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hwmon: (max6650) Add support for alarms
[deliverable/linux.git] / drivers / s390 / net / qeth_core_main.c
1 /*
2 * drivers/s390/net/qeth_core_main.c
3 *
4 * Copyright IBM Corp. 2007
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
24 #include <asm/ebcdic.h>
25 #include <asm/io.h>
26
27 #include "qeth_core.h"
28
29 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
30 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
31 /* N P A M L V H */
32 [QETH_DBF_SETUP] = {"qeth_setup",
33 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
34 [QETH_DBF_QERR] = {"qeth_qerr",
35 2, 1, 8, 2, &debug_hex_ascii_view, NULL},
36 [QETH_DBF_TRACE] = {"qeth_trace",
37 4, 1, 8, 3, &debug_hex_ascii_view, NULL},
38 [QETH_DBF_MSG] = {"qeth_msg",
39 8, 1, 128, 3, &debug_sprintf_view, NULL},
40 [QETH_DBF_SENSE] = {"qeth_sense",
41 2, 1, 64, 2, &debug_hex_ascii_view, NULL},
42 [QETH_DBF_MISC] = {"qeth_misc",
43 2, 1, 256, 2, &debug_hex_ascii_view, NULL},
44 [QETH_DBF_CTRL] = {"qeth_control",
45 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
46 };
47 EXPORT_SYMBOL_GPL(qeth_dbf);
48
49 struct qeth_card_list_struct qeth_core_card_list;
50 EXPORT_SYMBOL_GPL(qeth_core_card_list);
51 struct kmem_cache *qeth_core_header_cache;
52 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
53
54 static struct device *qeth_core_root_dev;
55 static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
56 static struct lock_class_key qdio_out_skb_queue_key;
57
58 static void qeth_send_control_data_cb(struct qeth_channel *,
59 struct qeth_cmd_buffer *);
60 static int qeth_issue_next_read(struct qeth_card *);
61 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
62 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
63 static void qeth_free_buffer_pool(struct qeth_card *);
64 static int qeth_qdio_establish(struct qeth_card *);
65
66
67 static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
68 struct qdio_buffer *buffer, int is_tso,
69 int *next_element_to_fill)
70 {
71 struct skb_frag_struct *frag;
72 int fragno;
73 unsigned long addr;
74 int element, cnt, dlen;
75
76 fragno = skb_shinfo(skb)->nr_frags;
77 element = *next_element_to_fill;
78 dlen = 0;
79
80 if (is_tso)
81 buffer->element[element].flags =
82 SBAL_FLAGS_MIDDLE_FRAG;
83 else
84 buffer->element[element].flags =
85 SBAL_FLAGS_FIRST_FRAG;
86 dlen = skb->len - skb->data_len;
87 if (dlen) {
88 buffer->element[element].addr = skb->data;
89 buffer->element[element].length = dlen;
90 element++;
91 }
92 for (cnt = 0; cnt < fragno; cnt++) {
93 frag = &skb_shinfo(skb)->frags[cnt];
94 addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
95 frag->page_offset;
96 buffer->element[element].addr = (char *)addr;
97 buffer->element[element].length = frag->size;
98 if (cnt < (fragno - 1))
99 buffer->element[element].flags =
100 SBAL_FLAGS_MIDDLE_FRAG;
101 else
102 buffer->element[element].flags =
103 SBAL_FLAGS_LAST_FRAG;
104 element++;
105 }
106 *next_element_to_fill = element;
107 }
108
109 static inline const char *qeth_get_cardname(struct qeth_card *card)
110 {
111 if (card->info.guestlan) {
112 switch (card->info.type) {
113 case QETH_CARD_TYPE_OSAE:
114 return " Guest LAN QDIO";
115 case QETH_CARD_TYPE_IQD:
116 return " Guest LAN Hiper";
117 default:
118 return " unknown";
119 }
120 } else {
121 switch (card->info.type) {
122 case QETH_CARD_TYPE_OSAE:
123 return " OSD Express";
124 case QETH_CARD_TYPE_IQD:
125 return " HiperSockets";
126 case QETH_CARD_TYPE_OSN:
127 return " OSN QDIO";
128 default:
129 return " unknown";
130 }
131 }
132 return " n/a";
133 }
134
135 /* max length to be returned: 14 */
136 const char *qeth_get_cardname_short(struct qeth_card *card)
137 {
138 if (card->info.guestlan) {
139 switch (card->info.type) {
140 case QETH_CARD_TYPE_OSAE:
141 return "GuestLAN QDIO";
142 case QETH_CARD_TYPE_IQD:
143 return "GuestLAN Hiper";
144 default:
145 return "unknown";
146 }
147 } else {
148 switch (card->info.type) {
149 case QETH_CARD_TYPE_OSAE:
150 switch (card->info.link_type) {
151 case QETH_LINK_TYPE_FAST_ETH:
152 return "OSD_100";
153 case QETH_LINK_TYPE_HSTR:
154 return "HSTR";
155 case QETH_LINK_TYPE_GBIT_ETH:
156 return "OSD_1000";
157 case QETH_LINK_TYPE_10GBIT_ETH:
158 return "OSD_10GIG";
159 case QETH_LINK_TYPE_LANE_ETH100:
160 return "OSD_FE_LANE";
161 case QETH_LINK_TYPE_LANE_TR:
162 return "OSD_TR_LANE";
163 case QETH_LINK_TYPE_LANE_ETH1000:
164 return "OSD_GbE_LANE";
165 case QETH_LINK_TYPE_LANE:
166 return "OSD_ATM_LANE";
167 default:
168 return "OSD_Express";
169 }
170 case QETH_CARD_TYPE_IQD:
171 return "HiperSockets";
172 case QETH_CARD_TYPE_OSN:
173 return "OSN";
174 default:
175 return "unknown";
176 }
177 }
178 return "n/a";
179 }
180
181 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
182 int clear_start_mask)
183 {
184 unsigned long flags;
185
186 spin_lock_irqsave(&card->thread_mask_lock, flags);
187 card->thread_allowed_mask = threads;
188 if (clear_start_mask)
189 card->thread_start_mask &= threads;
190 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
191 wake_up(&card->wait_q);
192 }
193 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
194
195 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
196 {
197 unsigned long flags;
198 int rc = 0;
199
200 spin_lock_irqsave(&card->thread_mask_lock, flags);
201 rc = (card->thread_running_mask & threads);
202 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
203 return rc;
204 }
205 EXPORT_SYMBOL_GPL(qeth_threads_running);
206
207 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
208 {
209 return wait_event_interruptible(card->wait_q,
210 qeth_threads_running(card, threads) == 0);
211 }
212 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
213
214 void qeth_clear_working_pool_list(struct qeth_card *card)
215 {
216 struct qeth_buffer_pool_entry *pool_entry, *tmp;
217
218 QETH_DBF_TEXT(TRACE, 5, "clwrklst");
219 list_for_each_entry_safe(pool_entry, tmp,
220 &card->qdio.in_buf_pool.entry_list, list){
221 list_del(&pool_entry->list);
222 }
223 }
224 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
225
226 static int qeth_alloc_buffer_pool(struct qeth_card *card)
227 {
228 struct qeth_buffer_pool_entry *pool_entry;
229 void *ptr;
230 int i, j;
231
232 QETH_DBF_TEXT(TRACE, 5, "alocpool");
233 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
234 pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
235 if (!pool_entry) {
236 qeth_free_buffer_pool(card);
237 return -ENOMEM;
238 }
239 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
240 ptr = (void *) __get_free_page(GFP_KERNEL);
241 if (!ptr) {
242 while (j > 0)
243 free_page((unsigned long)
244 pool_entry->elements[--j]);
245 kfree(pool_entry);
246 qeth_free_buffer_pool(card);
247 return -ENOMEM;
248 }
249 pool_entry->elements[j] = ptr;
250 }
251 list_add(&pool_entry->init_list,
252 &card->qdio.init_pool.entry_list);
253 }
254 return 0;
255 }
256
257 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
258 {
259 QETH_DBF_TEXT(TRACE, 2, "realcbp");
260
261 if ((card->state != CARD_STATE_DOWN) &&
262 (card->state != CARD_STATE_RECOVER))
263 return -EPERM;
264
265 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
266 qeth_clear_working_pool_list(card);
267 qeth_free_buffer_pool(card);
268 card->qdio.in_buf_pool.buf_count = bufcnt;
269 card->qdio.init_pool.buf_count = bufcnt;
270 return qeth_alloc_buffer_pool(card);
271 }
272
273 int qeth_set_large_send(struct qeth_card *card,
274 enum qeth_large_send_types type)
275 {
276 int rc = 0;
277
278 if (card->dev == NULL) {
279 card->options.large_send = type;
280 return 0;
281 }
282 if (card->state == CARD_STATE_UP)
283 netif_tx_disable(card->dev);
284 card->options.large_send = type;
285 switch (card->options.large_send) {
286 case QETH_LARGE_SEND_TSO:
287 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
288 card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
289 NETIF_F_HW_CSUM;
290 } else {
291 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
292 NETIF_F_HW_CSUM);
293 card->options.large_send = QETH_LARGE_SEND_NO;
294 rc = -EOPNOTSUPP;
295 }
296 break;
297 default: /* includes QETH_LARGE_SEND_NO */
298 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
299 NETIF_F_HW_CSUM);
300 break;
301 }
302 if (card->state == CARD_STATE_UP)
303 netif_wake_queue(card->dev);
304 return rc;
305 }
306 EXPORT_SYMBOL_GPL(qeth_set_large_send);
307
308 static int qeth_issue_next_read(struct qeth_card *card)
309 {
310 int rc;
311 struct qeth_cmd_buffer *iob;
312
313 QETH_DBF_TEXT(TRACE, 5, "issnxrd");
314 if (card->read.state != CH_STATE_UP)
315 return -EIO;
316 iob = qeth_get_buffer(&card->read);
317 if (!iob) {
318 dev_warn(&card->gdev->dev, "The qeth device driver "
319 "failed to recover an error on the device\n");
320 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
321 "available\n", dev_name(&card->gdev->dev));
322 return -ENOMEM;
323 }
324 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
325 QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
326 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
327 (addr_t) iob, 0, 0);
328 if (rc) {
329 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
330 "rc=%i\n", dev_name(&card->gdev->dev), rc);
331 atomic_set(&card->read.irq_pending, 0);
332 qeth_schedule_recovery(card);
333 wake_up(&card->wait_q);
334 }
335 return rc;
336 }
337
338 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
339 {
340 struct qeth_reply *reply;
341
342 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
343 if (reply) {
344 atomic_set(&reply->refcnt, 1);
345 atomic_set(&reply->received, 0);
346 reply->card = card;
347 };
348 return reply;
349 }
350
351 static void qeth_get_reply(struct qeth_reply *reply)
352 {
353 WARN_ON(atomic_read(&reply->refcnt) <= 0);
354 atomic_inc(&reply->refcnt);
355 }
356
357 static void qeth_put_reply(struct qeth_reply *reply)
358 {
359 WARN_ON(atomic_read(&reply->refcnt) <= 0);
360 if (atomic_dec_and_test(&reply->refcnt))
361 kfree(reply);
362 }
363
364 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
365 struct qeth_card *card)
366 {
367 char *ipa_name;
368 int com = cmd->hdr.command;
369 ipa_name = qeth_get_ipa_cmd_name(com);
370 if (rc)
371 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
372 ipa_name, com, QETH_CARD_IFNAME(card),
373 rc, qeth_get_ipa_msg(rc));
374 else
375 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
376 ipa_name, com, QETH_CARD_IFNAME(card));
377 }
378
379 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
380 struct qeth_cmd_buffer *iob)
381 {
382 struct qeth_ipa_cmd *cmd = NULL;
383
384 QETH_DBF_TEXT(TRACE, 5, "chkipad");
385 if (IS_IPA(iob->data)) {
386 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
387 if (IS_IPA_REPLY(cmd)) {
388 if (cmd->hdr.command < IPA_CMD_SETCCID ||
389 cmd->hdr.command > IPA_CMD_MODCCID)
390 qeth_issue_ipa_msg(cmd,
391 cmd->hdr.return_code, card);
392 return cmd;
393 } else {
394 switch (cmd->hdr.command) {
395 case IPA_CMD_STOPLAN:
396 dev_warn(&card->gdev->dev,
397 "The link for interface %s on CHPID"
398 " 0x%X failed\n",
399 QETH_CARD_IFNAME(card),
400 card->info.chpid);
401 card->lan_online = 0;
402 if (card->dev && netif_carrier_ok(card->dev))
403 netif_carrier_off(card->dev);
404 return NULL;
405 case IPA_CMD_STARTLAN:
406 dev_info(&card->gdev->dev,
407 "The link for %s on CHPID 0x%X has"
408 " been restored\n",
409 QETH_CARD_IFNAME(card),
410 card->info.chpid);
411 netif_carrier_on(card->dev);
412 card->lan_online = 1;
413 qeth_schedule_recovery(card);
414 return NULL;
415 case IPA_CMD_MODCCID:
416 return cmd;
417 case IPA_CMD_REGISTER_LOCAL_ADDR:
418 QETH_DBF_TEXT(TRACE, 3, "irla");
419 break;
420 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
421 QETH_DBF_TEXT(TRACE, 3, "urla");
422 break;
423 default:
424 QETH_DBF_MESSAGE(2, "Received data is IPA "
425 "but not a reply!\n");
426 break;
427 }
428 }
429 }
430 return cmd;
431 }
432
433 void qeth_clear_ipacmd_list(struct qeth_card *card)
434 {
435 struct qeth_reply *reply, *r;
436 unsigned long flags;
437
438 QETH_DBF_TEXT(TRACE, 4, "clipalst");
439
440 spin_lock_irqsave(&card->lock, flags);
441 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
442 qeth_get_reply(reply);
443 reply->rc = -EIO;
444 atomic_inc(&reply->received);
445 list_del_init(&reply->list);
446 wake_up(&reply->wait_q);
447 qeth_put_reply(reply);
448 }
449 spin_unlock_irqrestore(&card->lock, flags);
450 }
451 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
452
453 static int qeth_check_idx_response(unsigned char *buffer)
454 {
455 if (!buffer)
456 return 0;
457
458 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
459 if ((buffer[2] & 0xc0) == 0xc0) {
460 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
461 "with cause code 0x%02x%s\n",
462 buffer[4],
463 ((buffer[4] == 0x22) ?
