?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ARM: 7409/1: Do not call flush_cache_user_range with mmap_sem held
[linux/fpc-iii.git] / drivers / s390 / net / qeth_core_main.c
blobdd08f7b42fb8ff26ebf91d943fa58d01376d6184
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 #include <asm/sysinfo.h>
28
29 #include "qeth_core.h"
30
31 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
32 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
33 /* N P A M L V H */
34 [QETH_DBF_SETUP] = {"qeth_setup",
35 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
36 [QETH_DBF_MSG] = {"qeth_msg",
37 8, 1, 128, 3, &debug_sprintf_view, NULL},
38 [QETH_DBF_CTRL] = {"qeth_control",
39 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
40 };
41 EXPORT_SYMBOL_GPL(qeth_dbf);
42
43 struct qeth_card_list_struct qeth_core_card_list;
44 EXPORT_SYMBOL_GPL(qeth_core_card_list);
45 struct kmem_cache *qeth_core_header_cache;
46 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
47
48 static struct device *qeth_core_root_dev;
49 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
50 static struct lock_class_key qdio_out_skb_queue_key;
51
52 static void qeth_send_control_data_cb(struct qeth_channel *,
53 struct qeth_cmd_buffer *);
54 static int qeth_issue_next_read(struct qeth_card *);
55 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
56 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
57 static void qeth_free_buffer_pool(struct qeth_card *);
58 static int qeth_qdio_establish(struct qeth_card *);
59
60
61 static inline const char *qeth_get_cardname(struct qeth_card *card)
62 {
63 if (card->info.guestlan) {
64 switch (card->info.type) {
65 case QETH_CARD_TYPE_OSD:
66 return " Guest LAN QDIO";
67 case QETH_CARD_TYPE_IQD:
68 return " Guest LAN Hiper";
69 case QETH_CARD_TYPE_OSM:
70 return " Guest LAN QDIO - OSM";
71 case QETH_CARD_TYPE_OSX:
72 return " Guest LAN QDIO - OSX";
73 default:
74 return " unknown";
75 }
76 } else {
77 switch (card->info.type) {
78 case QETH_CARD_TYPE_OSD:
79 return " OSD Express";
80 case QETH_CARD_TYPE_IQD:
81 return " HiperSockets";
82 case QETH_CARD_TYPE_OSN:
83 return " OSN QDIO";
84 case QETH_CARD_TYPE_OSM:
85 return " OSM QDIO";
86 case QETH_CARD_TYPE_OSX:
87 return " OSX QDIO";
88 default:
89 return " unknown";
90 }
91 }
92 return " n/a";
93 }
94
95 /* max length to be returned: 14 */
96 const char *qeth_get_cardname_short(struct qeth_card *card)
97 {
98 if (card->info.guestlan) {
99 switch (card->info.type) {
100 case QETH_CARD_TYPE_OSD:
101 return "GuestLAN QDIO";
102 case QETH_CARD_TYPE_IQD:
103 return "GuestLAN Hiper";
104 case QETH_CARD_TYPE_OSM:
105 return "GuestLAN OSM";
106 case QETH_CARD_TYPE_OSX:
107 return "GuestLAN OSX";
108 default:
109 return "unknown";
110 }
111 } else {
112 switch (card->info.type) {
113 case QETH_CARD_TYPE_OSD:
114 switch (card->info.link_type) {
115 case QETH_LINK_TYPE_FAST_ETH:
116 return "OSD_100";
117 case QETH_LINK_TYPE_HSTR:
118 return "HSTR";
119 case QETH_LINK_TYPE_GBIT_ETH:
120 return "OSD_1000";
121 case QETH_LINK_TYPE_10GBIT_ETH:
122 return "OSD_10GIG";
123 case QETH_LINK_TYPE_LANE_ETH100:
124 return "OSD_FE_LANE";
125 case QETH_LINK_TYPE_LANE_TR:
126 return "OSD_TR_LANE";
127 case QETH_LINK_TYPE_LANE_ETH1000:
128 return "OSD_GbE_LANE";
129 case QETH_LINK_TYPE_LANE:
130 return "OSD_ATM_LANE";
131 default:
132 return "OSD_Express";
133 }
134 case QETH_CARD_TYPE_IQD:
135 return "HiperSockets";
136 case QETH_CARD_TYPE_OSN:
137 return "OSN";
138 case QETH_CARD_TYPE_OSM:
139 return "OSM_1000";
140 case QETH_CARD_TYPE_OSX:
141 return "OSX_10GIG";
142 default:
143 return "unknown";
144 }
145 }
146 return "n/a";
147 }
148
149 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
150 int clear_start_mask)
151 {
152 unsigned long flags;
153
154 spin_lock_irqsave(&card->thread_mask_lock, flags);
155 card->thread_allowed_mask = threads;
156 if (clear_start_mask)
157 card->thread_start_mask &= threads;
158 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
159 wake_up(&card->wait_q);
160 }
161 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
162
163 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
164 {
165 unsigned long flags;
166 int rc = 0;
167
168 spin_lock_irqsave(&card->thread_mask_lock, flags);
169 rc = (card->thread_running_mask & threads);
170 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
171 return rc;
172 }
173 EXPORT_SYMBOL_GPL(qeth_threads_running);
174
175 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
176 {
177 return wait_event_interruptible(card->wait_q,
178 qeth_threads_running(card, threads) == 0);
179 }
180 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
181
182 void qeth_clear_working_pool_list(struct qeth_card *card)
183 {
184 struct qeth_buffer_pool_entry *pool_entry, *tmp;
185
186 QETH_CARD_TEXT(card, 5, "clwrklst");
187 list_for_each_entry_safe(pool_entry, tmp,
188 &card->qdio.in_buf_pool.entry_list, list){
189 list_del(&pool_entry->list);
190 }
191 }
192 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
193
194 static int qeth_alloc_buffer_pool(struct qeth_card *card)
195 {
196 struct qeth_buffer_pool_entry *pool_entry;
197 void *ptr;
198 int i, j;
199
200 QETH_CARD_TEXT(card, 5, "alocpool");
201 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
202 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
203 if (!pool_entry) {
204 qeth_free_buffer_pool(card);
205 return -ENOMEM;
206 }
207 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
208 ptr = (void *) __get_free_page(GFP_KERNEL);
209 if (!ptr) {
210 while (j > 0)
211 free_page((unsigned long)
212 pool_entry->elements[--j]);
213 kfree(pool_entry);
214 qeth_free_buffer_pool(card);
215 return -ENOMEM;
216 }
217 pool_entry->elements[j] = ptr;
218 }
219 list_add(&pool_entry->init_list,
220 &card->qdio.init_pool.entry_list);
221 }
222 return 0;
223 }
224
225 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
226 {
227 QETH_CARD_TEXT(card, 2, "realcbp");
228
229 if ((card->state != CARD_STATE_DOWN) &&
230 (card->state != CARD_STATE_RECOVER))
231 return -EPERM;
232
233 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
234 qeth_clear_working_pool_list(card);
235 qeth_free_buffer_pool(card);
236 card->qdio.in_buf_pool.buf_count = bufcnt;
237 card->qdio.init_pool.buf_count = bufcnt;
238 return qeth_alloc_buffer_pool(card);
239 }
240 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
241
242 static int qeth_issue_next_read(struct qeth_card *card)
243 {
244 int rc;
245 struct qeth_cmd_buffer *iob;
246
247 QETH_CARD_TEXT(card, 5, "issnxrd");
248 if (card->read.state != CH_STATE_UP)
249 return -EIO;
250 iob = qeth_get_buffer(&card->read);
251 if (!iob) {
252 dev_warn(&card->gdev->dev, "The qeth device driver "
253 "failed to recover an error on the device\n");
254 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
255 "available\n", dev_name(&card->gdev->dev));
256 return -ENOMEM;
257 }
258 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
259 QETH_CARD_TEXT(card, 6, "noirqpnd");
260 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
261 (addr_t) iob, 0, 0);
262 if (rc) {
263 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
264 "rc=%i\n", dev_name(&card->gdev->dev), rc);
265 atomic_set(&card->read.irq_pending, 0);
266 card->read_or_write_problem = 1;
267 qeth_schedule_recovery(card);
268 wake_up(&card->wait_q);
269 }
270 return rc;
271 }
272
273 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
274 {
275 struct qeth_reply *reply;
276
277 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
278 if (reply) {
279 atomic_set(&reply->refcnt, 1);
280 atomic_set(&reply->received, 0);
281 reply->card = card;
282 };
283 return reply;
284 }
285
286 static void qeth_get_reply(struct qeth_reply *reply)
287 {
288 WARN_ON(atomic_read(&reply->refcnt) <= 0);
289 atomic_inc(&reply->refcnt);
290 }
291
292 static void qeth_put_reply(struct qeth_reply *reply)
293 {
294 WARN_ON(atomic_read(&reply->refcnt) <= 0);
295 if (atomic_dec_and_test(&reply->refcnt))
296 kfree(reply);
297 }
298
299 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
300 struct qeth_card *card)
301 {
302 char *ipa_name;
303 int com = cmd->hdr.command;
304 ipa_name = qeth_get_ipa_cmd_name(com);
305 if (rc)
306 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
307 "x%X \"%s\"\n",
308 ipa_name, com, dev_name(&card->gdev->dev),
309 QETH_CARD_IFNAME(card), rc,
310 qeth_get_ipa_msg(rc));
311 else
312 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
313 ipa_name, com, dev_name(&card->gdev->dev),
314 QETH_CARD_IFNAME(card));
315 }
316
317 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
318 struct qeth_cmd_buffer *iob)
319 {
320 struct qeth_ipa_cmd *cmd = NULL;
321
322 QETH_CARD_TEXT(card, 5, "chkipad");
323 if (IS_IPA(iob->data)) {
324 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
325 if (IS_IPA_REPLY(cmd)) {
326 if (cmd->hdr.command != IPA_CMD_SETCCID &&
327 cmd->hdr.command != IPA_CMD_DELCCID &&
328 cmd->hdr.command != IPA_CMD_MODCCID &&
329 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
330 qeth_issue_ipa_msg(cmd,
331 cmd->hdr.return_code, card);
332 return cmd;
333 } else {
334 switch (cmd->hdr.command) {
335 case IPA_CMD_STOPLAN:
336 dev_warn(&card->gdev->dev,
337 "The link for interface %s on CHPID"
338 " 0x%X failed\n",
339 QETH_CARD_IFNAME(card),
340 card->info.chpid);
341 card->lan_online = 0;
342 if (card->dev && netif_carrier_ok(card->dev))
343 netif_carrier_off(card->dev);
344 return NULL;
345 case IPA_CMD_STARTLAN:
346 dev_info(&card->gdev->dev,
347 "The link for %s on CHPID 0x%X has"
348 " been restored\n",
349 QETH_CARD_IFNAME(card),
350 card->info.chpid);
351 netif_carrier_on(card->dev);
352 card->lan_online = 1;
353 if (card->info.hwtrap)
354 card->info.hwtrap = 2;
355 qeth_schedule_recovery(card);
356 return NULL;
357 case IPA_CMD_MODCCID:
358 return cmd;
359 case IPA_CMD_REGISTER_LOCAL_ADDR:
360 QETH_CARD_TEXT(card, 3, "irla");
361 break;
362 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
363 QETH_CARD_TEXT(card, 3, "urla");
364 break;
365 default:
366 QETH_DBF_MESSAGE(2, "Received data is IPA "
367 "but not a reply!\n");
368 break;
369 }
370 }
371 }
372 return cmd;
373 }
374
375 void qeth_clear_ipacmd_list(struct qeth_card *card)
376 {
377 struct qeth_reply *reply, *r;
378 unsigned long flags;
379
380 QETH_CARD_TEXT(card, 4, "clipalst");
381
382 spin_lock_irqsave(&card->lock, flags);
383 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
384 qeth_get_reply(reply);
385 reply->rc = -EIO;
386 atomic_inc(&reply->received);
387 list_del_init(&reply->list);
388 wake_up(&reply->wait_q);
389 qeth_put_reply(reply);
390 }
391 spin_unlock_irqrestore(&card->lock, flags);
392 atomic_set(&card->write.irq_pending, 0);
393 }
394 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
395
396 static int qeth_check_idx_response(struct qeth_card *card,
397 unsigned char *buffer)
398 {
399 if (!buffer)
400 return 0;
401
402 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
403 if ((buffer[2] & 0xc0) == 0xc0) {
404 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
405 "with cause code 0x%02x%s\n",
406 buffer[4],
407 ((buffer[4] == 0x22) ?
408 " -- try another portname" : ""));
409 QETH_CARD_TEXT(card, 2, "ckidxres");
410 QETH_CARD_TEXT(card, 2, " idxterm");
411 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
412 if (buffer[4] == 0xf6) {
413 dev_err(&card->gdev->dev,
414 "The qeth device is not configured "
415 "for the OSI layer required by z/VM\n");
416 return -EPERM;
417 }
418 return -EIO;
419 }
420 return 0;
421 }
422
423 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
424 __u32 len)
425 {
426 struct qeth_card *card;
427
428 card = CARD_FROM_CDEV(channel->ccwdev);
429 QETH_CARD_TEXT(card, 4, "setupccw");
430 if (channel == &card->read)
431 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
432 else
433 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
434 channel->ccw.count = len;
435 channel->ccw.cda = (__u32) __pa(iob);
436 }
437
438 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
439 {
440 __u8 index;
441
442 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
443 index = channel->io_buf_no;
444 do {
445 if (channel->iob[index].state == BUF_STATE_FREE) {
446 channel->iob[index].state = BUF_STATE_LOCKED;
447 channel->io_buf_no = (channel->io_buf_no + 1) %
448 QETH_CMD_BUFFER_NO;
449 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
450 return channel->iob + index;
451 }
452 index = (index + 1) % QETH_CMD_BUFFER_NO;
453 } while (index != channel->io_buf_no);
454
455 return NULL;
456 }
457
458 void qeth_release_buffer(struct qeth_channel *channel,
459 struct qeth_cmd_buffer *iob)
460 {
461 unsigned long flags;
462
463 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
464 spin_lock_irqsave(&channel->iob_lock, flags);
465 memset(iob->data, 0, QETH_BUFSIZE);
466 iob->state = BUF_STATE_FREE;
467 iob->callback = qeth_send_control_data_cb;
468 iob->rc = 0;
469 spin_unlock_irqrestore(&channel->iob_lock, flags);
470 }
471 EXPORT_SYMBOL_GPL(qeth_release_buffer);
472
473 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
474 {
475 struct qeth_cmd_buffer *buffer = NULL;
476 unsigned long flags;
477
478 spin_lock_irqsave(&channel->iob_lock, flags);
479 buffer = __qeth_get_buffer(channel);
480 spin_unlock_irqrestore(&channel->iob_lock, flags);
481 return buffer;
482 }
483
484 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
485 {
486 struct qeth_cmd_buffer *buffer;
487 wait_event(channel->wait_q,
488 ((buffer = qeth_get_buffer(channel)) != NULL));
489 return buffer;
490 }
491 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
492
493 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
494 {
495 int cnt;
496
497 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
498 qeth_release_buffer(channel, &channel->iob[cnt]);
499 channel->buf_no = 0;
500 channel->io_buf_no = 0;
501 }
502 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
503
504 static void qeth_send_control_data_cb(struct qeth_channel *channel,
505 struct qeth_cmd_buffer *iob)
506 {
507 struct qeth_card *card;
508 struct qeth_reply *reply, *r;
509 struct qeth_ipa_cmd *cmd;
510 unsigned long flags;
511 int keep_reply;
512 int rc = 0;
513
514 card = CARD_FROM_CDEV(channel->ccwdev);
515 QETH_CARD_TEXT(card, 4, "sndctlcb");
516 rc = qeth_check_idx_response(card, iob->data);
517 switch (rc) {
518 case 0:
519 break;
520 case -EIO:
521 qeth_clear_ipacmd_list(card);
522 qeth_schedule_recovery(card);
523 /* fall through */
524 default:
525 goto out;
526 }
527
528 cmd = qeth_check_ipa_data(card, iob);
529 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
530 goto out;
531 /*in case of OSN : check if cmd is set */
532 if (card->info.type == QETH_CARD_TYPE_OSN &&
533 cmd &&
534 cmd->hdr.command != IPA_CMD_STARTLAN &&
535 card->osn_info.assist_cb != NULL) {
536 card->osn_info.assist_cb(card->dev, cmd);
537 goto out;
538 }
539
540 spin_lock_irqsave(&card->lock, flags);
541 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
542 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
543 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
544 qeth_get_reply(reply);
545 list_del_init(&reply->list);
546 spin_unlock_irqrestore(&card->lock, flags);
547 keep_reply = 0;
548 if (reply->callback != NULL) {
549 if (cmd) {
550 reply->offset = (__u16)((char *)cmd -
551 (char *)iob->data);
552 keep_reply = reply->callback(card,
553 reply,
554 (unsigned long)cmd);
555 } else
556 keep_reply = reply->callback(card,
557 reply,
558 (unsigned long)iob);
559 }
560 if (cmd)
561 reply->rc = (u16) cmd->hdr.return_code;
562 else if (iob->rc)
563 reply->rc = iob->rc;
564 if (keep_reply) {
565 spin_lock_irqsave(&card->lock, flags);
566 list_add_tail(&reply->list,
567 &card->cmd_waiter_list);
568 spin_unlock_irqrestore(&card->lock, flags);
569 } else {
570 atomic_inc(&reply->received);
571 wake_up(&reply->wait_q);
572 }
573 qeth_put_reply(reply);
574 goto out;
575 }
576 }
577 spin_unlock_irqrestore(&card->lock, flags);
578 out:
579 memcpy(&card->seqno.pdu_hdr_ack,
580 QETH_PDU_HEADER_SEQ_NO(iob->data),
581 QETH_SEQ_NO_LENGTH);
582 qeth_release_buffer(channel, iob);
583 }
584
585 static int qeth_setup_channel(struct qeth_channel *channel)
586 {
587 int cnt;
588
589 QETH_DBF_TEXT(SETUP, 2, "setupch");
590 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
591 channel->iob[cnt].data =
592 kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
593 if (channel->iob[cnt].data == NULL)
594 break;
595 channel->iob[cnt].state = BUF_STATE_FREE;
596 channel->iob[cnt].channel = channel;
597 channel->iob[cnt].callback = qeth_send_control_data_cb;
598 channel->iob[cnt].rc = 0;
599 }
600 if (cnt < QETH_CMD_BUFFER_NO) {
601 while (cnt-- > 0)
602 kfree(channel->iob[cnt].data);
603 return -ENOMEM;
604 }
605 channel->buf_no = 0;
606 channel->io_buf_no = 0;
607 atomic_set(&channel->irq_pending, 0);
608 spin_lock_init(&channel->iob_lock);
609
610 init_waitqueue_head(&channel->wait_q);
611 return 0;
612 }
613
614 static int qeth_set_thread_start_bit(struct qeth_card *card,
615 unsigned long thread)
616 {
617 unsigned long flags;
618
619 spin_lock_irqsave(&card->thread_mask_lock, flags);
620 if (!(card->thread_allowed_mask & thread) ||
621 (card->thread_start_mask & thread)) {
622 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
623 return -EPERM;
624 }
625 card->thread_start_mask |= thread;
626 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
627 return 0;
628 }
629
630 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
631 {
632 unsigned long flags;
633
634 spin_lock_irqsave(&card->thread_mask_lock, flags);
635 card->thread_start_mask &= ~thread;
636 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
637 wake_up(&card->wait_q);
638 }
639 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
640
641 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
642 {
643 unsigned long flags;
644
645 spin_lock_irqsave(&card->thread_mask_lock, flags);
646 card->thread_running_mask &= ~thread;
647 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
648 wake_up(&card->wait_q);
649 }
650 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
651
652 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
653 {
654 unsigned long flags;
655 int rc = 0;
656
657 spin_lock_irqsave(&card->thread_mask_lock, flags);
658 if (card->thread_start_mask & thread) {
659 if ((card->thread_allowed_mask & thread) &&
660 !(card->thread_running_mask & thread)) {
661 rc = 1;
662 card->thread_start_mask &= ~thread;
663 card->thread_running_mask |= thread;
664 } else
665 rc = -EPERM;
666 }
667 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
668 return rc;
669 }
670
671 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
672 {
673 int rc = 0;
674
675 wait_event(card->wait_q,
676 (rc = __qeth_do_run_thread(card, thread)) >= 0);
677 return rc;
678 }
679 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
680
681 void qeth_schedule_recovery(struct qeth_card *card)
682 {
683 QETH_CARD_TEXT(card, 2, "startrec");
684 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
685 schedule_work(&card->kernel_thread_starter);
686 }
687 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
688
689 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
690 {
691 int dstat, cstat;
692 char *sense;
693 struct qeth_card *card;
694
695 sense = (char *) irb->ecw;
696 cstat = irb->scsw.cmd.cstat;
697 dstat = irb->scsw.cmd.dstat;
698 card = CARD_FROM_CDEV(cdev);
699
700 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
701 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
702 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
703 QETH_CARD_TEXT(card, 2, "CGENCHK");
704 dev_warn(&cdev->dev, "The qeth device driver "
705 "failed to recover an error on the device\n");
706 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
707 dev_name(&cdev->dev), dstat, cstat);
708 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
709 16, 1, irb, 64, 1);
710 return 1;
711 }
712
713 if (dstat & DEV_STAT_UNIT_CHECK) {
714 if (sense[SENSE_RESETTING_EVENT_BYTE] &
715 SENSE_RESETTING_EVENT_FLAG) {
716 QETH_CARD_TEXT(card, 2, "REVIND");
717 return 1;
718 }
719 if (sense[SENSE_COMMAND_REJECT_BYTE] &
720 SENSE_COMMAND_REJECT_FLAG) {
721 QETH_CARD_TEXT(card, 2, "CMDREJi");
722 return 1;
723 }
724 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
725 QETH_CARD_TEXT(card, 2, "AFFE");
726 return 1;
727 }
728 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
729 QETH_CARD_TEXT(card, 2, "ZEROSEN");
730 return 0;
731 }
732 QETH_CARD_TEXT(card, 2, "DGENCHK");
733 return 1;
734 }
735 return 0;
736 }
737
738 static long __qeth_check_irb_error(struct ccw_device *cdev,
739 unsigned long intparm, struct irb *irb)
740 {
741 struct qeth_card *card;
742
743 card = CARD_FROM_CDEV(cdev);
744
745 if (!IS_ERR(irb))
746 return 0;
747
748 switch (PTR_ERR(irb)) {
749 case -EIO:
750 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
