEV_ID(card),
4606 CARD_WDEV_ID(card),
4607 CARD_DDEV_ID(card));
4608 }
4609 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4610
4611 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4612 struct ethtool_cmd *ecmd)
4613 {
4614 struct qeth_card *card = netdev->ml_priv;
4615 enum qeth_link_types link_type;
4616
4617 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4618 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4619 else
4620 link_type = card->info.link_type;
4621
4622 ecmd->transceiver = XCVR_INTERNAL;
4623 ecmd->supported = SUPPORTED_Autoneg;
4624 ecmd->advertising = ADVERTISED_Autoneg;
4625 ecmd->duplex = DUPLEX_FULL;
4626 ecmd->autoneg = AUTONEG_ENABLE;
4627
4628 switch (link_type) {
4629 case QETH_LINK_TYPE_FAST_ETH:
4630 case QETH_LINK_TYPE_LANE_ETH100:
4631 ecmd->supported |= SUPPORTED_10baseT_Half |
4632 SUPPORTED_10baseT_Full |
4633 SUPPORTED_100baseT_Half |
4634 SUPPORTED_100baseT_Full |
4635 SUPPORTED_TP;
4636 ecmd->advertising |= ADVERTISED_10baseT_Half |
4637 ADVERTISED_10baseT_Full |
4638 ADVERTISED_100baseT_Half |
4639 ADVERTISED_100baseT_Full |
4640 ADVERTISED_TP;
4641 ecmd->speed = SPEED_100;
4642 ecmd->port = PORT_TP;
4643 break;
4644
4645 case QETH_LINK_TYPE_GBIT_ETH:
4646 case QETH_LINK_TYPE_LANE_ETH1000:
4647 ecmd->supported |= SUPPORTED_10baseT_Half |
4648 SUPPORTED_10baseT_Full |
4649 SUPPORTED_100baseT_Half |
4650 SUPPORTED_100baseT_Full |
4651 SUPPORTED_1000baseT_Half |
4652 SUPPORTED_1000baseT_Full |
4653 SUPPORTED_FIBRE;
4654 ecmd->advertising |= ADVERTISED_10baseT_Half |
4655 ADVERTISED_10baseT_Full |
4656 ADVERTISED_100baseT_Half |
4657 ADVERTISED_100baseT_Full |
4658 ADVERTISED_1000baseT_Half |
4659 ADVERTISED_1000baseT_Full |
4660 ADVERTISED_FIBRE;
4661 ecmd->speed = SPEED_1000;
4662 ecmd->port = PORT_FIBRE;
4663 break;
4664
4665 case QETH_LINK_TYPE_10GBIT_ETH:
4666 ecmd->supported |= SUPPORTED_10baseT_Half |
4667 SUPPORTED_10baseT_Full |
4668 SUPPORTED_100baseT_Half |
4669 SUPPORTED_100baseT_Full |
4670 SUPPORTED_1000baseT_Half |
4671 SUPPORTED_1000baseT_Full |
4672 SUPPORTED_10000baseT_Full |
4673 SUPPORTED_FIBRE;
4674 ecmd->advertising |= ADVERTISED_10baseT_Half |
4675 ADVERTISED_10baseT_Full |
4676 ADVERTISED_100baseT_Half |
4677 ADVERTISED_100baseT_Full |
4678 ADVERTISED_1000baseT_Half |
4679 ADVERTISED_1000baseT_Full |
4680 ADVERTISED_10000baseT_Full |
4681 ADVERTISED_FIBRE;
4682 ecmd->speed = SPEED_10000;
4683 ecmd->port = PORT_FIBRE;
4684 break;
4685
4686 default:
4687 ecmd->supported |= SUPPORTED_10baseT_Half |
4688 SUPPORTED_10baseT_Full |
4689 SUPPORTED_TP;
4690 ecmd->advertising |= ADVERTISED_10baseT_Half |
4691 ADVERTISED_10baseT_Full |
4692 ADVERTISED_TP;
4693 ecmd->speed = SPEED_10;
4694 ecmd->port = PORT_TP;
4695 }
4696
4697 return 0;
4698 }
4699 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4700
4701 static int __init qeth_core_init(void)
4702 {
4703 int rc;
4704
4705 pr_info("loading core functions\n");
4706 INIT_LIST_HEAD(&qeth_core_card_list.list);
4707 rwlock_init(&qeth_core_card_list.rwlock);
4708
4709 rc = qeth_register_dbf_views();
4710 if (rc)
4711 goto out_err;
4712 rc = ccw_driver_register(&qeth_ccw_driver);
4713 if (rc)
4714 goto ccw_err;
4715 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4716 if (rc)
4717 goto ccwgroup_err;
4718 rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4719 &driver_attr_group);
4720 if (rc)
4721 goto driver_err;
4722 qeth_core_root_dev = root_device_register("qeth");
4723 rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4724 if (rc)
4725 goto register_err;
4726
4727 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4728 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4729 if (!qeth_core_header_cache) {
4730 rc = -ENOMEM;
4731 goto slab_err;
4732 }
4733
4734 return 0;
4735 slab_err:
4736 root_device_unregister(qeth_core_root_dev);
4737 register_err:
4738 driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4739 &driver_attr_group);
4740 driver_err:
4741 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4742 ccwgroup_err:
4743 ccw_driver_unregister(&qeth_ccw_driver);
4744 ccw_err:
4745 QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4746 qeth_unregister_dbf_views();
4747 out_err:
4748 pr_err("Initializing the qeth device driver failed\n");
4749 return rc;
4750 }
4751
4752 static void __exit qeth_core_exit(void)
4753 {
4754 root_device_unregister(qeth_core_root_dev);
4755 driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4756 &driver_attr_group);
4757 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4758 ccw_driver_unregister(&qeth_ccw_driver);
4759 kmem_cache_destroy(qeth_core_header_cache);
4760 qeth_unregister_dbf_views();
4761 pr_info("core functions removed\n");
4762 }
4763
4764 module_init(qeth_core_init);
4765 module_exit(qeth_core_exit);
4766 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4767 MODULE_DESCRIPTION("qeth core functions");
4768 MODULE_LICENSE("GPL");
The kernel tree for Tao Ma.