464 " -- try another portname" : ""));
465 QETH_DBF_TEXT(TRACE, 2, "ckidxres");
466 QETH_DBF_TEXT(TRACE, 2, " idxterm");
467 QETH_DBF_TEXT_(TRACE, 2, " rc%d", -EIO);
468 return -EIO;
469 }
470 return 0;
471 }
472
473 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
474 __u32 len)
475 {
476 struct qeth_card *card;
477
478 QETH_DBF_TEXT(TRACE, 4, "setupccw");
479 card = CARD_FROM_CDEV(channel->ccwdev);
480 if (channel == &card->read)
481 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
482 else
483 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
484 channel->ccw.count = len;
485 channel->ccw.cda = (__u32) __pa(iob);
486 }
487
488 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
489 {
490 __u8 index;
491
492 QETH_DBF_TEXT(TRACE, 6, "getbuff");
493 index = channel->io_buf_no;
494 do {
495 if (channel->iob[index].state == BUF_STATE_FREE) {
496 channel->iob[index].state = BUF_STATE_LOCKED;
497 channel->io_buf_no = (channel->io_buf_no + 1) %
498 QETH_CMD_BUFFER_NO;
499 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
500 return channel->iob + index;
501 }
502 index = (index + 1) % QETH_CMD_BUFFER_NO;
503 } while (index != channel->io_buf_no);
504
505 return NULL;
506 }
507
508 void qeth_release_buffer(struct qeth_channel *channel,
509 struct qeth_cmd_buffer *iob)
510 {
511 unsigned long flags;
512
513 QETH_DBF_TEXT(TRACE, 6, "relbuff");
514 spin_lock_irqsave(&channel->iob_lock, flags);
515 memset(iob->data, 0, QETH_BUFSIZE);
516 iob->state = BUF_STATE_FREE;
517 iob->callback = qeth_send_control_data_cb;
518 iob->rc = 0;
519 spin_unlock_irqrestore(&channel->iob_lock, flags);
520 }
521 EXPORT_SYMBOL_GPL(qeth_release_buffer);
522
523 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
524 {
525 struct qeth_cmd_buffer *buffer = NULL;
526 unsigned long flags;
527
528 spin_lock_irqsave(&channel->iob_lock, flags);
529 buffer = __qeth_get_buffer(channel);
530 spin_unlock_irqrestore(&channel->iob_lock, flags);
531 return buffer;
532 }
533
534 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
535 {
536 struct qeth_cmd_buffer *buffer;
537 wait_event(channel->wait_q,
538 ((buffer = qeth_get_buffer(channel)) != NULL));
539 return buffer;
540 }
541 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
542
543 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
544 {
545 int cnt;
546
547 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
548 qeth_release_buffer(channel, &channel->iob[cnt]);
549 channel->buf_no = 0;
550 channel->io_buf_no = 0;
551 }
552 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
553
554 static void qeth_send_control_data_cb(struct qeth_channel *channel,
555 struct qeth_cmd_buffer *iob)
556 {
557 struct qeth_card *card;
558 struct qeth_reply *reply, *r;
559 struct qeth_ipa_cmd *cmd;
560 unsigned long flags;
561 int keep_reply;
562
563 QETH_DBF_TEXT(TRACE, 4, "sndctlcb");
564
565 card = CARD_FROM_CDEV(channel->ccwdev);
566 if (qeth_check_idx_response(iob->data)) {
567 qeth_clear_ipacmd_list(card);
568 if (((iob->data[2] & 0xc0) == 0xc0) && iob->data[4] == 0xf6)
569 dev_err(&card->gdev->dev,
570 "The qeth device is not configured "
571 "for the OSI layer required by z/VM\n");
572 qeth_schedule_recovery(card);
573 goto out;
574 }
575
576 cmd = qeth_check_ipa_data(card, iob);
577 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
578 goto out;
579 /*in case of OSN : check if cmd is set */
580 if (card->info.type == QETH_CARD_TYPE_OSN &&
581 cmd &&
582 cmd->hdr.command != IPA_CMD_STARTLAN &&
583 card->osn_info.assist_cb != NULL) {
584 card->osn_info.assist_cb(card->dev, cmd);
585 goto out;
586 }
587
588 spin_lock_irqsave(&card->lock, flags);
589 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
590 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
591 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
592 qeth_get_reply(reply);
593 list_del_init(&reply->list);
594 spin_unlock_irqrestore(&card->lock, flags);
595 keep_reply = 0;
596 if (reply->callback != NULL) {
597 if (cmd) {
598 reply->offset = (__u16)((char *)cmd -
599 (char *)iob->data);
600 keep_reply = reply->callback(card,
601 reply,
602 (unsigned long)cmd);
603 } else
604 keep_reply = reply->callback(card,
605 reply,
606 (unsigned long)iob);
607 }
608 if (cmd)
609 reply->rc = (u16) cmd->hdr.return_code;
610 else if (iob->rc)
611 reply->rc = iob->rc;
612 if (keep_reply) {
613 spin_lock_irqsave(&card->lock, flags);
614 list_add_tail(&reply->list,
615 &card->cmd_waiter_list);
616 spin_unlock_irqrestore(&card->lock, flags);
617 } else {
618 atomic_inc(&reply->received);
619 wake_up(&reply->wait_q);
620 }
621 qeth_put_reply(reply);
622 goto out;
623 }
624 }
625 spin_unlock_irqrestore(&card->lock, flags);
626 out:
627 memcpy(&card->seqno.pdu_hdr_ack,
628 QETH_PDU_HEADER_SEQ_NO(iob->data),
629 QETH_SEQ_NO_LENGTH);
630 qeth_release_buffer(channel, iob);
631 }
632
633 static int qeth_setup_channel(struct qeth_channel *channel)
634 {
635 int cnt;
636
637 QETH_DBF_TEXT(SETUP, 2, "setupch");
638 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
639 channel->iob[cnt].data = (char *)
640 kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
641 if (channel->iob[cnt].data == NULL)
642 break;
643 channel->iob[cnt].state = BUF_STATE_FREE;
644 channel->iob[cnt].channel = channel;
645 channel->iob[cnt].callback = qeth_send_control_data_cb;
646 channel->iob[cnt].rc = 0;
647 }
648 if (cnt < QETH_CMD_BUFFER_NO) {
649 while (cnt-- > 0)
650 kfree(channel->iob[cnt].data);
651 return -ENOMEM;
652 }
653 channel->buf_no = 0;
654 channel->io_buf_no = 0;
655 atomic_set(&channel->irq_pending, 0);
656 spin_lock_init(&channel->iob_lock);
657
658 init_waitqueue_head(&channel->wait_q);
659 return 0;
660 }
661
662 static int qeth_set_thread_start_bit(struct qeth_card *card,
663 unsigned long thread)
664 {
665 unsigned long flags;
666
667 spin_lock_irqsave(&card->thread_mask_lock, flags);
668 if (!(card->thread_allowed_mask & thread) ||
669 (card->thread_start_mask & thread)) {
670 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
671 return -EPERM;
672 }
673 card->thread_start_mask |= thread;
674 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
675 return 0;
676 }
677
678 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
679 {
680 unsigned long flags;
681
682 spin_lock_irqsave(&card->thread_mask_lock, flags);
683 card->thread_start_mask &= ~thread;
684 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
685 wake_up(&card->wait_q);
686 }
687 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
688
689 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
690 {
691 unsigned long flags;
692
693 spin_lock_irqsave(&card->thread_mask_lock, flags);
694 card->thread_running_mask &= ~thread;
695 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
696 wake_up(&card->wait_q);
697 }
698 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
699
700 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
701 {
702 unsigned long flags;
703 int rc = 0;
704
705 spin_lock_irqsave(&card->thread_mask_lock, flags);
706 if (card->thread_start_mask & thread) {
707 if ((card->thread_allowed_mask & thread) &&
708 !(card->thread_running_mask & thread)) {
709 rc = 1;
710 card->thread_start_mask &= ~thread;
711 card->thread_running_mask |= thread;
712 } else
713 rc = -EPERM;
714 }
715 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
716 return rc;
717 }
718
719 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
720 {
721 int rc = 0;
722
723 wait_event(card->wait_q,
724 (rc = __qeth_do_run_thread(card, thread)) >= 0);
725 return rc;
726 }
727 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
728
729 void qeth_schedule_recovery(struct qeth_card *card)
730 {
731 QETH_DBF_TEXT(TRACE, 2, "startrec");
732 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
733 schedule_work(&card->kernel_thread_starter);
734 }
735 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
736
737 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
738 {
739 int dstat, cstat;
740 char *sense;
741
742 sense = (char *) irb->ecw;
743 cstat = irb->scsw.cmd.cstat;
744 dstat = irb->scsw.cmd.dstat;
745
746 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
747 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
748 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
749 QETH_DBF_TEXT(TRACE, 2, "CGENCHK");
750 dev_warn(&cdev->dev, "The qeth device driver "
751 "failed to recover an error on the device\n");
752 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x ",
753 dev_name(&cdev->dev), dstat, cstat);
754 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
755 16, 1, irb, 64, 1);
756 return 1;
757 }
758
759 if (dstat & DEV_STAT_UNIT_CHECK) {
760 if (sense[SENSE_RESETTING_EVENT_BYTE] &
761 SENSE_RESETTING_EVENT_FLAG) {
762 QETH_DBF_TEXT(TRACE, 2, "REVIND");
763 return 1;
764 }
765 if (sense[SENSE_COMMAND_REJECT_BYTE] &
766 SENSE_COMMAND_REJECT_FLAG) {
767 QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
768 return 1;
769 }
770 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
771 QETH_DBF_TEXT(TRACE, 2, "AFFE");
772 return 1;
773 }
774 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
775 QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
776 return 0;
777 }
778 QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
779 return 1;
780 }
781 return 0;
782 }
783
784 static long __qeth_check_irb_error(struct ccw_device *cdev,
785 unsigned long intparm, struct irb *irb)
786 {
787 if (!IS_ERR(irb))
788 return 0;
789
790 switch (PTR_ERR(irb)) {
791 case -EIO:
792 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
793 dev_name(&cdev->dev));
794 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
795 QETH_DBF_TEXT_(TRACE, 2, " rc%d", -EIO);
796 break;
797 case -ETIMEDOUT:
798 dev_warn(&cdev->dev, "A hardware operation timed out"
799 " on the device\n");
800 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
801 QETH_DBF_TEXT_(TRACE, 2, " rc%d", -ETIMEDOUT);
802 if (intparm == QETH_RCD_PARM) {
803 struct qeth_card *card = CARD_FROM_CDEV(cdev);
804
805 if (card && (card->data.ccwdev == cdev)) {
806 card->data.state = CH_STATE_DOWN;
807 wake_up(&card->wait_q);
808 }
809 }
810 break;
811 default:
812 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
813 dev_name(&cdev->dev), PTR_ERR(irb));
814 QETH_DBF_TEXT(TRACE, 2, "ckirberr");
815 QETH_DBF_TEXT(TRACE, 2, " rc???");
816 }
817 return PTR_ERR(irb);
818 }
819
820 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
821 struct irb *irb)
822 {
823 int rc;
824 int cstat, dstat;
825 struct qeth_cmd_buffer *buffer;
826 struct qeth_channel *channel;
827 struct qeth_card *card;
828 struct qeth_cmd_buffer *iob;
829 __u8 index;
830
831 QETH_DBF_TEXT(TRACE, 5, "irq");
832
833 if (__qeth_check_irb_error(cdev, intparm, irb))
834 return;
835 cstat = irb->scsw.cmd.cstat;
836 dstat = irb->scsw.cmd.dstat;
837
838 card = CARD_FROM_CDEV(cdev);
839 if (!card)
840 return;
841
842 if (card->read.ccwdev == cdev) {
843 channel = &card->read;
844 QETH_DBF_TEXT(TRACE, 5, "read");
845 } else if (card->write.ccwdev == cdev) {
846 channel = &card->write;
847 QETH_DBF_TEXT(TRACE, 5, "write");
848 } else {
849 channel = &card->data;
850 QETH_DBF_TEXT(TRACE, 5, "data");
851 }
852 atomic_set(&channel->irq_pending, 0);
853
854 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
855 channel->state = CH_STATE_STOPPED;
856
857 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
858 channel->state = CH_STATE_HALTED;
859
860 /*let's wake up immediately on data channel*/
861 if ((channel == &card->data) && (intparm != 0) &&
862 (intparm != QETH_RCD_PARM))
863 goto out;
864
865 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
866 QETH_DBF_TEXT(TRACE, 6, "clrchpar");
867 /* we don't have to handle this further */
868 intparm = 0;
869 }
870 if (intparm == QETH_HALT_CHANNEL_PARM) {
871 QETH_DBF_TEXT(TRACE, 6, "hltchpar");
872 /* we don't have to handle this further */
873 intparm = 0;
874 }
875 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
876 (dstat & DEV_STAT_UNIT_CHECK) ||
877 (cstat)) {
878 if (irb->esw.esw0.erw.cons) {
879 dev_warn(&channel->ccwdev->dev,
880 "The qeth device driver failed to recover "
881 "an error on the device\n");
882 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
883 "0x%X dstat 0x%X\n",
884 dev_name(&channel->ccwdev->dev), cstat, dstat);
885 print_hex_dump(KERN_WARNING, "qeth: irb ",
886 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
887 print_hex_dump(KERN_WARNING, "qeth: sense data ",
888 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
889 }
890 if (intparm == QETH_RCD_PARM) {
891 channel->state = CH_STATE_DOWN;
892 goto out;
893 }
894 rc = qeth_get_problem(cdev, irb);
895 if (rc) {
896 qeth_clear_ipacmd_list(card);
897 qeth_schedule_recovery(card);
898 goto out;
899 }
900 }
901
902 if (intparm == QETH_RCD_PARM) {
903 channel->state = CH_STATE_RCD_DONE;
904 goto out;
905 }
906 if (intparm) {
907 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
908 buffer->state = BUF_STATE_PROCESSED;
909 }
910 if (channel == &card->data)
911 return;
912 if (channel == &card->read &&
913 channel->state == CH_STATE_UP)
914 qeth_issue_next_read(card);
915
916 iob = channel->iob;
917 index = channel->buf_no;
918 while (iob[index].state == BUF_STATE_PROCESSED) {
919 if (iob[index].callback != NULL)
920 iob[index].callback(channel, iob + index);
921
922 index = (index + 1) % QETH_CMD_BUFFER_NO;
923 }
924 channel->buf_no = index;
925 out:
926 wake_up(&card->wait_q);
927 return;
928 }
929
930 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
931 struct qeth_qdio_out_buffer *buf)
932 {
933 int i;
934 struct sk_buff *skb;
935
936 /* is PCI flag set on buffer? */
937 if (buf->buffer->element[0].flags & 0x40)
938 atomic_dec(&queue->set_pci_flags_count);
939
940 skb = skb_dequeue(&buf->skb_list);
941 while (skb) {
942 atomic_dec(&skb->users);
943 dev_kfree_skb_any(skb);
944 skb = skb_dequeue(&buf->skb_list);
945 }
946 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
947 if (buf->buffer->element[i].addr && buf->is_header[i])
948 kmem_cache_free(qeth_core_header_cache,
949 buf->buffer->element[i].addr);
950 buf->is_header[i] = 0;
951 buf->buffer->element[i].length = 0;
952 buf->buffer->element[i].addr = NULL;
953 buf->buffer->element[i].flags = 0;
954 }
955 buf->next_element_to_fill = 0;
956 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
957 }
958
959 void qeth_clear_qdio_buffers(struct qeth_card *card)
960 {
961 int i, j;
962
963 QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
964 /* clear outbound buffers to free skbs */
965 for (i = 0; i < card->qdio.no_out_queues; ++i)
966 if (card->qdio.out_qs[i]) {
967 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
968 qeth_clear_output_buffer(card->qdio.out_qs[i],
969 &card->qdio.out_qs[i]->bufs[j]);
970 }
971 }
972 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
973
974 static void qeth_free_buffer_pool(struct qeth_card *card)
975 {
976 struct qeth_buffer_pool_entry *pool_entry, *tmp;
977 int i = 0;
978 QETH_DBF_TEXT(TRACE, 5, "freepool");
979 list_for_each_entry_safe(pool_entry, tmp,
980 &card->qdio.init_pool.entry_list, init_list){
981 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
982 free_page((unsigned long)pool_entry->elements[i]);
983 list_del(&pool_entry->init_list);
984 kfree(pool_entry);
985 }
986 }
987
988 static void qeth_free_qdio_buffers(struct qeth_card *card)
989 {
990 int i, j;
991
992 QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
993 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
994 QETH_QDIO_UNINITIALIZED)
995 return;
996 kfree(card->qdio.in_q);
997 card->qdio.in_q = NULL;
998 /* inbound buffer pool */
999 qeth_free_buffer_pool(card);
1000 /* free outbound qdio_qs */
1001 if (card->qdio.out_qs) {
1002 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1003 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1004 qeth_clear_output_buffer(card->qdio.out_qs[i],
1005 &card->qdio.out_qs[i]->bufs[j]);
1006 kfree(card->qdio.out_qs[i]);
1007 }
1008 kfree(card->qdio.out_qs);
1009 card->qdio.out_qs = NULL;
1010 }
1011 }
1012
1013 static void qeth_clean_channel(struct qeth_channel *channel)
1014 {
1015 int cnt;
1016
1017 QETH_DBF_TEXT(SETUP, 2, "freech");
1018 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1019 kfree(channel->iob[cnt].data);
1020 }
1021
1022 static int qeth_is_1920_device(struct qeth_card *card)
1023 {
1024 int single_queue = 0;
1025 struct ccw_device *ccwdev;
1026 struct channelPath_dsc {
1027 u8 flags;
1028 u8 lsn;
1029 u8 desc;
1030 u8 chpid;
1031 u8 swla;
1032 u8 zeroes;
1033 u8 chla;
1034 u8 chpp;
1035 } *chp_dsc;
1036
1037 QETH_DBF_TEXT(SETUP, 2, "chk_1920");
1038
1039 ccwdev = card->data.ccwdev;
1040 chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
1041 if (chp_dsc != NULL) {
1042 /* CHPP field bit 6 == 1 -> single queue */
1043 single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
1044 kfree(chp_dsc);
1045 }
1046 QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue);
1047 return single_queue;
1048 }
1049
1050 static void qeth_init_qdio_info(struct qeth_card *card)
1051 {
1052 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1053 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1054 /* inbound */
1055 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1056 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1057 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1058 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1059 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1060 }
1061
1062 static void qeth_set_intial_options(struct qeth_card *card)
1063 {
1064 card->options.route4.type = NO_ROUTER;
1065 card->options.route6.type = NO_ROUTER;
1066 card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
1067 card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
1068 card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
1069 card->options.fake_broadcast = 0;
1070 card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1071 card->options.performance_stats = 0;
1072 card->options.rx_sg_cb = QETH_RX_SG_CB;
1073 }
1074
1075 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1076 {
1077 unsigned long flags;
1078 int rc = 0;
1079
1080 spin_lock_irqsave(&card->thread_mask_lock, flags);
1081 QETH_DBF_TEXT_(TRACE, 4, " %02x%02x%02x",
1082 (u8) card->thread_start_mask,
1083 (u8) card->thread_allowed_mask,
1084 (u8) card->thread_running_mask);
1085 rc = (card->thread_start_mask & thread);
1086 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1087 return rc;
1088 }
1089
1090 static void qeth_start_kernel_thread(struct work_struct *work)
1091 {
1092 struct qeth_card *card = container_of(work, struct qeth_card,
1093 kernel_thread_starter);
1094 QETH_DBF_TEXT(TRACE , 2, "strthrd");
1095
1096 if (card->read.state != CH_STATE_UP &&
1097 card->write.state != CH_STATE_UP)
1098 return;
1099 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
1100 kthread_run(card->discipline.recover, (void *) card,
1101 "qeth_recover");
1102 }
1103
1104 static int qeth_setup_card(struct qeth_card *card)
1105 {
1106
1107 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1108 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1109
1110 card->read.state = CH_STATE_DOWN;
1111 card->write.state = CH_STATE_DOWN;
1112 card->data.state = CH_STATE_DOWN;
1113 card->state = CARD_STATE_DOWN;
1114 card->lan_online = 0;
1115 card->use_hard_stop = 0;
1116 card->dev = NULL;
1117 spin_lock_init(&card->vlanlock);
1118 spin_lock_init(&card->mclock);
1119 card->vlangrp = NULL;
1120 spin_lock_init(&card->lock);
1121 spin_lock_init(&card->ip_lock);
1122 spin_lock_init(&card->thread_mask_lock);
1123 card->thread_start_mask = 0;
1124 card->thread_allowed_mask = 0;
1125 card->thread_running_mask = 0;
1126 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1127 INIT_LIST_HEAD(&card->ip_list);
1128 card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
1129 if (!card->ip_tbd_list) {
1130 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1131 return -ENOMEM;
1132 }
1133 INIT_LIST_HEAD(card->ip_tbd_list);
1134 INIT_LIST_HEAD(&card->cmd_waiter_list);
1135 init_waitqueue_head(&card->wait_q);
1136 /* intial options */
1137 qeth_set_intial_options(card);
1138 /* IP address takeover */
1139 INIT_LIST_HEAD(&card->ipato.entries);
1140 card->ipato.enabled = 0;
1141 card->ipato.invert4 = 0;
1142 card->ipato.invert6 = 0;
1143 /* init QDIO stuff */
1144 qeth_init_qdio_info(card);
1145 return 0;
1146 }
1147
1148 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1149 {
1150 struct qeth_card *card = container_of(slr, struct qeth_card,
1151 qeth_service_level);
1152 seq_printf(m, "qeth: %s firmware level %s\n", CARD_BUS_ID(card),
1153 card->info.mcl_level);
1154 }
1155
1156 static struct qeth_card *qeth_alloc_card(void)
1157 {
1158 struct qeth_card *card;
1159
1160 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1161 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1162 if (!card)
1163 return NULL;
1164 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1165 if (qeth_setup_channel(&card->read)) {
1166 kfree(card);
1167 return NULL;
1168 }
1169 if (qeth_setup_channel(&card->write)) {
1170 qeth_clean_channel(&card->read);
1171 kfree(card);
