1 /*
2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
17 #include <linux/ip.h>
18 #include <linux/tcp.h>
19 #include <linux/mii.h>
20 #include <linux/kthread.h>
21 #include <linux/slab.h>
22 #include <net/iucv/af_iucv.h>
23
24 #include <asm/ebcdic.h>
25 #include <asm/io.h>
26 #include <asm/sysinfo.h>
27 #include <asm/compat.h>
28
29 #include "qeth_core.h"
30
31 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
32 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
33 /* N P A M L V H */
34 [QETH_DBF_SETUP] = {"qeth_setup",
35 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
36 [QETH_DBF_MSG] = {"qeth_msg",
37 8, 1, 128, 3, &debug_sprintf_view, NULL},
38 [QETH_DBF_CTRL] = {"qeth_control",
39 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
40 };
41 EXPORT_SYMBOL_GPL(qeth_dbf);
42
43 struct qeth_card_list_struct qeth_core_card_list;
44 EXPORT_SYMBOL_GPL(qeth_core_card_list);
45 struct kmem_cache *qeth_core_header_cache;
46 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
47 static struct kmem_cache *qeth_qdio_outbuf_cache;
48
49 static struct device *qeth_core_root_dev;
50 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
51 static struct lock_class_key qdio_out_skb_queue_key;
52 static struct mutex qeth_mod_mutex;
53
54 static void qeth_send_control_data_cb(struct qeth_channel *,
55 struct qeth_cmd_buffer *);
56 static int qeth_issue_next_read(struct qeth_card *);
57 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
58 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
59 static void qeth_free_buffer_pool(struct qeth_card *);
60 static int qeth_qdio_establish(struct qeth_card *);
61 static void qeth_free_qdio_buffers(struct qeth_card *);
62 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
63 struct qeth_qdio_out_buffer *buf,
64 enum iucv_tx_notify notification);
65 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
66 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
67 struct qeth_qdio_out_buffer *buf,
68 enum qeth_qdio_buffer_states newbufstate);
69 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
70
71 static struct workqueue_struct *qeth_wq;
72
qeth_close_dev_handler(struct work_struct * work)73 static void qeth_close_dev_handler(struct work_struct *work)
74 {
75 struct qeth_card *card;
76
77 card = container_of(work, struct qeth_card, close_dev_work);
78 QETH_CARD_TEXT(card, 2, "cldevhdl");
79 rtnl_lock();
80 dev_close(card->dev);
81 rtnl_unlock();
82 ccwgroup_set_offline(card->gdev);
83 }
84
qeth_close_dev(struct qeth_card * card)85 void qeth_close_dev(struct qeth_card *card)
86 {
87 QETH_CARD_TEXT(card, 2, "cldevsubm");
88 queue_work(qeth_wq, &card->close_dev_work);
89 }
90 EXPORT_SYMBOL_GPL(qeth_close_dev);
91
qeth_get_cardname(struct qeth_card * card)92 static inline const char *qeth_get_cardname(struct qeth_card *card)
93 {
94 if (card->info.guestlan) {
95 switch (card->info.type) {
96 case QETH_CARD_TYPE_OSD:
97 return " Virtual NIC QDIO";
98 case QETH_CARD_TYPE_IQD:
99 return " Virtual NIC Hiper";
100 case QETH_CARD_TYPE_OSM:
101 return " Virtual NIC QDIO - OSM";
102 case QETH_CARD_TYPE_OSX:
103 return " Virtual NIC QDIO - OSX";
104 default:
105 return " unknown";
106 }
107 } else {
108 switch (card->info.type) {
109 case QETH_CARD_TYPE_OSD:
110 return " OSD Express";
111 case QETH_CARD_TYPE_IQD:
112 return " HiperSockets";
113 case QETH_CARD_TYPE_OSN:
114 return " OSN QDIO";
115 case QETH_CARD_TYPE_OSM:
116 return " OSM QDIO";
117 case QETH_CARD_TYPE_OSX:
118 return " OSX QDIO";
119 default:
120 return " unknown";
121 }
122 }
123 return " n/a";
124 }
125
126 /* max length to be returned: 14 */
qeth_get_cardname_short(struct qeth_card * card)127 const char *qeth_get_cardname_short(struct qeth_card *card)
128 {
129 if (card->info.guestlan) {
130 switch (card->info.type) {
131 case QETH_CARD_TYPE_OSD:
132 return "Virt.NIC QDIO";
133 case QETH_CARD_TYPE_IQD:
134 return "Virt.NIC Hiper";
135 case QETH_CARD_TYPE_OSM:
136 return "Virt.NIC OSM";
137 case QETH_CARD_TYPE_OSX:
138 return "Virt.NIC OSX";
139 default:
140 return "unknown";
141 }
142 } else {
143 switch (card->info.type) {
144 case QETH_CARD_TYPE_OSD:
145 switch (card->info.link_type) {
146 case QETH_LINK_TYPE_FAST_ETH:
147 return "OSD_100";
148 case QETH_LINK_TYPE_HSTR:
149 return "HSTR";
150 case QETH_LINK_TYPE_GBIT_ETH:
151 return "OSD_1000";
152 case QETH_LINK_TYPE_10GBIT_ETH:
153 return "OSD_10GIG";
154 case QETH_LINK_TYPE_LANE_ETH100:
155 return "OSD_FE_LANE";
156 case QETH_LINK_TYPE_LANE_TR:
157 return "OSD_TR_LANE";
158 case QETH_LINK_TYPE_LANE_ETH1000:
159 return "OSD_GbE_LANE";
160 case QETH_LINK_TYPE_LANE:
161 return "OSD_ATM_LANE";
162 default:
163 return "OSD_Express";
164 }
165 case QETH_CARD_TYPE_IQD:
166 return "HiperSockets";
167 case QETH_CARD_TYPE_OSN:
168 return "OSN";
169 case QETH_CARD_TYPE_OSM:
170 return "OSM_1000";
171 case QETH_CARD_TYPE_OSX:
172 return "OSX_10GIG";
173 default:
174 return "unknown";
175 }
176 }
177 return "n/a";
178 }
179
qeth_set_recovery_task(struct qeth_card * card)180 void qeth_set_recovery_task(struct qeth_card *card)
181 {
182 card->recovery_task = current;
183 }
184 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
185
qeth_clear_recovery_task(struct qeth_card * card)186 void qeth_clear_recovery_task(struct qeth_card *card)
187 {
188 card->recovery_task = NULL;
189 }
190 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
191
qeth_is_recovery_task(const struct qeth_card * card)192 static bool qeth_is_recovery_task(const struct qeth_card *card)
193 {
194 return card->recovery_task == current;
195 }
196
qeth_set_allowed_threads(struct qeth_card * card,unsigned long threads,int clear_start_mask)197 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
198 int clear_start_mask)
199 {
200 unsigned long flags;
201
202 spin_lock_irqsave(&card->thread_mask_lock, flags);
203 card->thread_allowed_mask = threads;
204 if (clear_start_mask)
205 card->thread_start_mask &= threads;
206 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
207 wake_up(&card->wait_q);
208 }
209 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
210
qeth_threads_running(struct qeth_card * card,unsigned long threads)211 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
212 {
213 unsigned long flags;
214 int rc = 0;
215
216 spin_lock_irqsave(&card->thread_mask_lock, flags);
217 rc = (card->thread_running_mask & threads);
218 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
219 return rc;
220 }
221 EXPORT_SYMBOL_GPL(qeth_threads_running);
222
qeth_wait_for_threads(struct qeth_card * card,unsigned long threads)223 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
224 {
225 if (qeth_is_recovery_task(card))
226 return 0;