751 dev_name(&cdev->dev));
752 QETH_CARD_TEXT(card, 2, "ckirberr");
753 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
754 break;
755 case -ETIMEDOUT:
756 dev_warn(&cdev->dev, "A hardware operation timed out"
757 " on the device\n");
758 QETH_CARD_TEXT(card, 2, "ckirberr");
759 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
760 if (intparm == QETH_RCD_PARM) {
761 if (card && (card->data.ccwdev == cdev)) {
762 card->data.state = CH_STATE_DOWN;
763 wake_up(&card->wait_q);
764 }
765 }
766 break;
767 default:
768 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
769 dev_name(&cdev->dev), PTR_ERR(irb));
770 QETH_CARD_TEXT(card, 2, "ckirberr");
771 QETH_CARD_TEXT(card, 2, " rc???");
772 }
773 return PTR_ERR(irb);
774 }
775
776 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
777 struct irb *irb)
778 {
779 int rc;
780 int cstat, dstat;
781 struct qeth_cmd_buffer *buffer;
782 struct qeth_channel *channel;
783 struct qeth_card *card;
784 struct qeth_cmd_buffer *iob;
785 __u8 index;
786
787 if (__qeth_check_irb_error(cdev, intparm, irb))
788 return;
789 cstat = irb->scsw.cmd.cstat;
790 dstat = irb->scsw.cmd.dstat;
791
792 card = CARD_FROM_CDEV(cdev);
793 if (!card)
794 return;
795
796 QETH_CARD_TEXT(card, 5, "irq");
797
798 if (card->read.ccwdev == cdev) {
799 channel = &card->read;
800 QETH_CARD_TEXT(card, 5, "read");
801 } else if (card->write.ccwdev == cdev) {
802 channel = &card->write;
803 QETH_CARD_TEXT(card, 5, "write");
804 } else {
805 channel = &card->data;
806 QETH_CARD_TEXT(card, 5, "data");
807 }
808 atomic_set(&channel->irq_pending, 0);
809
810 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
811 channel->state = CH_STATE_STOPPED;
812
813 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
814 channel->state = CH_STATE_HALTED;
815
816 /*let's wake up immediately on data channel*/
817 if ((channel == &card->data) && (intparm != 0) &&
818 (intparm != QETH_RCD_PARM))
819 goto out;
820
821 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
822 QETH_CARD_TEXT(card, 6, "clrchpar");
823 /* we don't have to handle this further */
824 intparm = 0;
825 }
826 if (intparm == QETH_HALT_CHANNEL_PARM) {
827 QETH_CARD_TEXT(card, 6, "hltchpar");
828 /* we don't have to handle this further */
829 intparm = 0;
830 }
831 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
832 (dstat & DEV_STAT_UNIT_CHECK) ||
833 (cstat)) {
834 if (irb->esw.esw0.erw.cons) {
835 dev_warn(&channel->ccwdev->dev,
836 "The qeth device driver failed to recover "
837 "an error on the device\n");
838 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
839 "0x%X dstat 0x%X\n",
840 dev_name(&channel->ccwdev->dev), cstat, dstat);
841 print_hex_dump(KERN_WARNING, "qeth: irb ",
842 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
843 print_hex_dump(KERN_WARNING, "qeth: sense data ",
844 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
845 }
846 if (intparm == QETH_RCD_PARM) {
847 channel->state = CH_STATE_DOWN;
848 goto out;
849 }
850 rc = qeth_get_problem(cdev, irb);
851 if (rc) {
852 qeth_clear_ipacmd_list(card);
853 qeth_schedule_recovery(card);
854 goto out;
855 }
856 }
857
858 if (intparm == QETH_RCD_PARM) {
859 channel->state = CH_STATE_RCD_DONE;
860 goto out;
861 }
862 if (intparm) {
863 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
864 buffer->state = BUF_STATE_PROCESSED;
865 }
866 if (channel == &card->data)
867 return;
868 if (channel == &card->read &&
869 channel->state == CH_STATE_UP)
870 qeth_issue_next_read(card);
871
872 iob = channel->iob;
873 index = channel->buf_no;
874 while (iob[index].state == BUF_STATE_PROCESSED) {
875 if (iob[index].callback != NULL)
876 iob[index].callback(channel, iob + index);
877
878 index = (index + 1) % QETH_CMD_BUFFER_NO;
879 }
880 channel->buf_no = index;
881 out:
882 wake_up(&card->wait_q);
883 return;
884 }
885
886 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
887 struct qeth_qdio_out_buffer *buf)
888 {
889 int i;
890 struct sk_buff *skb;
891
892 /* is PCI flag set on buffer? */
893 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
894 atomic_dec(&queue->set_pci_flags_count);
895
896 skb = skb_dequeue(&buf->skb_list);
897 while (skb) {
898 atomic_dec(&skb->users);
899 dev_kfree_skb_any(skb);
900 skb = skb_dequeue(&buf->skb_list);
901 }
902 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
903 if (buf->buffer->element[i].addr && buf->is_header[i])
904 kmem_cache_free(qeth_core_header_cache,
905 buf->buffer->element[i].addr);
906 buf->is_header[i] = 0;
907 buf->buffer->element[i].length = 0;
908 buf->buffer->element[i].addr = NULL;
909 buf->buffer->element[i].eflags = 0;
910 buf->buffer->element[i].sflags = 0;
911 }
912 buf->buffer->element[15].eflags = 0;
913 buf->buffer->element[15].sflags = 0;
914 buf->next_element_to_fill = 0;
915 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
916 }
917
918 void qeth_clear_qdio_buffers(struct qeth_card *card)
919 {
920 int i, j;
921
922 QETH_CARD_TEXT(card, 2, "clearqdbf");
923 /* clear outbound buffers to free skbs */
924 for (i = 0; i < card->qdio.no_out_queues; ++i)
925 if (card->qdio.out_qs[i]) {
926 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
927 qeth_clear_output_buffer(card->qdio.out_qs[i],
928 &card->qdio.out_qs[i]->bufs[j]);
929 }
930 }
931 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
932
933 static void qeth_free_buffer_pool(struct qeth_card *card)
934 {
935 struct qeth_buffer_pool_entry *pool_entry, *tmp;
936 int i = 0;
937 list_for_each_entry_safe(pool_entry, tmp,
938 &card->qdio.init_pool.entry_list, init_list){
939 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
940 free_page((unsigned long)pool_entry->elements[i]);
941 list_del(&pool_entry->init_list);
942 kfree(pool_entry);
943 }
944 }
945
946 static void qeth_free_qdio_buffers(struct qeth_card *card)
947 {
948 int i, j;
949
950 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
951 QETH_QDIO_UNINITIALIZED)
952 return;
953 kfree(card->qdio.in_q);
954 card->qdio.in_q = NULL;
955 /* inbound buffer pool */
956 qeth_free_buffer_pool(card);
957 /* free outbound qdio_qs */
958 if (card->qdio.out_qs) {
959 for (i = 0; i < card->qdio.no_out_queues; ++i) {
960 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
961 qeth_clear_output_buffer(card->qdio.out_qs[i],
962 &card->qdio.out_qs[i]->bufs[j]);
963 kfree(card->qdio.out_qs[i]);
964 }
965 kfree(card->qdio.out_qs);
966 card->qdio.out_qs = NULL;
967 }
968 }
969
970 static void qeth_clean_channel(struct qeth_channel *channel)
971 {
972 int cnt;
973
974 QETH_DBF_TEXT(SETUP, 2, "freech");
975 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
976 kfree(channel->iob[cnt].data);
977 }
978
979 static void qeth_get_channel_path_desc(struct qeth_card *card)
980 {
981 struct ccw_device *ccwdev;
982 struct channelPath_dsc {
983 u8 flags;
984 u8 lsn;
985 u8 desc;
986 u8 chpid;
987 u8 swla;
988 u8 zeroes;
989 u8 chla;
990 u8 chpp;
991 } *chp_dsc;
992
993 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
994
995 ccwdev = card->data.ccwdev;
996 chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
997 if (chp_dsc != NULL) {
998 /* CHPP field bit 6 == 1 -> single queue */
999 if ((chp_dsc->chpp & 0x02) == 0x02) {
1000 if ((atomic_read(&card->qdio.state) !=
1001 QETH_QDIO_UNINITIALIZED) &&
1002 (card->qdio.no_out_queues == 4))
1003 /* change from 4 to 1 outbound queues */
1004 qeth_free_qdio_buffers(card);
1005 card->qdio.no_out_queues = 1;
1006 if (card->qdio.default_out_queue != 0)
1007 dev_info(&card->gdev->dev,
1008 "Priority Queueing not supported\n");
1009 card->qdio.default_out_queue = 0;
1010 } else {
1011 if ((atomic_read(&card->qdio.state) !=
1012 QETH_QDIO_UNINITIALIZED) &&
1013 (card->qdio.no_out_queues == 1)) {
1014 /* change from 1 to 4 outbound queues */
1015 qeth_free_qdio_buffers(card);
1016 card->qdio.default_out_queue = 2;
1017 }
1018 card->qdio.no_out_queues = 4;
1019 }
1020 card->info.func_level = 0x4100 + chp_dsc->desc;
1021 kfree(chp_dsc);
1022 }
1023 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1024 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1025 return;
1026 }
1027
1028 static void qeth_init_qdio_info(struct qeth_card *card)
1029 {
1030 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1031 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1032 /* inbound */
1033 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1034 if (card->info.type == QETH_CARD_TYPE_IQD)
1035 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1036 else
1037 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1038 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1039 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1040 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1041 }
1042
1043 static void qeth_set_intial_options(struct qeth_card *card)
1044 {
1045 card->options.route4.type = NO_ROUTER;
1046 card->options.route6.type = NO_ROUTER;
1047 card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1048 card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1049 card->options.fake_broadcast = 0;
1050 card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1051 card->options.performance_stats = 0;
1052 card->options.rx_sg_cb = QETH_RX_SG_CB;
1053 card->options.isolation = ISOLATION_MODE_NONE;
1054 }
1055
1056 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1057 {
1058 unsigned long flags;
1059 int rc = 0;
1060
1061 spin_lock_irqsave(&card->thread_mask_lock, flags);
1062 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1063 (u8) card->thread_start_mask,
1064 (u8) card->thread_allowed_mask,
1065 (u8) card->thread_running_mask);
1066 rc = (card->thread_start_mask & thread);
1067 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1068 return rc;
1069 }
1070
1071 static void qeth_start_kernel_thread(struct work_struct *work)
1072 {
1073 struct qeth_card *card = container_of(work, struct qeth_card,
1074 kernel_thread_starter);
1075 QETH_CARD_TEXT(card , 2, "strthrd");
1076
1077 if (card->read.state != CH_STATE_UP &&
1078 card->write.state != CH_STATE_UP)
1079 return;
1080 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1081 kthread_run(card->discipline.recover, (void *) card,
1082 "qeth_recover");
1083 }
1084
1085 static int qeth_setup_card(struct qeth_card *card)
1086 {
1087
1088 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1089 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1090
1091 card->read.state = CH_STATE_DOWN;
1092 card->write.state = CH_STATE_DOWN;
1093 card->data.state = CH_STATE_DOWN;
1094 card->state = CARD_STATE_DOWN;
1095 card->lan_online = 0;
1096 card->read_or_write_problem = 0;
1097 card->dev = NULL;
1098 spin_lock_init(&card->vlanlock);
1099 spin_lock_init(&card->mclock);
1100 card->vlangrp = NULL;
1101 spin_lock_init(&card->lock);
1102 spin_lock_init(&card->ip_lock);
1103 spin_lock_init(&card->thread_mask_lock);
1104 mutex_init(&card->conf_mutex);
1105 mutex_init(&card->discipline_mutex);
1106 card->thread_start_mask = 0;
1107 card->thread_allowed_mask = 0;
1108 card->thread_running_mask = 0;
1109 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1110 INIT_LIST_HEAD(&card->ip_list);
1111 INIT_LIST_HEAD(card->ip_tbd_list);
1112 INIT_LIST_HEAD(&card->cmd_waiter_list);
1113 init_waitqueue_head(&card->wait_q);
1114 /* initial options */
1115 qeth_set_intial_options(card);
1116 /* IP address takeover */
1117 INIT_LIST_HEAD(&card->ipato.entries);
1118 card->ipato.enabled = 0;
1119 card->ipato.invert4 = 0;
1120 card->ipato.invert6 = 0;
1121 /* init QDIO stuff */
1122 qeth_init_qdio_info(card);
1123 return 0;
1124 }
1125
1126 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1127 {
1128 struct qeth_card *card = container_of(slr, struct qeth_card,
1129 qeth_service_level);
1130 if (card->info.mcl_level[0])
1131 seq_printf(m, "qeth: %s firmware level %s\n",
1132 CARD_BUS_ID(card), card->info.mcl_level);
1133 }
1134
1135 static struct qeth_card *qeth_alloc_card(void)
1136 {
1137 struct qeth_card *card;
1138
1139 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1140 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1141 if (!card)
1142 goto out;
1143 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1144 card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1145 if (!card->ip_tbd_list) {
1146 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1147 goto out_card;
1148 }
1149 if (qeth_setup_channel(&card->read))
1150 goto out_ip;
1151 if (qeth_setup_channel(&card->write))
1152 goto out_channel;
1153 card->options.layer2 = -1;
1154 card->qeth_service_level.seq_print = qeth_core_sl_print;
1155 register_service_level(&card->qeth_service_level);
1156 return card;
1157
1158 out_channel:
1159 qeth_clean_channel(&card->read);
1160 out_ip:
1161 kfree(card->ip_tbd_list);
1162 out_card:
1163 kfree(card);
1164 out:
1165 return NULL;
1166 }
1167
1168 static int qeth_determine_card_type(struct qeth_card *card)
1169 {
1170 int i = 0;
1171
1172 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1173
1174 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1175 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1176 while (known_devices[i][QETH_DEV_MODEL_IND]) {
1177 if ((CARD_RDEV(card)->id.dev_type ==
1178 known_devices[i][QETH_DEV_TYPE_IND]) &&
1179 (CARD_RDEV(card)->id.dev_model ==
1180 known_devices[i][QETH_DEV_MODEL_IND])) {
1181 card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1182 card->qdio.no_out_queues =
1183 known_devices[i][QETH_QUEUE_NO_IND];
1184 card->info.is_multicast_different =
1185 known_devices[i][QETH_MULTICAST_IND];
1186 qeth_get_channel_path_desc(card);
1187 return 0;
1188 }
1189 i++;
1190 }
1191 card->info.type = QETH_CARD_TYPE_UNKNOWN;
1192 dev_err(&card->gdev->dev, "The adapter hardware is of an "
1193 "unknown type\n");
1194 return -ENOENT;
1195 }
1196
1197 static int qeth_clear_channel(struct qeth_channel *channel)
1198 {
1199 unsigned long flags;
1200 struct qeth_card *card;
1201 int rc;
1202
1203 card = CARD_FROM_CDEV(channel->ccwdev);
1204 QETH_CARD_TEXT(card, 3, "clearch");
1205 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1206 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1207 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1208
1209 if (rc)
1210 return rc;
1211 rc = wait_event_interruptible_timeout(card->wait_q,
1212 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1213 if (rc == -ERESTARTSYS)
1214 return rc;
1215 if (channel->state != CH_STATE_STOPPED)
1216 return -ETIME;
1217 channel->state = CH_STATE_DOWN;
1218 return 0;
1219 }
1220
1221 static int qeth_halt_channel(struct qeth_channel *channel)
1222 {
1223 unsigned long flags;
1224 struct qeth_card *card;
1225 int rc;
1226
1227 card = CARD_FROM_CDEV(channel->ccwdev);
1228 QETH_CARD_TEXT(card, 3, "haltch");
1229 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1230 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1231 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1232
1233 if (rc)
1234 return rc;
1235 rc = wait_event_interruptible_timeout(card->wait_q,
1236 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1237 if (rc == -ERESTARTSYS)
1238 return rc;
1239 if (channel->state != CH_STATE_HALTED)
1240 return -ETIME;
1241 return 0;
1242 }
1243
1244 static int qeth_halt_channels(struct qeth_card *card)
1245 {
1246 int rc1 = 0, rc2 = 0, rc3 = 0;
1247
1248 QETH_CARD_TEXT(card, 3, "haltchs");
1249 rc1 = qeth_halt_channel(&card->read);
1250 rc2 = qeth_halt_channel(&card->write);
1251 rc3 = qeth_halt_channel(&card->data);
1252 if (rc1)
1253 return rc1;
1254 if (rc2)
1255 return rc2;
1256 return rc3;
1257 }
1258
1259 static int qeth_clear_channels(struct qeth_card *card)
1260 {
1261 int rc1 = 0, rc2 = 0, rc3 = 0;
1262
1263 QETH_CARD_TEXT(card, 3, "clearchs");
1264 rc1 = qeth_clear_channel(&card->read);
1265 rc2 = qeth_clear_channel(&card->write);
1266 rc3 = qeth_clear_channel(&card->data);
1267 if (rc1)
1268 return rc1;
1269 if (rc2)
1270 return rc2;
1271 return rc3;
1272 }
1273
1274 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1275 {
1276 int rc = 0;
1277
1278 QETH_CARD_TEXT(card, 3, "clhacrd");
1279
1280 if (halt)
1281 rc = qeth_halt_channels(card);
1282 if (rc)
1283 return rc;
1284 return qeth_clear_channels(card);
1285 }
1286
1287 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1288 {
1289 int rc = 0;
1290
1291 QETH_CARD_TEXT(card, 3, "qdioclr");
1292 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1293 QETH_QDIO_CLEANING)) {
1294 case QETH_QDIO_ESTABLISHED:
1295 if (card->info.type == QETH_CARD_TYPE_IQD)
1296 rc = qdio_shutdown(CARD_DDEV(card),
1297 QDIO_FLAG_CLEANUP_USING_HALT);
1298 else
1299 rc = qdio_shutdown(CARD_DDEV(card),
1300 QDIO_FLAG_CLEANUP_USING_CLEAR);
1301 if (rc)
1302 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1303 qdio_free(CARD_DDEV(card));
1304 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1305 break;
1306 case QETH_QDIO_CLEANING:
1307 return rc;
1308 default:
1309 break;
1310 }
1311 rc = qeth_clear_halt_card(card, use_halt);
1312 if (rc)
1313 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1314 card->state = CARD_STATE_DOWN;
1315 return rc;
1316 }
1317 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1318
1319 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1320 int *length)
1321 {
1322 struct ciw *ciw;
1323 char *rcd_buf;
1324 int ret;
1325 struct qeth_channel *channel = &card->data;
1326 unsigned long flags;
1327
1328 /*
1329 * scan for RCD command in extended SenseID data
1330 */
1331 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1332 if (!ciw || ciw->cmd == 0)
1333 return -EOPNOTSUPP;
1334 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1335 if (!rcd_buf)
1336 return -ENOMEM;
1337
1338 channel->ccw.cmd_code = ciw->cmd;
1339 channel->ccw.cda = (__u32) __pa(rcd_buf);
1340 channel->ccw.count = ciw->count;
1341 channel->ccw.flags = CCW_FLAG_SLI;
1342 channel->state = CH_STATE_RCD;
1343 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1344 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1345 QETH_RCD_PARM, LPM_ANYPATH, 0,
1346 QETH_RCD_TIMEOUT);
1347 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1348 if (!ret)
1349 wait_event(card->wait_q,
1350 (channel->state == CH_STATE_RCD_DONE ||
1351 channel->state == CH_STATE_DOWN));
1352 if (channel->state == CH_STATE_DOWN)
1353 ret = -EIO;
1354 else
1355 channel->state = CH_STATE_DOWN;
1356 if (ret) {
1357 kfree(rcd_buf);
1358 *buffer = NULL;
1359 *length = 0;
1360 } else {
1361 *length = ciw->count;
1362 *buffer = rcd_buf;
1363 }
1364 return ret;
1365 }
1366
1367 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1368 {
1369 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1370 card->info.chpid = prcd[30];
1371 card->info.unit_addr2 = prcd[31];
1372 card->info.cula = prcd[63];
1373 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1374 (prcd[0x11] == _ascebc['M']));
1375 }
1376
1377 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1378 {
1379 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1380
1381 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) {
1382 card->info.blkt.time_total = 250;
1383 card->info.blkt.inter_packet = 5;
1384 card->info.blkt.inter_packet_jumbo = 15;
1385 } else {
1386 card->info.blkt.time_total = 0;
1387 card->info.blkt.inter_packet = 0;
1388 card->info.blkt.inter_packet_jumbo = 0;
1389 }
1390 }
1391
1392 static void qeth_init_tokens(struct qeth_card *card)
1393 {
1394 card->token.issuer_rm_w = 0x00010103UL;
1395 card->token.cm_filter_w = 0x00010108UL;
1396 card->token.cm_connection_w = 0x0001010aUL;
1397 card->token.ulp_filter_w = 0x0001010bUL;
1398 card->token.ulp_connection_w = 0x0001010dUL;
1399 }
1400
1401 static void qeth_init_func_level(struct qeth_card *card)
1402 {
1403 switch (card->info.type) {
1404 case QETH_CARD_TYPE_IQD:
1405 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1406 break;
1407 case QETH_CARD_TYPE_OSD:
1408 case QETH_CARD_TYPE_OSN:
1409 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1410 break;
1411 default:
1412 break;
1413 }
1414 }
1415
1416 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1417 void (*idx_reply_cb)(struct qeth_channel *,
1418 struct qeth_cmd_buffer *))
1419 {
1420 struct qeth_cmd_buffer *iob;
1421 unsigned long flags;
1422 int rc;
1423 struct qeth_card *card;
1424
1425 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1426 card = CARD_FROM_CDEV(channel->ccwdev);
1427 iob = qeth_get_buffer(channel);
1428 iob->callback = idx_reply_cb;
1429 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1430 channel->ccw.count = QETH_BUFSIZE;
1431 channel->ccw.cda = (__u32) __pa(iob->data);
1432
1433 wait_event(card->wait_q,
1434 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1435 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1436 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1437 rc = ccw_device_start(channel->ccwdev,
1438 &channel->ccw, (addr_t) iob, 0, 0);