1172 return NULL;
1173 }
1174 card->options.layer2 = -1;
1175 card->qeth_service_level.seq_print = qeth_core_sl_print;
1176 register_service_level(&card->qeth_service_level);
1177 return card;
1178 }
1179
1180 static int qeth_determine_card_type(struct qeth_card *card)
1181 {
1182 int i = 0;
1183
1184 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1185
1186 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1187 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1188 while (known_devices[i][4]) {
1189 if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
1190 (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
1191 card->info.type = known_devices[i][4];
1192 card->qdio.no_out_queues = known_devices[i][8];
1193 card->info.is_multicast_different = known_devices[i][9];
1194 if (qeth_is_1920_device(card)) {
1195 dev_info(&card->gdev->dev,
1196 "Priority Queueing not supported\n");
1197 card->qdio.no_out_queues = 1;
1198 card->qdio.default_out_queue = 0;
1199 }
1200 return 0;
1201 }
1202 i++;
1203 }
1204 card->info.type = QETH_CARD_TYPE_UNKNOWN;
1205 dev_err(&card->gdev->dev, "The adapter hardware is of an "
1206 "unknown type\n");
1207 return -ENOENT;
1208 }
1209
1210 static int qeth_clear_channel(struct qeth_channel *channel)
1211 {
1212 unsigned long flags;
1213 struct qeth_card *card;
1214 int rc;
1215
1216 QETH_DBF_TEXT(TRACE, 3, "clearch");
1217 card = CARD_FROM_CDEV(channel->ccwdev);
1218 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1219 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1220 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1221
1222 if (rc)
1223 return rc;
1224 rc = wait_event_interruptible_timeout(card->wait_q,
1225 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1226 if (rc == -ERESTARTSYS)
1227 return rc;
1228 if (channel->state != CH_STATE_STOPPED)
1229 return -ETIME;
1230 channel->state = CH_STATE_DOWN;
1231 return 0;
1232 }
1233
1234 static int qeth_halt_channel(struct qeth_channel *channel)
1235 {
1236 unsigned long flags;
1237 struct qeth_card *card;
1238 int rc;
1239
1240 QETH_DBF_TEXT(TRACE, 3, "haltch");
1241 card = CARD_FROM_CDEV(channel->ccwdev);
1242 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1243 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1244 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1245
1246 if (rc)
1247 return rc;
1248 rc = wait_event_interruptible_timeout(card->wait_q,
1249 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1250 if (rc == -ERESTARTSYS)
1251 return rc;
1252 if (channel->state != CH_STATE_HALTED)
1253 return -ETIME;
1254 return 0;
1255 }
1256
1257 static int qeth_halt_channels(struct qeth_card *card)
1258 {
1259 int rc1 = 0, rc2 = 0, rc3 = 0;
1260
1261 QETH_DBF_TEXT(TRACE, 3, "haltchs");
1262 rc1 = qeth_halt_channel(&card->read);
1263 rc2 = qeth_halt_channel(&card->write);
1264 rc3 = qeth_halt_channel(&card->data);
1265 if (rc1)
1266 return rc1;
1267 if (rc2)
1268 return rc2;
1269 return rc3;
1270 }
1271
1272 static int qeth_clear_channels(struct qeth_card *card)
1273 {
1274 int rc1 = 0, rc2 = 0, rc3 = 0;
1275
1276 QETH_DBF_TEXT(TRACE, 3, "clearchs");
1277 rc1 = qeth_clear_channel(&card->read);
1278 rc2 = qeth_clear_channel(&card->write);
1279 rc3 = qeth_clear_channel(&card->data);
1280 if (rc1)
1281 return rc1;
1282 if (rc2)
1283 return rc2;
1284 return rc3;
1285 }
1286
1287 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1288 {
1289 int rc = 0;
1290
1291 QETH_DBF_TEXT(TRACE, 3, "clhacrd");
1292 QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));
1293
1294 if (halt)
1295 rc = qeth_halt_channels(card);
1296 if (rc)
1297 return rc;
1298 return qeth_clear_channels(card);
1299 }
1300
1301 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1302 {
1303 int rc = 0;
1304
1305 QETH_DBF_TEXT(TRACE, 3, "qdioclr");
1306 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1307 QETH_QDIO_CLEANING)) {
1308 case QETH_QDIO_ESTABLISHED:
1309 if (card->info.type == QETH_CARD_TYPE_IQD)
1310 rc = qdio_cleanup(CARD_DDEV(card),
1311 QDIO_FLAG_CLEANUP_USING_HALT);
1312 else
1313 rc = qdio_cleanup(CARD_DDEV(card),
1314 QDIO_FLAG_CLEANUP_USING_CLEAR);
1315 if (rc)
1316 QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
1317 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1318 break;
1319 case QETH_QDIO_CLEANING:
1320 return rc;
1321 default:
1322 break;
1323 }
1324 rc = qeth_clear_halt_card(card, use_halt);
1325 if (rc)
1326 QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
1327 card->state = CARD_STATE_DOWN;
1328 return rc;
1329 }
1330 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1331
1332 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1333 int *length)
1334 {
1335 struct ciw *ciw;
1336 char *rcd_buf;
1337 int ret;
1338 struct qeth_channel *channel = &card->data;
1339 unsigned long flags;
1340
1341 /*
1342 * scan for RCD command in extended SenseID data
1343 */
1344 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1345 if (!ciw || ciw->cmd == 0)
1346 return -EOPNOTSUPP;
1347 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1348 if (!rcd_buf)
1349 return -ENOMEM;
1350
1351 channel->ccw.cmd_code = ciw->cmd;
1352 channel->ccw.cda = (__u32) __pa(rcd_buf);
1353 channel->ccw.count = ciw->count;
1354 channel->ccw.flags = CCW_FLAG_SLI;
1355 channel->state = CH_STATE_RCD;
1356 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1357 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1358 QETH_RCD_PARM, LPM_ANYPATH, 0,
1359 QETH_RCD_TIMEOUT);
1360 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1361 if (!ret)
1362 wait_event(card->wait_q,
1363 (channel->state == CH_STATE_RCD_DONE ||
1364 channel->state == CH_STATE_DOWN));
1365 if (channel->state == CH_STATE_DOWN)
1366 ret = -EIO;
1367 else
1368 channel->state = CH_STATE_DOWN;
1369 if (ret) {
1370 kfree(rcd_buf);
1371 *buffer = NULL;
1372 *length = 0;
1373 } else {
1374 *length = ciw->count;
1375 *buffer = rcd_buf;
1376 }
1377 return ret;
1378 }
1379
1380 static int qeth_get_unitaddr(struct qeth_card *card)
1381 {
1382 int length;
1383 char *prcd;
1384 int rc;
1385
1386 QETH_DBF_TEXT(SETUP, 2, "getunit");
1387 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
1388 if (rc) {
1389 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
1390 dev_name(&card->gdev->dev), rc);
1391 return rc;
1392 }
1393 card->info.chpid = prcd[30];
1394 card->info.unit_addr2 = prcd[31];
1395 card->info.cula = prcd[63];
1396 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1397 (prcd[0x11] == _ascebc['M']));
1398 kfree(prcd);
1399 return 0;
1400 }
1401
1402 static void qeth_init_tokens(struct qeth_card *card)
1403 {
1404 card->token.issuer_rm_w = 0x00010103UL;
1405 card->token.cm_filter_w = 0x00010108UL;
1406 card->token.cm_connection_w = 0x0001010aUL;
1407 card->token.ulp_filter_w = 0x0001010bUL;
1408 card->token.ulp_connection_w = 0x0001010dUL;
1409 }
1410
1411 static void qeth_init_func_level(struct qeth_card *card)
1412 {
1413 if (card->ipato.enabled) {
1414 if (card->info.type == QETH_CARD_TYPE_IQD)
1415 card->info.func_level =
1416 QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
1417 else
1418 card->info.func_level =
1419 QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
1420 } else {
1421 if (card->info.type == QETH_CARD_TYPE_IQD)
1422 /*FIXME:why do we have same values for dis and ena for
1423 osae??? */
1424 card->info.func_level =
1425 QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
1426 else
1427 card->info.func_level =
1428 QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
1429 }
1430 }
1431
1432 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1433 void (*idx_reply_cb)(struct qeth_channel *,
1434 struct qeth_cmd_buffer *))
1435 {
1436 struct qeth_cmd_buffer *iob;
1437 unsigned long flags;
1438 int rc;
1439 struct qeth_card *card;
1440
1441 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1442 card = CARD_FROM_CDEV(channel->ccwdev);
1443 iob = qeth_get_buffer(channel);
1444 iob->callback = idx_reply_cb;
1445 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1446 channel->ccw.count = QETH_BUFSIZE;
1447 channel->ccw.cda = (__u32) __pa(iob->data);
1448
1449 wait_event(card->wait_q,
1450 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1451 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1452 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1453 rc = ccw_device_start(channel->ccwdev,
1454 &channel->ccw, (addr_t) iob, 0, 0);
1455 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1456
1457 if (rc) {
1458 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1459 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1460 atomic_set(&channel->irq_pending, 0);
1461 wake_up(&card->wait_q);
1462 return rc;
1463 }
1464 rc = wait_event_interruptible_timeout(card->wait_q,
1465 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1466 if (rc == -ERESTARTSYS)
1467 return rc;
1468 if (channel->state != CH_STATE_UP) {
1469 rc = -ETIME;
1470 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1471 qeth_clear_cmd_buffers(channel);
1472 } else
1473 rc = 0;
1474 return rc;
1475 }
1476
1477 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1478 void (*idx_reply_cb)(struct qeth_channel *,
1479 struct qeth_cmd_buffer *))
1480 {
1481 struct qeth_card *card;
1482 struct qeth_cmd_buffer *iob;
1483 unsigned long flags;
1484 __u16 temp;
1485 __u8 tmp;
1486 int rc;
1487 struct ccw_dev_id temp_devid;
1488
1489 card = CARD_FROM_CDEV(channel->ccwdev);
1490
1491 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1492
1493 iob = qeth_get_buffer(channel);
1494 iob->callback = idx_reply_cb;
1495 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1496 channel->ccw.count = IDX_ACTIVATE_SIZE;
1497 channel->ccw.cda = (__u32) __pa(iob->data);
1498 if (channel == &card->write) {
1499 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1500 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1501 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1502 card->seqno.trans_hdr++;
1503 } else {
1504 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1505 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1506 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1507 }
1508 tmp = ((__u8)card->info.portno) | 0x80;
1509 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1510 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1511 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1512 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1513 &card->info.func_level, sizeof(__u16));
1514 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1515 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1516 temp = (card->info.cula << 8) + card->info.unit_addr2;
1517 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1518
1519 wait_event(card->wait_q,
1520 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1521 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1522 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1523 rc = ccw_device_start(channel->ccwdev,
1524 &channel->ccw, (addr_t) iob, 0, 0);
1525 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1526
1527 if (rc) {
1528 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1529 rc);
1530 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1531 atomic_set(&channel->irq_pending, 0);
1532 wake_up(&card->wait_q);
1533 return rc;
1534 }
1535 rc = wait_event_interruptible_timeout(card->wait_q,
1536 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1537 if (rc == -ERESTARTSYS)
1538 return rc;
1539 if (channel->state != CH_STATE_ACTIVATING) {
1540 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1541 " failed to recover an error on the device\n");
1542 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1543 dev_name(&channel->ccwdev->dev));
1544 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1545 qeth_clear_cmd_buffers(channel);
1546 return -ETIME;
1547 }
1548 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1549 }
1550
1551 static int qeth_peer_func_level(int level)
1552 {
1553 if ((level & 0xff) == 8)
1554 return (level & 0xff) + 0x400;
1555 if (((level >> 8) & 3) == 1)
1556 return (level & 0xff) + 0x200;
1557 return level;
1558 }
1559
1560 static void qeth_idx_write_cb(struct qeth_channel *channel,
1561 struct qeth_cmd_buffer *iob)
1562 {
1563 struct qeth_card *card;
1564 __u16 temp;
1565
1566 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1567
1568 if (channel->state == CH_STATE_DOWN) {
1569 channel->state = CH_STATE_ACTIVATING;
1570 goto out;
1571 }
1572 card = CARD_FROM_CDEV(channel->ccwdev);
1573
1574 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1575 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1576 dev_err(&card->write.ccwdev->dev,
1577 "The adapter is used exclusively by another "
1578 "host\n");
1579 else
1580 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1581 " negative reply\n",
1582 dev_name(&card->write.ccwdev->dev));
1583 goto out;
1584 }
1585 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1586 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1587 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1588 "function level mismatch (sent: 0x%x, received: "
1589 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1590 card->info.func_level, temp);
1591 goto out;
1592 }
1593 channel->state = CH_STATE_UP;
1594 out:
1595 qeth_release_buffer(channel, iob);
1596 }
1597
1598 static void qeth_idx_read_cb(struct qeth_channel *channel,
1599 struct qeth_cmd_buffer *iob)
1600 {
1601 struct qeth_card *card;
1602 __u16 temp;
1603
1604 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1605 if (channel->state == CH_STATE_DOWN) {
1606 channel->state = CH_STATE_ACTIVATING;
1607 goto out;
1608 }
1609
1610 card = CARD_FROM_CDEV(channel->ccwdev);
1611 if (qeth_check_idx_response(iob->data))
1612 goto out;
1613
1614 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1615 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1616 dev_err(&card->write.ccwdev->dev,
1617 "The adapter is used exclusively by another "
1618 "host\n");
1619 else
1620 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1621 " negative reply\n",
1622 dev_name(&card->read.ccwdev->dev));
1623 goto out;
1624 }
1625
1626 /**
1627 * temporary fix for microcode bug
1628 * to revert it,replace OR by AND
1629 */
1630 if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1631 (card->info.type == QETH_CARD_TYPE_OSAE))
1632 card->info.portname_required = 1;
1633
1634 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1635 if (temp != qeth_peer_func_level(card->info.func_level)) {
1636 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1637 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1638 dev_name(&card->read.ccwdev->dev),
1639 card->info.func_level, temp);
1640 goto out;
1641 }
1642 memcpy(&card->token.issuer_rm_r,
1643 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1644 QETH_MPC_TOKEN_LENGTH);
1645 memcpy(&card->info.mcl_level[0],
1646 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1647 channel->state = CH_STATE_UP;
1648 out:
1649 qeth_release_buffer(channel, iob);
1650 }
1651
1652 void qeth_prepare_control_data(struct qeth_card *card, int len,
1653 struct qeth_cmd_buffer *iob)
1654 {
1655 qeth_setup_ccw(&card->write, iob->data, len);
1656 iob->callback = qeth_release_buffer;
1657
1658 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1659 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1660 card->seqno.trans_hdr++;
1661 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1662 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1663 card->seqno.pdu_hdr++;
1664 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1665 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1666 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1667 }
1668 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
1669
1670 int qeth_send_control_data(struct qeth_card *card, int len,
1671 struct qeth_cmd_buffer *iob,
1672 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1673 unsigned long),
1674 void *reply_param)
1675 {
1676 int rc;
1677 unsigned long flags;
1678 struct qeth_reply *reply = NULL;
1679 unsigned long timeout, event_timeout;
1680 struct qeth_ipa_cmd *cmd;
1681
1682 QETH_DBF_TEXT(TRACE, 2, "sendctl");
1683
1684 reply = qeth_alloc_reply(card);
1685 if (!reply) {
1686 return -ENOMEM;
1687 }
1688 reply->callback = reply_cb;
1689 reply->param = reply_param;
1690 if (card->state == CARD_STATE_DOWN)
1691 reply->seqno = QETH_IDX_COMMAND_SEQNO;
1692 else
1693 reply->seqno = card->seqno.ipa++;
1694 init_waitqueue_head(&reply->wait_q);
1695 spin_lock_irqsave(&card->lock, flags);
1696 list_add_tail(&reply->list, &card->cmd_waiter_list);
1697 spin_unlock_irqrestore(&card->lock, flags);
1698 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
1699
1700 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
1701 qeth_prepare_control_data(card, len, iob);
1702
1703 if (IS_IPA(iob->data))
1704 event_timeout = QETH_IPA_TIMEOUT;
1705 else
1706 event_timeout = QETH_TIMEOUT;
1707 timeout = jiffies + event_timeout;
1708
1709 QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
1710 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1711 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1712 (addr_t) iob, 0, 0);
1713 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1714 if (rc) {
1715 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
1716 "ccw_device_start rc = %i\n",
1717 dev_name(&card->write.ccwdev->dev), rc);
1718 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1719 spin_lock_irqsave(&card->lock, flags);
1720 list_del_init(&reply->list);
1721 qeth_put_reply(reply);
1722 spin_unlock_irqrestore(&card->lock, flags);
1723 qeth_release_buffer(iob->channel, iob);
1724 atomic_set(&card->write.irq_pending, 0);
1725 wake_up(&card->wait_q);
1726 return rc;
1727 }
1728
1729 /* we have only one long running ipassist, since we can ensure
1730 process context of this command we can sleep */
1731 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1732 if ((cmd->hdr.command == IPA_CMD_SETIP) &&
1733 (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
1734 if (!wait_event_timeout(reply->wait_q,
1735 atomic_read(&reply->received), event_timeout))
1736 goto time_err;
1737 } else {
1738 while (!atomic_read(&reply->received)) {
1739 if (time_after(jiffies, timeout))
1740 goto time_err;
1741 cpu_relax();
1742 };
1743 }
1744
1745 rc = reply->rc;
1746 qeth_put_reply(reply);
1747 return rc;
1748
1749 time_err:
1750 spin_lock_irqsave(&reply->card->lock, flags);
1751 list_del_init(&reply->list);
1752 spin_unlock_irqrestore(&reply->card->lock, flags);
1753 reply->rc = -ETIME;
1754 atomic_inc(&reply->received);
1755 wake_up(&reply->wait_q);
1756 rc = reply->rc;
1757 qeth_put_reply(reply);
1758 return rc;
1759 }
1760 EXPORT_SYMBOL_GPL(qeth_send_control_data);
1761
1762 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1763 unsigned long data)
1764 {
1765 struct qeth_cmd_buffer *iob;
1766
1767 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
1768
1769 iob = (struct qeth_cmd_buffer *) data;
1770 memcpy(&card->token.cm_filter_r,
1771 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1772 QETH_MPC_TOKEN_LENGTH);
1773 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1774 return 0;
1775 }
1776
1777 static int qeth_cm_enable(struct qeth_card *card)
1778 {
1779 int rc;
1780 struct qeth_cmd_buffer *iob;
1781
1782 QETH_DBF_TEXT(SETUP, 2, "cmenable");
1783
1784 iob = qeth_wait_for_buffer(&card->write);
1785 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
1786 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1787 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1788 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1789 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1790
1791 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
1792 qeth_cm_enable_cb, NULL);
1793 return rc;
1794 }
1795
1796 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1797 unsigned long data)
1798 {
1799
1800 struct qeth_cmd_buffer *iob;
1801
1802 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
1803
1804 iob = (struct qeth_cmd_buffer *) data;
1805 memcpy(&card->token.cm_connection_r,
1806 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
1807 QETH_MPC_TOKEN_LENGTH);
1808 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1809 return 0;
1810 }
1811
1812 static int qeth_cm_setup(struct qeth_card *card)
1813 {
1814 int rc;
1815 struct qeth_cmd_buffer *iob;
1816
1817 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
1818
1819 iob = qeth_wait_for_buffer(&card->write);
1820 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
1821 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
1822 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1823 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
1824 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
1825 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
1826 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
1827 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
1828 qeth_cm_setup_cb, NULL);
1829 return rc;
1830
1831 }
1832
1833 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
1834 {
1835 switch (card->info.type) {