227 return wait_event_interruptible(card->wait_q,
228 qeth_threads_running(card, threads) == 0);
229 }
230 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
231
qeth_clear_working_pool_list(struct qeth_card * card)232 void qeth_clear_working_pool_list(struct qeth_card *card)
233 {
234 struct qeth_buffer_pool_entry *pool_entry, *tmp;
235
236 QETH_CARD_TEXT(card, 5, "clwrklst");
237 list_for_each_entry_safe(pool_entry, tmp,
238 &card->qdio.in_buf_pool.entry_list, list){
239 list_del(&pool_entry->list);
240 }
241 }
242 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
243
qeth_alloc_buffer_pool(struct qeth_card * card)244 static int qeth_alloc_buffer_pool(struct qeth_card *card)
245 {
246 struct qeth_buffer_pool_entry *pool_entry;
247 void *ptr;
248 int i, j;
249
250 QETH_CARD_TEXT(card, 5, "alocpool");
251 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
252 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
253 if (!pool_entry) {
254 qeth_free_buffer_pool(card);
255 return -ENOMEM;
256 }
257 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
258 ptr = (void *) __get_free_page(GFP_KERNEL);
259 if (!ptr) {
260 while (j > 0)
261 free_page((unsigned long)
262 pool_entry->elements[--j]);
263 kfree(pool_entry);
264 qeth_free_buffer_pool(card);
265 return -ENOMEM;
266 }
267 pool_entry->elements[j] = ptr;
268 }
269 list_add(&pool_entry->init_list,
270 &card->qdio.init_pool.entry_list);
271 }
272 return 0;
273 }
274
qeth_realloc_buffer_pool(struct qeth_card * card,int bufcnt)275 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
276 {
277 QETH_CARD_TEXT(card, 2, "realcbp");
278
279 if ((card->state != CARD_STATE_DOWN) &&
280 (card->state != CARD_STATE_RECOVER))
281 return -EPERM;
282
283 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
284 qeth_clear_working_pool_list(card);
285 qeth_free_buffer_pool(card);
286 card->qdio.in_buf_pool.buf_count = bufcnt;
287 card->qdio.init_pool.buf_count = bufcnt;
288 return qeth_alloc_buffer_pool(card);
289 }
290 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
291
qeth_cq_init(struct qeth_card * card)292 static inline int qeth_cq_init(struct qeth_card *card)
293 {
294 int rc;
295
296 if (card->options.cq == QETH_CQ_ENABLED) {
297 QETH_DBF_TEXT(SETUP, 2, "cqinit");
298 memset(card->qdio.c_q->qdio_bufs, 0,
299 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
300 card->qdio.c_q->next_buf_to_init = 127;
301 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
302 card->qdio.no_in_queues - 1, 0,
303 127);
304 if (rc) {
305 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
306 goto out;
307 }
308 }
309 rc = 0;
310 out:
311 return rc;
312 }
313
qeth_alloc_cq(struct qeth_card * card)314 static inline int qeth_alloc_cq(struct qeth_card *card)
315 {
316 int rc;
317
318 if (card->options.cq == QETH_CQ_ENABLED) {
319 int i;
320 struct qdio_outbuf_state *outbuf_states;
321
322 QETH_DBF_TEXT(SETUP, 2, "cqon");
323 card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
324 GFP_KERNEL);
325 if (!card->qdio.c_q) {
326 rc = -1;
327 goto kmsg_out;
328 }
329 QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
330
331 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
332 card->qdio.c_q->bufs[i].buffer =
333 &card->qdio.c_q->qdio_bufs[i];
334 }
335
336 card->qdio.no_in_queues = 2;
337
338 card->qdio.out_bufstates =
339 kzalloc(card->qdio.no_out_queues *
340 QDIO_MAX_BUFFERS_PER_Q *
341 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
342 outbuf_states = card->qdio.out_bufstates;
343 if (outbuf_states == NULL) {
344 rc = -1;
345 goto free_cq_out;
346 }
347 for (i = 0; i < card->qdio.no_out_queues; ++i) {
348 card->qdio.out_qs[i]->bufstates = outbuf_states;
349 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
350 }
351 } else {
352 QETH_DBF_TEXT(SETUP, 2, "nocq");
353 card->qdio.c_q = NULL;
354 card->qdio.no_in_queues = 1;
355 }
356 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
357 rc = 0;
358 out:
359 return rc;
360 free_cq_out:
361 kfree(card->qdio.c_q);
362 card->qdio.c_q = NULL;
363 kmsg_out:
364 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
365 goto out;
366 }
367
qeth_free_cq(struct qeth_card * card)368 static inline void qeth_free_cq(struct qeth_card *card)
369 {
370 if (card->qdio.c_q) {
371 --card->qdio.no_in_queues;
372 kfree(card->qdio.c_q);
373 card->qdio.c_q = NULL;
374 }
375 kfree(card->qdio.out_bufstates);
376 card->qdio.out_bufstates = NULL;
377 }
378
qeth_compute_cq_notification(int sbalf15,int delayed)379 static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
380 int delayed) {
381 enum iucv_tx_notify n;
382
383 switch (sbalf15) {
384 case 0:
385 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
386 break;
387 case 4:
388 case 16:
389 case 17:
390 case 18:
391 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
392 TX_NOTIFY_UNREACHABLE;
393 break;
394 default:
395 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
396 TX_NOTIFY_GENERALERROR;
397 break;
398 }
399
400 return n;
401 }
402
qeth_cleanup_handled_pending(struct qeth_qdio_out_q * q,int bidx,int forced_cleanup)403 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
404 int bidx, int forced_cleanup)
405 {
406 if (q->card->options.cq != QETH_CQ_ENABLED)
407 return;
408
409 if (q->bufs[bidx]->next_pending != NULL) {
410 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
411 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
412
413 while (c) {
414 if (forced_cleanup ||
415 atomic_read(&c->state) ==
416 QETH_QDIO_BUF_HANDLED_DELAYED) {
417 struct qeth_qdio_out_buffer *f = c;
418 QETH_CARD_TEXT(f->q->card, 5, "fp");
419 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
420 /* release here to avoid interleaving between
421 outbound tasklet and inbound tasklet
422 regarding notifications and lifecycle */
423 qeth_release_skbs(c);
424
425 c = f->next_pending;
426 WARN_ON_ONCE(head->next_pending != f);
427 head->next_pending = c;
428 kmem_cache_free(qeth_qdio_outbuf_cache, f);
429 } else {
430 head = c;
431 c = c->next_pending;
432 }
433
434 }
435 }
436 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
437 QETH_QDIO_BUF_HANDLED_DELAYED)) {
438 /* for recovery situations */
439 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
440 qeth_init_qdio_out_buf(q, bidx);
441 QETH_CARD_TEXT(q->card, 2, "clprecov");
442 }
443 }
444
445
qeth_qdio_handle_aob(struct qeth_card * card,unsigned long phys_aob_addr)446 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
447 unsigned long phys_aob_addr) {
448 struct qaob *aob;
449 struct qeth_qdio_out_buffer *buffer;
450 enum iucv_tx_notify notification;
451
452 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
453 QETH_CARD_TEXT(card, 5, "haob");