1439 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1440
1441 if (rc) {
1442 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1443 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1444 atomic_set(&channel->irq_pending, 0);
1445 wake_up(&card->wait_q);
1446 return rc;
1447 }
1448 rc = wait_event_interruptible_timeout(card->wait_q,
1449 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1450 if (rc == -ERESTARTSYS)
1451 return rc;
1452 if (channel->state != CH_STATE_UP) {
1453 rc = -ETIME;
1454 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1455 qeth_clear_cmd_buffers(channel);
1456 } else
1457 rc = 0;
1458 return rc;
1459 }
1460
1461 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1462 void (*idx_reply_cb)(struct qeth_channel *,
1463 struct qeth_cmd_buffer *))
1464 {
1465 struct qeth_card *card;
1466 struct qeth_cmd_buffer *iob;
1467 unsigned long flags;
1468 __u16 temp;
1469 __u8 tmp;
1470 int rc;
1471 struct ccw_dev_id temp_devid;
1472
1473 card = CARD_FROM_CDEV(channel->ccwdev);
1474
1475 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1476
1477 iob = qeth_get_buffer(channel);
1478 iob->callback = idx_reply_cb;
1479 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1480 channel->ccw.count = IDX_ACTIVATE_SIZE;
1481 channel->ccw.cda = (__u32) __pa(iob->data);
1482 if (channel == &card->write) {
1483 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1484 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1485 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1486 card->seqno.trans_hdr++;
1487 } else {
1488 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1489 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1490 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1491 }
1492 tmp = ((__u8)card->info.portno) | 0x80;
1493 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1494 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1495 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1496 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1497 &card->info.func_level, sizeof(__u16));
1498 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1499 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1500 temp = (card->info.cula << 8) + card->info.unit_addr2;
1501 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1502
1503 wait_event(card->wait_q,
1504 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1505 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1506 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1507 rc = ccw_device_start(channel->ccwdev,
1508 &channel->ccw, (addr_t) iob, 0, 0);
1509 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1510
1511 if (rc) {
1512 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1513 rc);
1514 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1515 atomic_set(&channel->irq_pending, 0);
1516 wake_up(&card->wait_q);
1517 return rc;
1518 }
1519 rc = wait_event_interruptible_timeout(card->wait_q,
1520 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1521 if (rc == -ERESTARTSYS)
1522 return rc;
1523 if (channel->state != CH_STATE_ACTIVATING) {
1524 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1525 " failed to recover an error on the device\n");
1526 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1527 dev_name(&channel->ccwdev->dev));
1528 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1529 qeth_clear_cmd_buffers(channel);
1530 return -ETIME;
1531 }
1532 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1533 }
1534
1535 static int qeth_peer_func_level(int level)
1536 {
1537 if ((level & 0xff) == 8)
1538 return (level & 0xff) + 0x400;
1539 if (((level >> 8) & 3) == 1)
1540 return (level & 0xff) + 0x200;
1541 return level;
1542 }
1543
1544 static void qeth_idx_write_cb(struct qeth_channel *channel,
1545 struct qeth_cmd_buffer *iob)
1546 {
1547 struct qeth_card *card;
1548 __u16 temp;
1549
1550 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1551
1552 if (channel->state == CH_STATE_DOWN) {
1553 channel->state = CH_STATE_ACTIVATING;
1554 goto out;
1555 }
1556 card = CARD_FROM_CDEV(channel->ccwdev);
1557
1558 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1559 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1560 dev_err(&card->write.ccwdev->dev,
1561 "The adapter is used exclusively by another "
1562 "host\n");
1563 else
1564 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1565 " negative reply\n",
1566 dev_name(&card->write.ccwdev->dev));
1567 goto out;
1568 }
1569 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1570 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1571 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1572 "function level mismatch (sent: 0x%x, received: "
1573 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1574 card->info.func_level, temp);
1575 goto out;
1576 }
1577 channel->state = CH_STATE_UP;
1578 out:
1579 qeth_release_buffer(channel, iob);
1580 }
1581
1582 static void qeth_idx_read_cb(struct qeth_channel *channel,
1583 struct qeth_cmd_buffer *iob)
1584 {
1585 struct qeth_card *card;
1586 __u16 temp;
1587
1588 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1589 if (channel->state == CH_STATE_DOWN) {
1590 channel->state = CH_STATE_ACTIVATING;
1591 goto out;
1592 }
1593
1594 card = CARD_FROM_CDEV(channel->ccwdev);
1595 if (qeth_check_idx_response(card, iob->data))
1596 goto out;
1597
1598 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1599 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1600 case QETH_IDX_ACT_ERR_EXCL:
1601 dev_err(&card->write.ccwdev->dev,
1602 "The adapter is used exclusively by another "
1603 "host\n");
1604 break;
1605 case QETH_IDX_ACT_ERR_AUTH:
1606 case QETH_IDX_ACT_ERR_AUTH_USER:
1607 dev_err(&card->read.ccwdev->dev,
1608 "Setting the device online failed because of "
1609 "insufficient authorization\n");
1610 break;
1611 default:
1612 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1613 " negative reply\n",
1614 dev_name(&card->read.ccwdev->dev));
1615 }
1616 QETH_CARD_TEXT_(card, 2, "idxread%c",
1617 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1618 goto out;
1619 }
1620
1621 /**
1622 * * temporary fix for microcode bug
1623 * * to revert it,replace OR by AND
1624 * */
1625 if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1626 (card->info.type == QETH_CARD_TYPE_OSD))
1627 card->info.portname_required = 1;
1628
1629 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1630 if (temp != qeth_peer_func_level(card->info.func_level)) {
1631 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1632 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1633 dev_name(&card->read.ccwdev->dev),
1634 card->info.func_level, temp);
1635 goto out;
1636 }
1637 memcpy(&card->token.issuer_rm_r,
1638 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1639 QETH_MPC_TOKEN_LENGTH);
1640 memcpy(&card->info.mcl_level[0],
1641 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1642 channel->state = CH_STATE_UP;
1643 out:
1644 qeth_release_buffer(channel, iob);
1645 }
1646
1647 void qeth_prepare_control_data(struct qeth_card *card, int len,
1648 struct qeth_cmd_buffer *iob)
1649 {
1650 qeth_setup_ccw(&card->write, iob->data, len);
1651 iob->callback = qeth_release_buffer;
1652
1653 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1654 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1655 card->seqno.trans_hdr++;
1656 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1657 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1658 card->seqno.pdu_hdr++;
1659 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1660 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1661 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1662 }
1663 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1664
1665 int qeth_send_control_data(struct qeth_card *card, int len,
1666 struct qeth_cmd_buffer *iob,
1667 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1668 unsigned long),
1669 void *reply_param)
1670 {
1671 int rc;
1672 unsigned long flags;
1673 struct qeth_reply *reply = NULL;
1674 unsigned long timeout, event_timeout;
1675 struct qeth_ipa_cmd *cmd;
1676
1677 QETH_CARD_TEXT(card, 2, "sendctl");
1678
1679 if (card->read_or_write_problem) {
1680 qeth_release_buffer(iob->channel, iob);
1681 return -EIO;
1682 }
1683 reply = qeth_alloc_reply(card);
1684 if (!reply) {
1685 return -ENOMEM;
1686 }
1687 reply->callback = reply_cb;
1688 reply->param = reply_param;
1689 if (card->state == CARD_STATE_DOWN)
1690 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1691 else
1692 reply->seqno = card->seqno.ipa++;
1693 init_waitqueue_head(&reply->wait_q);
1694 spin_lock_irqsave(&card->lock, flags);
1695 list_add_tail(&reply->list, &card->cmd_waiter_list);
1696 spin_unlock_irqrestore(&card->lock, flags);
1697 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1698
1699 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1700 qeth_prepare_control_data(card, len, iob);
1701
1702 if (IS_IPA(iob->data))
1703 event_timeout = QETH_IPA_TIMEOUT;
1704 else
1705 event_timeout = QETH_TIMEOUT;
1706 timeout = jiffies + event_timeout;
1707
1708 QETH_CARD_TEXT(card, 6, "noirqpnd");
1709 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1710 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1711 (addr_t) iob, 0, 0);
1712 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1713 if (rc) {
1714 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1715 "ccw_device_start rc = %i\n",
1716 dev_name(&card->write.ccwdev->dev), rc);
1717 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1718 spin_lock_irqsave(&card->lock, flags);
1719 list_del_init(&reply->list);
1720 qeth_put_reply(reply);
1721 spin_unlock_irqrestore(&card->lock, flags);
1722 qeth_release_buffer(iob->channel, iob);
1723 atomic_set(&card->write.irq_pending, 0);
1724 wake_up(&card->wait_q);
1725 return rc;
1726 }
1727
1728 /* we have only one long running ipassist, since we can ensure
1729 process context of this command we can sleep */
1730 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1731 if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1732 (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1733 if (!wait_event_timeout(reply->wait_q,
1734 atomic_read(&reply->received), event_timeout))
1735 goto time_err;
1736 } else {
1737 while (!atomic_read(&reply->received)) {
1738 if (time_after(jiffies, timeout))
1739 goto time_err;
1740 cpu_relax();
1741 };
1742 }
1743
1744 if (reply->rc == -EIO)
1745 goto error;
1746 rc = reply->rc;
1747 qeth_put_reply(reply);
1748 return rc;
1749
1750 time_err:
1751 reply->rc = -ETIME;
1752 spin_lock_irqsave(&reply->card->lock, flags);
1753 list_del_init(&reply->list);
1754 spin_unlock_irqrestore(&reply->card->lock, flags);
1755 atomic_inc(&reply->received);
1756 error:
1757 atomic_set(&card->write.irq_pending, 0);
1758 qeth_release_buffer(iob->channel, iob);
1759 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
1760 rc = reply->rc;
1761 qeth_put_reply(reply);
1762 return rc;
1763 }
1764 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1765
1766 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1767 unsigned long data)
1768 {
1769 struct qeth_cmd_buffer *iob;
1770
1771 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1772
1773 iob = (struct qeth_cmd_buffer *) data;
1774 memcpy(&card->token.cm_filter_r,
1775 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1776 QETH_MPC_TOKEN_LENGTH);
1777 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1778 return 0;
1779 }
1780
1781 static int qeth_cm_enable(struct qeth_card *card)
1782 {
1783 int rc;
1784 struct qeth_cmd_buffer *iob;
1785
1786 QETH_DBF_TEXT(SETUP, 2, "cmenable");
1787
1788 iob = qeth_wait_for_buffer(&card->write);
1789 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1790 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1791 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1792 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1793 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1794
1795 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1796 qeth_cm_enable_cb, NULL);
1797 return rc;
1798 }
1799
1800 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1801 unsigned long data)
1802 {
1803
1804 struct qeth_cmd_buffer *iob;
1805
1806 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1807
1808 iob = (struct qeth_cmd_buffer *) data;
1809 memcpy(&card->token.cm_connection_r,
1810 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1811 QETH_MPC_TOKEN_LENGTH);
1812 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1813 return 0;
1814 }
1815
1816 static int qeth_cm_setup(struct qeth_card *card)
1817 {
1818 int rc;
1819 struct qeth_cmd_buffer *iob;
1820
1821 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1822
1823 iob = qeth_wait_for_buffer(&card->write);
1824 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1825 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1826 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1827 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1828 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1829 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1830 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1831 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1832 qeth_cm_setup_cb, NULL);
1833 return rc;
1834
1835 }
1836
1837 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1838 {
1839 switch (card->info.type) {
1840 case QETH_CARD_TYPE_UNKNOWN:
1841 return 1500;
1842 case QETH_CARD_TYPE_IQD:
1843 return card->info.max_mtu;
1844 case QETH_CARD_TYPE_OSD:
1845 switch (card->info.link_type) {
1846 case QETH_LINK_TYPE_HSTR:
1847 case QETH_LINK_TYPE_LANE_TR:
1848 return 2000;
1849 default:
1850 return 1492;
1851 }
1852 case QETH_CARD_TYPE_OSM:
1853 case QETH_CARD_TYPE_OSX:
1854 return 1492;
1855 default:
1856 return 1500;
1857 }
1858 }
1859
1860 static inline int qeth_get_mtu_outof_framesize(int framesize)
1861 {
1862 switch (framesize) {
1863 case 0x4000:
1864 return 8192;
1865 case 0x6000:
1866 return 16384;
1867 case 0xa000:
1868 return 32768;
1869 case 0xffff:
1870 return 57344;
1871 default:
1872 return 0;
1873 }
1874 }
1875
1876 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1877 {
1878 switch (card->info.type) {
1879 case QETH_CARD_TYPE_OSD:
1880 case QETH_CARD_TYPE_OSM:
1881 case QETH_CARD_TYPE_OSX:
1882 case QETH_CARD_TYPE_IQD:
1883 return ((mtu >= 576) &&
1884 (mtu <= card->info.max_mtu));
1885 case QETH_CARD_TYPE_OSN:
1886 case QETH_CARD_TYPE_UNKNOWN:
1887 default:
1888 return 1;
1889 }
1890 }
1891
1892 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1893 unsigned long data)
1894 {
1895
1896 __u16 mtu, framesize;
1897 __u16 len;
1898 __u8 link_type;
1899 struct qeth_cmd_buffer *iob;
1900
1901 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1902
1903 iob = (struct qeth_cmd_buffer *) data;
1904 memcpy(&card->token.ulp_filter_r,
1905 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1906 QETH_MPC_TOKEN_LENGTH);
1907 if (card->info.type == QETH_CARD_TYPE_IQD) {
1908 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1909 mtu = qeth_get_mtu_outof_framesize(framesize);
1910 if (!mtu) {
1911 iob->rc = -EINVAL;
1912 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1913 return 0;
1914 }
1915 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
1916 /* frame size has changed */
1917 if (card->dev &&
1918 ((card->dev->mtu == card->info.initial_mtu) ||
1919 (card->dev->mtu > mtu)))
1920 card->dev->mtu = mtu;
1921 qeth_free_qdio_buffers(card);
1922 }
1923 card->info.initial_mtu = mtu;
1924 card->info.max_mtu = mtu;
1925 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1926 } else {
1927 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1928 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
1929 iob->data);
1930 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1931 }
1932
1933 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1934 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1935 memcpy(&link_type,
1936 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1937 card->info.link_type = link_type;
1938 } else
1939 card->info.link_type = 0;
1940 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
1941 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1942 return 0;
1943 }
1944
1945 static int qeth_ulp_enable(struct qeth_card *card)
1946 {
1947 int rc;
1948 char prot_type;
1949 struct qeth_cmd_buffer *iob;
1950
1951 /*FIXME: trace view callbacks*/
1952 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1953
1954 iob = qeth_wait_for_buffer(&card->write);
1955 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1956
1957 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1958 (__u8) card->info.portno;
1959 if (card->options.layer2)
1960 if (card->info.type == QETH_CARD_TYPE_OSN)
1961 prot_type = QETH_PROT_OSN2;
1962 else
1963 prot_type = QETH_PROT_LAYER2;
1964 else
1965 prot_type = QETH_PROT_TCPIP;
1966
1967 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1968 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1969 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1970 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1971 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1972 memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1973 card->info.portname, 9);
1974 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1975 qeth_ulp_enable_cb, NULL);
1976 return rc;
1977
1978 }
1979
1980 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1981 unsigned long data)
1982 {
1983 struct qeth_cmd_buffer *iob;
1984 int rc = 0;
1985
1986 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1987
1988 iob = (struct qeth_cmd_buffer *) data;
1989 memcpy(&card->token.ulp_connection_r,
1990 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1991 QETH_MPC_TOKEN_LENGTH);
1992 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1993 3)) {
1994 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
1995 dev_err(&card->gdev->dev, "A connection could not be "
1996 "established because of an OLM limit\n");
1997 iob->rc = -EMLINK;
1998 }
1999 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2000 return rc;
2001 }
2002
2003 static int qeth_ulp_setup(struct qeth_card *card)
2004 {
2005 int rc;
2006 __u16 temp;
2007 struct qeth_cmd_buffer *iob;
2008 struct ccw_dev_id dev_id;
2009
2010 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2011
2012 iob = qeth_wait_for_buffer(&card->write);
2013 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2014
2015 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2016 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2017 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2018 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2019 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2020 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2021
2022 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2023 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2024 temp = (card->info.cula << 8) + card->info.unit_addr2;
2025 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2026 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2027 qeth_ulp_setup_cb, NULL);
2028 return rc;
2029 }
2030
2031 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2032 {
2033 int i, j;
2034
2035 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2036
2037 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2038 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2039 return 0;
2040
2041 card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2042 GFP_KERNEL);
2043 if (!card->qdio.in_q)
2044 goto out_nomem;
2045 QETH_DBF_TEXT(SETUP, 2, "inq");
2046 QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2047 memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2048 /* give inbound qeth_qdio_buffers their qdio_buffers */
2049 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2050 card->qdio.in_q->bufs[i].buffer =
2051 &card->qdio.in_q->qdio_bufs[i];
2052 /* inbound buffer pool */
2053 if (qeth_alloc_buffer_pool(card))
2054 goto out_freeinq;
2055 /* outbound */
2056 card->qdio.out_qs =
2057 kmalloc(card->qdio.no_out_queues *
2058 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2059 if (!card->qdio.out_qs)
2060 goto out_freepool;
2061 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2062 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2063 GFP_KERNEL);
2064 if (!card->qdio.out_qs[i])
2065 goto out_freeoutq;
2066 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2067 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2068 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2069 card->qdio.out_qs[i]->queue_no = i;
2070 /* give outbound qeth_qdio_buffers their qdio_buffers */
2071 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2072 card->qdio.out_qs[i]->bufs[j].buffer =
2073 &card->qdio.out_qs[i]->qdio_bufs[j];