1836 case QETH_CARD_TYPE_UNKNOWN:
1837 return 1500;
1838 case QETH_CARD_TYPE_IQD:
1839 return card->info.max_mtu;
1840 case QETH_CARD_TYPE_OSAE:
1841 switch (card->info.link_type) {
1842 case QETH_LINK_TYPE_HSTR:
1843 case QETH_LINK_TYPE_LANE_TR:
1844 return 2000;
1845 default:
1846 return 1492;
1847 }
1848 default:
1849 return 1500;
1850 }
1851 }
1852
1853 static inline int qeth_get_max_mtu_for_card(int cardtype)
1854 {
1855 switch (cardtype) {
1856
1857 case QETH_CARD_TYPE_UNKNOWN:
1858 case QETH_CARD_TYPE_OSAE:
1859 case QETH_CARD_TYPE_OSN:
1860 return 61440;
1861 case QETH_CARD_TYPE_IQD:
1862 return 57344;
1863 default:
1864 return 1500;
1865 }
1866 }
1867
1868 static inline int qeth_get_mtu_out_of_mpc(int cardtype)
1869 {
1870 switch (cardtype) {
1871 case QETH_CARD_TYPE_IQD:
1872 return 1;
1873 default:
1874 return 0;
1875 }
1876 }
1877
1878 static inline int qeth_get_mtu_outof_framesize(int framesize)
1879 {
1880 switch (framesize) {
1881 case 0x4000:
1882 return 8192;
1883 case 0x6000:
1884 return 16384;
1885 case 0xa000:
1886 return 32768;
1887 case 0xffff:
1888 return 57344;
1889 default:
1890 return 0;
1891 }
1892 }
1893
1894 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
1895 {
1896 switch (card->info.type) {
1897 case QETH_CARD_TYPE_OSAE:
1898 return ((mtu >= 576) && (mtu <= 61440));
1899 case QETH_CARD_TYPE_IQD:
1900 return ((mtu >= 576) &&
1901 (mtu <= card->info.max_mtu + 4096 - 32));
1902 case QETH_CARD_TYPE_OSN:
1903 case QETH_CARD_TYPE_UNKNOWN:
1904 default:
1905 return 1;
1906 }
1907 }
1908
1909 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1910 unsigned long data)
1911 {
1912
1913 __u16 mtu, framesize;
1914 __u16 len;
1915 __u8 link_type;
1916 struct qeth_cmd_buffer *iob;
1917
1918 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
1919
1920 iob = (struct qeth_cmd_buffer *) data;
1921 memcpy(&card->token.ulp_filter_r,
1922 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
1923 QETH_MPC_TOKEN_LENGTH);
1924 if (qeth_get_mtu_out_of_mpc(card->info.type)) {
1925 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
1926 mtu = qeth_get_mtu_outof_framesize(framesize);
1927 if (!mtu) {
1928 iob->rc = -EINVAL;
1929 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1930 return 0;
1931 }
1932 card->info.max_mtu = mtu;
1933 card->info.initial_mtu = mtu;
1934 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
1935 } else {
1936 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
1937 card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
1938 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1939 }
1940
1941 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
1942 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
1943 memcpy(&link_type,
1944 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
1945 card->info.link_type = link_type;
1946 } else
1947 card->info.link_type = 0;
1948 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1949 return 0;
1950 }
1951
1952 static int qeth_ulp_enable(struct qeth_card *card)
1953 {
1954 int rc;
1955 char prot_type;
1956 struct qeth_cmd_buffer *iob;
1957
1958 /*FIXME: trace view callbacks*/
1959 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
1960
1961 iob = qeth_wait_for_buffer(&card->write);
1962 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
1963
1964 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
1965 (__u8) card->info.portno;
1966 if (card->options.layer2)
1967 if (card->info.type == QETH_CARD_TYPE_OSN)
1968 prot_type = QETH_PROT_OSN2;
1969 else
1970 prot_type = QETH_PROT_LAYER2;
1971 else
1972 prot_type = QETH_PROT_TCPIP;
1973
1974 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
1975 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
1976 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
1977 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
1978 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
1979 memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
1980 card->info.portname, 9);
1981 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
1982 qeth_ulp_enable_cb, NULL);
1983 return rc;
1984
1985 }
1986
1987 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1988 unsigned long data)
1989 {
1990 struct qeth_cmd_buffer *iob;
1991
1992 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
1993
1994 iob = (struct qeth_cmd_buffer *) data;
1995 memcpy(&card->token.ulp_connection_r,
1996 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
1997 QETH_MPC_TOKEN_LENGTH);
1998 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
1999 return 0;
2000 }
2001
2002 static int qeth_ulp_setup(struct qeth_card *card)
2003 {
2004 int rc;
2005 __u16 temp;
2006 struct qeth_cmd_buffer *iob;
2007 struct ccw_dev_id dev_id;
2008
2009 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2010
2011 iob = qeth_wait_for_buffer(&card->write);
2012 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2013
2014 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2015 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2016 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2017 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2018 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2019 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2020
2021 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2022 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2023 temp = (card->info.cula << 8) + card->info.unit_addr2;
2024 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2025 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2026 qeth_ulp_setup_cb, NULL);
2027 return rc;
2028 }
2029
2030 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2031 {
2032 int i, j;
2033
2034 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2035
2036 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2037 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2038 return 0;
2039
2040 card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2041 GFP_KERNEL);
2042 if (!card->qdio.in_q)
2043 goto out_nomem;
2044 QETH_DBF_TEXT(SETUP, 2, "inq");
2045 QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2046 memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2047 /* give inbound qeth_qdio_buffers their qdio_buffers */
2048 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
2049 card->qdio.in_q->bufs[i].buffer =
2050 &card->qdio.in_q->qdio_bufs[i];
2051 /* inbound buffer pool */
2052 if (qeth_alloc_buffer_pool(card))
2053 goto out_freeinq;
2054 /* outbound */
2055 card->qdio.out_qs =
2056 kmalloc(card->qdio.no_out_queues *
2057 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2058 if (!card->qdio.out_qs)
2059 goto out_freepool;
2060 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2061 card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2062 GFP_KERNEL);
2063 if (!card->qdio.out_qs[i])
2064 goto out_freeoutq;
2065 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2066 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2067 memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
2068 card->qdio.out_qs[i]->queue_no = i;
2069 /* give outbound qeth_qdio_buffers their qdio_buffers */
2070 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2071 card->qdio.out_qs[i]->bufs[j].buffer =
2072 &card->qdio.out_qs[i]->qdio_bufs[j];
2073 skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
2074 skb_list);
2075 lockdep_set_class(
2076 &card->qdio.out_qs[i]->bufs[j].skb_list.lock,
2077 &qdio_out_skb_queue_key);
2078 INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
2079 }
2080 }
2081 return 0;
2082
2083 out_freeoutq:
2084 while (i > 0)
2085 kfree(card->qdio.out_qs[--i]);
2086 kfree(card->qdio.out_qs);
2087 card->qdio.out_qs = NULL;
2088 out_freepool:
2089 qeth_free_buffer_pool(card);
2090 out_freeinq:
2091 kfree(card->qdio.in_q);
2092 card->qdio.in_q = NULL;
2093 out_nomem:
2094 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2095 return -ENOMEM;
2096 }
2097
2098 static void qeth_create_qib_param_field(struct qeth_card *card,
2099 char *param_field)
2100 {
2101
2102 param_field[0] = _ascebc['P'];
2103 param_field[1] = _ascebc['C'];
2104 param_field[2] = _ascebc['I'];
2105 param_field[3] = _ascebc['T'];
2106 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2107 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2108 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2109 }
2110
2111 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2112 char *param_field)
2113 {
2114 param_field[16] = _ascebc['B'];
2115 param_field[17] = _ascebc['L'];
2116 param_field[18] = _ascebc['K'];
2117 param_field[19] = _ascebc['T'];
2118 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2119 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2120 *((unsigned int *) (&param_field[28])) =
2121 card->info.blkt.inter_packet_jumbo;
2122 }
2123
2124 static int qeth_qdio_activate(struct qeth_card *card)
2125 {
2126 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2127 return qdio_activate(CARD_DDEV(card));
2128 }
2129
2130 static int qeth_dm_act(struct qeth_card *card)
2131 {
2132 int rc;
2133 struct qeth_cmd_buffer *iob;
2134
2135 QETH_DBF_TEXT(SETUP, 2, "dmact");
2136
2137 iob = qeth_wait_for_buffer(&card->write);
2138 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2139
2140 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2141 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2142 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2143 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2144 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2145 return rc;
2146 }
2147
2148 static int qeth_mpc_initialize(struct qeth_card *card)
2149 {
2150 int rc;
2151
2152 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2153
2154 rc = qeth_issue_next_read(card);
2155 if (rc) {
2156 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2157 return rc;
2158 }
2159 rc = qeth_cm_enable(card);
2160 if (rc) {
2161 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2162 goto out_qdio;
2163 }
2164 rc = qeth_cm_setup(card);
2165 if (rc) {
2166 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2167 goto out_qdio;
2168 }
2169 rc = qeth_ulp_enable(card);
2170 if (rc) {
2171 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2172 goto out_qdio;
2173 }
2174 rc = qeth_ulp_setup(card);
2175 if (rc) {
2176 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2177 goto out_qdio;
2178 }
2179 rc = qeth_alloc_qdio_buffers(card);
2180 if (rc) {
2181 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2182 goto out_qdio;
2183 }
2184 rc = qeth_qdio_establish(card);
2185 if (rc) {
2186 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2187 qeth_free_qdio_buffers(card);
2188 goto out_qdio;
2189 }
2190 rc = qeth_qdio_activate(card);
2191 if (rc) {
2192 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2193 goto out_qdio;
2194 }
2195 rc = qeth_dm_act(card);
2196 if (rc) {
2197 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2198 goto out_qdio;
2199 }
2200
2201 return 0;
2202 out_qdio:
2203 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2204 return rc;
2205 }
2206
2207 static void qeth_print_status_with_portname(struct qeth_card *card)
2208 {
2209 char dbf_text[15];
2210 int i;
2211
2212 sprintf(dbf_text, "%s", card->info.portname + 1);
2213 for (i = 0; i < 8; i++)
2214 dbf_text[i] =
2215 (char) _ebcasc[(__u8) dbf_text[i]];
2216 dbf_text[8] = 0;
2217 dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2218 "with link type %s (portname: %s)\n",
2219 qeth_get_cardname(card),
2220 (card->info.mcl_level[0]) ? " (level: " : "",
2221 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2222 (card->info.mcl_level[0]) ? ")" : "",
2223 qeth_get_cardname_short(card),
2224 dbf_text);
2225
2226 }
2227
2228 static void qeth_print_status_no_portname(struct qeth_card *card)
2229 {
2230 if (card->info.portname[0])
2231 dev_info(&card->gdev->dev, "Device is a%s "
2232 "card%s%s%s\nwith link type %s "
2233 "(no portname needed by interface).\n",
2234 qeth_get_cardname(card),
2235 (card->info.mcl_level[0]) ? " (level: " : "",
2236 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2237 (card->info.mcl_level[0]) ? ")" : "",
2238 qeth_get_cardname_short(card));
2239 else
2240 dev_info(&card->gdev->dev, "Device is a%s "
2241 "card%s%s%s\nwith link type %s.\n",
2242 qeth_get_cardname(card),
2243 (card->info.mcl_level[0]) ? " (level: " : "",
2244 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2245 (card->info.mcl_level[0]) ? ")" : "",
2246 qeth_get_cardname_short(card));
2247 }
2248
2249 void qeth_print_status_message(struct qeth_card *card)
2250 {
2251 switch (card->info.type) {
2252 case QETH_CARD_TYPE_OSAE:
2253 /* VM will use a non-zero first character
2254 * to indicate a HiperSockets like reporting
2255 * of the level OSA sets the first character to zero
2256 * */
2257 if (!card->info.mcl_level[0]) {
2258 sprintf(card->info.mcl_level, "%02x%02x",
2259 card->info.mcl_level[2],
2260 card->info.mcl_level[3]);
2261
2262 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2263 break;
2264 }
2265 /* fallthrough */
2266 case QETH_CARD_TYPE_IQD:
2267 if ((card->info.guestlan) ||
2268 (card->info.mcl_level[0] & 0x80)) {
2269 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2270 card->info.mcl_level[0]];
2271 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2272 card->info.mcl_level[1]];
2273 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2274 card->info.mcl_level[2]];
2275 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2276 card->info.mcl_level[3]];
2277 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2278 }
2279 break;
2280 default:
2281 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2282 }
2283 if (card->info.portname_required)
2284 qeth_print_status_with_portname(card);
2285 else
2286 qeth_print_status_no_portname(card);
2287 }
2288 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2289
2290 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2291 {
2292 struct qeth_buffer_pool_entry *entry;
2293
2294 QETH_DBF_TEXT(TRACE, 5, "inwrklst");
2295
2296 list_for_each_entry(entry,
2297 &card->qdio.init_pool.entry_list, init_list) {
2298 qeth_put_buffer_pool_entry(card, entry);
2299 }
2300 }
2301
2302 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2303 struct qeth_card *card)
2304 {
2305 struct list_head *plh;
2306 struct qeth_buffer_pool_entry *entry;
2307 int i, free;
2308 struct page *page;
2309
2310 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2311 return NULL;
2312
2313 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2314 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2315 free = 1;
2316 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2317 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2318 free = 0;
2319 break;
2320 }
2321 }
2322 if (free) {
2323 list_del_init(&entry->list);
2324 return entry;
2325 }
2326 }
2327
2328 /* no free buffer in pool so take first one and swap pages */
2329 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2330 struct qeth_buffer_pool_entry, list);
2331 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2332 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2333 page = alloc_page(GFP_ATOMIC);
2334 if (!page) {
2335 return NULL;
2336 } else {
2337 free_page((unsigned long)entry->elements[i]);
2338 entry->elements[i] = page_address(page);
2339 if (card->options.performance_stats)
2340 card->perf_stats.sg_alloc_page_rx++;
2341 }
2342 }
2343 }
2344 list_del_init(&entry->list);
2345 return entry;
2346 }
2347
2348 static int qeth_init_input_buffer(struct qeth_card *card,
2349 struct qeth_qdio_buffer *buf)
2350 {
2351 struct qeth_buffer_pool_entry *pool_entry;
2352 int i;
2353
2354 pool_entry = qeth_find_free_buffer_pool_entry(card);
2355 if (!pool_entry)
2356 return 1;
2357
2358 /*
2359 * since the buffer is accessed only from the input_tasklet
2360 * there shouldn't be a need to synchronize; also, since we use
2361 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2362 * buffers
2363 */
2364
2365 buf->pool_entry = pool_entry;
2366 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2367 buf->buffer->element[i].length = PAGE_SIZE;
2368 buf->buffer->element[i].addr = pool_entry->elements[i];
2369 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2370 buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
2371 else
2372 buf->buffer->element[i].flags = 0;
2373 }
2374 return 0;
2375 }
2376
2377 int qeth_init_qdio_queues(struct qeth_card *card)
2378 {
2379 int i, j;
2380 int rc;
2381
2382 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2383
2384 /* inbound queue */
2385 memset(card->qdio.in_q->qdio_bufs, 0,
2386 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2387 qeth_initialize_working_pool_list(card);
2388 /*give only as many buffers to hardware as we have buffer pool entries*/
2389 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2390 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2391 card->qdio.in_q->next_buf_to_init =
2392 card->qdio.in_buf_pool.buf_count - 1;
2393 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2394 card->qdio.in_buf_pool.buf_count - 1);
2395 if (rc) {
2396 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2397 return rc;
2398 }
2399 /* outbound queue */
2400 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2401 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2402 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2403 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2404 qeth_clear_output_buffer(card->qdio.out_qs[i],
2405 &card->qdio.out_qs[i]->bufs[j]);
2406 }
2407 card->qdio.out_qs[i]->card = card;
2408 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2409 card->qdio.out_qs[i]->do_pack = 0;
2410 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2411 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2412 atomic_set(&card->qdio.out_qs[i]->state,
2413 QETH_OUT_Q_UNLOCKED);
2414 }
2415 return 0;
2416 }
2417 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2418
2419 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2420 {
2421 switch (link_type) {
2422 case QETH_LINK_TYPE_HSTR:
2423 return 2;
2424 default:
2425 return 1;
2426 }
2427 }
2428
2429 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2430 struct qeth_ipa_cmd *cmd, __u8 command,
2431 enum qeth_prot_versions prot)
2432 {
2433 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2434 cmd->hdr.command = command;
2435 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2436 cmd->hdr.seqno = card->seqno.ipa;
2437 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2438 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2439 if (card->options.layer2)
2440 cmd->hdr.prim_version_no = 2;
2441 else
2442 cmd->hdr.prim_version_no = 1;
2443 cmd->hdr.param_count = 1;
2444 cmd->hdr.prot_version = prot;
2445 cmd->hdr.ipa_supported = 0;
2446 cmd->hdr.ipa_enabled = 0;
2447 }
2448
2449 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2450 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2451 {
2452 struct qeth_cmd_buffer *iob;
2453 struct qeth_ipa_cmd *cmd;
2454
2455 iob = qeth_wait_for_buffer(&card->write);
2456 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2457 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2458
2459 return iob;
2460 }
2461 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2462
2463 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2464 char prot_type)
2465 {
2466 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2467 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2468 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2469 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2470 }
2471 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2472
2473 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2474 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2475 unsigned long),
2476 void *reply_param)
2477 {
2478 int rc;
2479 char prot_type;
2480
2481 QETH_DBF_TEXT(TRACE, 4, "sendipa");
2482
2483 if (card->options.layer2)
2484 if (card->info.type == QETH_CARD_TYPE_OSN)
2485 prot_type = QETH_PROT_OSN2;
2486 else
2487 prot_type = QETH_PROT_LAYER2;
2488 else
2489 prot_type = QETH_PROT_TCPIP;
2490 qeth_prepare_ipa_cmd(card, iob, prot_type);
2491 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2492 iob, reply_cb, reply_param);
2493 return rc;
2494 }
2495 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2496
2497 static int qeth_send_startstoplan(struct qeth_card *card,
2498 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2499 {
2500 int rc;
2501 struct qeth_cmd_buffer *iob;
2502
2503 iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
2504 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2505
2506 return rc;
2507 }
2508
2509 int qeth_send_startlan(struct qeth_card *card)
2510 {
2511 int rc;
2512
2513 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2514
2515 rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
2516 return rc;
2517 }
2518 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2519
2520 int qeth_send_stoplan(struct qeth_card *card)
2521 {
2522 int rc = 0;
2523
2524 /*
2525 * TODO: according to the IPA format document page 14,
2526 * TCP/IP (we!) never issue a STOPLAN
2527 * is this right ?!?