454 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
455 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
456 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
457
458 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
459 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
460 notification = TX_NOTIFY_OK;
461 } else {
462 WARN_ON_ONCE(atomic_read(&buffer->state) !=
463 QETH_QDIO_BUF_PENDING);
464 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
465 notification = TX_NOTIFY_DELAYED_OK;
466 }
467
468 if (aob->aorc != 0) {
469 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
470 notification = qeth_compute_cq_notification(aob->aorc, 1);
471 }
472 qeth_notify_skbs(buffer->q, buffer, notification);
473
474 buffer->aob = NULL;
475 qeth_clear_output_buffer(buffer->q, buffer,
476 QETH_QDIO_BUF_HANDLED_DELAYED);
477
478 /* from here on: do not touch buffer anymore */
479 qdio_release_aob(aob);
480 }
481
qeth_is_cq(struct qeth_card * card,unsigned int queue)482 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
483 {
484 return card->options.cq == QETH_CQ_ENABLED &&
485 card->qdio.c_q != NULL &&
486 queue != 0 &&
487 queue == card->qdio.no_in_queues - 1;
488 }
489
490
qeth_issue_next_read(struct qeth_card * card)491 static int qeth_issue_next_read(struct qeth_card *card)
492 {
493 int rc;
494 struct qeth_cmd_buffer *iob;
495
496 QETH_CARD_TEXT(card, 5, "issnxrd");
497 if (card->read.state != CH_STATE_UP)
498 return -EIO;
499 iob = qeth_get_buffer(&card->read);
500 if (!iob) {
501 dev_warn(&card->gdev->dev, "The qeth device driver "
502 "failed to recover an error on the device\n");
503 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
504 "available\n", dev_name(&card->gdev->dev));
505 return -ENOMEM;
506 }
507 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
508 QETH_CARD_TEXT(card, 6, "noirqpnd");
509 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
510 (addr_t) iob, 0, 0);
511 if (rc) {
512 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
513 "rc=%i\n", dev_name(&card->gdev->dev), rc);
514 atomic_set(&card->read.irq_pending, 0);
515 card->read_or_write_problem = 1;
516 qeth_schedule_recovery(card);
517 wake_up(&card->wait_q);
518 }
519 return rc;
520 }
521
qeth_alloc_reply(struct qeth_card * card)522 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
523 {
524 struct qeth_reply *reply;
525
526 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
527 if (reply) {
528 atomic_set(&reply->refcnt, 1);
529 atomic_set(&reply->received, 0);
530 reply->card = card;
531 }
532 return reply;
533 }
534
qeth_get_reply(struct qeth_reply * reply)535 static void qeth_get_reply(struct qeth_reply *reply)
536 {
537 WARN_ON(atomic_read(&reply->refcnt) <= 0);
538 atomic_inc(&reply->refcnt);
539 }
540
qeth_put_reply(struct qeth_reply * reply)541 static void qeth_put_reply(struct qeth_reply *reply)
542 {
543 WARN_ON(atomic_read(&reply->refcnt) <= 0);
544 if (atomic_dec_and_test(&reply->refcnt))
545 kfree(reply);
546 }
547
qeth_issue_ipa_msg(struct qeth_ipa_cmd * cmd,int rc,struct qeth_card * card)548 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
549 struct qeth_card *card)
550 {
551 char *ipa_name;
552 int com = cmd->hdr.command;
553 ipa_name = qeth_get_ipa_cmd_name(com);
554 if (rc)
555 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
556 "x%X \"%s\"\n",
557 ipa_name, com, dev_name(&card->gdev->dev),
558 QETH_CARD_IFNAME(card), rc,
559 qeth_get_ipa_msg(rc));
560 else
561 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
562 ipa_name, com, dev_name(&card->gdev->dev),
563 QETH_CARD_IFNAME(card));
564 }
565
qeth_check_ipa_data(struct qeth_card * card,struct qeth_cmd_buffer * iob)566 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
567 struct qeth_cmd_buffer *iob)
568 {
569 struct qeth_ipa_cmd *cmd = NULL;
570
571 QETH_CARD_TEXT(card, 5, "chkipad");
572 if (IS_IPA(iob->data)) {
573 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
574 if (IS_IPA_REPLY(cmd)) {
575 if (cmd->hdr.command != IPA_CMD_SETCCID &&
576 cmd->hdr.command != IPA_CMD_DELCCID &&
577 cmd->hdr.command != IPA_CMD_MODCCID &&
578 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
579 qeth_issue_ipa_msg(cmd,
580 cmd->hdr.return_code, card);
581 return cmd;
582 } else {
583 switch (cmd->hdr.command) {
584 case IPA_CMD_STOPLAN:
585 if (cmd->hdr.return_code ==
586 IPA_RC_VEPA_TO_VEB_TRANSITION) {
587 dev_err(&card->gdev->dev,
588 "Interface %s is down because the "
589 "adjacent port is no longer in "
590 "reflective relay mode\n",
591 QETH_CARD_IFNAME(card));
592 qeth_close_dev(card);
593 } else {
594 dev_warn(&card->gdev->dev,
595 "The link for interface %s on CHPID"
596 " 0x%X failed\n",
597 QETH_CARD_IFNAME(card),
598 card->info.chpid);
599 qeth_issue_ipa_msg(cmd,
600 cmd->hdr.return_code, card);
601 }
602 card->lan_online = 0;
603 if (card->dev && netif_carrier_ok(card->dev))
604 netif_carrier_off(card->dev);
605 return NULL;
606 case IPA_CMD_STARTLAN:
607 dev_info(&card->gdev->dev,
608 "The link for %s on CHPID 0x%X has"
609 " been restored\n",
610 QETH_CARD_IFNAME(card),
611 card->info.chpid);
612 netif_carrier_on(card->dev);
613 card->lan_online = 1;
614 if (card->info.hwtrap)
615 card->info.hwtrap = 2;
616 qeth_schedule_recovery(card);
617 return NULL;
618 case IPA_CMD_MODCCID:
619 return cmd;
620 case IPA_CMD_REGISTER_LOCAL_ADDR:
621 QETH_CARD_TEXT(card, 3, "irla");
622 break;
623 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
624 QETH_CARD_TEXT(card, 3, "urla");
625 break;
626 default:
627 QETH_DBF_MESSAGE(2, "Received data is IPA "
628 "but not a reply!\n");
629 break;
630 }
631 }
632 }
633 return cmd;
634 }
635
qeth_clear_ipacmd_list(struct qeth_card * card)636 void qeth_clear_ipacmd_list(struct qeth_card *card)
637 {
638 struct qeth_reply *reply, *r;
639 unsigned long flags;
640
641 QETH_CARD_TEXT(card, 4, "clipalst");
642
643 spin_lock_irqsave(&card->lock, flags);
644 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
645 qeth_get_reply(reply);
646 reply->rc = -EIO;
647 atomic_inc(&reply->received);
648 list_del_init(&reply->list);
649 wake_up(&reply->wait_q);
650 qeth_put_reply(reply);
651 }
652 spin_unlock_irqrestore(&card->lock, flags);
653 atomic_set(&card->write.irq_pending, 0);
654 }
655 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
656
qeth_check_idx_response(struct qeth_card * card,unsigned char * buffer)657 static int qeth_check_idx_response(struct qeth_card *card,
658 unsigned char *buffer)
659 {
660 if (!buffer)
661 return 0;
662
663 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
664 if ((buffer[2] & 0xc0) == 0xc0) {
665 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
666 "with cause code 0x%02x%s\n",
667 buffer[4],
668 ((buffer[4] == 0x22) ?