2074 skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2075 skb_list);
2076 lockdep_set_class(
2077 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2078 &qdio_out_skb_queue_key);
2079 INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2080 }
2081 }
2082 return 0;
2083
2084 out_freeoutq:
2085 while (i > 0)
2086 kfree(card->qdio.out_qs[--i]);
2087 kfree(card->qdio.out_qs);
2088 card->qdio.out_qs = NULL;
2089 out_freepool:
2090 qeth_free_buffer_pool(card);
2091 out_freeinq:
2092 kfree(card->qdio.in_q);
2093 card->qdio.in_q = NULL;
2094 out_nomem:
2095 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2096 return -ENOMEM;
2097 }
2098
2099 static void qeth_create_qib_param_field(struct qeth_card *card,
2100 char *param_field)
2101 {
2102
2103 param_field[0] = _ascebc['P'];
2104 param_field[1] = _ascebc['C'];
2105 param_field[2] = _ascebc['I'];
2106 param_field[3] = _ascebc['T'];
2107 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2108 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2109 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2110 }
2111
2112 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2113 char *param_field)
2114 {
2115 param_field[16] = _ascebc['B'];
2116 param_field[17] = _ascebc['L'];
2117 param_field[18] = _ascebc['K'];
2118 param_field[19] = _ascebc['T'];
2119 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2120 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2121 *((unsigned int *) (&param_field[28])) =
2122 card->info.blkt.inter_packet_jumbo;
2123 }
2124
2125 static int qeth_qdio_activate(struct qeth_card *card)
2126 {
2127 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2128 return qdio_activate(CARD_DDEV(card));
2129 }
2130
2131 static int qeth_dm_act(struct qeth_card *card)
2132 {
2133 int rc;
2134 struct qeth_cmd_buffer *iob;
2135
2136 QETH_DBF_TEXT(SETUP, 2, "dmact");
2137
2138 iob = qeth_wait_for_buffer(&card->write);
2139 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2140
2141 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2142 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2143 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2144 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2145 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2146 return rc;
2147 }
2148
2149 static int qeth_mpc_initialize(struct qeth_card *card)
2150 {
2151 int rc;
2152
2153 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2154
2155 rc = qeth_issue_next_read(card);
2156 if (rc) {
2157 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2158 return rc;
2159 }
2160 rc = qeth_cm_enable(card);
2161 if (rc) {
2162 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2163 goto out_qdio;
2164 }
2165 rc = qeth_cm_setup(card);
2166 if (rc) {
2167 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2168 goto out_qdio;
2169 }
2170 rc = qeth_ulp_enable(card);
2171 if (rc) {
2172 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2173 goto out_qdio;
2174 }
2175 rc = qeth_ulp_setup(card);
2176 if (rc) {
2177 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2178 goto out_qdio;
2179 }
2180 rc = qeth_alloc_qdio_buffers(card);
2181 if (rc) {
2182 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2183 goto out_qdio;
2184 }
2185 rc = qeth_qdio_establish(card);
2186 if (rc) {
2187 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2188 qeth_free_qdio_buffers(card);
2189 goto out_qdio;
2190 }
2191 rc = qeth_qdio_activate(card);
2192 if (rc) {
2193 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2194 goto out_qdio;
2195 }
2196 rc = qeth_dm_act(card);
2197 if (rc) {
2198 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2199 goto out_qdio;
2200 }
2201
2202 return 0;
2203 out_qdio:
2204 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2205 return rc;
2206 }
2207
2208 static void qeth_print_status_with_portname(struct qeth_card *card)
2209 {
2210 char dbf_text[15];
2211 int i;
2212
2213 sprintf(dbf_text, "%s", card->info.portname + 1);
2214 for (i = 0; i < 8; i++)
2215 dbf_text[i] =
2216 (char) _ebcasc[(__u8) dbf_text[i]];
2217 dbf_text[8] = 0;
2218 dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2219 "with link type %s (portname: %s)\n",
2220 qeth_get_cardname(card),
2221 (card->info.mcl_level[0]) ? " (level: " : "",
2222 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2223 (card->info.mcl_level[0]) ? ")" : "",
2224 qeth_get_cardname_short(card),
2225 dbf_text);
2226
2227 }
2228
2229 static void qeth_print_status_no_portname(struct qeth_card *card)
2230 {
2231 if (card->info.portname[0])
2232 dev_info(&card->gdev->dev, "Device is a%s "
2233 "card%s%s%s\nwith link type %s "
2234 "(no portname needed by interface).\n",
2235 qeth_get_cardname(card),
2236 (card->info.mcl_level[0]) ? " (level: " : "",
2237 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2238 (card->info.mcl_level[0]) ? ")" : "",
2239 qeth_get_cardname_short(card));
2240 else
2241 dev_info(&card->gdev->dev, "Device is a%s "
2242 "card%s%s%s\nwith link type %s.\n",
2243 qeth_get_cardname(card),
2244 (card->info.mcl_level[0]) ? " (level: " : "",
2245 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2246 (card->info.mcl_level[0]) ? ")" : "",
2247 qeth_get_cardname_short(card));
2248 }
2249
2250 void qeth_print_status_message(struct qeth_card *card)
2251 {
2252 switch (card->info.type) {
2253 case QETH_CARD_TYPE_OSD:
2254 case QETH_CARD_TYPE_OSM:
2255 case QETH_CARD_TYPE_OSX:
2256 /* VM will use a non-zero first character
2257 * to indicate a HiperSockets like reporting
2258 * of the level OSA sets the first character to zero
2259 * */
2260 if (!card->info.mcl_level[0]) {
2261 sprintf(card->info.mcl_level, "%02x%02x",
2262 card->info.mcl_level[2],
2263 card->info.mcl_level[3]);
2264
2265 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2266 break;
2267 }
2268 /* fallthrough */
2269 case QETH_CARD_TYPE_IQD:
2270 if ((card->info.guestlan) ||
2271 (card->info.mcl_level[0] & 0x80)) {
2272 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2273 card->info.mcl_level[0]];
2274 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2275 card->info.mcl_level[1]];
2276 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2277 card->info.mcl_level[2]];
2278 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2279 card->info.mcl_level[3]];
2280 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2281 }
2282 break;
2283 default:
2284 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2285 }
2286 if (card->info.portname_required)
2287 qeth_print_status_with_portname(card);
2288 else
2289 qeth_print_status_no_portname(card);
2290 }
2291 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2292
2293 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2294 {
2295 struct qeth_buffer_pool_entry *entry;
2296
2297 QETH_CARD_TEXT(card, 5, "inwrklst");
2298
2299 list_for_each_entry(entry,
2300 &card->qdio.init_pool.entry_list, init_list) {
2301 qeth_put_buffer_pool_entry(card, entry);
2302 }
2303 }
2304
2305 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2306 struct qeth_card *card)
2307 {
2308 struct list_head *plh;
2309 struct qeth_buffer_pool_entry *entry;
2310 int i, free;
2311 struct page *page;
2312
2313 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2314 return NULL;
2315
2316 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2317 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2318 free = 1;
2319 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2320 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2321 free = 0;
2322 break;
2323 }
2324 }
2325 if (free) {
2326 list_del_init(&entry->list);
2327 return entry;
2328 }
2329 }
2330
2331 /* no free buffer in pool so take first one and swap pages */
2332 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2333 struct qeth_buffer_pool_entry, list);
2334 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2335 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2336 page = alloc_page(GFP_ATOMIC);
2337 if (!page) {
2338 return NULL;
2339 } else {
2340 free_page((unsigned long)entry->elements[i]);
2341 entry->elements[i] = page_address(page);
2342 if (card->options.performance_stats)
2343 card->perf_stats.sg_alloc_page_rx++;
2344 }
2345 }
2346 }
2347 list_del_init(&entry->list);
2348 return entry;
2349 }
2350
2351 static int qeth_init_input_buffer(struct qeth_card *card,
2352 struct qeth_qdio_buffer *buf)
2353 {
2354 struct qeth_buffer_pool_entry *pool_entry;
2355 int i;
2356
2357 pool_entry = qeth_find_free_buffer_pool_entry(card);
2358 if (!pool_entry)
2359 return 1;
2360
2361 /*
2362 * since the buffer is accessed only from the input_tasklet
2363 * there shouldn't be a need to synchronize; also, since we use
2364 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2365 * buffers
2366 */
2367
2368 buf->pool_entry = pool_entry;
2369 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2370 buf->buffer->element[i].length = PAGE_SIZE;
2371 buf->buffer->element[i].addr = pool_entry->elements[i];
2372 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2373 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2374 else
2375 buf->buffer->element[i].eflags = 0;
2376 buf->buffer->element[i].sflags = 0;
2377 }
2378 return 0;
2379 }
2380
2381 int qeth_init_qdio_queues(struct qeth_card *card)
2382 {
2383 int i, j;
2384 int rc;
2385
2386 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2387
2388 /* inbound queue */
2389 memset(card->qdio.in_q->qdio_bufs, 0,
2390 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2391 qeth_initialize_working_pool_list(card);
2392 /*give only as many buffers to hardware as we have buffer pool entries*/
2393 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2394 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2395 card->qdio.in_q->next_buf_to_init =
2396 card->qdio.in_buf_pool.buf_count - 1;
2397 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2398 card->qdio.in_buf_pool.buf_count - 1);
2399 if (rc) {
2400 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2401 return rc;
2402 }
2403 /* outbound queue */
2404 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2405 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2406 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2407 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2408 qeth_clear_output_buffer(card->qdio.out_qs[i],
2409 &card->qdio.out_qs[i]->bufs[j]);
2410 }
2411 card->qdio.out_qs[i]->card = card;
2412 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2413 card->qdio.out_qs[i]->do_pack = 0;
2414 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2415 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2416 atomic_set(&card->qdio.out_qs[i]->state,
2417 QETH_OUT_Q_UNLOCKED);
2418 }
2419 return 0;
2420 }
2421 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2422
2423 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2424 {
2425 switch (link_type) {
2426 case QETH_LINK_TYPE_HSTR:
2427 return 2;
2428 default:
2429 return 1;
2430 }
2431 }
2432
2433 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2434 struct qeth_ipa_cmd *cmd, __u8 command,
2435 enum qeth_prot_versions prot)
2436 {
2437 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2438 cmd->hdr.command = command;
2439 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2440 cmd->hdr.seqno = card->seqno.ipa;
2441 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2442 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2443 if (card->options.layer2)
2444 cmd->hdr.prim_version_no = 2;
2445 else
2446 cmd->hdr.prim_version_no = 1;
2447 cmd->hdr.param_count = 1;
2448 cmd->hdr.prot_version = prot;
2449 cmd->hdr.ipa_supported = 0;
2450 cmd->hdr.ipa_enabled = 0;
2451 }
2452
2453 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2454 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2455 {
2456 struct qeth_cmd_buffer *iob;
2457 struct qeth_ipa_cmd *cmd;
2458
2459 iob = qeth_wait_for_buffer(&card->write);
2460 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2461 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2462
2463 return iob;
2464 }
2465 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2466
2467 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2468 char prot_type)
2469 {
2470 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2471 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2472 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2473 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2474 }
2475 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2476
2477 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2478 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2479 unsigned long),
2480 void *reply_param)
2481 {
2482 int rc;
2483 char prot_type;
2484
2485 QETH_CARD_TEXT(card, 4, "sendipa");
2486
2487 if (card->options.layer2)
2488 if (card->info.type == QETH_CARD_TYPE_OSN)
2489 prot_type = QETH_PROT_OSN2;
2490 else
2491 prot_type = QETH_PROT_LAYER2;
2492 else
2493 prot_type = QETH_PROT_TCPIP;
2494 qeth_prepare_ipa_cmd(card, iob, prot_type);
2495 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2496 iob, reply_cb, reply_param);
2497 if (rc == -ETIME) {
2498 qeth_clear_ipacmd_list(card);
2499 qeth_schedule_recovery(card);
2500 }
2501 return rc;
2502 }
2503 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2504
2505 int qeth_send_startlan(struct qeth_card *card)
2506 {
2507 int rc;
2508 struct qeth_cmd_buffer *iob;
2509
2510 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2511
2512 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2513 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2514 return rc;
2515 }
2516 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2517
2518 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2519 struct qeth_reply *reply, unsigned long data)
2520 {
2521 struct qeth_ipa_cmd *cmd;
2522
2523 QETH_CARD_TEXT(card, 4, "defadpcb");
2524
2525 cmd = (struct qeth_ipa_cmd *) data;
2526 if (cmd->hdr.return_code == 0)
2527 cmd->hdr.return_code =
2528 cmd->data.setadapterparms.hdr.return_code;
2529 return 0;
2530 }
2531 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2532
2533 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2534 struct qeth_reply *reply, unsigned long data)
2535 {
2536 struct qeth_ipa_cmd *cmd;
2537
2538 QETH_CARD_TEXT(card, 3, "quyadpcb");
2539
2540 cmd = (struct qeth_ipa_cmd *) data;
2541 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2542 card->info.link_type =
2543 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2544 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2545 }
2546 card->options.adp.supported_funcs =
2547 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2548 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2549 }
2550
2551 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2552 __u32 command, __u32 cmdlen)
2553 {
2554 struct qeth_cmd_buffer *iob;
2555 struct qeth_ipa_cmd *cmd;
2556
2557 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2558 QETH_PROT_IPV4);
2559 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2560 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2561 cmd->data.setadapterparms.hdr.command_code = command;
2562 cmd->data.setadapterparms.hdr.used_total = 1;
2563 cmd->data.setadapterparms.hdr.seq_no = 1;
2564
2565 return iob;
2566 }
2567 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2568
2569 int qeth_query_setadapterparms(struct qeth_card *card)
2570 {
2571 int rc;
2572 struct qeth_cmd_buffer *iob;
2573
2574 QETH_CARD_TEXT(card, 3, "queryadp");
2575 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2576 sizeof(struct qeth_ipacmd_setadpparms));
2577 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2578 return rc;
2579 }
2580 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2581
2582 static int qeth_query_ipassists_cb(struct qeth_card *card,
2583 struct qeth_reply *reply, unsigned long data)
2584 {
2585 struct qeth_ipa_cmd *cmd;
2586
2587 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2588
2589 cmd = (struct qeth_ipa_cmd *) data;
2590 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2591 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2592 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2593 } else {
2594 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2595 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2596 }
2597 QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2598 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
2599 QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
2600 return 0;
2601 }
2602
2603 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
2604 {
2605 int rc;
2606 struct qeth_cmd_buffer *iob;
2607
2608 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
2609 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
2610 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2611 return rc;
2612 }
2613 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
2614
2615 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2616 struct qeth_reply *reply, unsigned long data)
2617 {
2618 struct qeth_ipa_cmd *cmd;
2619 __u16 rc;
2620
2621 cmd = (struct qeth_ipa_cmd *)data;
2622 rc = cmd->hdr.return_code;
2623 if (rc)
2624 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2625 else
2626 card->info.diagass_support = cmd->data.diagass.ext;
2627 return 0;
2628 }
2629
2630 static int qeth_query_setdiagass(struct qeth_card *card)
2631 {
2632 struct qeth_cmd_buffer *iob;
2633 struct qeth_ipa_cmd *cmd;
2634
2635 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
2636 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2637 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2638 cmd->data.diagass.subcmd_len = 16;
2639 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
2640 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2641 }
2642
2643 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2644 {
2645 unsigned long info = get_zeroed_page(GFP_KERNEL);
2646 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2647 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2648 struct ccw_dev_id ccwid;
2649 int level, rc;
2650
2651 tid->chpid = card->info.chpid;
2652 ccw_device_get_id(CARD_RDEV(card), &ccwid);
2653 tid->ssid = ccwid.ssid;
2654 tid->devno = ccwid.devno;
2655 if (!info)
2656 return;
2657
2658 rc = stsi(NULL, 0, 0, 0);
2659 if (rc == -ENOSYS)
2660 level = rc;
2661 else
2662 level = (((unsigned int) rc) >> 28);
2663
2664 if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
2665 tid->lparnr = info222->lpar_number;
2666
2667 if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
2668 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
2669 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
2670 }
2671 free_page(info);
2672 return;
2673 }
2674
2675 static int qeth_hw_trap_cb(struct qeth_card *card,
2676 struct qeth_reply *reply, unsigned long data)
2677 {
2678 struct qeth_ipa_cmd *cmd;
2679 __u16 rc;
2680
2681 cmd = (struct qeth_ipa_cmd *)data;
2682 rc = cmd->hdr.return_code;
2683 if (rc)
2684 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
2685 return 0;
2686 }
2687
2688 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
2689 {
2690 struct qeth_cmd_buffer *iob;
2691 struct qeth_ipa_cmd *cmd;
2692
2693 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
2694 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
2695 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2696 cmd->data.diagass.subcmd_len = 80;
2697 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
2698 cmd->data.diagass.type = 1;
2699 cmd->data.diagass.action = action;
2700 switch (action) {
2701 case QETH_DIAGS_TRAP_ARM:
2702 cmd->data.diagass.options = 0x0003;
2703 cmd->data.diagass.ext = 0x00010000 +
2704 sizeof(struct qeth_trap_id);
2705 qeth_get_trap_id(card,
2706 (struct qeth_trap_id *)cmd->data.diagass.cdata);
2707 break;
2708 case QETH_DIAGS_TRAP_DISARM:
2709 cmd->data.diagass.options = 0x0001;
2710 break;
2711 case QETH_DIAGS_TRAP_CAPTURE:
2712 break;
2713 }
2714 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
2715 }
2716 EXPORT_SYMBOL_GPL(qeth_hw_trap);
2717
2718 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
2719 unsigned int qdio_error, const char *dbftext)
2720 {
2721 if (qdio_error) {
2722 QETH_CARD_TEXT(card, 2, dbftext);
2723 QETH_CARD_TEXT_(card, 2, " F15=%02X",
2724 buf->element[15].sflags);
2725 QETH_CARD_TEXT_(card, 2, " F14=%02X",
2726 buf->element[14].sflags);
2727 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
2728 if ((buf->element[15].sflags) == 0x12) {
2729 card->stats.rx_dropped++;
2730 return 0;
2731 } else
2732 return 1;
2733 }
2734 return 0;
2735 }
2736 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2737
2738 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2739 {
2740 struct qeth_qdio_q *queue = card->qdio.in_q;
2741 int count;
2742 int i;
2743 int rc;
2744 int newcount = 0;
2745
2746 count = (index < queue->next_buf_to_init)?