2528 */
2529 QETH_DBF_TEXT(SETUP, 2, "stoplan");
2530
2531 rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
2532 return rc;
2533 }
2534 EXPORT_SYMBOL_GPL(qeth_send_stoplan);
2535
2536 int qeth_default_setadapterparms_cb(struct qeth_card *card,
2537 struct qeth_reply *reply, unsigned long data)
2538 {
2539 struct qeth_ipa_cmd *cmd;
2540
2541 QETH_DBF_TEXT(TRACE, 4, "defadpcb");
2542
2543 cmd = (struct qeth_ipa_cmd *) data;
2544 if (cmd->hdr.return_code == 0)
2545 cmd->hdr.return_code =
2546 cmd->data.setadapterparms.hdr.return_code;
2547 return 0;
2548 }
2549 EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);
2550
2551 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2552 struct qeth_reply *reply, unsigned long data)
2553 {
2554 struct qeth_ipa_cmd *cmd;
2555
2556 QETH_DBF_TEXT(TRACE, 3, "quyadpcb");
2557
2558 cmd = (struct qeth_ipa_cmd *) data;
2559 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
2560 card->info.link_type =
2561 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2562 card->options.adp.supported_funcs =
2563 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2564 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2565 }
2566
2567 struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2568 __u32 command, __u32 cmdlen)
2569 {
2570 struct qeth_cmd_buffer *iob;
2571 struct qeth_ipa_cmd *cmd;
2572
2573 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2574 QETH_PROT_IPV4);
2575 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2576 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2577 cmd->data.setadapterparms.hdr.command_code = command;
2578 cmd->data.setadapterparms.hdr.used_total = 1;
2579 cmd->data.setadapterparms.hdr.seq_no = 1;
2580
2581 return iob;
2582 }
2583 EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);
2584
2585 int qeth_query_setadapterparms(struct qeth_card *card)
2586 {
2587 int rc;
2588 struct qeth_cmd_buffer *iob;
2589
2590 QETH_DBF_TEXT(TRACE, 3, "queryadp");
2591 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2592 sizeof(struct qeth_ipacmd_setadpparms));
2593 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2594 return rc;
2595 }
2596 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2597
2598 int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
2599 const char *dbftext)
2600 {
2601 if (qdio_error) {
2602 QETH_DBF_TEXT(TRACE, 2, dbftext);
2603 QETH_DBF_TEXT(QERR, 2, dbftext);
2604 QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
2605 buf->element[15].flags & 0xff);
2606 QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
2607 buf->element[14].flags & 0xff);
2608 QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
2609 return 1;
2610 }
2611 return 0;
2612 }
2613 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
2614
2615 void qeth_queue_input_buffer(struct qeth_card *card, int index)
2616 {
2617 struct qeth_qdio_q *queue = card->qdio.in_q;
2618 int count;
2619 int i;
2620 int rc;
2621 int newcount = 0;
2622
2623 count = (index < queue->next_buf_to_init)?
2624 card->qdio.in_buf_pool.buf_count -
2625 (queue->next_buf_to_init - index) :
2626 card->qdio.in_buf_pool.buf_count -
2627 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
2628 /* only requeue at a certain threshold to avoid SIGAs */
2629 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
2630 for (i = queue->next_buf_to_init;
2631 i < queue->next_buf_to_init + count; ++i) {
2632 if (qeth_init_input_buffer(card,
2633 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
2634 break;
2635 } else {
2636 newcount++;
2637 }
2638 }
2639
2640 if (newcount < count) {
2641 /* we are in memory shortage so we switch back to
2642 traditional skb allocation and drop packages */
2643 atomic_set(&card->force_alloc_skb, 3);
2644 count = newcount;
2645 } else {
2646 atomic_add_unless(&card->force_alloc_skb, -1, 0);
2647 }
2648
2649 /*
2650 * according to old code it should be avoided to requeue all
2651 * 128 buffers in order to benefit from PCI avoidance.
2652 * this function keeps at least one buffer (the buffer at
2653 * 'index') un-requeued -> this buffer is the first buffer that
2654 * will be requeued the next time
2655 */
2656 if (card->options.performance_stats) {
2657 card->perf_stats.inbound_do_qdio_cnt++;
2658 card->perf_stats.inbound_do_qdio_start_time =
2659 qeth_get_micros();
2660 }
2661 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
2662 queue->next_buf_to_init, count);
2663 if (card->options.performance_stats)
2664 card->perf_stats.inbound_do_qdio_time +=
2665 qeth_get_micros() -
2666 card->perf_stats.inbound_do_qdio_start_time;
2667 if (rc) {
2668 dev_warn(&card->gdev->dev,
2669 "QDIO reported an error, rc=%i\n", rc);
2670 QETH_DBF_TEXT(TRACE, 2, "qinberr");
2671 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2672 }
2673 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
2674 QDIO_MAX_BUFFERS_PER_Q;
2675 }
2676 }
2677 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
2678
2679 static int qeth_handle_send_error(struct qeth_card *card,
2680 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
2681 {
2682 int sbalf15 = buffer->buffer->element[15].flags & 0xff;
2683
2684 QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
2685 qeth_check_qdio_errors(buffer->buffer, qdio_err, "qouterr");
2686
2687 if (!qdio_err)
2688 return QETH_SEND_ERROR_NONE;
2689
2690 if ((sbalf15 >= 15) && (sbalf15 <= 31))
2691 return QETH_SEND_ERROR_RETRY;
2692
2693 QETH_DBF_TEXT(TRACE, 1, "lnkfail");
2694 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2695 QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
2696 (u16)qdio_err, (u8)sbalf15);
2697 return QETH_SEND_ERROR_LINK_FAILURE;
2698 }
2699
2700 /*
2701 * Switched to packing state if the number of used buffers on a queue
2702 * reaches a certain limit.
2703 */
2704 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
2705 {
2706 if (!queue->do_pack) {
2707 if (atomic_read(&queue->used_buffers)
2708 >= QETH_HIGH_WATERMARK_PACK){
2709 /* switch non-PACKING -> PACKING */
2710 QETH_DBF_TEXT(TRACE, 6, "np->pack");
2711 if (queue->card->options.performance_stats)
2712 queue->card->perf_stats.sc_dp_p++;
2713 queue->do_pack = 1;
2714 }
2715 }
2716 }
2717
2718 /*
2719 * Switches from packing to non-packing mode. If there is a packing
2720 * buffer on the queue this buffer will be prepared to be flushed.
2721 * In that case 1 is returned to inform the caller. If no buffer
2722 * has to be flushed, zero is returned.
2723 */
2724 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
2725 {
2726 struct qeth_qdio_out_buffer *buffer;
2727 int flush_count = 0;
2728
2729 if (queue->do_pack) {
2730 if (atomic_read(&queue->used_buffers)
2731 <= QETH_LOW_WATERMARK_PACK) {
2732 /* switch PACKING -> non-PACKING */
2733 QETH_DBF_TEXT(TRACE, 6, "pack->np");
2734 if (queue->card->options.performance_stats)
2735 queue->card->perf_stats.sc_p_dp++;
2736 queue->do_pack = 0;
2737 /* flush packing buffers */
2738 buffer = &queue->bufs[queue->next_buf_to_fill];
2739 if ((atomic_read(&buffer->state) ==
2740 QETH_QDIO_BUF_EMPTY) &&
2741 (buffer->next_element_to_fill > 0)) {
2742 atomic_set(&buffer->state,
2743 QETH_QDIO_BUF_PRIMED);
2744 flush_count++;
2745 queue->next_buf_to_fill =
2746 (queue->next_buf_to_fill + 1) %
2747 QDIO_MAX_BUFFERS_PER_Q;
2748 }
2749 }
2750 }
2751 return flush_count;
2752 }
2753
2754 /*
2755 * Called to flush a packing buffer if no more pci flags are on the queue.
2756 * Checks if there is a packing buffer and prepares it to be flushed.
2757 * In that case returns 1, otherwise zero.
2758 */
2759 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
2760 {
2761 struct qeth_qdio_out_buffer *buffer;
2762
2763 buffer = &queue->bufs[queue->next_buf_to_fill];
2764 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
2765 (buffer->next_element_to_fill > 0)) {
2766 /* it's a packing buffer */
2767 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
2768 queue->next_buf_to_fill =
2769 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
2770 return 1;
2771 }
2772 return 0;
2773 }
2774
2775 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
2776 int count)
2777 {
2778 struct qeth_qdio_out_buffer *buf;
2779 int rc;
2780 int i;
2781 unsigned int qdio_flags;
2782
2783 for (i = index; i < index + count; ++i) {
2784 buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2785 buf->buffer->element[buf->next_element_to_fill - 1].flags |=
2786 SBAL_FLAGS_LAST_ENTRY;
2787
2788 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
2789 continue;
2790
2791 if (!queue->do_pack) {
2792 if ((atomic_read(&queue->used_buffers) >=
2793 (QETH_HIGH_WATERMARK_PACK -
2794 QETH_WATERMARK_PACK_FUZZ)) &&
2795 !atomic_read(&queue->set_pci_flags_count)) {
2796 /* it's likely that we'll go to packing
2797 * mode soon */
2798 atomic_inc(&queue->set_pci_flags_count);
2799 buf->buffer->element[0].flags |= 0x40;
2800 }
2801 } else {
2802 if (!atomic_read(&queue->set_pci_flags_count)) {
2803 /*
2804 * there's no outstanding PCI any more, so we
2805 * have to request a PCI to be sure the the PCI
2806 * will wake at some time in the future then we
2807 * can flush packed buffers that might still be
2808 * hanging around, which can happen if no
2809 * further send was requested by the stack
2810 */
2811 atomic_inc(&queue->set_pci_flags_count);
2812 buf->buffer->element[0].flags |= 0x40;
2813 }
2814 }
2815 }
2816
2817 queue->card->dev->trans_start = jiffies;
2818 if (queue->card->options.performance_stats) {
2819 queue->card->perf_stats.outbound_do_qdio_cnt++;
2820 queue->card->perf_stats.outbound_do_qdio_start_time =
2821 qeth_get_micros();
2822 }
2823 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
2824 if (atomic_read(&queue->set_pci_flags_count))
2825 qdio_flags |= QDIO_FLAG_PCI_OUT;
2826 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
2827 queue->queue_no, index, count);
2828 if (queue->card->options.performance_stats)
2829 queue->card->perf_stats.outbound_do_qdio_time +=
2830 qeth_get_micros() -
2831 queue->card->perf_stats.outbound_do_qdio_start_time;
2832 if (rc) {
2833 queue->card->stats.tx_errors += count;
2834 /* ignore temporary SIGA errors without busy condition */
2835 if (rc == QDIO_ERROR_SIGA_TARGET)
2836 return;
2837 QETH_DBF_TEXT(TRACE, 2, "flushbuf");
2838 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
2839 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
2840
2841 /* this must not happen under normal circumstances. if it
2842 * happens something is really wrong -> recover */
2843 qeth_schedule_recovery(queue->card);
2844 return;
2845 }
2846 atomic_add(count, &queue->used_buffers);
2847 if (queue->card->options.performance_stats)
2848 queue->card->perf_stats.bufs_sent += count;
2849 }
2850
2851 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
2852 {
2853 int index;
2854 int flush_cnt = 0;
2855 int q_was_packing = 0;
2856
2857 /*
2858 * check if weed have to switch to non-packing mode or if
2859 * we have to get a pci flag out on the queue
2860 */
2861 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
2862 !atomic_read(&queue->set_pci_flags_count)) {
2863 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
2864 QETH_OUT_Q_UNLOCKED) {
2865 /*
2866 * If we get in here, there was no action in
2867 * do_send_packet. So, we check if there is a
2868 * packing buffer to be flushed here.
2869 */
2870 netif_stop_queue(queue->card->dev);
2871 index = queue->next_buf_to_fill;
2872 q_was_packing = queue->do_pack;
2873 /* queue->do_pack may change */
2874 barrier();
2875 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
2876 if (!flush_cnt &&
2877 !atomic_read(&queue->set_pci_flags_count))
2878 flush_cnt +=
2879 qeth_flush_buffers_on_no_pci(queue);
2880 if (queue->card->options.performance_stats &&
2881 q_was_packing)
2882 queue->card->perf_stats.bufs_sent_pack +=
2883 flush_cnt;
2884 if (flush_cnt)
2885 qeth_flush_buffers(queue, index, flush_cnt);
2886 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2887 }
2888 }
2889 }
2890
2891 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
2892 unsigned int qdio_error, int __queue, int first_element,
2893 int count, unsigned long card_ptr)
2894 {
2895 struct qeth_card *card = (struct qeth_card *) card_ptr;
2896 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
2897 struct qeth_qdio_out_buffer *buffer;
2898 int i;
2899
2900 QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
2901 if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2902 QETH_DBF_TEXT(TRACE, 2, "achkcond");
2903 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
2904 netif_stop_queue(card->dev);
2905 qeth_schedule_recovery(card);
2906 return;
2907 }
2908 if (card->options.performance_stats) {
2909 card->perf_stats.outbound_handler_cnt++;
2910 card->perf_stats.outbound_handler_start_time =
2911 qeth_get_micros();
2912 }
2913 for (i = first_element; i < (first_element + count); ++i) {
2914 buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2915 qeth_handle_send_error(card, buffer, qdio_error);
2916 qeth_clear_output_buffer(queue, buffer);
2917 }
2918 atomic_sub(count, &queue->used_buffers);
2919 /* check if we need to do something on this outbound queue */
2920 if (card->info.type != QETH_CARD_TYPE_IQD)
2921 qeth_check_outbound_queue(queue);
2922
2923 netif_wake_queue(queue->card->dev);
2924 if (card->options.performance_stats)
2925 card->perf_stats.outbound_handler_time += qeth_get_micros() -
2926 card->perf_stats.outbound_handler_start_time;
2927 }
2928 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
2929
2930 int qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2931 {
2932 int cast_type = RTN_UNSPEC;
2933
2934 if (card->info.type == QETH_CARD_TYPE_OSN)
2935 return cast_type;
2936
2937 if (skb->dst && skb->dst->neighbour) {
2938 cast_type = skb->dst->neighbour->type;
2939 if ((cast_type == RTN_BROADCAST) ||
2940 (cast_type == RTN_MULTICAST) ||
2941 (cast_type == RTN_ANYCAST))
2942 return cast_type;
2943 else
2944 return RTN_UNSPEC;
2945 }
2946 /* try something else */
2947 if (skb->protocol == ETH_P_IPV6)
2948 return (skb_network_header(skb)[24] == 0xff) ?