669 " -- try another portname" : ""));
670 QETH_CARD_TEXT(card, 2, "ckidxres");
671 QETH_CARD_TEXT(card, 2, " idxterm");
672 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
673 if (buffer[4] == 0xf6) {
674 dev_err(&card->gdev->dev,
675 "The qeth device is not configured "
676 "for the OSI layer required by z/VM\n");
677 return -EPERM;
678 }
679 return -EIO;
680 }
681 return 0;
682 }
683
qeth_setup_ccw(struct qeth_channel * channel,unsigned char * iob,__u32 len)684 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
685 __u32 len)
686 {
687 struct qeth_card *card;
688
689 card = CARD_FROM_CDEV(channel->ccwdev);
690 QETH_CARD_TEXT(card, 4, "setupccw");
691 if (channel == &card->read)
692 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
693 else
694 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
695 channel->ccw.count = len;
696 channel->ccw.cda = (__u32) __pa(iob);
697 }
698
__qeth_get_buffer(struct qeth_channel * channel)699 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
700 {
701 __u8 index;
702
703 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
704 index = channel->io_buf_no;
705 do {
706 if (channel->iob[index].state == BUF_STATE_FREE) {
707 channel->iob[index].state = BUF_STATE_LOCKED;
708 channel->io_buf_no = (channel->io_buf_no + 1) %
709 QETH_CMD_BUFFER_NO;
710 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
711 return channel->iob + index;
712 }
713 index = (index + 1) % QETH_CMD_BUFFER_NO;
714 } while (index != channel->io_buf_no);
715
716 return NULL;
717 }
718
qeth_release_buffer(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)719 void qeth_release_buffer(struct qeth_channel *channel,
720 struct qeth_cmd_buffer *iob)
721 {
722 unsigned long flags;
723
724 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
725 spin_lock_irqsave(&channel->iob_lock, flags);
726 memset(iob->data, 0, QETH_BUFSIZE);
727 iob->state = BUF_STATE_FREE;
728 iob->callback = qeth_send_control_data_cb;
729 iob->rc = 0;
730 spin_unlock_irqrestore(&channel->iob_lock, flags);
731 wake_up(&channel->wait_q);
732 }
733 EXPORT_SYMBOL_GPL(qeth_release_buffer);
734
qeth_get_buffer(struct qeth_channel * channel)735 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
736 {
737 struct qeth_cmd_buffer *buffer = NULL;
738 unsigned long flags;
739
740 spin_lock_irqsave(&channel->iob_lock, flags);
741 buffer = __qeth_get_buffer(channel);
742 spin_unlock_irqrestore(&channel->iob_lock, flags);
743 return buffer;
744 }
745
qeth_wait_for_buffer(struct qeth_channel * channel)746 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
747 {
748 struct qeth_cmd_buffer *buffer;
749 wait_event(channel->wait_q,
750 ((buffer = qeth_get_buffer(channel)) != NULL));
751 return buffer;
752 }
753 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
754
qeth_clear_cmd_buffers(struct qeth_channel * channel)755 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
756 {
757 int cnt;
758
759 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
760 qeth_release_buffer(channel, &channel->iob[cnt]);
761 channel->buf_no = 0;
762 channel->io_buf_no = 0;
763 }
764 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
765
qeth_send_control_data_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)766 static void qeth_send_control_data_cb(struct qeth_channel *channel,
767 struct qeth_cmd_buffer *iob)
768 {
769 struct qeth_card *card;
770 struct qeth_reply *reply, *r;
771 struct qeth_ipa_cmd *cmd;
772 unsigned long flags;
773 int keep_reply;
774 int rc = 0;
775
776 card = CARD_FROM_CDEV(channel->ccwdev);
777 QETH_CARD_TEXT(card, 4, "sndctlcb");
778 rc = qeth_check_idx_response(card, iob->data);
779 switch (rc) {
780 case 0:
781 break;
782 case -EIO:
783 qeth_clear_ipacmd_list(card);
784 qeth_schedule_recovery(card);
785 /* fall through */
786 default:
787 goto out;
788 }
789
790 cmd = qeth_check_ipa_data(card, iob);
791 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
792 goto out;
793 /*in case of OSN : check if cmd is set */
794 if (card->info.type == QETH_CARD_TYPE_OSN &&
795 cmd &&
796 cmd->hdr.command != IPA_CMD_STARTLAN &&
797 card->osn_info.assist_cb != NULL) {
798 card->osn_info.assist_cb(card->dev, cmd);
799 goto out;
800 }
801
802 spin_lock_irqsave(&card->lock, flags);
803 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
804 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
805 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
806 qeth_get_reply(reply);
807 list_del_init(&reply->list);
808 spin_unlock_irqrestore(&card->lock, flags);
809 keep_reply = 0;
810 if (reply->callback != NULL) {
811 if (cmd) {
812 reply->offset = (__u16)((char *)cmd -
813 (char *)iob->data);
814 keep_reply = reply->callback(card,
815 reply,
816 (unsigned long)cmd);
817 } else
818 keep_reply = reply->callback(card,
819 reply,
820 (unsigned long)iob);
821 }
822 if (cmd)
823 reply->rc = (u16) cmd->hdr.return_code;
824 else if (iob->rc)
825 reply->rc = iob->rc;
826 if (keep_reply) {
827 spin_lock_irqsave(&card->lock, flags);
828 list_add_tail(&reply->list,
829 &card->cmd_waiter_list);
830 spin_unlock_irqrestore(&card->lock, flags);
831 } else {
832 atomic_inc(&reply->received);
833 wake_up(&reply->wait_q);
834 }
835 qeth_put_reply(reply);
836 goto out;
837 }
838 }
839 spin_unlock_irqrestore(&card->lock, flags);
840 out:
841 memcpy(&card->seqno.pdu_hdr_ack,
842 QETH_PDU_HEADER_SEQ_NO(iob->data),
843 QETH_SEQ_NO_LENGTH);
844 qeth_release_buffer(channel, iob);
845 }
846
qeth_setup_channel(struct qeth_channel * channel)847 static int qeth_setup_channel(struct qeth_channel *channel)
848 {
849 int cnt;
850
851 QETH_DBF_TEXT(SETUP, 2, "setupch");
852 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
853 channel->iob[cnt].data =
854 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
855 if (channel->iob[cnt].data == NULL)
856 break;
857 channel->iob[cnt].state = BUF_STATE_FREE;
858 channel->iob[cnt].channel = channel;
859 channel->iob[cnt].callback = qeth_send_control_data_cb;
860 channel->iob[cnt].rc = 0;
861 }
862 if (cnt < QETH_CMD_BUFFER_NO) {
863 while (cnt-- > 0)
864 kfree(channel->iob[cnt].data);
865 return -ENOMEM;
866 }
867 channel->buf_no = 0;
868 channel->io_buf_no = 0;
869 atomic_set(&channel->irq_pending, 0);
870 spin_lock_init(&channel->iob_lock);
871
872 init_waitqueue_head(&channel->wait_q);
873 return 0;
874 }
875
qeth_set_thread_start_bit(struct qeth_card * card,unsigned long thread)876 static int qeth_set_thread_start_bit(struct qeth_card *card,
877 unsigned long thread)
878 {
879 unsigned long flags;
880
881 spin_lock_irqsave(&card->thread_mask_lock, flags);
882 if (!(card->thread_allowed_mask & thread) ||
883 (card->thread_start_mask & thread)) {
884 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
885 return -EPERM;
886 }
887 card->thread_start_mask |= thread;
888 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
889 return 0;
890 }
891
qeth_clear_thread_start_bit(struct qeth_card * card,unsigned long thread)892 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
893 {
894 unsigned long flags;
895
896 spin_lock_irqsave(&card->thread_mask_lock, flags);
897 card->thread_start_mask &= ~thread;
898 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
899 wake_up(&card->wait_q);
900 }