2747 card->qdio.in_buf_pool.buf_count -
2748 (queue->next_buf_to_init - index) :
2749 card->qdio.in_buf_pool.buf_count -
2750 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2751 /* only requeue at a certain threshold to avoid SIGAs */
2752 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2753 for (i = queue->next_buf_to_init;
2754 i < queue->next_buf_to_init + count; ++i) {
2755 if (qeth_init_input_buffer(card,
2756 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2757 break;
2758 } else {
2759 newcount++;
2760 }
2761 }
2762
2763 if (newcount < count) {
2764 /* we are in memory shortage so we switch back to
2765 traditional skb allocation and drop packages */
2766 atomic_set(&card->force_alloc_skb, 3);
2767 count = newcount;
2768 } else {
2769 atomic_add_unless(&card->force_alloc_skb, -1, 0);
2770 }
2771
2772 /*
2773 * according to old code it should be avoided to requeue all
2774 * 128 buffers in order to benefit from PCI avoidance.
2775 * this function keeps at least one buffer (the buffer at
2776 * 'index') un-requeued -> this buffer is the first buffer that
2777 * will be requeued the next time
2778 */
2779 if (card->options.performance_stats) {
2780 card->perf_stats.inbound_do_qdio_cnt++;
2781 card->perf_stats.inbound_do_qdio_start_time =
2782 qeth_get_micros();
2783 }
2784 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2785 queue->next_buf_to_init, count);
2786 if (card->options.performance_stats)
2787 card->perf_stats.inbound_do_qdio_time +=
2788 qeth_get_micros() -
2789 card->perf_stats.inbound_do_qdio_start_time;
2790 if (rc) {
2791 dev_warn(&card->gdev->dev,
2792 "QDIO reported an error, rc=%i\n", rc);
2793 QETH_CARD_TEXT(card, 2, "qinberr");
2794 }
2795 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2796 QDIO_MAX_BUFFERS_PER_Q;
2797 }
2798 }
2799 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2800
2801 static int qeth_handle_send_error(struct qeth_card *card,
2802 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2803 {
2804 int sbalf15 = buffer->buffer->element[15].sflags;
2805
2806 QETH_CARD_TEXT(card, 6, "hdsnderr");
2807 if (card->info.type == QETH_CARD_TYPE_IQD) {
2808 if (sbalf15 == 0) {
2809 qdio_err = 0;
2810 } else {
2811 qdio_err = 1;
2812 }
2813 }
2814 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
2815
2816 if (!qdio_err)
2817 return QETH_SEND_ERROR_NONE;
2818
2819 if ((sbalf15 >= 15) && (sbalf15 <= 31))
2820 return QETH_SEND_ERROR_RETRY;
2821
2822 QETH_CARD_TEXT(card, 1, "lnkfail");
2823 QETH_CARD_TEXT_(card, 1, "%04x %02x",
2824 (u16)qdio_err, (u8)sbalf15);
2825 return QETH_SEND_ERROR_LINK_FAILURE;
2826 }
2827
2828 /*
2829 * Switched to packing state if the number of used buffers on a queue
2830 * reaches a certain limit.
2831 */
2832 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2833 {
2834 if (!queue->do_pack) {
2835 if (atomic_read(&queue->used_buffers)
2836 >= QETH_HIGH_WATERMARK_PACK){
2837 /* switch non-PACKING -> PACKING */
2838 QETH_CARD_TEXT(queue->card, 6, "np->pack");
2839 if (queue->card->options.performance_stats)
2840 queue->card->perf_stats.sc_dp_p++;
2841 queue->do_pack = 1;
2842 }
2843 }
2844 }
2845
2846 /*
2847 * Switches from packing to non-packing mode. If there is a packing
2848 * buffer on the queue this buffer will be prepared to be flushed.
2849 * In that case 1 is returned to inform the caller. If no buffer
2850 * has to be flushed, zero is returned.
2851 */
2852 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2853 {
2854 struct qeth_qdio_out_buffer *buffer;
2855 int flush_count = 0;
2856
2857 if (queue->do_pack) {
2858 if (atomic_read(&queue->used_buffers)
2859 <= QETH_LOW_WATERMARK_PACK) {
2860 /* switch PACKING -> non-PACKING */
2861 QETH_CARD_TEXT(queue->card, 6, "pack->np");
2862 if (queue->card->options.performance_stats)
2863 queue->card->perf_stats.sc_p_dp++;
2864 queue->do_pack = 0;
2865 /* flush packing buffers */
2866 buffer = &queue->bufs[queue->next_buf_to_fill];
2867 if ((atomic_read(&buffer->state) ==
2868 QETH_QDIO_BUF_EMPTY) &&
2869 (buffer->next_element_to_fill > 0)) {
2870 atomic_set(&buffer->state,
2871 QETH_QDIO_BUF_PRIMED);
2872 flush_count++;
2873 queue->next_buf_to_fill =
2874 (queue->next_buf_to_fill + 1) %
2875 QDIO_MAX_BUFFERS_PER_Q;
2876 }
2877 }
2878 }
2879 return flush_count;
2880 }
2881
2882 /*
2883 * Called to flush a packing buffer if no more pci flags are on the queue.
2884 * Checks if there is a packing buffer and prepares it to be flushed.
2885 * In that case returns 1, otherwise zero.
2886 */
2887 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2888 {
2889 struct qeth_qdio_out_buffer *buffer;
2890
2891 buffer = &queue->bufs[queue->next_buf_to_fill];
2892 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2893 (buffer->next_element_to_fill > 0)) {
2894 /* it's a packing buffer */
2895 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2896 queue->next_buf_to_fill =
2897 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2898 return 1;
2899 }
2900 return 0;
2901 }
2902
2903 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2904 int count)
2905 {
2906 struct qeth_qdio_out_buffer *buf;
2907 int rc;
2908 int i;
2909 unsigned int qdio_flags;
2910
2911 for (i = index; i < index + count; ++i) {
2912 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2913 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
2914 SBAL_EFLAGS_LAST_ENTRY;
2915
2916 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2917 continue;
2918
2919 if (!queue->do_pack) {
2920 if ((atomic_read(&queue->used_buffers) >=
2921 (QETH_HIGH_WATERMARK_PACK -
2922 QETH_WATERMARK_PACK_FUZZ)) &&
2923 !atomic_read(&queue->set_pci_flags_count)) {
2924 /* it's likely that we'll go to packing
2925 * mode soon */
2926 atomic_inc(&queue->set_pci_flags_count);
2927 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
2928 }
2929 } else {
2930 if (!atomic_read(&queue->set_pci_flags_count)) {
2931 /*
2932 * there's no outstanding PCI any more, so we
2933 * have to request a PCI to be sure the the PCI
2934 * will wake at some time in the future then we
2935 * can flush packed buffers that might still be
2936 * hanging around, which can happen if no
2937 * further send was requested by the stack
2938 */
2939 atomic_inc(&queue->set_pci_flags_count);
2940 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
2941 }
2942 }
2943 }
2944
2945 queue->card->dev->trans_start = jiffies;
2946 if (queue->card->options.performance_stats) {
2947 queue->card->perf_stats.outbound_do_qdio_cnt++;
2948 queue->card->perf_stats.outbound_do_qdio_start_time =
2949 qeth_get_micros();
2950 }
2951 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2952 if (atomic_read(&queue->set_pci_flags_count))
2953 qdio_flags |= QDIO_FLAG_PCI_OUT;
2954 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2955 queue->queue_no, index, count);
2956 if (queue->card->options.performance_stats)
2957 queue->card->perf_stats.outbound_do_qdio_time +=
2958 qeth_get_micros() -
2959 queue->card->perf_stats.outbound_do_qdio_start_time;
2960 atomic_add(count, &queue->used_buffers);
2961 if (rc) {
2962 queue->card->stats.tx_errors += count;
2963 /* ignore temporary SIGA errors without busy condition */
2964 if (rc == QDIO_ERROR_SIGA_TARGET)
2965 return;
2966 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
2967 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
2968
2969 /* this must not happen under normal circumstances. if it
2970 * happens something is really wrong -> recover */
2971 qeth_schedule_recovery(queue->card);
2972 return;
2973 }
2974 if (queue->card->options.performance_stats)
2975 queue->card->perf_stats.bufs_sent += count;
2976 }
2977
2978 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2979 {
2980 int index;
2981 int flush_cnt = 0;
2982 int q_was_packing = 0;
2983
2984 /*
2985 * check if weed have to switch to non-packing mode or if
2986 * we have to get a pci flag out on the queue
2987 */
2988 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2989 !atomic_read(&queue->set_pci_flags_count)) {
2990 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2991 QETH_OUT_Q_UNLOCKED) {
2992 /*
2993 * If we get in here, there was no action in
2994 * do_send_packet. So, we check if there is a
2995 * packing buffer to be flushed here.
