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