901 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
902
qeth_clear_thread_running_bit(struct qeth_card * card,unsigned long thread)903 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
904 {
905 unsigned long flags;
906
907 spin_lock_irqsave(&card->thread_mask_lock, flags);
908 card->thread_running_mask &= ~thread;
909 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
910 wake_up(&card->wait_q);
911 }
912 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
913
__qeth_do_run_thread(struct qeth_card * card,unsigned long thread)914 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
915 {
916 unsigned long flags;
917 int rc = 0;
918
919 spin_lock_irqsave(&card->thread_mask_lock, flags);
920 if (card->thread_start_mask & thread) {
921 if ((card->thread_allowed_mask & thread) &&
922 !(card->thread_running_mask & thread)) {
923 rc = 1;
924 card->thread_start_mask &= ~thread;
925 card->thread_running_mask |= thread;
926 } else
927 rc = -EPERM;
928 }
929 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
930 return rc;
931 }
932
qeth_do_run_thread(struct qeth_card * card,unsigned long thread)933 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
934 {
935 int rc = 0;
936
937 wait_event(card->wait_q,
938 (rc = __qeth_do_run_thread(card, thread)) >= 0);
939 return rc;
940 }
941 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
942
qeth_schedule_recovery(struct qeth_card * card)943 void qeth_schedule_recovery(struct qeth_card *card)
944 {
945 QETH_CARD_TEXT(card, 2, "startrec");
946 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
947 schedule_work(&card->kernel_thread_starter);
948 }
949 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
950
qeth_get_problem(struct ccw_device * cdev,struct irb * irb)951 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
952 {
953 int dstat, cstat;
954 char *sense;
955 struct qeth_card *card;
956
957 sense = (char *) irb->ecw;
958 cstat = irb->scsw.cmd.cstat;
959 dstat = irb->scsw.cmd.dstat;
960 card = CARD_FROM_CDEV(cdev);
961
962 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
963 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
964 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
965 QETH_CARD_TEXT(card, 2, "CGENCHK");
966 dev_warn(&cdev->dev, "The qeth device driver "
967 "failed to recover an error on the device\n");
968 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
969 dev_name(&cdev->dev), dstat, cstat);
970 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
971 16, 1, irb, 64, 1);
972 return 1;
973 }
974
975 if (dstat & DEV_STAT_UNIT_CHECK) {
976 if (sense[SENSE_RESETTING_EVENT_BYTE] &
977 SENSE_RESETTING_EVENT_FLAG) {
978 QETH_CARD_TEXT(card, 2, "REVIND");
979 return 1;
980 }
981 if (sense[SENSE_COMMAND_REJECT_BYTE] &
982 SENSE_COMMAND_REJECT_FLAG) {
983 QETH_CARD_TEXT(card, 2, "CMDREJi");
984 return 1;
985 }
986 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
987 QETH_CARD_TEXT(card, 2, "AFFE");
988 return 1;
989 }
990 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
991 QETH_CARD_TEXT(card, 2, "ZEROSEN");
992 return 0;
993 }
994 QETH_CARD_TEXT(card, 2, "DGENCHK");
995 return 1;
996 }
997 return 0;
998 }
999
__qeth_check_irb_error(struct ccw_device * cdev,unsigned long intparm,struct irb * irb)1000 static long __qeth_check_irb_error(struct ccw_device *cdev,
1001 unsigned long intparm, struct irb *irb)
1002 {
1003 struct qeth_card *card;
1004
1005 card = CARD_FROM_CDEV(cdev);
1006
1007 if (!IS_ERR(irb))
1008 return 0;
1009
1010 switch (PTR_ERR(irb)) {
1011 case -EIO:
1012 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1013 dev_name(&cdev->dev));
1014 QETH_CARD_TEXT(card, 2, "ckirberr");
1015 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1016 break;
1017 case -ETIMEDOUT:
1018 dev_warn(&cdev->dev, "A hardware operation timed out"
1019 " on the device\n");
1020 QETH_CARD_TEXT(card, 2, "ckirberr");
1021 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1022 if (intparm == QETH_RCD_PARM) {
1023 if (card && (card->data.ccwdev == cdev)) {
1024 card->data.state = CH_STATE_DOWN;
1025 wake_up(&card->wait_q);
1026 }
1027 }
1028 break;
1029 default:
1030 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1031 dev_name(&cdev->dev), PTR_ERR(irb));
1032 QETH_CARD_TEXT(card, 2, "ckirberr");
1033 QETH_CARD_TEXT(card, 2, " rc???");
1034 }
1035 return PTR_ERR(irb);
1036 }
1037
qeth_irq(struct ccw_device * cdev,unsigned long intparm,struct irb * irb)1038 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1039 struct irb *irb)
1040 {
1041 int rc;
1042 int cstat, dstat;
1043 struct qeth_cmd_buffer *buffer;
1044 struct qeth_channel *channel;
1045 struct qeth_card *card;
1046 struct qeth_cmd_buffer *iob;
1047 __u8 index;
1048
1049 if (__qeth_check_irb_error(cdev, intparm, irb))
1050 return;
1051 cstat = irb->scsw.cmd.cstat;
1052 dstat = irb->scsw.cmd.dstat;
1053
1054 card = CARD_FROM_CDEV(cdev);
1055 if (!card)
1056 return;
1057
1058 QETH_CARD_TEXT(card, 5, "irq");
1059
1060 if (card->read.ccwdev == cdev) {
1061 channel = &card->read;
1062 QETH_CARD_TEXT(card, 5, "read");
1063 } else if (card->write.ccwdev == cdev) {
1064 channel = &card->write;
1065 QETH_CARD_TEXT(card, 5, "write");
1066 } else {
1067 channel = &card->data;
1068 QETH_CARD_TEXT(card, 5, "data");
1069 }
1070 atomic_set(&channel->irq_pending, 0);
1071
1072 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1073 channel->state = CH_STATE_STOPPED;
1074
1075 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1076 channel->state = CH_STATE_HALTED;
1077
1078 /*let's wake up immediately on data channel*/
1079 if ((channel == &card->data) && (intparm != 0) &&
1080 (intparm != QETH_RCD_PARM))
1081 goto out;
1082
1083 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1084 QETH_CARD_TEXT(card, 6, "clrchpar");
1085 /* we don't have to handle this further */
1086 intparm = 0;
1087 }
1088 if (intparm == QETH_HALT_CHANNEL_PARM) {
1089 QETH_CARD_TEXT(card, 6, "hltchpar");
1090 /* we don't have to handle this further */
1091 intparm = 0;
1092 }
1093 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1094 (dstat & DEV_STAT_UNIT_CHECK) ||
1095 (cstat)) {
1096 if (irb->esw.esw0.erw.cons) {
1097 dev_warn(&channel->ccwdev->dev,
1098 "The qeth device driver failed to recover "
1099 "an error on the device\n");
1100 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1101 "0x%X dstat 0x%X\n",
1102 dev_name(&channel->ccwdev->dev), cstat, dstat);
1103 print_hex_dump(KERN_WARNING, "qeth: irb ",
1104 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1105 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1106 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1107 }
1108 if (intparm == QETH_RCD_PARM) {
1109 channel->state = CH_STATE_DOWN;
1110 goto out;
1111 }
1112 rc = qeth_get_problem(cdev, irb);
1113 if (rc) {
1114 qeth_clear_ipacmd_list(card);
1115 qeth_schedule_recovery(card);
1116 goto out;
1117 }
1118 }
1119
1120 if (intparm == QETH_RCD_PARM) {
1121 channel->state = CH_STATE_RCD_DONE;
1122 goto out;
1123 }
1124 if (intparm) {
1125 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1126 buffer->state = BUF_STATE_PROCESSED;
1127 }
1128 if (channel == &card->data)
1129 return;
1130 if (channel == &card->read &&