2996 */
2997 netif_stop_queue(queue->card->dev);
2998 index = queue->next_buf_to_fill;
2999 q_was_packing = queue->do_pack;
3000 /* queue->do_pack may change */
3001 barrier();
3002 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3003 if (!flush_cnt &&
3004 !atomic_read(&queue->set_pci_flags_count))
3005 flush_cnt +=
3006 qeth_flush_buffers_on_no_pci(queue);
3007 if (queue->card->options.performance_stats &&
3008 q_was_packing)
3009 queue->card->perf_stats.bufs_sent_pack +=
3010 flush_cnt;
3011 if (flush_cnt)
3012 qeth_flush_buffers(queue, index, flush_cnt);
3013 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3014 }
3015 }
3016 }
3017
3018 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3019 unsigned long card_ptr)
3020 {
3021 struct qeth_card *card = (struct qeth_card *)card_ptr;
3022
3023 if (card->dev && (card->dev->flags & IFF_UP))
3024 napi_schedule(&card->napi);
3025 }
3026 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3027
3028 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3029 unsigned int queue, int first_element, int count,
3030 unsigned long card_ptr)
3031 {
3032 struct qeth_card *card = (struct qeth_card *)card_ptr;
3033
3034 if (qdio_err)
3035 qeth_schedule_recovery(card);
3036 }
3037 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3038
3039 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3040 unsigned int qdio_error, int __queue, int first_element,
3041 int count, unsigned long card_ptr)
3042 {
3043 struct qeth_card *card = (struct qeth_card *) card_ptr;
3044 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3045 struct qeth_qdio_out_buffer *buffer;
3046 int i;
3047
3048 QETH_CARD_TEXT(card, 6, "qdouhdl");
3049 if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3050 QETH_CARD_TEXT(card, 2, "achkcond");
3051 netif_stop_queue(card->dev);
3052 qeth_schedule_recovery(card);
3053 return;
3054 }
3055 if (card->options.performance_stats) {
3056 card->perf_stats.outbound_handler_cnt++;
3057 card->perf_stats.outbound_handler_start_time =
3058 qeth_get_micros();
3059 }
3060 for (i = first_element; i < (first_element + count); ++i) {
3061 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
3062 qeth_handle_send_error(card, buffer, qdio_error);
3063 qeth_clear_output_buffer(queue, buffer);
3064 }
3065 atomic_sub(count, &queue->used_buffers);
3066 /* check if we need to do something on this outbound queue */
3067 if (card->info.type != QETH_CARD_TYPE_IQD)
3068 qeth_check_outbound_queue(queue);
3069
3070 netif_wake_queue(queue->card->dev);
3071 if (card->options.performance_stats)
3072 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3073 card->perf_stats.outbound_handler_start_time;
3074 }
3075 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3076
3077 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3078 int ipv, int cast_type)
3079 {
3080 if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3081 card->info.type == QETH_CARD_TYPE_OSX))
3082 return card->qdio.default_out_queue;
3083 switch (card->qdio.no_out_queues) {
3084 case 4:
3085 if (cast_type && card->info.is_multicast_different)
3086 return card->info.is_multicast_different &
3087 (card->qdio.no_out_queues - 1);
3088 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3089 const u8 tos = ip_hdr(skb)->tos;
3090
3091 if (card->qdio.do_prio_queueing ==
3092 QETH_PRIO_Q_ING_TOS) {
3093 if (tos & IP_TOS_NOTIMPORTANT)
3094 return 3;
3095 if (tos & IP_TOS_HIGHRELIABILITY)
3096 return 2;
3097 if (tos & IP_TOS_HIGHTHROUGHPUT)
3098 return 1;
3099 if (tos & IP_TOS_LOWDELAY)
3100 return 0;
3101 }
3102 if (card->qdio.do_prio_queueing ==
3103 QETH_PRIO_Q_ING_PREC)
3104 return 3 - (tos >> 6);
3105 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3106 /* TODO: IPv6!!! */
3107 }
3108 return card->qdio.default_out_queue;
3109 case 1: /* fallthrough for single-out-queue 1920-device */
3110 default:
3111 return card->qdio.default_out_queue;
3112 }
3113 }
3114 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3115
3116 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3117 struct sk_buff *skb, int elems)
3118 {
3119 int dlen = skb->len - skb->data_len;
3120 int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3121 PFN_DOWN((unsigned long)skb->data);
3122
3123 elements_needed += skb_shinfo(skb)->nr_frags;
3124 if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3125 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3126 "(Number=%d / Length=%d). Discarded.\n",
3127 (elements_needed+elems), skb->len);
3128 return 0;
3129 }
3130 return elements_needed;
3131 }
3132 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3133
3134 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
3135 {
3136 int hroom, inpage, rest;
3137
3138 if (((unsigned long)skb->data & PAGE_MASK) !=
3139 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3140 hroom = skb_headroom(skb);
3141 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3142 rest = len - inpage;
3143 if (rest > hroom)
3144 return 1;
3145 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3146 skb->data -= rest;
3147 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3148 }
3149 return 0;
3150 }
3151 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3152
3153 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3154 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3155 int offset)
3156 {
3157 int length = skb->len - skb->data_len;
3158 int length_here;
3159 int element;
3160 char *data;
3161 int first_lap, cnt;
3162 struct skb_frag_struct *frag;
3163
3164 element = *next_element_to_fill;
3165 data = skb->data;
3166 first_lap = (is_tso == 0 ? 1 : 0);
3167
3168 if (offset >= 0) {
3169 data = skb->data + offset;
3170 length -= offset;
3171 first_lap = 0;
3172 }
3173
3174 while (length > 0) {
3175 /* length_here is the remaining amount of data in this page */
3176 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3177 if (length < length_here)
3178 length_here = length;
3179
3180 buffer->element[element].addr = data;
3181 buffer->element[element].length = length_here;
3182 length -= length_here;
3183 if (!length) {
3184 if (first_lap)
3185 if (skb_shinfo(skb)->nr_frags)
3186 buffer->element[element].eflags =
3187 SBAL_EFLAGS_FIRST_FRAG;
3188 else
3189 buffer->element[element].eflags = 0;
3190 else
3191 buffer->element[element].eflags =
3192 SBAL_EFLAGS_MIDDLE_FRAG;
3193 } else {
3194 if (first_lap)
3195 buffer->element[element].eflags =
3196 SBAL_EFLAGS_FIRST_FRAG;
3197 else
3198 buffer->element[element].eflags =
3199 SBAL_EFLAGS_MIDDLE_FRAG;
3200 }
3201 data += length_here;
3202 element++;
3203 first_lap = 0;
3204 }
3205
3206 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3207 frag = &skb_shinfo(skb)->frags[cnt];
3208 buffer->element[element].addr = (char *)page_to_phys(frag->page)
3209 + frag->page_offset;
3210 buffer->element[element].length = frag->size;
3211 buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3212 element++;
3213 }
3214
3215 if (buffer->element[element - 1].eflags)
3216 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3217 *next_element_to_fill = element;
3218 }
3219
3220 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3221 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3222 struct qeth_hdr *hdr, int offset, int hd_len)
3223 {
3224 struct qdio_buffer *buffer;
3225 int flush_cnt = 0, hdr_len, large_send = 0;
3226
3227 buffer = buf->buffer;
3228 atomic_inc(&skb->users);
3229 skb_queue_tail(&buf->skb_list, skb);
3230
3231 /*check first on TSO ....*/
3232 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3233 int element = buf->next_element_to_fill;
3234
3235 hdr_len = sizeof(struct qeth_hdr_tso) +
3236 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3237 /*fill first buffer entry only with header information */
3238 buffer->element[element].addr = skb->data;
3239 buffer->element[element].length = hdr_len;
3240 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3241 buf->next_element_to_fill++;
3242 skb->data += hdr_len;
3243 skb->len -= hdr_len;
3244 large_send = 1;
3245 }
3246
3247 if (offset >= 0) {
3248 int element = buf->next_element_to_fill;
3249 buffer->element[element].addr = hdr;
3250 buffer->element[element].length = sizeof(struct qeth_hdr) +
3251 hd_len;
3252 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3253 buf->is_header[element] = 1;
3254 buf->next_element_to_fill++;
3255 }
3256
3257 __qeth_fill_buffer(skb, buffer, large_send,
3258 (int *)&buf->next_element_to_fill, offset);
3259
3260 if (!queue->do_pack) {
3261 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3262 /* set state to PRIMED -> will be flushed */
3263 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3264 flush_cnt = 1;
3265 } else {
3266 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3267 if (queue->card->options.performance_stats)
3268 queue->card->perf_stats.skbs_sent_pack++;
3269 if (buf->next_element_to_fill >=
3270 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3271 /*
3272 * packed buffer if full -> set state PRIMED
3273 * -> will be flushed
3274 */
3275 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3276 flush_cnt = 1;
3277 }
3278 }
3279 return flush_cnt;
3280 }
3281
3282 int qeth_do_send_packet_fast(struct qeth_card *card,
3283 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3284 struct qeth_hdr *hdr, int elements_needed,
3285 int offset, int hd_len)
3286 {
3287 struct qeth_qdio_out_buffer *buffer;
3288 int index;
3289
3290 /* spin until we get the queue ... */
3291 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3292 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3293 /* ... now we've got the queue */
3294 index = queue->next_buf_to_fill;
3295 buffer = &queue->bufs[queue->next_buf_to_fill];
3296 /*
3297 * check if buffer is empty to make sure that we do not 'overtake'
3298 * ourselves and try to fill a buffer that is already primed
3299 */
3300 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3301 goto out;
3302 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3303 QDIO_MAX_BUFFERS_PER_Q;
3304 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3305 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3306 qeth_flush_buffers(queue, index, 1);
3307 return 0;
3308 out:
3309 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3310 return -EBUSY;
3311 }
3312 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3313
3314 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3315 struct sk_buff *skb, struct qeth_hdr *hdr,
3316 int elements_needed)
3317 {
3318 struct qeth_qdio_out_buffer *buffer;
3319 int start_index;
3320 int flush_count = 0;
3321 int do_pack = 0;
3322 int tmp;
3323 int rc = 0;
3324
3325 /* spin until we get the queue ... */
3326 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3327 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3328 start_index = queue->next_buf_to_fill;
3329 buffer = &queue->bufs[queue->next_buf_to_fill];
3330 /*
3331 * check if buffer is empty to make sure that we do not 'overtake'
3332 * ourselves and try to fill a buffer that is already primed
3333 */
3334 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3335 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3336 return -EBUSY;
3337 }
3338 /* check if we need to switch packing state of this queue */
3339 qeth_switch_to_packing_if_needed(queue);
3340 if (queue->do_pack) {
3341 do_pack = 1;
3342 /* does packet fit in current buffer? */
3343 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3344 buffer->next_element_to_fill) < elements_needed) {
3345 /* ... no -> set state PRIMED */
3346 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3347 flush_count++;
3348 queue->next_buf_to_fill =
3349 (queue->next_buf_to_fill + 1) %
3350 QDIO_MAX_BUFFERS_PER_Q;
3351 buffer = &queue->bufs[queue->next_buf_to_fill];
3352 /* we did a step forward, so check buffer state
3353 * again */
3354 if (atomic_read(&buffer->state) !=
3355 QETH_QDIO_BUF_EMPTY) {
3356 qeth_flush_buffers(queue, start_index,
3357 flush_count);
3358 atomic_set(&queue->state,
3359 QETH_OUT_Q_UNLOCKED);
3360 return -EBUSY;
3361 }
3362 }
3363 }
3364 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3365 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3366 QDIO_MAX_BUFFERS_PER_Q;
3367 flush_count += tmp;
3368 if (flush_count)
3369 qeth_flush_buffers(queue, start_index, flush_count);
3370 else if (!atomic_read(&queue->set_pci_flags_count))
3371 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3372 /*
3373 * queue->state will go from LOCKED -> UNLOCKED or from
3374 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3375 * (switch packing state or flush buffer to get another pci flag out).
3376 * In that case we will enter this loop
3377 */
3378 while (atomic_dec_return(&queue->state)) {
3379 flush_count = 0;
3380 start_index = queue->next_buf_to_fill;
3381 /* check if we can go back to non-packing state */
3382 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3383 /*
3384 * check if we need to flush a packing buffer to get a pci
3385 * flag out on the queue
3386 */
3387 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3388 flush_count += qeth_flush_buffers_on_no_pci(queue);
3389 if (flush_count)
3390 qeth_flush_buffers(queue, start_index, flush_count);
3391 }
3392 /* at this point the queue is UNLOCKED again */
3393 if (queue->card->options.performance_stats && do_pack)
3394 queue->card->perf_stats.bufs_sent_pack += flush_count;
3395
3396 return rc;
3397 }
3398 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3399
3400 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3401 struct qeth_reply *reply, unsigned long data)
3402 {
3403 struct qeth_ipa_cmd *cmd;
3404 struct qeth_ipacmd_setadpparms *setparms;
3405
3406 QETH_CARD_TEXT(card, 4, "prmadpcb");
3407
3408 cmd = (struct qeth_ipa_cmd *) data;
3409 setparms = &(cmd->data.setadapterparms);
3410
3411 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3412 if (cmd->hdr.return_code) {
3413 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
3414 setparms->data.mode = SET_PROMISC_MODE_OFF;
3415 }
3416 card->info.promisc_mode = setparms->data.mode;
3417 return 0;
3418 }
3419
3420 void qeth_setadp_promisc_mode(struct qeth_card *card)
3421 {
3422 enum qeth_ipa_promisc_modes mode;
3423 struct net_device *dev = card->dev;
3424 struct qeth_cmd_buffer *iob;
3425 struct qeth_ipa_cmd *cmd;
3426
3427 QETH_CARD_TEXT(card, 4, "setprom");
3428
3429 if (((dev->flags & IFF_PROMISC) &&
3430 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3431 (!(dev->flags & IFF_PROMISC) &&
3432 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3433 return;
3434 mode = SET_PROMISC_MODE_OFF;
3435 if (dev->flags & IFF_PROMISC)
3436 mode = SET_PROMISC_MODE_ON;
3437 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
3438
3439 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3440 sizeof(struct qeth_ipacmd_setadpparms));
3441 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3442 cmd->data.setadapterparms.data.mode = mode;
3443 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3444 }
3445 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3446
3447 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3448 {
3449 struct qeth_card *card;
3450 char dbf_text[15];
3451
3452 card = dev->ml_priv;
3453
3454 QETH_CARD_TEXT(card, 4, "chgmtu");
3455 sprintf(dbf_text, "%8x", new_mtu);
3456 QETH_CARD_TEXT(card, 4, dbf_text);
3457
3458 if (new_mtu < 64)
3459 return -EINVAL;
3460 if (new_mtu > 65535)
3461 return -EINVAL;
3462 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3463 (!qeth_mtu_is_valid(card, new_mtu)))
3464 return -EINVAL;
3465 dev->mtu = new_mtu;
3466 return 0;
3467 }
3468 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3469
3470 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3471 {
3472 struct qeth_card *card;
3473
3474 card = dev->ml_priv;
3475
3476 QETH_CARD_TEXT(card, 5, "getstat");
3477
3478 return &card->stats;
3479 }
3480 EXPORT_SYMBOL_GPL(qeth_get_stats);
3481
3482 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3483 struct qeth_reply *reply, unsigned long data)
3484 {
3485 struct qeth_ipa_cmd *cmd;
3486
3487 QETH_CARD_TEXT(card, 4, "chgmaccb");
3488
3489 cmd = (struct qeth_ipa_cmd *) data;
3490 if (!card->options.layer2 ||
3491 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3492 memcpy(card->dev->dev_addr,
3493 &cmd->data.setadapterparms.data.change_addr.addr,
3494 OSA_ADDR_LEN);
3495 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3496 }
3497 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3498 return 0;
3499 }
3500
3501 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3502 {
3503 int rc;
3504 struct qeth_cmd_buffer *iob;
3505 struct qeth_ipa_cmd *cmd;
3506
3507 QETH_CARD_TEXT(card, 4, "chgmac");
3508
3509 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3510 sizeof(struct qeth_ipacmd_setadpparms));
3511 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3512 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3513 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3514 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3515 card->dev->dev_addr, OSA_ADDR_LEN);
3516 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3517 NULL);
3518 return rc;
3519 }
3520 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3521
3522 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
3523 struct qeth_reply *reply, unsigned long data)
3524 {
3525 struct qeth_ipa_cmd *cmd;
3526 struct qeth_set_access_ctrl *access_ctrl_req;
3527
3528 QETH_CARD_TEXT(card, 4, "setaccb");
3529
3530 cmd = (struct qeth_ipa_cmd *) data;
3531 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3532 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
3533 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3534 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
3535 cmd->data.setadapterparms.hdr.return_code);
3536 switch (cmd->data.setadapterparms.hdr.return_code) {
3537 case SET_ACCESS_CTRL_RC_SUCCESS:
3538 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
3539 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
3540 {
3541 card->options.isolation = access_ctrl_req->subcmd_code;
3542 if (card->options.isolation == ISOLATION_MODE_NONE) {
3543 dev_info(&card->gdev->dev,
3544 "QDIO data connection isolation is deactivated\n");
3545 } else {
3546 dev_info(&card->gdev->dev,
3547 "QDIO data connection isolation is activated\n");
3548 }
3549 QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
3550 card->gdev->dev.kobj.name,
3551 access_ctrl_req->subcmd_code,
3552 cmd->data.setadapterparms.hdr.return_code);
3553 break;
3554 }
3555 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
3556 {
3557 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
3558 card->gdev->dev.kobj.name,
3559 access_ctrl_req->subcmd_code,
3560 cmd->data.setadapterparms.hdr.return_code);
3561 dev_err(&card->gdev->dev, "Adapter does not "
3562 "support QDIO data connection isolation\n");
3563
3564 /* ensure isolation mode is "none" */
3565 card->options.isolation = ISOLATION_MODE_NONE;
3566 break;
3567 }
3568 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
3569 {
3570 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3571 card->gdev->dev.kobj.name,
3572 access_ctrl_req->subcmd_code,
3573 cmd->data.setadapterparms.hdr.return_code);
3574 dev_err(&card->gdev->dev,
3575 "Adapter is dedicated. "
3576 "QDIO data connection isolation not supported\n");
3577
3578 /* ensure isolation mode is "none" */
3579 card->options.isolation = ISOLATION_MODE_NONE;
3580 break;
3581 }
3582 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
3583 {
3584 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
3585 card->gdev->dev.kobj.name,
3586 access_ctrl_req->subcmd_code,
3587 cmd->data.setadapterparms.hdr.return_code);
3588 dev_err(&card->gdev->dev,
3589 "TSO does not permit QDIO data connection isolation\n");
3590
3591 /* ensure isolation mode is "none" */
3592 card->options.isolation = ISOLATION_MODE_NONE;