2949 RTN_MULTICAST : 0;
2950 else if (skb->protocol == ETH_P_IP)
2951 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2952 RTN_MULTICAST : 0;
2953 /* ... */
2954 if (!memcmp(skb->data, skb->dev->broadcast, 6))
2955 return RTN_BROADCAST;
2956 else {
2957 u16 hdr_mac;
2958
2959 hdr_mac = *((u16 *)skb->data);
2960 /* tr multicast? */
2961 switch (card->info.link_type) {
2962 case QETH_LINK_TYPE_HSTR:
2963 case QETH_LINK_TYPE_LANE_TR:
2964 if ((hdr_mac == QETH_TR_MAC_NC) ||
2965 (hdr_mac == QETH_TR_MAC_C))
2966 return RTN_MULTICAST;
2967 break;
2968 /* eth or so multicast? */
2969 default:
2970 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2971 (hdr_mac == QETH_ETH_MAC_V6))
2972 return RTN_MULTICAST;
2973 }
2974 }
2975 return cast_type;
2976 }
2977 EXPORT_SYMBOL_GPL(qeth_get_cast_type);
2978
2979 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
2980 int ipv, int cast_type)
2981 {
2982 if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
2983 return card->qdio.default_out_queue;
2984 switch (card->qdio.no_out_queues) {
2985 case 4:
2986 if (cast_type && card->info.is_multicast_different)
2987 return card->info.is_multicast_different &
2988 (card->qdio.no_out_queues - 1);
2989 if (card->qdio.do_prio_queueing && (ipv == 4)) {
2990 const u8 tos = ip_hdr(skb)->tos;
2991
2992 if (card->qdio.do_prio_queueing ==
2993 QETH_PRIO_Q_ING_TOS) {
2994 if (tos & IP_TOS_NOTIMPORTANT)
2995 return 3;
2996 if (tos & IP_TOS_HIGHRELIABILITY)
2997 return 2;
2998 if (tos & IP_TOS_HIGHTHROUGHPUT)
2999 return 1;
3000 if (tos & IP_TOS_LOWDELAY)
3001 return 0;
3002 }
3003 if (card->qdio.do_prio_queueing ==
3004 QETH_PRIO_Q_ING_PREC)
3005 return 3 - (tos >> 6);
3006 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3007 /* TODO: IPv6!!! */
3008 }
3009 return card->qdio.default_out_queue;
3010 case 1: /* fallthrough for single-out-queue 1920-device */
3011 default:
3012 return card->qdio.default_out_queue;
3013 }
3014 }
3015 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3016
3017 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
3018 struct sk_buff *skb, int elems)
3019 {
3020 int elements_needed = 0;
3021
3022 if (skb_shinfo(skb)->nr_frags > 0)
3023 elements_needed = (skb_shinfo(skb)->nr_frags + 1);
3024 if (elements_needed == 0)
3025 elements_needed = 1 + (((((unsigned long) skb->data) %
3026 PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
3027 if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3028 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3029 "(Number=%d / Length=%d). Discarded.\n",
3030 (elements_needed+elems), skb->len);
3031 return 0;
3032 }
3033 return elements_needed;
3034 }
3035 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3036
3037 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3038 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3039 int offset)
3040 {
3041 int length = skb->len;
3042 int length_here;
3043 int element;
3044 char *data;
3045 int first_lap ;
3046
3047 element = *next_element_to_fill;
3048 data = skb->data;
3049 first_lap = (is_tso == 0 ? 1 : 0);
3050
3051 if (offset >= 0) {
3052 data = skb->data + offset;
3053 length -= offset;
3054 first_lap = 0;
3055 }
3056
3057 while (length > 0) {
3058 /* length_here is the remaining amount of data in this page */
3059 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3060 if (length < length_here)
3061 length_here = length;
3062
3063 buffer->element[element].addr = data;
3064 buffer->element[element].length = length_here;
3065 length -= length_here;
3066 if (!length) {
3067 if (first_lap)
3068 buffer->element[element].flags = 0;
3069 else
3070 buffer->element[element].flags =
3071 SBAL_FLAGS_LAST_FRAG;
3072 } else {
3073 if (first_lap)
3074 buffer->element[element].flags =
3075 SBAL_FLAGS_FIRST_FRAG;
3076 else
3077 buffer->element[element].flags =
3078 SBAL_FLAGS_MIDDLE_FRAG;
3079 }
3080 data += length_here;
3081 element++;
3082 first_lap = 0;
3083 }
3084 *next_element_to_fill = element;
3085 }
3086
3087 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3088 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3089 struct qeth_hdr *hdr, int offset, int hd_len)
3090 {
3091 struct qdio_buffer *buffer;
3092 int flush_cnt = 0, hdr_len, large_send = 0;
3093
3094 buffer = buf->buffer;
3095 atomic_inc(&skb->users);
3096 skb_queue_tail(&buf->skb_list, skb);
3097
3098 /*check first on TSO ....*/
3099 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3100 int element = buf->next_element_to_fill;
3101
3102 hdr_len = sizeof(struct qeth_hdr_tso) +
3103 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3104 /*fill first buffer entry only with header information */
3105 buffer->element[element].addr = skb->data;
3106 buffer->element[element].length = hdr_len;
3107 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3108 buf->next_element_to_fill++;
3109 skb->data += hdr_len;
3110 skb->len -= hdr_len;
3111 large_send = 1;
3112 }
3113
3114 if (offset >= 0) {
3115 int element = buf->next_element_to_fill;
3116 buffer->element[element].addr = hdr;
3117 buffer->element[element].length = sizeof(struct qeth_hdr) +
3118 hd_len;
3119 buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
3120 buf->is_header[element] = 1;
3121 buf->next_element_to_fill++;
3122 }
3123
3124 if (skb_shinfo(skb)->nr_frags == 0)
3125 __qeth_fill_buffer(skb, buffer, large_send,
3126 (int *)&buf->next_element_to_fill, offset);
3127 else
3128 __qeth_fill_buffer_frag(skb, buffer, large_send,
3129 (int *)&buf->next_element_to_fill);
3130
3131 if (!queue->do_pack) {
3132 QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
3133 /* set state to PRIMED -> will be flushed */
3134 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3135 flush_cnt = 1;
3136 } else {
3137 QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
3138 if (queue->card->options.performance_stats)
3139 queue->card->perf_stats.skbs_sent_pack++;
3140 if (buf->next_element_to_fill >=
3141 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3142 /*
3143 * packed buffer if full -> set state PRIMED
3144 * -> will be flushed
3145 */
3146 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3147 flush_cnt = 1;
3148 }
3149 }
3150 return flush_cnt;
3151 }
3152
3153 int qeth_do_send_packet_fast(struct qeth_card *card,
3154 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3155 struct qeth_hdr *hdr, int elements_needed,
3156 int offset, int hd_len)
3157 {
3158 struct qeth_qdio_out_buffer *buffer;
3159 int index;
3160
3161 /* spin until we get the queue ... */
3162 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3163 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3164 /* ... now we've got the queue */
3165 index = queue->next_buf_to_fill;
3166 buffer = &queue->bufs[queue->next_buf_to_fill];
3167 /*
3168 * check if buffer is empty to make sure that we do not 'overtake'
3169 * ourselves and try to fill a buffer that is already primed
3170 */
3171 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3172 goto out;
3173 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3174 QDIO_MAX_BUFFERS_PER_Q;
3175 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3176 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3177 qeth_flush_buffers(queue, index, 1);
3178 return 0;
3179 out:
3180 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3181 return -EBUSY;
3182 }
3183 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3184
3185 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3186 struct sk_buff *skb, struct qeth_hdr *hdr,
3187 int elements_needed)
3188 {
3189 struct qeth_qdio_out_buffer *buffer;
3190 int start_index;
3191 int flush_count = 0;
3192 int do_pack = 0;
3193 int tmp;
3194 int rc = 0;
3195
3196 /* spin until we get the queue ... */
3197 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3198 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3199 start_index = queue->next_buf_to_fill;
3200 buffer = &queue->bufs[queue->next_buf_to_fill];
3201 /*
3202 * check if buffer is empty to make sure that we do not 'overtake'
3203 * ourselves and try to fill a buffer that is already primed
3204 */
3205 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3206 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3207 return -EBUSY;
3208 }
3209 /* check if we need to switch packing state of this queue */
3210 qeth_switch_to_packing_if_needed(queue);
3211 if (queue->do_pack) {
3212 do_pack = 1;
3213 /* does packet fit in current buffer? */
3214 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3215 buffer->next_element_to_fill) < elements_needed) {
3216 /* ... no -> set state PRIMED */
3217 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3218 flush_count++;
3219 queue->next_buf_to_fill =
3220 (queue->next_buf_to_fill + 1) %
3221 QDIO_MAX_BUFFERS_PER_Q;
3222 buffer = &queue->bufs[queue->next_buf_to_fill];
3223 /* we did a step forward, so check buffer state
3224 * again */
3225 if (atomic_read(&buffer->state) !=
3226 QETH_QDIO_BUF_EMPTY) {
3227 qeth_flush_buffers(queue, start_index,
3228 flush_count);
3229 atomic_set(&queue->state,
3230 QETH_OUT_Q_UNLOCKED);
3231 return -EBUSY;
3232 }
3233 }
3234 }
3235 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3236 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3237 QDIO_MAX_BUFFERS_PER_Q;
3238 flush_count += tmp;
3239 if (flush_count)
3240 qeth_flush_buffers(queue, start_index, flush_count);
3241 else if (!atomic_read(&queue->set_pci_flags_count))
3242 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3243 /*
3244 * queue->state will go from LOCKED -> UNLOCKED or from
3245 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3246 * (switch packing state or flush buffer to get another pci flag out).
3247 * In that case we will enter this loop
3248 */
3249 while (atomic_dec_return(&queue->state)) {
3250 flush_count = 0;
3251 start_index = queue->next_buf_to_fill;
3252 /* check if we can go back to non-packing state */
3253 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
3254 /*
3255 * check if we need to flush a packing buffer to get a pci
3256 * flag out on the queue
3257 */
3258 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
3259 flush_count += qeth_flush_buffers_on_no_pci(queue);
3260 if (flush_count)
3261 qeth_flush_buffers(queue, start_index, flush_count);
3262 }
3263 /* at this point the queue is UNLOCKED again */
3264 if (queue->card->options.performance_stats && do_pack)
3265 queue->card->perf_stats.bufs_sent_pack += flush_count;
3266
3267 return rc;
3268 }
3269 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3270
3271 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3272 struct qeth_reply *reply, unsigned long data)
3273 {
3274 struct qeth_ipa_cmd *cmd;
3275 struct qeth_ipacmd_setadpparms *setparms;
3276
3277 QETH_DBF_TEXT(TRACE, 4, "prmadpcb");
3278
3279 cmd = (struct qeth_ipa_cmd *) data;
3280 setparms = &(cmd->data.setadapterparms);
3281
3282 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3283 if (cmd->hdr.return_code) {
3284 QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
3285 setparms->data.mode = SET_PROMISC_MODE_OFF;
3286 }
3287 card->info.promisc_mode = setparms->data.mode;
3288 return 0;
3289 }
3290
3291 void qeth_setadp_promisc_mode(struct qeth_card *card)
3292 {
3293 enum qeth_ipa_promisc_modes mode;
3294 struct net_device *dev = card->dev;
3295 struct qeth_cmd_buffer *iob;
3296 struct qeth_ipa_cmd *cmd;
3297
3298 QETH_DBF_TEXT(TRACE, 4, "setprom");
3299
3300 if (((dev->flags & IFF_PROMISC) &&
3301 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
3302 (!(dev->flags & IFF_PROMISC) &&
3303 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
3304 return;
3305 mode = SET_PROMISC_MODE_OFF;
3306 if (dev->flags & IFF_PROMISC)
3307 mode = SET_PROMISC_MODE_ON;
3308 QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);
3309
3310 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
3311 sizeof(struct qeth_ipacmd_setadpparms));
3312 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
3313 cmd->data.setadapterparms.data.mode = mode;
3314 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
3315 }
3316 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
3317
3318 int qeth_change_mtu(struct net_device *dev, int new_mtu)
3319 {
3320 struct qeth_card *card;
3321 char dbf_text[15];
3322
3323 card = dev->ml_priv;
3324
3325 QETH_DBF_TEXT(TRACE, 4, "chgmtu");
3326 sprintf(dbf_text, "%8x", new_mtu);
3327 QETH_DBF_TEXT(TRACE, 4, dbf_text);
3328
3329 if (new_mtu < 64)
3330 return -EINVAL;
3331 if (new_mtu > 65535)
3332 return -EINVAL;
3333 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
3334 (!qeth_mtu_is_valid(card, new_mtu)))
3335 return -EINVAL;
3336 dev->mtu = new_mtu;
3337 return 0;
3338 }
3339 EXPORT_SYMBOL_GPL(qeth_change_mtu);
3340
3341 struct net_device_stats *qeth_get_stats(struct net_device *dev)
3342 {
3343 struct qeth_card *card;
3344
3345 card = dev->ml_priv;
3346
3347 QETH_DBF_TEXT(TRACE, 5, "getstat");
3348
3349 return &card->stats;
3350 }
3351 EXPORT_SYMBOL_GPL(qeth_get_stats);
3352
3353 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
3354 struct qeth_reply *reply, unsigned long data)
3355 {
3356 struct qeth_ipa_cmd *cmd;
3357
3358 QETH_DBF_TEXT(TRACE, 4, "chgmaccb");
3359
3360 cmd = (struct qeth_ipa_cmd *) data;
3361 if (!card->options.layer2 ||
3362 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
3363 memcpy(card->dev->dev_addr,
3364 &cmd->data.setadapterparms.data.change_addr.addr,
3365 OSA_ADDR_LEN);
3366 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
3367 }
3368 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3369 return 0;
3370 }
3371
3372 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
3373 {
3374 int rc;
3375 struct qeth_cmd_buffer *iob;
3376 struct qeth_ipa_cmd *cmd;
3377
3378 QETH_DBF_TEXT(TRACE, 4, "chgmac");
3379
3380 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
3381 sizeof(struct qeth_ipacmd_setadpparms));
3382 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3383 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
3384 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
3385 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
3386 card->dev->dev_addr, OSA_ADDR_LEN);
3387 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
3388 NULL);
3389 return rc;
3390 }
3391 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
3392
3393 void qeth_tx_timeout(struct net_device *dev)
3394 {
3395 struct qeth_card *card;
3396
3397 card = dev->ml_priv;
3398 card->stats.tx_errors++;
3399 qeth_schedule_recovery(card);
3400 }
3401 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
3402
3403 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
3404 {
3405 struct qeth_card *card = dev->ml_priv;
3406 int rc = 0;
3407
3408 switch (regnum) {
3409 case MII_BMCR: /* Basic mode control register */
3410 rc = BMCR_FULLDPLX;
3411 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
3412 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
3413 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
3414 rc |= BMCR_SPEED100;
3415 break;
3416 case MII_BMSR: /* Basic mode status register */
3417 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
3418 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
3419 BMSR_100BASE4;
3420 break;
3421 case MII_PHYSID1: /* PHYS ID 1 */
3422 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
3423 dev->dev_addr[2];
3424 rc = (rc >> 5) & 0xFFFF;
3425 break;
3426 case MII_PHYSID2: /* PHYS ID 2 */
3427 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
3428 break;
3429 case MII_ADVERTISE: /* Advertisement control reg */
3430 rc = ADVERTISE_ALL;
3431 break;
3432 case MII_LPA: /* Link partner ability reg */
3433 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
3434 LPA_100BASE4 | LPA_LPACK;
3435 break;
3436 case MII_EXPANSION: /* Expansion register */
3437 break;
3438 case MII_DCOUNTER: /* disconnect counter */
3439 break;
3440 case MII_FCSCOUNTER: /* false carrier counter */
3441 break;
3442 case MII_NWAYTEST: /* N-way auto-neg test register */
3443 break;
3444 case MII_RERRCOUNTER: /* rx error counter */
3445 rc = card->stats.rx_errors;
3446 break;
3447 case MII_SREVISION: /* silicon revision */
3448 break;
3449 case MII_RESV1: /* reserved 1 */
3450 break;
3451 case MII_LBRERROR: /* loopback, rx, bypass error */
3452 break;
3453 case MII_PHYADDR: /* physical address */