1131 channel->state == CH_STATE_UP)
1132 qeth_issue_next_read(card);
1133
1134 iob = channel->iob;
1135 index = channel->buf_no;
1136 while (iob[index].state == BUF_STATE_PROCESSED) {
1137 if (iob[index].callback != NULL)
1138 iob[index].callback(channel, iob + index);
1139
1140 index = (index + 1) % QETH_CMD_BUFFER_NO;
1141 }
1142 channel->buf_no = index;
1143 out:
1144 wake_up(&card->wait_q);
1145 return;
1146 }
1147
qeth_notify_skbs(struct qeth_qdio_out_q * q,struct qeth_qdio_out_buffer * buf,enum iucv_tx_notify notification)1148 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1149 struct qeth_qdio_out_buffer *buf,
1150 enum iucv_tx_notify notification)
1151 {
1152 struct sk_buff *skb;
1153
1154 if (skb_queue_empty(&buf->skb_list))
1155 goto out;
1156 skb = skb_peek(&buf->skb_list);
1157 while (skb) {
1158 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1159 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1160 if (skb->protocol == ETH_P_AF_IUCV) {
1161 if (skb->sk) {
1162 struct iucv_sock *iucv = iucv_sk(skb->sk);
1163 iucv->sk_txnotify(skb, notification);
1164 }
1165 }
1166 if (skb_queue_is_last(&buf->skb_list, skb))
1167 skb = NULL;
1168 else
1169 skb = skb_queue_next(&buf->skb_list, skb);
1170 }
1171 out:
1172 return;
1173 }
1174
qeth_release_skbs(struct qeth_qdio_out_buffer * buf)1175 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1176 {
1177 struct sk_buff *skb;
1178 struct iucv_sock *iucv;
1179 int notify_general_error = 0;
1180
1181 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1182 notify_general_error = 1;
1183
1184 /* release may never happen from within CQ tasklet scope */
1185 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1186
1187 skb = skb_dequeue(&buf->skb_list);
1188 while (skb) {
1189 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1190 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1191 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1192 if (skb->sk) {
1193 iucv = iucv_sk(skb->sk);
1194 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1195 }
1196 }
1197 atomic_dec(&skb->users);
1198 dev_kfree_skb_any(skb);
1199 skb = skb_dequeue(&buf->skb_list);
1200 }
1201 }
1202
qeth_clear_output_buffer(struct qeth_qdio_out_q * queue,struct qeth_qdio_out_buffer * buf,enum qeth_qdio_buffer_states newbufstate)1203 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1204 struct qeth_qdio_out_buffer *buf,
1205 enum qeth_qdio_buffer_states newbufstate)
1206 {
1207 int i;
1208
1209 /* is PCI flag set on buffer? */
1210 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1211 atomic_dec(&queue->set_pci_flags_count);
1212
1213 if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1214 qeth_release_skbs(buf);
1215 }
1216 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1217 if (buf->buffer->element[i].addr && buf->is_header[i])
1218 kmem_cache_free(qeth_core_header_cache,
1219 buf->buffer->element[i].addr);
1220 buf->is_header[i] = 0;
1221 buf->buffer->element[i].length = 0;
1222 buf->buffer->element[i].addr = NULL;
1223 buf->buffer->element[i].eflags = 0;
1224 buf->buffer->element[i].sflags = 0;
1225 }
1226 buf->buffer->element[15].eflags = 0;
1227 buf->buffer->element[15].sflags = 0;
1228 buf->next_element_to_fill = 0;
1229 atomic_set(&buf->state, newbufstate);
1230 }
1231
qeth_clear_outq_buffers(struct qeth_qdio_out_q * q,int free)1232 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1233 {
1234 int j;
1235
1236 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1237 if (!q->bufs[j])
1238 continue;
1239 qeth_cleanup_handled_pending(q, j, 1);
1240 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1241 if (free) {
1242 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1243 q->bufs[j] = NULL;
1244 }
1245 }
1246 }
1247
qeth_clear_qdio_buffers(struct qeth_card * card)1248 void qeth_clear_qdio_buffers(struct qeth_card *card)
1249 {
1250 int i;
1251
1252 QETH_CARD_TEXT(card, 2, "clearqdbf");
1253 /* clear outbound buffers to free skbs */
1254 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1255 if (card->qdio.out_qs[i]) {
1256 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1257 }
1258 }
1259 }
1260 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1261
qeth_free_buffer_pool(struct qeth_card * card)1262 static void qeth_free_buffer_pool(struct qeth_card *card)
1263 {
1264 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1265 int i = 0;
1266 list_for_each_entry_safe(pool_entry, tmp,
1267 &card->qdio.init_pool.entry_list, init_list){
1268 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1269 free_page((unsigned long)pool_entry->elements[i]);
1270 list_del(&pool_entry->init_list);
1271 kfree(pool_entry);
1272 }
1273 }
1274
qeth_free_qdio_buffers(struct qeth_card * card)1275 static void qeth_free_qdio_buffers(struct qeth_card *card)
1276 {
1277 int i, j;
1278
1279 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
1280 QETH_QDIO_UNINITIALIZED)
1281 return;
1282
1283 qeth_free_cq(card);
1284 cancel_delayed_work_sync(&card->buffer_reclaim_work);
1285 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1286 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
1287 kfree(card->qdio.in_q);
1288 card->qdio.in_q = NULL;
1289 /* inbound buffer pool */
1290 qeth_free_buffer_pool(card);
1291 /* free outbound qdio_qs */
1292 if (card->qdio.out_qs) {
1293 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1294 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
1295 kfree(card->qdio.out_qs[i]);
1296 }
1297 kfree(card->qdio.out_qs);
1298 card->qdio.out_qs = NULL;
1299 }
1300 }
1301
qeth_clean_channel(struct qeth_channel * channel)1302 static void qeth_clean_channel(struct qeth_channel *channel)
1303 {
1304 int cnt;
1305
1306 QETH_DBF_TEXT(SETUP, 2, "freech");
1307 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1308 kfree(channel->iob[cnt].data);
1309 }
1310
qeth_set_single_write_queues(struct qeth_card * card)1311 static void qeth_set_single_write_queues(struct qeth_card *card)
1312 {
1313 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1314 (card->qdio.no_out_queues == 4))
1315 qeth_free_qdio_buffers(card);
1316
1317 card->qdio.no_out_queues = 1;
1318 if (card->qdio.default_out_queue != 0)
1319 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1320
1321 card->qdio.default_out_queue = 0;
1322 }
1323
qeth_set_multiple_write_queues(struct qeth_card * card)1324 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1325 {
1326 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1327 (card->qdio.no_out_queues == 1)) {
1328 qeth_free_qdio_buffers(card);
1329 card->qdio.default_out_queue = 2;
1330 }
1331 card->qdio.no_out_queues = 4;
1332 }
1333
qeth_update_from_chp_desc(struct qeth_card * card)1334 static void qeth_update_from_chp_desc(struct qeth_card *card)
1335 {
1336 struct ccw_device *ccwdev;
1337 struct channelPath_dsc {
1338 u8 flags;
1339 u8 lsn;
1340 u8 desc;
1341 u8 chpid;
1342 u8 swla;
1343 u8 zeroes;
1344 u8 chla;
1345 u8 chpp;
1346 } *chp_dsc;
1347
1348 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1349
1350 ccwdev = card->data.ccwdev;
1351 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1352 if (!chp_dsc)
1353 goto out;
1354
1355 card->info.func_level = 0x4100 + chp_dsc->desc;