3593 break;
3594 }
3595 default:
3596 {
3597 /* this should never happen */
3598 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
3599 "==UNKNOWN\n",
3600 card->gdev->dev.kobj.name,
3601 access_ctrl_req->subcmd_code,
3602 cmd->data.setadapterparms.hdr.return_code);
3603
3604 /* ensure isolation mode is "none" */
3605 card->options.isolation = ISOLATION_MODE_NONE;
3606 break;
3607 }
3608 }
3609 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3610 return 0;
3611 }
3612
3613 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
3614 enum qeth_ipa_isolation_modes isolation)
3615 {
3616 int rc;
3617 struct qeth_cmd_buffer *iob;
3618 struct qeth_ipa_cmd *cmd;
3619 struct qeth_set_access_ctrl *access_ctrl_req;
3620
3621 QETH_CARD_TEXT(card, 4, "setacctl");
3622
3623 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
3624 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
3625
3626 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
3627 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
3628 sizeof(struct qeth_set_access_ctrl));
3629 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3630 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
3631 access_ctrl_req->subcmd_code = isolation;
3632
3633 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
3634 NULL);
3635 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
3636 return rc;
3637 }
3638
3639 int qeth_set_access_ctrl_online(struct qeth_card *card)
3640 {
3641 int rc = 0;
3642
3643 QETH_CARD_TEXT(card, 4, "setactlo");
3644
3645 if ((card->info.type == QETH_CARD_TYPE_OSD ||
3646 card->info.type == QETH_CARD_TYPE_OSX) &&
3647 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
3648 rc = qeth_setadpparms_set_access_ctrl(card,
3649 card->options.isolation);
3650 if (rc) {
3651 QETH_DBF_MESSAGE(3,
3652 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
3653 card->gdev->dev.kobj.name,
3654 rc);
3655 }
3656 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
3657 card->options.isolation = ISOLATION_MODE_NONE;
3658
3659 dev_err(&card->gdev->dev, "Adapter does not "
3660 "support QDIO data connection isolation\n");
3661 rc = -EOPNOTSUPP;
3662 }
3663 return rc;
3664 }
3665 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
3666
3667 void qeth_tx_timeout(struct net_device *dev)
3668 {
3669 struct qeth_card *card;
3670
3671 card = dev->ml_priv;
3672 QETH_CARD_TEXT(card, 4, "txtimeo");
3673 card->stats.tx_errors++;
3674 qeth_schedule_recovery(card);
3675 }
3676 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3677
3678 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3679 {
3680 struct qeth_card *card = dev->ml_priv;
3681 int rc = 0;
3682
3683 switch (regnum) {
3684 case MII_BMCR: /* Basic mode control register */
3685 rc = BMCR_FULLDPLX;
3686 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3687 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3688 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3689 rc |= BMCR_SPEED100;
3690 break;
3691 case MII_BMSR: /* Basic mode status register */
3692 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3693 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3694 BMSR_100BASE4;
3695 break;
3696 case MII_PHYSID1: /* PHYS ID 1 */
3697 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3698 dev->dev_addr[2];
3699 rc = (rc >> 5) & 0xFFFF;
3700 break;
3701 case MII_PHYSID2: /* PHYS ID 2 */
3702 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3703 break;
3704 case MII_ADVERTISE: /* Advertisement control reg */
3705 rc = ADVERTISE_ALL;
3706 break;
3707 case MII_LPA: /* Link partner ability reg */
3708 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3709 LPA_100BASE4 | LPA_LPACK;
3710 break;
3711 case MII_EXPANSION: /* Expansion register */
3712 break;
3713 case MII_DCOUNTER: /* disconnect counter */
3714 break;
3715 case MII_FCSCOUNTER: /* false carrier counter */
3716 break;
3717 case MII_NWAYTEST: /* N-way auto-neg test register */
3718 break;
3719 case MII_RERRCOUNTER: /* rx error counter */
3720 rc = card->stats.rx_errors;
3721 break;
3722 case MII_SREVISION: /* silicon revision */
3723 break;
3724 case MII_RESV1: /* reserved 1 */
3725 break;
3726 case MII_LBRERROR: /* loopback, rx, bypass error */
3727 break;
3728 case MII_PHYADDR: /* physical address */
3729 break;
3730 case MII_RESV2: /* reserved 2 */
3731 break;
3732 case MII_TPISTATUS: /* TPI status for 10mbps */
3733 break;
3734 case MII_NCONFIG: /* network interface config */
3735 break;
3736 default:
3737 break;
3738 }
3739 return rc;
3740 }
3741 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3742
3743 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3744 struct qeth_cmd_buffer *iob, int len,
3745 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3746 unsigned long),
3747 void *reply_param)
3748 {
3749 u16 s1, s2;
3750
3751 QETH_CARD_TEXT(card, 4, "sendsnmp");
3752
3753 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3754 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3755 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3756 /* adjust PDU length fields in IPA_PDU_HEADER */
3757 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3758 s2 = (u32) len;
3759 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3760 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3761 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3762 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3763 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3764 reply_cb, reply_param);
3765 }
3766
3767 static int qeth_snmp_command_cb(struct qeth_card *card,
3768 struct qeth_reply *reply, unsigned long sdata)
3769 {
3770 struct qeth_ipa_cmd *cmd;
3771 struct qeth_arp_query_info *qinfo;
3772 struct qeth_snmp_cmd *snmp;
3773 unsigned char *data;
3774 __u16 data_len;
3775
3776 QETH_CARD_TEXT(card, 3, "snpcmdcb");
3777
3778 cmd = (struct qeth_ipa_cmd *) sdata;
3779 data = (unsigned char *)((char *)cmd - reply->offset);
3780 qinfo = (struct qeth_arp_query_info *) reply->param;
3781 snmp = &cmd->data.setadapterparms.data.snmp;
3782
3783 if (cmd->hdr.return_code) {
3784 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
3785 return 0;
3786 }
3787 if (cmd->data.setadapterparms.hdr.return_code) {
3788 cmd->hdr.return_code =
3789 cmd->data.setadapterparms.hdr.return_code;
3790 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
3791 return 0;
3792 }
3793 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3794 if (cmd->data.setadapterparms.hdr.seq_no == 1)
3795 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3796 else
3797 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3798
3799 /* check if there is enough room in userspace */
3800 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3801 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
3802 cmd->hdr.return_code = -ENOMEM;
3803 return 0;
3804 }
3805 QETH_CARD_TEXT_(card, 4, "snore%i",
3806 cmd->data.setadapterparms.hdr.used_total);
3807 QETH_CARD_TEXT_(card, 4, "sseqn%i",
3808 cmd->data.setadapterparms.hdr.seq_no);
3809 /*copy entries to user buffer*/
3810 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3811 memcpy(qinfo->udata + qinfo->udata_offset,
3812 (char *)snmp,
3813 data_len + offsetof(struct qeth_snmp_cmd, data));
3814 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3815 } else {
3816 memcpy(qinfo->udata + qinfo->udata_offset,
3817 (char *)&snmp->request, data_len);
3818 }
3819 qinfo->udata_offset += data_len;
3820 /* check if all replies received ... */
3821 QETH_CARD_TEXT_(card, 4, "srtot%i",
3822 cmd->data.setadapterparms.hdr.used_total);
3823 QETH_CARD_TEXT_(card, 4, "srseq%i",
3824 cmd->data.setadapterparms.hdr.seq_no);
3825 if (cmd->data.setadapterparms.hdr.seq_no <
3826 cmd->data.setadapterparms.hdr.used_total)
3827 return 1;
3828 return 0;
3829 }
3830
3831 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3832 {
3833 struct qeth_cmd_buffer *iob;
3834 struct qeth_ipa_cmd *cmd;
3835 struct qeth_snmp_ureq *ureq;
3836 int req_len;
3837 struct qeth_arp_query_info qinfo = {0, };
3838 int rc = 0;
3839
3840 QETH_CARD_TEXT(card, 3, "snmpcmd");
3841
3842 if (card->info.guestlan)
3843 return -EOPNOTSUPP;
3844
3845 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3846 (!card->options.layer2)) {
3847 return -EOPNOTSUPP;
3848 }
3849 /* skip 4 bytes (data_len struct member) to get req_len */
3850 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3851 return -EFAULT;
3852 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
3853 if (IS_ERR(ureq)) {
3854 QETH_CARD_TEXT(card, 2, "snmpnome");
3855 return PTR_ERR(ureq);
3856 }
3857 qinfo.udata_len = ureq->hdr.data_len;
3858 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3859 if (!qinfo.udata) {
3860 kfree(ureq);
3861 return -ENOMEM;
3862 }
3863 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3864
3865 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3866 QETH_SNMP_SETADP_CMDLENGTH + req_len);
3867 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3868 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3869 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3870 qeth_snmp_command_cb, (void *)&qinfo);
3871 if (rc)
3872 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3873 QETH_CARD_IFNAME(card), rc);
3874 else {
3875 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3876 rc = -EFAULT;
3877 }
3878
3879 kfree(ureq);
3880 kfree(qinfo.udata);
3881 return rc;
3882 }
3883 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3884
3885 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3886 {
3887 switch (card->info.type) {
3888 case QETH_CARD_TYPE_IQD:
3889 return 2;
3890 default:
3891 return 0;
3892 }
3893 }
3894
3895 static void qeth_determine_capabilities(struct qeth_card *card)
3896 {
3897 int rc;
3898 int length;
3899 char *prcd;
3900 struct ccw_device *ddev;
3901 int ddev_offline = 0;
3902
3903 QETH_DBF_TEXT(SETUP, 2, "detcapab");
3904 ddev = CARD_DDEV(card);
3905 if (!ddev->online) {
3906 ddev_offline = 1;
3907 rc = ccw_device_set_online(ddev);
3908 if (rc) {
3909 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3910 goto out;
3911 }
3912 }
3913
3914 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
3915 if (rc) {
3916 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
3917 dev_name(&card->gdev->dev), rc);
3918 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3919 goto out_offline;
3920 }
3921 qeth_configure_unitaddr(card, prcd);
3922 qeth_configure_blkt_default(card, prcd);
3923 kfree(prcd);
3924
3925 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
3926 if (rc)
3927 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3928
3929 out_offline:
3930 if (ddev_offline == 1)
3931 ccw_device_set_offline(ddev);
3932 out:
3933 return;
3934 }
3935
3936 static int qeth_qdio_establish(struct qeth_card *card)
3937 {
3938 struct qdio_initialize init_data;
3939 char *qib_param_field;
3940 struct qdio_buffer **in_sbal_ptrs;
3941 struct qdio_buffer **out_sbal_ptrs;
3942 int i, j, k;
3943 int rc = 0;
3944
3945 QETH_DBF_TEXT(SETUP, 2, "qdioest");
3946
3947 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3948 GFP_KERNEL);
3949 if (!qib_param_field)
3950 return -ENOMEM;
3951
3952 qeth_create_qib_param_field(card, qib_param_field);
3953 qeth_create_qib_param_field_blkt(card, qib_param_field);
3954
3955 in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3956 GFP_KERNEL);
3957 if (!in_sbal_ptrs) {
3958 kfree(qib_param_field);
3959 return -ENOMEM;
3960 }
3961 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3962 in_sbal_ptrs[i] = (struct qdio_buffer *)
3963 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3964
3965 out_sbal_ptrs =
3966 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3967 sizeof(void *), GFP_KERNEL);
3968 if (!out_sbal_ptrs) {
3969 kfree(in_sbal_ptrs);
3970 kfree(qib_param_field);
3971 return -ENOMEM;
3972 }
3973 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3974 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3975 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3976 card->qdio.out_qs[i]->bufs[j].buffer);
3977 }
3978
3979 memset(&init_data, 0, sizeof(struct qdio_initialize));
3980 init_data.cdev = CARD_DDEV(card);
3981 init_data.q_format = qeth_get_qdio_q_format(card);
3982 init_data.qib_param_field_format = 0;
3983 init_data.qib_param_field = qib_param_field;
3984 init_data.no_input_qs = 1;
3985 init_data.no_output_qs = card->qdio.no_out_queues;
3986 init_data.input_handler = card->discipline.input_handler;
3987 init_data.output_handler = card->discipline.output_handler;
3988 init_data.queue_start_poll = card->discipline.start_poll;
3989 init_data.int_parm = (unsigned long) card;
3990 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
3991 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3992 init_data.scan_threshold =
3993 (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
3994
3995 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3996 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3997 rc = qdio_allocate(&init_data);
3998 if (rc) {
3999 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4000 goto out;
4001 }
4002 rc = qdio_establish(&init_data);
4003 if (rc) {
4004 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4005 qdio_free(CARD_DDEV(card));
4006 }
4007 }
4008 out:
4009 kfree(out_sbal_ptrs);
4010 kfree(in_sbal_ptrs);
4011 kfree(qib_param_field);
4012 return rc;
4013 }
4014
4015 static void qeth_core_free_card(struct qeth_card *card)
4016 {
4017
4018 QETH_DBF_TEXT(SETUP, 2, "freecrd");
4019 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4020 qeth_clean_channel(&card->read);
4021 qeth_clean_channel(&card->write);
4022 if (card->dev)
4023 free_netdev(card->dev);
4024 kfree(card->ip_tbd_list);
4025 qeth_free_qdio_buffers(card);
4026 unregister_service_level(&card->qeth_service_level);
4027 kfree(card);
4028 }
4029
4030 static struct ccw_device_id qeth_ids[] = {
4031 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4032 .driver_info = QETH_CARD_TYPE_OSD},
4033 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4034 .driver_info = QETH_CARD_TYPE_IQD},
4035 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4036 .driver_info = QETH_CARD_TYPE_OSN},
4037 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4038 .driver_info = QETH_CARD_TYPE_OSM},
4039 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4040 .driver_info = QETH_CARD_TYPE_OSX},
4041 {},
4042 };
4043 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4044
4045 static struct ccw_driver qeth_ccw_driver = {
4046 .driver = {
4047 .owner = THIS_MODULE,
4048 .name = "qeth",
4049 },
4050 .ids = qeth_ids,
4051 .probe = ccwgroup_probe_ccwdev,
4052 .remove = ccwgroup_remove_ccwdev,
4053 };
4054
4055 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
4056 unsigned long driver_id)
4057 {
4058 return ccwgroup_create_from_string(root_dev, driver_id,
4059 &qeth_ccw_driver, 3, buf);
4060 }
4061
4062 int qeth_core_hardsetup_card(struct qeth_card *card)
4063 {
4064 int retries = 0;
4065 int rc;
4066
4067 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4068 atomic_set(&card->force_alloc_skb, 0);
4069 qeth_get_channel_path_desc(card);
4070 retry:
4071 if (retries)
4072 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4073 dev_name(&card->gdev->dev));
4074 ccw_device_set_offline(CARD_DDEV(card));
4075 ccw_device_set_offline(CARD_WDEV(card));
4076 ccw_device_set_offline(CARD_RDEV(card));
4077 rc = ccw_device_set_online(CARD_RDEV(card));
4078 if (rc)
4079 goto retriable;
4080 rc = ccw_device_set_online(CARD_WDEV(card));
4081 if (rc)
4082 goto retriable;
4083 rc = ccw_device_set_online(CARD_DDEV(card));
4084 if (rc)
4085 goto retriable;
4086 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4087 retriable:
4088 if (rc == -ERESTARTSYS) {
4089 QETH_DBF_TEXT(SETUP, 2, "break1");
4090 return rc;
4091 } else if (rc) {
4092 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4093 if (++retries > 3)
4094 goto out;
4095 else
4096 goto retry;
4097 }
4098 qeth_determine_capabilities(card);
4099 qeth_init_tokens(card);
4100 qeth_init_func_level(card);
4101 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4102 if (rc == -ERESTARTSYS) {
4103 QETH_DBF_TEXT(SETUP, 2, "break2");
4104 return rc;
4105 } else if (rc) {
4106 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4107 if (--retries < 0)
4108 goto out;
4109 else
4110 goto retry;
4111 }
4112 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4113 if (rc == -ERESTARTSYS) {
4114 QETH_DBF_TEXT(SETUP, 2, "break3");
4115 return rc;
4116 } else if (rc) {
4117 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4118 if (--retries < 0)
4119 goto out;
4120 else
4121 goto retry;
4122 }
4123 card->read_or_write_problem = 0;
4124 rc = qeth_mpc_initialize(card);
4125 if (rc) {
4126 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4127 goto out;
4128 }
4129
4130 card->options.ipa4.supported_funcs = 0;
4131 card->options.adp.supported_funcs = 0;
4132 card->info.diagass_support = 0;
4133 qeth_query_ipassists(card, QETH_PROT_IPV4);
4134 if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4135 qeth_query_setadapterparms(card);
4136 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4137 qeth_query_setdiagass(card);
4138 return 0;
4139 out:
4140 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4141 "an error on the device\n");
4142 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4143 dev_name(&card->gdev->dev), rc);
4144 return rc;
4145 }
4146 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4147
4148 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
4149 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4150 {
4151 struct page *page = virt_to_page(element->addr);
4152 if (*pskb == NULL) {
4153 /* the upper protocol layers assume that there is data in the
4154 * skb itself. Copy a small amount (64 bytes) to make them
4155 * happy. */
4156 *pskb = dev_alloc_skb(64 + ETH_HLEN);
4157 if (!(*pskb))
4158 return -ENOMEM;
4159 skb_reserve(*pskb, ETH_HLEN);
4160 if (data_len <= 64) {
4161 memcpy(skb_put(*pskb, data_len), element->addr + offset,
4162 data_len);
4163 } else {
4164 get_page(page);
4165 memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
4166 skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
4167 data_len - 64);
4168 (*pskb)->data_len += data_len - 64;
4169 (*pskb)->len += data_len - 64;
4170 (*pskb)->truesize += data_len - 64;
4171 (*pfrag)++;
4172 }
4173 } else {
4174 get_page(page);
4175 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4176 (*pskb)->data_len += data_len;
4177 (*pskb)->len += data_len;
4178 (*pskb)->truesize += data_len;
4179 (*pfrag)++;
4180 }
4181 return 0;
4182 }
4183
4184 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4185 struct qdio_buffer *buffer,
4186 struct qdio_buffer_element **__element, int *__offset,
4187 struct qeth_hdr **hdr)
4188 {
4189 struct qdio_buffer_element *element = *__element;
4190 int offset = *__offset;
4191 struct sk_buff *skb = NULL;
4192 int skb_len = 0;
4193 void *data_ptr;
4194 int data_len;
4195 int headroom = 0;
4196 int use_rx_sg = 0;
4197 int frag = 0;
4198
4199 /* qeth_hdr must not cross element boundaries */
4200 if (element->length < offset + sizeof(struct qeth_hdr)) {
4201 if (qeth_is_last_sbale(element))
4202 return NULL;
4203 element++;
4204 offset = 0;
4205 if (element->length < sizeof(struct qeth_hdr))
4206 return NULL;
4207 }
4208 *hdr = element->addr + offset;
4209
4210 offset += sizeof(struct qeth_hdr);
4211 switch ((*hdr)->hdr.l2.id) {
4212 case QETH_HEADER_TYPE_LAYER2:
4213 skb_len = (*hdr)->hdr.l2.pkt_length;
4214 break;
4215 case QETH_HEADER_TYPE_LAYER3:
4216 skb_len = (*hdr)->hdr.l3.length;
4217 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
4218 (card->info.link_type == QETH_LINK_TYPE_HSTR))
4219 headroom = TR_HLEN;
4220 else
4221 headroom = ETH_HLEN;
4222 break;
4223 case QETH_HEADER_TYPE_OSN:
4224 skb_len = (*hdr)->hdr.osn.pdu_length;