3454 break;
3455 case MII_RESV2: /* reserved 2 */
3456 break;
3457 case MII_TPISTATUS: /* TPI status for 10mbps */
3458 break;
3459 case MII_NCONFIG: /* network interface config */
3460 break;
3461 default:
3462 break;
3463 }
3464 return rc;
3465 }
3466 EXPORT_SYMBOL_GPL(qeth_mdio_read);
3467
3468 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
3469 struct qeth_cmd_buffer *iob, int len,
3470 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
3471 unsigned long),
3472 void *reply_param)
3473 {
3474 u16 s1, s2;
3475
3476 QETH_DBF_TEXT(TRACE, 4, "sendsnmp");
3477
3478 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3479 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3480 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3481 /* adjust PDU length fields in IPA_PDU_HEADER */
3482 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
3483 s2 = (u32) len;
3484 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
3485 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
3486 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
3487 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
3488 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
3489 reply_cb, reply_param);
3490 }
3491
3492 static int qeth_snmp_command_cb(struct qeth_card *card,
3493 struct qeth_reply *reply, unsigned long sdata)
3494 {
3495 struct qeth_ipa_cmd *cmd;
3496 struct qeth_arp_query_info *qinfo;
3497 struct qeth_snmp_cmd *snmp;
3498 unsigned char *data;
3499 __u16 data_len;
3500
3501 QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");
3502
3503 cmd = (struct qeth_ipa_cmd *) sdata;
3504 data = (unsigned char *)((char *)cmd - reply->offset);
3505 qinfo = (struct qeth_arp_query_info *) reply->param;
3506 snmp = &cmd->data.setadapterparms.data.snmp;
3507
3508 if (cmd->hdr.return_code) {
3509 QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
3510 return 0;
3511 }
3512 if (cmd->data.setadapterparms.hdr.return_code) {
3513 cmd->hdr.return_code =
3514 cmd->data.setadapterparms.hdr.return_code;
3515 QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
3516 return 0;
3517 }
3518 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
3519 if (cmd->data.setadapterparms.hdr.seq_no == 1)
3520 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
3521 else
3522 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
3523
3524 /* check if there is enough room in userspace */
3525 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
3526 QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
3527 cmd->hdr.return_code = -ENOMEM;
3528 return 0;
3529 }
3530 QETH_DBF_TEXT_(TRACE, 4, "snore%i",
3531 cmd->data.setadapterparms.hdr.used_total);
3532 QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
3533 cmd->data.setadapterparms.hdr.seq_no);
3534 /*copy entries to user buffer*/
3535 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
3536 memcpy(qinfo->udata + qinfo->udata_offset,
3537 (char *)snmp,
3538 data_len + offsetof(struct qeth_snmp_cmd, data));
3539 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
3540 } else {
3541 memcpy(qinfo->udata + qinfo->udata_offset,
3542 (char *)&snmp->request, data_len);
3543 }
3544 qinfo->udata_offset += data_len;
3545 /* check if all replies received ... */
3546 QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
3547 cmd->data.setadapterparms.hdr.used_total);
3548 QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
3549 cmd->data.setadapterparms.hdr.seq_no);
3550 if (cmd->data.setadapterparms.hdr.seq_no <
3551 cmd->data.setadapterparms.hdr.used_total)
3552 return 1;
3553 return 0;
3554 }
3555
3556 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
3557 {
3558 struct qeth_cmd_buffer *iob;
3559 struct qeth_ipa_cmd *cmd;
3560 struct qeth_snmp_ureq *ureq;
3561 int req_len;
3562 struct qeth_arp_query_info qinfo = {0, };
3563 int rc = 0;
3564
3565 QETH_DBF_TEXT(TRACE, 3, "snmpcmd");
3566
3567 if (card->info.guestlan)
3568 return -EOPNOTSUPP;
3569
3570 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
3571 (!card->options.layer2)) {
3572 return -EOPNOTSUPP;
3573 }
3574 /* skip 4 bytes (data_len struct member) to get req_len */
3575 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
3576 return -EFAULT;
3577 ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
3578 if (!ureq) {
3579 QETH_DBF_TEXT(TRACE, 2, "snmpnome");
3580 return -ENOMEM;
3581 }
3582 if (copy_from_user(ureq, udata,
3583 req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
3584 kfree(ureq);
3585 return -EFAULT;
3586 }
3587 qinfo.udata_len = ureq->hdr.data_len;
3588 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
3589 if (!qinfo.udata) {
3590 kfree(ureq);
3591 return -ENOMEM;
3592 }
3593 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
3594
3595 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
3596 QETH_SNMP_SETADP_CMDLENGTH + req_len);
3597 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3598 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
3599 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
3600 qeth_snmp_command_cb, (void *)&qinfo);
3601 if (rc)
3602 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
3603 QETH_CARD_IFNAME(card), rc);
3604 else {
3605 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
3606 rc = -EFAULT;
3607 }
3608
3609 kfree(ureq);
3610 kfree(qinfo.udata);
3611 return rc;
3612 }
3613 EXPORT_SYMBOL_GPL(qeth_snmp_command);
3614
3615 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
3616 {
3617 switch (card->info.type) {
3618 case QETH_CARD_TYPE_IQD:
3619 return 2;
3620 default:
3621 return 0;
3622 }
3623 }
3624
3625 static int qeth_qdio_establish(struct qeth_card *card)
3626 {
3627 struct qdio_initialize init_data;
3628 char *qib_param_field;
3629 struct qdio_buffer **in_sbal_ptrs;
3630 struct qdio_buffer **out_sbal_ptrs;
3631 int i, j, k;
3632 int rc = 0;
3633
3634 QETH_DBF_TEXT(SETUP, 2, "qdioest");
3635
3636 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
3637 GFP_KERNEL);
3638 if (!qib_param_field)
3639 return -ENOMEM;
3640
3641 qeth_create_qib_param_field(card, qib_param_field);
3642 qeth_create_qib_param_field_blkt(card, qib_param_field);
3643
3644 in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
3645 GFP_KERNEL);
3646 if (!in_sbal_ptrs) {
3647 kfree(qib_param_field);
3648 return -ENOMEM;
3649 }
3650 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
3651 in_sbal_ptrs[i] = (struct qdio_buffer *)
3652 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
3653
3654 out_sbal_ptrs =
3655 kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
3656 sizeof(void *), GFP_KERNEL);
3657 if (!out_sbal_ptrs) {
3658 kfree(in_sbal_ptrs);
3659 kfree(qib_param_field);
3660 return -ENOMEM;
3661 }
3662 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
3663 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
3664 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
3665 card->qdio.out_qs[i]->bufs[j].buffer);
3666 }
3667
3668 memset(&init_data, 0, sizeof(struct qdio_initialize));
3669 init_data.cdev = CARD_DDEV(card);
3670 init_data.q_format = qeth_get_qdio_q_format(card);
3671 init_data.qib_param_field_format = 0;
3672 init_data.qib_param_field = qib_param_field;
3673 init_data.no_input_qs = 1;
3674 init_data.no_output_qs = card->qdio.no_out_queues;
3675 init_data.input_handler = card->discipline.input_handler;
3676 init_data.output_handler = card->discipline.output_handler;
3677 init_data.int_parm = (unsigned long) card;
3678 init_data.flags = QDIO_INBOUND_0COPY_SBALS |
3679 QDIO_OUTBOUND_0COPY_SBALS |
3680 QDIO_USE_OUTBOUND_PCIS;
3681 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
3682 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
3683
3684 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
3685 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3686 rc = qdio_initialize(&init_data);
3687 if (rc)
3688 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
3689 }
3690 kfree(out_sbal_ptrs);
3691 kfree(in_sbal_ptrs);
3692 kfree(qib_param_field);
3693 return rc;
3694 }
3695
3696 static void qeth_core_free_card(struct qeth_card *card)
3697 {
3698
3699 QETH_DBF_TEXT(SETUP, 2, "freecrd");
3700 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3701 qeth_clean_channel(&card->read);
3702 qeth_clean_channel(&card->write);
3703 if (card->dev)
3704 free_netdev(card->dev);
3705 kfree(card->ip_tbd_list);
3706 qeth_free_qdio_buffers(card);
3707 unregister_service_level(&card->qeth_service_level);
3708 kfree(card);
3709 }
3710
3711 static struct ccw_device_id qeth_ids[] = {
3712 {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
3713 {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
3714 {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
3715 {},
3716 };
3717 MODULE_DEVICE_TABLE(ccw, qeth_ids);
3718
3719 static struct ccw_driver qeth_ccw_driver = {
3720 .name = "qeth",
3721 .ids = qeth_ids,
3722 .probe = ccwgroup_probe_ccwdev,
3723 .remove = ccwgroup_remove_ccwdev,
3724 };
3725
3726 static int qeth_core_driver_group(const char *buf, struct device *root_dev,
3727 unsigned long driver_id)
3728 {
3729 return ccwgroup_create_from_string(root_dev, driver_id,
3730 &qeth_ccw_driver, 3, buf);
3731 }
3732
3733 int qeth_core_hardsetup_card(struct qeth_card *card)
3734 {
3735 struct qdio_ssqd_desc *ssqd;
3736 int retries = 3;
3737 int mpno = 0;
3738 int rc;
3739
3740 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
3741 atomic_set(&card->force_alloc_skb, 0);
3742 retry:
3743 if (retries < 3) {
3744 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
3745 dev_name(&card->gdev->dev));
3746 ccw_device_set_offline(CARD_DDEV(card));
3747 ccw_device_set_offline(CARD_WDEV(card));
3748 ccw_device_set_offline(CARD_RDEV(card));
3749 ccw_device_set_online(CARD_RDEV(card));
3750 ccw_device_set_online(CARD_WDEV(card));
3751 ccw_device_set_online(CARD_DDEV(card));
3752 }
3753 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
3754 if (rc == -ERESTARTSYS) {
3755 QETH_DBF_TEXT(SETUP, 2, "break1");
3756 return rc;
3757 } else if (rc) {
3758 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3759 if (--retries < 0)
3760 goto out;
3761 else
3762 goto retry;
3763 }
3764
3765 rc = qeth_get_unitaddr(card);
3766 if (rc) {
3767 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3768 return rc;
3769 }
3770
3771 ssqd = kmalloc(sizeof(struct qdio_ssqd_desc), GFP_KERNEL);
3772 if (!ssqd) {
3773 rc = -ENOMEM;
3774 goto out;
3775 }
3776 rc = qdio_get_ssqd_desc(CARD_DDEV(card), ssqd);
3777 if (rc == 0)
3778 mpno = ssqd->pcnt;
3779 kfree(ssqd);
3780
3781 if (mpno)
3782 mpno = min(mpno - 1, QETH_MAX_PORTNO);
3783 if (card->info.portno > mpno) {
3784 QETH_DBF_MESSAGE(2, "Device %s does not offer port number %d"
3785 "\n.", CARD_BUS_ID(card), card->info.portno);
3786 rc = -ENODEV;
3787 goto out;
3788 }
3789 qeth_init_tokens(card);
3790 qeth_init_func_level(card);
3791 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
3792 if (rc == -ERESTARTSYS) {
3793 QETH_DBF_TEXT(SETUP, 2, "break2");
3794 return rc;
3795 } else if (rc) {
3796 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3797 if (--retries < 0)
3798 goto out;
3799 else
3800 goto retry;
3801 }
3802 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
3803 if (rc == -ERESTARTSYS) {
3804 QETH_DBF_TEXT(SETUP, 2, "break3");
3805 return rc;
3806 } else if (rc) {
3807 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3808 if (--retries < 0)
3809 goto out;
3810 else
3811 goto retry;
3812 }
3813 rc = qeth_mpc_initialize(card);
3814 if (rc) {
3815 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3816 goto out;
3817 }
3818 return 0;
3819 out:
3820 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
3821 "an error on the device\n");
3822 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
3823 dev_name(&card->gdev->dev), rc);
3824 return rc;
3825 }
3826 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
3827
3828 static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
3829 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
3830 {
3831 struct page *page = virt_to_page(element->addr);
3832 if (*pskb == NULL) {
3833 /* the upper protocol layers assume that there is data in the
3834 * skb itself. Copy a small amount (64 bytes) to make them
3835 * happy. */
3836 *pskb = dev_alloc_skb(64 + ETH_HLEN);
3837 if (!(*pskb))
3838 return -ENOMEM;
3839 skb_reserve(*pskb, ETH_HLEN);
3840 if (data_len <= 64) {
3841 memcpy(skb_put(*pskb, data_len), element->addr + offset,
3842 data_len);
3843 } else {
3844 get_page(page);
3845 memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
3846 skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
3847 data_len - 64);
3848 (*pskb)->data_len += data_len - 64;
3849 (*pskb)->len += data_len - 64;
3850 (*pskb)->truesize += data_len - 64;
3851 (*pfrag)++;
3852 }
3853 } else {
3854 get_page(page);
3855 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
3856 (*pskb)->data_len += data_len;
3857 (*pskb)->len += data_len;
3858 (*pskb)->truesize += data_len;
3859 (*pfrag)++;
3860 }
3861 return 0;
3862 }
3863
3864 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
3865 struct qdio_buffer *buffer,
3866 struct qdio_buffer_element **__element, int *__offset,
3867 struct qeth_hdr **hdr)
3868 {
3869 struct qdio_buffer_element *element = *__element;
3870 int offset = *__offset;
3871 struct sk_buff *skb = NULL;
3872 int skb_len;
3873 void *data_ptr;
3874 int data_len;
3875 int headroom = 0;
3876 int use_rx_sg = 0;
3877 int frag = 0;
3878
3879 /* qeth_hdr must not cross element boundaries */
3880 if (element->length < offset + sizeof(struct qeth_hdr)) {
3881 if (qeth_is_last_sbale(element))
3882 return NULL;
3883 element++;
3884 offset = 0;
3885 if (element->length < sizeof(struct qeth_hdr))
3886 return NULL;
3887 }
3888 *hdr = element->addr + offset;
3889
3890 offset += sizeof(struct qeth_hdr);
3891 if (card->options.layer2) {
3892 if (card->info.type == QETH_CARD_TYPE_OSN) {
3893 skb_len = (*hdr)->hdr.osn.pdu_length;
3894 headroom = sizeof(struct qeth_hdr);
3895 } else {
3896 skb_len = (*hdr)->hdr.l2.pkt_length;
3897 }
3898 } else {
3899 skb_len = (*hdr)->hdr.l3.length;
3900 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3901 (card->info.link_type == QETH_LINK_TYPE_HSTR))
3902 headroom = TR_HLEN;
3903 else
3904 headroom = ETH_HLEN;
3905 }
3906
3907 if (!skb_len)
3908 return NULL;
3909
3910 if ((skb_len >= card->options.rx_sg_cb) &&
3911 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
3912 (!atomic_read(&card->force_alloc_skb))) {
3913 use_rx_sg = 1;
3914 } else {
3915 skb = dev_alloc_skb(skb_len + headroom);
3916 if (!skb)
3917 goto no_mem;
3918 if (headroom)
3919 skb_reserve(skb, headroom);
3920 }
3921
3922 data_ptr = element->addr + offset;
3923 while (skb_len) {
3924 data_len = min(skb_len, (int)(element->length - offset));
3925 if (data_len) {
3926 if (use_rx_sg) {
3927 if (qeth_create_skb_frag(element, &skb, offset,
3928 &frag, data_len))
3929 goto no_mem;
3930 } else {
3931 memcpy(skb_put(skb, data_len), data_ptr,
3932 data_len);
3933 }
3934 }
3935 skb_len -= data_len;
3936 if (skb_len) {
3937 if (qeth_is_last_sbale(element)) {
3938 QETH_DBF_TEXT(TRACE, 4, "unexeob");
3939 QETH_DBF_TEXT_(TRACE, 4, "%s",
3940 CARD_BUS_ID(card));
3941 QETH_DBF_TEXT(QERR, 2, "unexeob");
3942 QETH_DBF_TEXT_(QERR, 2, "%s",
3943 CARD_BUS_ID(card));
3944 QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
3945 dev_kfree_skb_any(skb);
3946 card->stats.rx_errors++;
3947 return NULL;
3948 }
3949 element++;
3950 offset = 0;
3951 data_ptr = element->addr;
3952 } else {
3953 offset += data_len;
3954 }
3955 }
3956 *__element = element;
3957 *__offset = offset;
3958 if (use_rx_sg && card->options.performance_stats) {
3959 card->perf_stats.sg_skbs_rx++;
3960 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
3961 }
3962 return skb;
3963 no_mem:
3964 if (net_ratelimit()) {
3965 QETH_DBF_TEXT(TRACE, 2, "noskbmem");
3966 QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
3967 }
3968 card->stats.rx_dropped++;
3969 return NULL;
3970 }
3971 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
3972
3973 static void qeth_unregister_dbf_views(void)
3974 {
3975 int x;
3976 for (x = 0; x < QETH_DBF_INFOS; x++) {
3977 debug_unregister(qeth_dbf[x].id);
3978 qeth_dbf[x].id = NULL;
3979 }
3980 }
3981
3982 void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...)