1356 if (card->info.type == QETH_CARD_TYPE_IQD)
1357 goto out;
1358
1359 /* CHPP field bit 6 == 1 -> single queue */
1360 if ((chp_dsc->chpp & 0x02) == 0x02)
1361 qeth_set_single_write_queues(card);
1362 else
1363 qeth_set_multiple_write_queues(card);
1364 out:
1365 kfree(chp_dsc);
1366 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1367 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1368 }
1369
qeth_init_qdio_info(struct qeth_card * card)1370 static void qeth_init_qdio_info(struct qeth_card *card)
1371 {
1372 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1373 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1374 /* inbound */
1375 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1376 if (card->info.type == QETH_CARD_TYPE_IQD)
1377 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1378 else
1379 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1380 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1381 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1382 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1383 }
1384
qeth_set_intial_options(struct qeth_card * card)1385 static void qeth_set_intial_options(struct qeth_card *card)
1386 {
1387 card->options.route4.type = NO_ROUTER;
1388 card->options.route6.type = NO_ROUTER;
1389 card->options.fake_broadcast = 0;
1390 card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1391 card->options.performance_stats = 0;
1392 card->options.rx_sg_cb = QETH_RX_SG_CB;
1393 card->options.isolation = ISOLATION_MODE_NONE;
1394 card->options.cq = QETH_CQ_DISABLED;
1395 }
1396
qeth_do_start_thread(struct qeth_card * card,unsigned long thread)1397 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1398 {
1399 unsigned long flags;
1400 int rc = 0;
1401
1402 spin_lock_irqsave(&card->thread_mask_lock, flags);
1403 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1404 (u8) card->thread_start_mask,
1405 (u8) card->thread_allowed_mask,
1406 (u8) card->thread_running_mask);
1407 rc = (card->thread_start_mask & thread);
1408 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1409 return rc;
1410 }
1411
qeth_start_kernel_thread(struct work_struct * work)1412 static void qeth_start_kernel_thread(struct work_struct *work)
1413 {
1414 struct task_struct *ts;
1415 struct qeth_card *card = container_of(work, struct qeth_card,
1416 kernel_thread_starter);
1417 QETH_CARD_TEXT(card , 2, "strthrd");
1418
1419 if (card->read.state != CH_STATE_UP &&
1420 card->write.state != CH_STATE_UP)
1421 return;
1422 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1423 ts = kthread_run(card->discipline->recover, (void *)card,
1424 "qeth_recover");
1425 if (IS_ERR(ts)) {
1426 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1427 qeth_clear_thread_running_bit(card,
1428 QETH_RECOVER_THREAD);
1429 }
1430 }
1431 }
1432
qeth_setup_card(struct qeth_card * card)1433 static int qeth_setup_card(struct qeth_card *card)
1434 {
1435
1436 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1437 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1438
1439 card->read.state = CH_STATE_DOWN;
1440 card->write.state = CH_STATE_DOWN;
1441 card->data.state = CH_STATE_DOWN;
1442 card->state = CARD_STATE_DOWN;
1443 card->lan_online = 0;
1444 card->read_or_write_problem = 0;
1445 card->dev = NULL;
1446 spin_lock_init(&card->vlanlock);
1447 spin_lock_init(&card->mclock);
1448 spin_lock_init(&card->lock);
1449 spin_lock_init(&card->ip_lock);
1450 spin_lock_init(&card->thread_mask_lock);
1451 mutex_init(&card->conf_mutex);
1452 mutex_init(&card->discipline_mutex);
1453 card->thread_start_mask = 0;
1454 card->thread_allowed_mask = 0;
1455 card->thread_running_mask = 0;
1456 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1457 INIT_LIST_HEAD(&card->ip_list);
1458 INIT_LIST_HEAD(card->ip_tbd_list);
1459 INIT_LIST_HEAD(&card->cmd_waiter_list);
1460 init_waitqueue_head(&card->wait_q);
1461 /* initial options */
1462 qeth_set_intial_options(card);
1463 /* IP address takeover */
1464 INIT_LIST_HEAD(&card->ipato.entries);
1465 card->ipato.enabled = 0;
1466 card->ipato.invert4 = 0;
1467 card->ipato.invert6 = 0;
1468 /* init QDIO stuff */
1469 qeth_init_qdio_info(card);
1470 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1471 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1472 return 0;
1473 }
1474
qeth_core_sl_print(struct seq_file * m,struct service_level * slr)1475 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1476 {
1477 struct qeth_card *card = container_of(slr, struct qeth_card,
1478 qeth_service_level);
1479 if (card->info.mcl_level[0])
1480 seq_printf(m, "qeth: %s firmware level %s\n",
1481 CARD_BUS_ID(card), card->info.mcl_level);
1482 }
1483
qeth_alloc_card(void)1484 static struct qeth_card *qeth_alloc_card(void)
1485 {
1486 struct qeth_card *card;
1487
1488 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1489 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1490 if (!card)
1491 goto out;
1492 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1493 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1494 if (!card->ip_tbd_list) {
1495 QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
1496 goto out_card;
1497 }
1498 if (qeth_setup_channel(&card->read))
1499 goto out_ip;
1500 if (qeth_setup_channel(&card->write))
1501 goto out_channel;
1502 card->options.layer2 = -1;
1503 card->qeth_service_level.seq_print = qeth_core_sl_print;
1504 register_service_level(&card->qeth_service_level);
1505 return card;
1506
1507 out_channel:
1508 qeth_clean_channel(&card->read);
1509 out_ip:
1510 kfree(card->ip_tbd_list);
1511 out_card:
1512 kfree(card);
1513 out:
1514 return NULL;
1515 }
1516
qeth_determine_card_type(struct qeth_card * card)1517 static int qeth_determine_card_type(struct qeth_card *card)
1518 {
1519 int i = 0;
1520
1521 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1522
1523 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1524 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1525 while (known_devices[i][QETH_DEV_MODEL_IND]) {
1526 if ((CARD_RDEV(card)->id.dev_type ==
1527 known_devices[i][QETH_DEV_TYPE_IND]) &&
1528 (CARD_RDEV(card)->id.dev_model ==
1529 known_devices[i][QETH_DEV_MODEL_IND])) {
1530 card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1531 card->qdio.no_out_queues =
1532 known_devices[i][QETH_QUEUE_NO_IND];
1533 card->qdio.no_in_queues = 1;
1534 card->info.is_multicast_different =
1535 known_devices[i][QETH_MULTICAST_IND];
1536 qeth_update_from_chp_desc(card);
1537 return 0;
1538 }
1539 i++;
1540 }
1541 card->info.type = QETH_CARD_TYPE_UNKNOWN;
1542 dev_err(&card->gdev->dev, "The adapter hardware is of an "
1543 "unknown type\n");
1544 return -ENOENT;
1545 }
1546
qeth_clear_channel(struct qeth_channel * channel)1547 static int qeth_clear_channel(struct qeth_channel *channel)
1548 {
1549 unsigned long flags;
1550 struct qeth_card *card;
1551 int rc;
1552
1553 card = CARD_FROM_CDEV(channel->ccwdev);
1554 QETH_CARD_TEXT(card, 3, "clearch");
1555 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1556 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1557 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1558
1559 if (rc)
1560 return rc;
1561 rc = wait_event_interruptible_timeout(card->wait_q,