4225 headroom = sizeof(struct qeth_hdr);
4226 break;
4227 default:
4228 break;
4229 }
4230
4231 if (!skb_len)
4232 return NULL;
4233
4234 if ((skb_len >= card->options.rx_sg_cb) &&
4235 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
4236 (!atomic_read(&card->force_alloc_skb))) {
4237 use_rx_sg = 1;
4238 } else {
4239 skb = dev_alloc_skb(skb_len + headroom);
4240 if (!skb)
4241 goto no_mem;
4242 if (headroom)
4243 skb_reserve(skb, headroom);
4244 }
4245
4246 data_ptr = element->addr + offset;
4247 while (skb_len) {
4248 data_len = min(skb_len, (int)(element->length - offset));
4249 if (data_len) {
4250 if (use_rx_sg) {
4251 if (qeth_create_skb_frag(element, &skb, offset,
4252 &frag, data_len))
4253 goto no_mem;
4254 } else {
4255 memcpy(skb_put(skb, data_len), data_ptr,
4256 data_len);
4257 }
4258 }
4259 skb_len -= data_len;
4260 if (skb_len) {
4261 if (qeth_is_last_sbale(element)) {
4262 QETH_CARD_TEXT(card, 4, "unexeob");
4263 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
4264 dev_kfree_skb_any(skb);
4265 card->stats.rx_errors++;
4266 return NULL;
4267 }
4268 element++;
4269 offset = 0;
4270 data_ptr = element->addr;
4271 } else {
4272 offset += data_len;
4273 }
4274 }
4275 *__element = element;
4276 *__offset = offset;
4277 if (use_rx_sg && card->options.performance_stats) {
4278 card->perf_stats.sg_skbs_rx++;
4279 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
4280 }
4281 return skb;
4282 no_mem:
4283 if (net_ratelimit()) {
4284 QETH_CARD_TEXT(card, 2, "noskbmem");
4285 }
4286 card->stats.rx_dropped++;
4287 return NULL;
4288 }
4289 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
4290
4291 static void qeth_unregister_dbf_views(void)
4292 {
4293 int x;
4294 for (x = 0; x < QETH_DBF_INFOS; x++) {
4295 debug_unregister(qeth_dbf[x].id);
4296 qeth_dbf[x].id = NULL;
4297 }
4298 }
4299
4300 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
4301 {
4302 char dbf_txt_buf[32];
4303 va_list args;
4304
4305 if (level > id->level)
4306 return;
4307 va_start(args, fmt);
4308 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
4309 va_end(args);
4310 debug_text_event(id, level, dbf_txt_buf);
4311 }
4312 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
4313
4314 static int qeth_register_dbf_views(void)
4315 {
4316 int ret;
4317 int x;
4318
4319 for (x = 0; x < QETH_DBF_INFOS; x++) {
4320 /* register the areas */
4321 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4322 qeth_dbf[x].pages,
4323 qeth_dbf[x].areas,
4324 qeth_dbf[x].len);
4325 if (qeth_dbf[x].id == NULL) {
4326 qeth_unregister_dbf_views();
4327 return -ENOMEM;
4328 }
4329
4330 /* register a view */
4331 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4332 if (ret) {
4333 qeth_unregister_dbf_views();
4334 return ret;
4335 }
4336
4337 /* set a passing level */
4338 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4339 }
4340
4341 return 0;
4342 }
4343
4344 int qeth_core_load_discipline(struct qeth_card *card,
4345 enum qeth_discipline_id discipline)
4346 {
4347 int rc = 0;
4348 switch (discipline) {
4349 case QETH_DISCIPLINE_LAYER3:
4350 card->discipline.ccwgdriver = try_then_request_module(
4351 symbol_get(qeth_l3_ccwgroup_driver),
4352 "qeth_l3");
4353 break;
4354 case QETH_DISCIPLINE_LAYER2:
4355 card->discipline.ccwgdriver = try_then_request_module(
4356 symbol_get(qeth_l2_ccwgroup_driver),
4357 "qeth_l2");
4358 break;
4359 }
4360 if (!card->discipline.ccwgdriver) {
4361 dev_err(&card->gdev->dev, "There is no kernel module to "
4362 "support discipline %d\n", discipline);
4363 rc = -EINVAL;
4364 }
4365 return rc;
4366 }
4367
4368 void qeth_core_free_discipline(struct qeth_card *card)
4369 {
4370 if (card->options.layer2)
4371 symbol_put(qeth_l2_ccwgroup_driver);
4372 else
4373 symbol_put(qeth_l3_ccwgroup_driver);
4374 card->discipline.ccwgdriver = NULL;
4375 }
4376
4377 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4378 {
4379 struct qeth_card *card;
4380 struct device *dev;
4381 int rc;
4382 unsigned long flags;
4383 char dbf_name[20];
4384
4385 QETH_DBF_TEXT(SETUP, 2, "probedev");
4386
4387 dev = &gdev->dev;
4388 if (!get_device(dev))
4389 return -ENODEV;
4390
4391 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4392
4393 card = qeth_alloc_card();
4394 if (!card) {
4395 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4396 rc = -ENOMEM;
4397 goto err_dev;
4398 }
4399
4400 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
4401 dev_name(&gdev->dev));
4402 card->debug = debug_register(dbf_name, 2, 1, 8);
4403 if (!card->debug) {
4404 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
4405 rc = -ENOMEM;
4406 goto err_card;
4407 }
4408 debug_register_view(card->debug, &debug_hex_ascii_view);
4409
4410 card->read.ccwdev = gdev->cdev[0];
4411 card->write.ccwdev = gdev->cdev[1];
4412 card->data.ccwdev = gdev->cdev[2];
4413 dev_set_drvdata(&gdev->dev, card);
4414 card->gdev = gdev;
4415 gdev->cdev[0]->handler = qeth_irq;
4416 gdev->cdev[1]->handler = qeth_irq;
4417 gdev->cdev[2]->handler = qeth_irq;
4418
4419 rc = qeth_determine_card_type(card);
4420 if (rc) {
4421 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4422 goto err_dbf;
4423 }
4424 rc = qeth_setup_card(card);
4425 if (rc) {
4426 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4427 goto err_dbf;
4428 }
4429
4430 if (card->info.type == QETH_CARD_TYPE_OSN)
4431 rc = qeth_core_create_osn_attributes(dev);
4432 else
4433 rc = qeth_core_create_device_attributes(dev);
4434 if (rc)
4435 goto err_dbf;
4436 switch (card->info.type) {
4437 case QETH_CARD_TYPE_OSN:
4438 case QETH_CARD_TYPE_OSM:
4439 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4440 if (rc)
4441 goto err_attr;
4442 rc = card->discipline.ccwgdriver->probe(card->gdev);
4443 if (rc)
4444 goto err_disc;
4445 case QETH_CARD_TYPE_OSD:
4446 case QETH_CARD_TYPE_OSX:
4447 default:
4448 break;
4449 }
4450
4451 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4452 list_add_tail(&card->list, &qeth_core_card_list.list);
4453 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4454
4455 qeth_determine_capabilities(card);
4456 return 0;
4457
4458 err_disc:
4459 qeth_core_free_discipline(card);
4460 err_attr:
4461 if (card->info.type == QETH_CARD_TYPE_OSN)
4462 qeth_core_remove_osn_attributes(dev);
4463 else
4464 qeth_core_remove_device_attributes(dev);
4465 err_dbf:
4466 debug_unregister(card->debug);
4467 err_card:
4468 qeth_core_free_card(card);
4469 err_dev:
4470 put_device(dev);
4471 return rc;
4472 }
4473
4474 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4475 {
4476 unsigned long flags;
4477 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4478
4479 QETH_DBF_TEXT(SETUP, 2, "removedv");
4480
4481 if (card->info.type == QETH_CARD_TYPE_OSN) {
4482 qeth_core_remove_osn_attributes(&gdev->dev);
4483 } else {
4484 qeth_core_remove_device_attributes(&gdev->dev);
4485 }
4486
4487 if (card->discipline.ccwgdriver) {
4488 card->discipline.ccwgdriver->remove(gdev);
4489 qeth_core_free_discipline(card);
4490 }
4491
4492 debug_unregister(card->debug);
4493 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4494 list_del(&card->list);
4495 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4496 qeth_core_free_card(card);
4497 dev_set_drvdata(&gdev->dev, NULL);
4498 put_device(&gdev->dev);
4499 return;
4500 }
4501
4502 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4503 {
4504 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4505 int rc = 0;
4506 int def_discipline;
4507
4508 if (!card->discipline.ccwgdriver) {
4509 if (card->info.type == QETH_CARD_TYPE_IQD)
4510 def_discipline = QETH_DISCIPLINE_LAYER3;
4511 else
4512 def_discipline = QETH_DISCIPLINE_LAYER2;
4513 rc = qeth_core_load_discipline(card, def_discipline);
4514 if (rc)
4515 goto err;
4516 rc = card->discipline.ccwgdriver->probe(card->gdev);
4517 if (rc)
4518 goto err;
4519 }
4520 rc = card->discipline.ccwgdriver->set_online(gdev);
4521 err:
4522 return rc;
4523 }
4524
4525 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4526 {
4527 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4528 return card->discipline.ccwgdriver->set_offline(gdev);
4529 }
4530
4531 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4532 {
4533 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4534 if (card->discipline.ccwgdriver &&
4535 card->discipline.ccwgdriver->shutdown)
4536 card->discipline.ccwgdriver->shutdown(gdev);
4537 }
4538
4539 static int qeth_core_prepare(struct ccwgroup_device *gdev)
4540 {
4541 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4542 if (card->discipline.ccwgdriver &&
4543 card->discipline.ccwgdriver->prepare)
4544 return card->discipline.ccwgdriver->prepare(gdev);
4545 return 0;
4546 }
4547
4548 static void qeth_core_complete(struct ccwgroup_device *gdev)
4549 {
4550 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4551 if (card->discipline.ccwgdriver &&
4552 card->discipline.ccwgdriver->complete)
4553 card->discipline.ccwgdriver->complete(gdev);
4554 }
4555
4556 static int qeth_core_freeze(struct ccwgroup_device *gdev)
4557 {
4558 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4559 if (card->discipline.ccwgdriver &&
4560 card->discipline.ccwgdriver->freeze)
4561 return card->discipline.ccwgdriver->freeze(gdev);
4562 return 0;
4563 }
4564
4565 static int qeth_core_thaw(struct ccwgroup_device *gdev)
4566 {
4567 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4568 if (card->discipline.ccwgdriver &&
4569 card->discipline.ccwgdriver->thaw)
4570 return card->discipline.ccwgdriver->thaw(gdev);
4571 return 0;
4572 }
4573
4574 static int qeth_core_restore(struct ccwgroup_device *gdev)
4575 {
4576 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4577 if (card->discipline.ccwgdriver &&
4578 card->discipline.ccwgdriver->restore)
4579 return card->discipline.ccwgdriver->restore(gdev);
4580 return 0;
4581 }
4582
4583 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4584 .driver = {
4585 .owner = THIS_MODULE,
4586 .name = "qeth",
4587 },
4588 .driver_id = 0xD8C5E3C8,
4589 .probe = qeth_core_probe_device,
4590 .remove = qeth_core_remove_device,
4591 .set_online = qeth_core_set_online,
4592 .set_offline = qeth_core_set_offline,
4593 .shutdown = qeth_core_shutdown,
4594 .prepare = qeth_core_prepare,
4595 .complete = qeth_core_complete,
4596 .freeze = qeth_core_freeze,
4597 .thaw = qeth_core_thaw,
4598 .restore = qeth_core_restore,
4599 };
4600
4601 static ssize_t
4602 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4603 size_t count)
4604 {
4605 int err;
4606 err = qeth_core_driver_group(buf, qeth_core_root_dev,
4607 qeth_core_ccwgroup_driver.driver_id);
4608 if (err)
4609 return err;
4610 else
4611 return count;
4612 }
4613
4614 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4615
4616 static struct {
4617 const char str[ETH_GSTRING_LEN];
4618 } qeth_ethtool_stats_keys[] = {
4619 /* 0 */{"rx skbs"},
4620 {"rx buffers"},
4621 {"tx skbs"},
4622 {"tx buffers"},
4623 {"tx skbs no packing"},
4624 {"tx buffers no packing"},
4625 {"tx skbs packing"},
4626 {"tx buffers packing"},
4627 {"tx sg skbs"},
4628 {"tx sg frags"},
4629 /* 10 */{"rx sg skbs"},
4630 {"rx sg frags"},
4631 {"rx sg page allocs"},
4632 {"tx large kbytes"},
4633 {"tx large count"},
4634 {"tx pk state ch n->p"},
4635 {"tx pk state ch p->n"},
4636 {"tx pk watermark low"},
4637 {"tx pk watermark high"},
4638 {"queue 0 buffer usage"},
4639 /* 20 */{"queue 1 buffer usage"},
4640 {"queue 2 buffer usage"},
4641 {"queue 3 buffer usage"},
4642 {"rx poll time"},
4643 {"rx poll count"},
4644 {"rx do_QDIO time"},
4645 {"rx do_QDIO count"},
4646 {"tx handler time"},
4647 {"tx handler count"},
4648 {"tx time"},
4649 /* 30 */{"tx count"},
4650 {"tx do_QDIO time"},
4651 {"tx do_QDIO count"},
4652 {"tx csum"},
4653 {"tx lin"},
4654 };
4655
4656 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
4657 {
4658 switch (stringset) {
4659 case ETH_SS_STATS:
4660 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4661 default:
4662 return -EINVAL;
4663 }
4664 }
4665 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
4666
4667 void qeth_core_get_ethtool_stats(struct net_device *dev,
4668 struct ethtool_stats *stats, u64 *data)
4669 {
4670 struct qeth_card *card = dev->ml_priv;
4671 data[0] = card->stats.rx_packets -
4672 card->perf_stats.initial_rx_packets;
4673 data[1] = card->perf_stats.bufs_rec;
4674 data[2] = card->stats.tx_packets -
4675 card->perf_stats.initial_tx_packets;
4676 data[3] = card->perf_stats.bufs_sent;
4677 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4678 - card->perf_stats.skbs_sent_pack;
4679 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4680 data[6] = card->perf_stats.skbs_sent_pack;
4681 data[7] = card->perf_stats.bufs_sent_pack;
4682 data[8] = card->perf_stats.sg_skbs_sent;
4683 data[9] = card->perf_stats.sg_frags_sent;
4684 data[10] = card->perf_stats.sg_skbs_rx;
4685 data[11] = card->perf_stats.sg_frags_rx;
4686 data[12] = card->perf_stats.sg_alloc_page_rx;
4687 data[13] = (card->perf_stats.large_send_bytes >> 10);
4688 data[14] = card->perf_stats.large_send_cnt;
4689 data[15] = card->perf_stats.sc_dp_p;
4690 data[16] = card->perf_stats.sc_p_dp;
4691 data[17] = QETH_LOW_WATERMARK_PACK;
4692 data[18] = QETH_HIGH_WATERMARK_PACK;
4693 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4694 data[20] = (card->qdio.no_out_queues > 1) ?
4695 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4696 data[21] = (card->qdio.no_out_queues > 2) ?
4697 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4698 data[22] = (card->qdio.no_out_queues > 3) ?
4699 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4700 data[23] = card->perf_stats.inbound_time;
4701 data[24] = card->perf_stats.inbound_cnt;
4702 data[25] = card->perf_stats.inbound_do_qdio_time;
4703 data[26] = card->perf_stats.inbound_do_qdio_cnt;
4704 data[27] = card->perf_stats.outbound_handler_time;
4705 data[28] = card->perf_stats.outbound_handler_cnt;
4706 data[29] = card->perf_stats.outbound_time;
4707 data[30] = card->perf_stats.outbound_cnt;
4708 data[31] = card->perf_stats.outbound_do_qdio_time;
4709 data[32] = card->perf_stats.outbound_do_qdio_cnt;
4710 data[33] = card->perf_stats.tx_csum;
4711 data[34] = card->perf_stats.tx_lin;
4712 }
4713 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4714
4715 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4716 {
4717 switch (stringset) {
4718 case ETH_SS_STATS:
4719 memcpy(data, &qeth_ethtool_stats_keys,
4720 sizeof(qeth_ethtool_stats_keys));
4721 break;
4722 default:
4723 WARN_ON(1);
4724 break;
4725 }
4726 }
4727 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4728
4729 void qeth_core_get_drvinfo(struct net_device *dev,
4730 struct ethtool_drvinfo *info)
4731 {
4732 struct qeth_card *card = dev->ml_priv;
4733 if (card->options.layer2)
4734 strcpy(info->driver, "qeth_l2");
4735 else
4736 strcpy(info->driver, "qeth_l3");
4737
4738 strcpy(info->version, "1.0");
4739 strcpy(info->fw_version, card->info.mcl_level);
4740 sprintf(info->bus_info, "%s/%s/%s",
4741 CARD_RDEV_ID(card),
4742 CARD_WDEV_ID(card),
4743 CARD_DDEV_ID(card));
4744 }
4745 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4746
4747 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4748 struct ethtool_cmd *ecmd)
4749 {
4750 struct qeth_card *card = netdev->ml_priv;
4751 enum qeth_link_types link_type;
4752
4753 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4754 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4755 else
4756 link_type = card->info.link_type;
4757
4758 ecmd->transceiver = XCVR_INTERNAL;
4759 ecmd->supported = SUPPORTED_Autoneg;
4760 ecmd->advertising = ADVERTISED_Autoneg;
4761 ecmd->duplex = DUPLEX_FULL;
4762 ecmd->autoneg = AUTONEG_ENABLE;
4763
4764 switch (link_type) {
4765 case QETH_LINK_TYPE_FAST_ETH:
4766 case QETH_LINK_TYPE_LANE_ETH100:
4767 ecmd->supported |= SUPPORTED_10baseT_Half |
4768 SUPPORTED_10baseT_Full |
4769 SUPPORTED_100baseT_Half |
4770 SUPPORTED_100baseT_Full |
4771 SUPPORTED_TP;
4772 ecmd->advertising |= ADVERTISED_10baseT_Half |
4773 ADVERTISED_10baseT_Full |
4774 ADVERTISED_100baseT_Half |
4775 ADVERTISED_100baseT_Full |
4776 ADVERTISED_TP;
4777 ecmd->speed = SPEED_100;
4778 ecmd->port = PORT_TP;
4779 break;
4780
4781 case QETH_LINK_TYPE_GBIT_ETH:
4782 case QETH_LINK_TYPE_LANE_ETH1000:
4783 ecmd->supported |= SUPPORTED_10baseT_Half |
4784 SUPPORTED_10baseT_Full |
4785 SUPPORTED_100baseT_Half |
4786 SUPPORTED_100baseT_Full |
4787 SUPPORTED_1000baseT_Half |
4788 SUPPORTED_1000baseT_Full |
4789 SUPPORTED_FIBRE;
4790 ecmd->advertising |= ADVERTISED_10baseT_Half |
4791 ADVERTISED_10baseT_Full |
4792 ADVERTISED_100baseT_Half |
4793 ADVERTISED_100baseT_Full |
4794 ADVERTISED_1000baseT_Half |
4795 ADVERTISED_1000baseT_Full |
4796 ADVERTISED_FIBRE;
4797 ecmd->speed = SPEED_1000;
4798 ecmd->port = PORT_FIBRE;
4799 break;
4800
4801 case QETH_LINK_TYPE_10GBIT_ETH:
4802 ecmd->supported |= SUPPORTED_10baseT_Half |
4803 SUPPORTED_10baseT_Full |
4804 SUPPORTED_100baseT_Half |
4805 SUPPORTED_100baseT_Full |
4806 SUPPORTED_1000baseT_Half |
4807 SUPPORTED_1000baseT_Full |
4808 SUPPORTED_10000baseT_Full |
4809 SUPPORTED_FIBRE;
4810 ecmd->advertising |= ADVERTISED_10baseT_Half |
4811 ADVERTISED_10baseT_Full |
4812 ADVERTISED_100baseT_Half |
4813 ADVERTISED_100baseT_Full |
4814 ADVERTISED_1000baseT_Half |
4815 ADVERTISED_1000baseT_Full |
4816 ADVERTISED_10000baseT_Full |
4817 ADVERTISED_FIBRE;
4818 ecmd->speed = SPEED_10000;
4819 ecmd->port = PORT_FIBRE;
4820 break;
4821
4822 default:
4823 ecmd->supported |= SUPPORTED_10baseT_Half |
4824 SUPPORTED_10baseT_Full |
4825 SUPPORTED_TP;
4826 ecmd->advertising |= ADVERTISED_10baseT_Half |
4827 ADVERTISED_10baseT_Full |
4828 ADVERTISED_TP;
4829 ecmd->speed = SPEED_10;
4830 ecmd->port = PORT_TP;
4831 }
4832
4833 return 0;
4834 }
4835 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4836
4837 static int __init qeth_core_init(void)
4838 {
4839 int rc;
4840
4841 pr_info("loading core functions\n");
4842 INIT_LIST_HEAD(&qeth_core_card_list.list);
4843 rwlock_init(&qeth_core_card_list.rwlock);
4844
4845 rc = qeth_register_dbf_views();
4846 if (rc)
4847 goto out_err;
4848 rc = ccw_driver_register(&qeth_ccw_driver);
4849 if (rc)
4850 goto ccw_err;
4851 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4852 if (rc)
4853 goto ccwgroup_err;
4854 rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4855 &driver_attr_group);
4856 if (rc)
4857 goto driver_err;
4858 qeth_core_root_dev = root_device_register("qeth");
4859 rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4860 if (rc)
4861 goto register_err;
4862
4863 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4864 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4865 if (!qeth_core_header_cache) {
4866 rc = -ENOMEM;
4867 goto slab_err;
4868 }
4869
4870 return 0;
4871 slab_err:
4872 root_device_unregister(qeth_core_root_dev);
4873 register_err:
4874 driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4875 &driver_attr_group);
4876 driver_err:
4877 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4878 ccwgroup_err:
4879 ccw_driver_unregister(&qeth_ccw_driver);
4880 ccw_err:
4881 QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4882 qeth_unregister_dbf_views();
4883 out_err:
4884 pr_err("Initializing the qeth device driver failed\n");
4885 return rc;
4886 }
4887
4888 static void __exit qeth_core_exit(void)
4889 {
4890 root_device_unregister(qeth_core_root_dev);
4891 driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4892 &driver_attr_group);
4893 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4894 ccw_driver_unregister(&qeth_ccw_driver);
4895 kmem_cache_destroy(qeth_core_header_cache);
4896 qeth_unregister_dbf_views();
4897 pr_info("core functions removed\n");
4898 }
4899
4900 module_init(qeth_core_init);
4901 module_exit(qeth_core_exit);
4902 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4903 MODULE_DESCRIPTION("qeth core functions");
4904 MODULE_LICENSE("GPL");
Linux with added FPC-III support