3983 {
3984 char dbf_txt_buf[32];
3985 va_list args;
3986
3987 if (level > (qeth_dbf[dbf_nix].id)->level)
3988 return;
3989 va_start(args, fmt);
3990 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
3991 va_end(args);
3992 debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
3993 }
3994 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
3995
3996 static int qeth_register_dbf_views(void)
3997 {
3998 int ret;
3999 int x;
4000
4001 for (x = 0; x < QETH_DBF_INFOS; x++) {
4002 /* register the areas */
4003 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
4004 qeth_dbf[x].pages,
4005 qeth_dbf[x].areas,
4006 qeth_dbf[x].len);
4007 if (qeth_dbf[x].id == NULL) {
4008 qeth_unregister_dbf_views();
4009 return -ENOMEM;
4010 }
4011
4012 /* register a view */
4013 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
4014 if (ret) {
4015 qeth_unregister_dbf_views();
4016 return ret;
4017 }
4018
4019 /* set a passing level */
4020 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
4021 }
4022
4023 return 0;
4024 }
4025
4026 int qeth_core_load_discipline(struct qeth_card *card,
4027 enum qeth_discipline_id discipline)
4028 {
4029 int rc = 0;
4030 switch (discipline) {
4031 case QETH_DISCIPLINE_LAYER3:
4032 card->discipline.ccwgdriver = try_then_request_module(
4033 symbol_get(qeth_l3_ccwgroup_driver),
4034 "qeth_l3");
4035 break;
4036 case QETH_DISCIPLINE_LAYER2:
4037 card->discipline.ccwgdriver = try_then_request_module(
4038 symbol_get(qeth_l2_ccwgroup_driver),
4039 "qeth_l2");
4040 break;
4041 }
4042 if (!card->discipline.ccwgdriver) {
4043 dev_err(&card->gdev->dev, "There is no kernel module to "
4044 "support discipline %d\n", discipline);
4045 rc = -EINVAL;
4046 }
4047 return rc;
4048 }
4049
4050 void qeth_core_free_discipline(struct qeth_card *card)
4051 {
4052 if (card->options.layer2)
4053 symbol_put(qeth_l2_ccwgroup_driver);
4054 else
4055 symbol_put(qeth_l3_ccwgroup_driver);
4056 card->discipline.ccwgdriver = NULL;
4057 }
4058
4059 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
4060 {
4061 struct qeth_card *card;
4062 struct device *dev;
4063 int rc;
4064 unsigned long flags;
4065
4066 QETH_DBF_TEXT(SETUP, 2, "probedev");
4067
4068 dev = &gdev->dev;
4069 if (!get_device(dev))
4070 return -ENODEV;
4071
4072 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4073
4074 card = qeth_alloc_card();
4075 if (!card) {
4076 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4077 rc = -ENOMEM;
4078 goto err_dev;
4079 }
4080 card->read.ccwdev = gdev->cdev[0];
4081 card->write.ccwdev = gdev->cdev[1];
4082 card->data.ccwdev = gdev->cdev[2];
4083 dev_set_drvdata(&gdev->dev, card);
4084 card->gdev = gdev;
4085 gdev->cdev[0]->handler = qeth_irq;
4086 gdev->cdev[1]->handler = qeth_irq;
4087 gdev->cdev[2]->handler = qeth_irq;
4088
4089 rc = qeth_determine_card_type(card);
4090 if (rc) {
4091 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4092 goto err_card;
4093 }
4094 rc = qeth_setup_card(card);
4095 if (rc) {
4096 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
4097 goto err_card;
4098 }
4099
4100 if (card->info.type == QETH_CARD_TYPE_OSN) {
4101 rc = qeth_core_create_osn_attributes(dev);
4102 if (rc)
4103 goto err_card;
4104 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
4105 if (rc) {
4106 qeth_core_remove_osn_attributes(dev);
4107 goto err_card;
4108 }
4109 rc = card->discipline.ccwgdriver->probe(card->gdev);
4110 if (rc) {
4111 qeth_core_free_discipline(card);
4112 qeth_core_remove_osn_attributes(dev);
4113 goto err_card;
4114 }
4115 } else {
4116 rc = qeth_core_create_device_attributes(dev);
4117 if (rc)
4118 goto err_card;
4119 }
4120
4121 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4122 list_add_tail(&card->list, &qeth_core_card_list.list);
4123 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4124 return 0;
4125
4126 err_card:
4127 qeth_core_free_card(card);
4128 err_dev:
4129 put_device(dev);
4130 return rc;
4131 }
4132
4133 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
4134 {
4135 unsigned long flags;
4136 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4137
4138 QETH_DBF_TEXT(SETUP, 2, "removedv");
4139 if (card->discipline.ccwgdriver) {
4140 card->discipline.ccwgdriver->remove(gdev);
4141 qeth_core_free_discipline(card);
4142 }
4143
4144 if (card->info.type == QETH_CARD_TYPE_OSN) {
4145 qeth_core_remove_osn_attributes(&gdev->dev);
4146 } else {
4147 qeth_core_remove_device_attributes(&gdev->dev);
4148 }
4149 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
4150 list_del(&card->list);
4151 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
4152 qeth_core_free_card(card);
4153 dev_set_drvdata(&gdev->dev, NULL);
4154 put_device(&gdev->dev);
4155 return;
4156 }
4157
4158 static int qeth_core_set_online(struct ccwgroup_device *gdev)
4159 {
4160 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4161 int rc = 0;
4162 int def_discipline;
4163
4164 if (!card->discipline.ccwgdriver) {
4165 if (card->info.type == QETH_CARD_TYPE_IQD)
4166 def_discipline = QETH_DISCIPLINE_LAYER3;
4167 else
4168 def_discipline = QETH_DISCIPLINE_LAYER2;
4169 rc = qeth_core_load_discipline(card, def_discipline);
4170 if (rc)
4171 goto err;
4172 rc = card->discipline.ccwgdriver->probe(card->gdev);
4173 if (rc)
4174 goto err;
4175 }
4176 rc = card->discipline.ccwgdriver->set_online(gdev);
4177 err:
4178 return rc;
4179 }
4180
4181 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
4182 {
4183 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4184 return card->discipline.ccwgdriver->set_offline(gdev);
4185 }
4186
4187 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
4188 {
4189 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
4190 if (card->discipline.ccwgdriver &&
4191 card->discipline.ccwgdriver->shutdown)
4192 card->discipline.ccwgdriver->shutdown(gdev);
4193 }
4194
4195 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
4196 .owner = THIS_MODULE,
4197 .name = "qeth",
4198 .driver_id = 0xD8C5E3C8,
4199 .probe = qeth_core_probe_device,
4200 .remove = qeth_core_remove_device,
4201 .set_online = qeth_core_set_online,
4202 .set_offline = qeth_core_set_offline,
4203 .shutdown = qeth_core_shutdown,
4204 };
4205
4206 static ssize_t
4207 qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
4208 size_t count)
4209 {
4210 int err;
4211 err = qeth_core_driver_group(buf, qeth_core_root_dev,
4212 qeth_core_ccwgroup_driver.driver_id);
4213 if (err)
4214 return err;
4215 else
4216 return count;
4217 }
4218
4219 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
4220
4221 static struct {
4222 const char str[ETH_GSTRING_LEN];
4223 } qeth_ethtool_stats_keys[] = {
4224 /* 0 */{"rx skbs"},
4225 {"rx buffers"},
4226 {"tx skbs"},
4227 {"tx buffers"},
4228 {"tx skbs no packing"},
4229 {"tx buffers no packing"},
4230 {"tx skbs packing"},
4231 {"tx buffers packing"},
4232 {"tx sg skbs"},
4233 {"tx sg frags"},
4234 /* 10 */{"rx sg skbs"},
4235 {"rx sg frags"},
4236 {"rx sg page allocs"},
4237 {"tx large kbytes"},
4238 {"tx large count"},
4239 {"tx pk state ch n->p"},
4240 {"tx pk state ch p->n"},
4241 {"tx pk watermark low"},
4242 {"tx pk watermark high"},
4243 {"queue 0 buffer usage"},
4244 /* 20 */{"queue 1 buffer usage"},
4245 {"queue 2 buffer usage"},
4246 {"queue 3 buffer usage"},
4247 {"rx handler time"},
4248 {"rx handler count"},
4249 {"rx do_QDIO time"},
4250 {"rx do_QDIO count"},
4251 {"tx handler time"},
4252 {"tx handler count"},
4253 {"tx time"},
4254 /* 30 */{"tx count"},
4255 {"tx do_QDIO time"},
4256 {"tx do_QDIO count"},
4257 {"tx csum"},
4258 };
4259
4260 int qeth_core_get_stats_count(struct net_device *dev)
4261 {
4262 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
4263 }
4264 EXPORT_SYMBOL_GPL(qeth_core_get_stats_count);
4265
4266 void qeth_core_get_ethtool_stats(struct net_device *dev,
4267 struct ethtool_stats *stats, u64 *data)
4268 {
4269 struct qeth_card *card = dev->ml_priv;
4270 data[0] = card->stats.rx_packets -
4271 card->perf_stats.initial_rx_packets;
4272 data[1] = card->perf_stats.bufs_rec;
4273 data[2] = card->stats.tx_packets -
4274 card->perf_stats.initial_tx_packets;
4275 data[3] = card->perf_stats.bufs_sent;
4276 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
4277 - card->perf_stats.skbs_sent_pack;
4278 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
4279 data[6] = card->perf_stats.skbs_sent_pack;
4280 data[7] = card->perf_stats.bufs_sent_pack;
4281 data[8] = card->perf_stats.sg_skbs_sent;
4282 data[9] = card->perf_stats.sg_frags_sent;
4283 data[10] = card->perf_stats.sg_skbs_rx;
4284 data[11] = card->perf_stats.sg_frags_rx;
4285 data[12] = card->perf_stats.sg_alloc_page_rx;
4286 data[13] = (card->perf_stats.large_send_bytes >> 10);
4287 data[14] = card->perf_stats.large_send_cnt;
4288 data[15] = card->perf_stats.sc_dp_p;
4289 data[16] = card->perf_stats.sc_p_dp;
4290 data[17] = QETH_LOW_WATERMARK_PACK;
4291 data[18] = QETH_HIGH_WATERMARK_PACK;
4292 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
4293 data[20] = (card->qdio.no_out_queues > 1) ?
4294 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
4295 data[21] = (card->qdio.no_out_queues > 2) ?
4296 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
4297 data[22] = (card->qdio.no_out_queues > 3) ?
4298 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
4299 data[23] = card->perf_stats.inbound_time;
4300 data[24] = card->perf_stats.inbound_cnt;
4301 data[25] = card->perf_stats.inbound_do_qdio_time;
4302 data[26] = card->perf_stats.inbound_do_qdio_cnt;
4303 data[27] = card->perf_stats.outbound_handler_time;
4304 data[28] = card->perf_stats.outbound_handler_cnt;
4305 data[29] = card->perf_stats.outbound_time;
4306 data[30] = card->perf_stats.outbound_cnt;
4307 data[31] = card->perf_stats.outbound_do_qdio_time;
4308 data[32] = card->perf_stats.outbound_do_qdio_cnt;
4309 data[33] = card->perf_stats.tx_csum;
4310 }
4311 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
4312
4313 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
4314 {
4315 switch (stringset) {
4316 case ETH_SS_STATS:
4317 memcpy(data, &qeth_ethtool_stats_keys,
4318 sizeof(qeth_ethtool_stats_keys));
4319 break;
4320 default:
4321 WARN_ON(1);
4322 break;
4323 }
4324 }
4325 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
4326
4327 void qeth_core_get_drvinfo(struct net_device *dev,
4328 struct ethtool_drvinfo *info)
4329 {
4330 struct qeth_card *card = dev->ml_priv;
4331 if (card->options.layer2)
4332 strcpy(info->driver, "qeth_l2");
4333 else
4334 strcpy(info->driver, "qeth_l3");
4335
4336 strcpy(info->version, "1.0");
4337 strcpy(info->fw_version, card->info.mcl_level);
4338 sprintf(info->bus_info, "%s/%s/%s",
4339 CARD_RDEV_ID(card),
4340 CARD_WDEV_ID(card),
4341 CARD_DDEV_ID(card));
4342 }
4343 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
4344
4345 int qeth_core_ethtool_get_settings(struct net_device *netdev,
4346 struct ethtool_cmd *ecmd)
4347 {
4348 struct qeth_card *card = netdev->ml_priv;
4349 enum qeth_link_types link_type;
4350
4351 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
4352 link_type = QETH_LINK_TYPE_10GBIT_ETH;
4353 else
4354 link_type = card->info.link_type;
4355
4356 ecmd->transceiver = XCVR_INTERNAL;
4357 ecmd->supported = SUPPORTED_Autoneg;
4358 ecmd->advertising = ADVERTISED_Autoneg;
4359 ecmd->duplex = DUPLEX_FULL;
4360 ecmd->autoneg = AUTONEG_ENABLE;
4361
4362 switch (link_type) {
4363 case QETH_LINK_TYPE_FAST_ETH:
4364 case QETH_LINK_TYPE_LANE_ETH100:
4365 ecmd->supported |= SUPPORTED_10baseT_Half |
4366 SUPPORTED_10baseT_Full |
4367 SUPPORTED_100baseT_Half |
4368 SUPPORTED_100baseT_Full |
4369 SUPPORTED_TP;
4370 ecmd->advertising |= ADVERTISED_10baseT_Half |
4371 ADVERTISED_10baseT_Full |
4372 ADVERTISED_100baseT_Half |
4373 ADVERTISED_100baseT_Full |
4374 ADVERTISED_TP;
4375 ecmd->speed = SPEED_100;
4376 ecmd->port = PORT_TP;
4377 break;
4378
4379 case QETH_LINK_TYPE_GBIT_ETH:
4380 case QETH_LINK_TYPE_LANE_ETH1000:
4381 ecmd->supported |= SUPPORTED_10baseT_Half |
4382 SUPPORTED_10baseT_Full |
4383 SUPPORTED_100baseT_Half |
4384 SUPPORTED_100baseT_Full |
4385 SUPPORTED_1000baseT_Half |
4386 SUPPORTED_1000baseT_Full |
4387 SUPPORTED_FIBRE;
4388 ecmd->advertising |= ADVERTISED_10baseT_Half |
4389 ADVERTISED_10baseT_Full |
4390 ADVERTISED_100baseT_Half |
4391 ADVERTISED_100baseT_Full |
4392 ADVERTISED_1000baseT_Half |
4393 ADVERTISED_1000baseT_Full |
4394 ADVERTISED_FIBRE;
4395 ecmd->speed = SPEED_1000;
4396 ecmd->port = PORT_FIBRE;
4397 break;
4398
4399 case QETH_LINK_TYPE_10GBIT_ETH:
4400 ecmd->supported |= SUPPORTED_10baseT_Half |
4401 SUPPORTED_10baseT_Full |
4402 SUPPORTED_100baseT_Half |
4403 SUPPORTED_100baseT_Full |
4404 SUPPORTED_1000baseT_Half |
4405 SUPPORTED_1000baseT_Full |
4406 SUPPORTED_10000baseT_Full |
4407 SUPPORTED_FIBRE;
4408 ecmd->advertising |= ADVERTISED_10baseT_Half |
4409 ADVERTISED_10baseT_Full |
4410 ADVERTISED_100baseT_Half |
4411 ADVERTISED_100baseT_Full |
4412 ADVERTISED_1000baseT_Half |
4413 ADVERTISED_1000baseT_Full |
4414 ADVERTISED_10000baseT_Full |
4415 ADVERTISED_FIBRE;
4416 ecmd->speed = SPEED_10000;
4417 ecmd->port = PORT_FIBRE;
4418 break;
4419
4420 default:
4421 ecmd->supported |= SUPPORTED_10baseT_Half |
4422 SUPPORTED_10baseT_Full |
4423 SUPPORTED_TP;
4424 ecmd->advertising |= ADVERTISED_10baseT_Half |
4425 ADVERTISED_10baseT_Full |
4426 ADVERTISED_TP;
4427 ecmd->speed = SPEED_10;
4428 ecmd->port = PORT_TP;
4429 }
4430
4431 return 0;
4432 }
4433 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
4434
4435 static int __init qeth_core_init(void)
4436 {
4437 int rc;
4438
4439 pr_info("loading core functions\n");
4440 INIT_LIST_HEAD(&qeth_core_card_list.list);
4441 rwlock_init(&qeth_core_card_list.rwlock);
4442
4443 rc = qeth_register_dbf_views();
4444 if (rc)
4445 goto out_err;
4446 rc = ccw_driver_register(&qeth_ccw_driver);
4447 if (rc)
4448 goto ccw_err;
4449 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
4450 if (rc)
4451 goto ccwgroup_err;
4452 rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
4453 &driver_attr_group);
4454 if (rc)
4455 goto driver_err;
4456 qeth_core_root_dev = root_device_register("qeth");
4457 rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
4458 if (rc)
4459 goto register_err;
4460
4461 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
4462 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
4463 if (!qeth_core_header_cache) {
4464 rc = -ENOMEM;
4465 goto slab_err;
4466 }
4467
4468 return 0;
4469 slab_err:
4470 root_device_unregister(qeth_core_root_dev);
4471 register_err:
4472 driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4473 &driver_attr_group);
4474 driver_err:
4475 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4476 ccwgroup_err:
4477 ccw_driver_unregister(&qeth_ccw_driver);
4478 ccw_err:
4479 QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
4480 qeth_unregister_dbf_views();
4481 out_err:
4482 pr_err("Initializing the qeth device driver failed\n");
4483 return rc;
4484 }
4485
4486 static void __exit qeth_core_exit(void)
4487 {
4488 root_device_unregister(qeth_core_root_dev);
4489 driver_remove_file(&qeth_core_ccwgroup_driver.driver,
4490 &driver_attr_group);
4491 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
4492 ccw_driver_unregister(&qeth_ccw_driver);
4493 kmem_cache_destroy(qeth_core_header_cache);
4494 qeth_unregister_dbf_views();
4495 pr_info("core functions removed\n");
4496 }
4497
4498 module_init(qeth_core_init);
4499 module_exit(qeth_core_exit);
4500 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
4501 MODULE_DESCRIPTION("qeth core functions");
4502 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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