1562 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1563 if (rc == -ERESTARTSYS)
1564 return rc;
1565 if (channel->state != CH_STATE_STOPPED)
1566 return -ETIME;
1567 channel->state = CH_STATE_DOWN;
1568 return 0;
1569 }
1570
qeth_halt_channel(struct qeth_channel * channel)1571 static int qeth_halt_channel(struct qeth_channel *channel)
1572 {
1573 unsigned long flags;
1574 struct qeth_card *card;
1575 int rc;
1576
1577 card = CARD_FROM_CDEV(channel->ccwdev);
1578 QETH_CARD_TEXT(card, 3, "haltch");
1579 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1580 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1581 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1582
1583 if (rc)
1584 return rc;
1585 rc = wait_event_interruptible_timeout(card->wait_q,
1586 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1587 if (rc == -ERESTARTSYS)
1588 return rc;
1589 if (channel->state != CH_STATE_HALTED)
1590 return -ETIME;
1591 return 0;
1592 }
1593
qeth_halt_channels(struct qeth_card * card)1594 static int qeth_halt_channels(struct qeth_card *card)
1595 {
1596 int rc1 = 0, rc2 = 0, rc3 = 0;
1597
1598 QETH_CARD_TEXT(card, 3, "haltchs");
1599 rc1 = qeth_halt_channel(&card->read);
1600 rc2 = qeth_halt_channel(&card->write);
1601 rc3 = qeth_halt_channel(&card->data);
1602 if (rc1)
1603 return rc1;
1604 if (rc2)
1605 return rc2;
1606 return rc3;
1607 }
1608
qeth_clear_channels(struct qeth_card * card)1609 static int qeth_clear_channels(struct qeth_card *card)
1610 {
1611 int rc1 = 0, rc2 = 0, rc3 = 0;
1612
1613 QETH_CARD_TEXT(card, 3, "clearchs");
1614 rc1 = qeth_clear_channel(&card->read);
1615 rc2 = qeth_clear_channel(&card->write);
1616 rc3 = qeth_clear_channel(&card->data);
1617 if (rc1)
1618 return rc1;
1619 if (rc2)
1620 return rc2;
1621 return rc3;
1622 }
1623
qeth_clear_halt_card(struct qeth_card * card,int halt)1624 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1625 {
1626 int rc = 0;
1627
1628 QETH_CARD_TEXT(card, 3, "clhacrd");
1629
1630 if (halt)
1631 rc = qeth_halt_channels(card);
1632 if (rc)
1633 return rc;
1634 return qeth_clear_channels(card);
1635 }
1636
qeth_qdio_clear_card(struct qeth_card * card,int use_halt)1637 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1638 {
1639 int rc = 0;
1640
1641 QETH_CARD_TEXT(card, 3, "qdioclr");
1642 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1643 QETH_QDIO_CLEANING)) {
1644 case QETH_QDIO_ESTABLISHED:
1645 if (card->info.type == QETH_CARD_TYPE_IQD)
1646 rc = qdio_shutdown(CARD_DDEV(card),
1647 QDIO_FLAG_CLEANUP_USING_HALT);
1648 else
1649 rc = qdio_shutdown(CARD_DDEV(card),
1650 QDIO_FLAG_CLEANUP_USING_CLEAR);
1651 if (rc)
1652 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1653 qdio_free(CARD_DDEV(card));
1654 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1655 break;
1656 case QETH_QDIO_CLEANING:
1657 return rc;
1658 default:
1659 break;
1660 }
1661 rc = qeth_clear_halt_card(card, use_halt);
1662 if (rc)
1663 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1664 card->state = CARD_STATE_DOWN;
1665 return rc;
1666 }
1667 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1668
qeth_read_conf_data(struct qeth_card * card,void ** buffer,int * length)1669 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1670 int *length)
1671 {
1672 struct ciw *ciw;
1673 char *rcd_buf;
1674 int ret;
1675 struct qeth_channel *channel = &card->data;
1676 unsigned long flags;
1677
1678 /*
1679 * scan for RCD command in extended SenseID data
1680 */
1681 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1682 if (!ciw || ciw->cmd == 0)
1683 return -EOPNOTSUPP;
1684 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1685 if (!rcd_buf)
1686 return -ENOMEM;
1687
1688 channel->ccw.cmd_code = ciw->cmd;
1689 channel->ccw.cda = (__u32) __pa(rcd_buf);
1690 channel->ccw.count = ciw->count;
1691 channel->ccw.flags = CCW_FLAG_SLI;
1692 channel->state = CH_STATE_RCD;
1693 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1694 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1695 QETH_RCD_PARM, LPM_ANYPATH, 0,
1696 QETH_RCD_TIMEOUT);
1697 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1698 if (!ret)
1699 wait_event(card->wait_q,
1700 (channel->state == CH_STATE_RCD_DONE ||
1701 channel->state == CH_STATE_DOWN));
1702 if (channel->state == CH_STATE_DOWN)
1703 ret = -EIO;
1704 else
1705 channel->state = CH_STATE_DOWN;
1706 if (ret) {
1707 kfree(rcd_buf);
1708 *buffer = NULL;
1709 *length = 0;
1710 } else {
1711 *length = ciw->count;
1712 *buffer = rcd_buf;
1713 }
1714 return ret;
1715 }
1716
qeth_configure_unitaddr(struct qeth_card * card,char * prcd)1717 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1718 {
1719 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1720 card->info.chpid = prcd[30];
1721 card->info.unit_addr2 = prcd[31];
1722 card->info.cula = prcd[63];
1723 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1724 (prcd[0x11] == _ascebc['M']));
1725 }
1726
qeth_configure_blkt_default(struct qeth_card * card,char * prcd)1727 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1728 {
1729 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1730
1731 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1732 (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1733 card->info.blkt.time_total = 250;
1734 card->info.blkt.inter_packet = 5;
1735 card->info.blkt.inter_packet_jumbo = 15;
1736 } else {
1737 card->info.blkt.time_total = 0;
1738 card->info.blkt.inter_packet = 0;
1739 card->info.blkt.inter_packet_jumbo = 0;
1740 }
1741 }
1742
qeth_init_tokens(struct qeth_card * card)1743 static void qeth_init_tokens(struct qeth_card *card)
1744 {
1745 card->token.issuer_rm_w = 0x00010103UL;
1746 card->token.cm_filter_w = 0x00010108UL;
1747 card->token.cm_connection_w = 0x0001010aUL;
1748 card->token.ulp_filter_w = 0x0001010bUL;
1749 card->token.ulp_connection_w = 0x0001010dUL;
1750 }
1751
qeth_init_func_level(struct qeth_card * card)1752 static void qeth_init_func_level(struct qeth_card *card)
1753 {
1754 switch (card->info.type) {
1755 case QETH_CARD_TYPE_IQD:
1756 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1757 break;
1758 case QETH_CARD_TYPE_OSD:
1759 case QETH_CARD_TYPE_OSN:
1760 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1761 break;
1762 default:
1763 break;
1764 }
1765 }
1766
qeth_idx_activate_get_answer(struct qeth_channel * channel,void (* idx_reply_cb)(struct qeth_channel *,struct qeth_cmd_buffer *))1767 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1768 void (*idx_reply_cb)(struct qeth_channel *,
1769 struct qeth_cmd_buffer *))
1770 {
1771 struct qeth_cmd_buffer *iob;
1772 unsigned long flags;
1773 int rc;
1774 struct qeth_card *card;
1775
1776 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1777 card = CARD_FROM_CDEV(channel->ccwdev);
1778 iob = qeth_get_buffer(channel);
1779 iob->callback = idx_reply_cb;
1780 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1781 channel->ccw.count = QETH_BUFSIZE;
1782 channel->ccw.cda = (__u32) __pa(iob->data);
1783
1784 wait_event(card->wait_q,
1785 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1786 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1787 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1788 rc = ccw_device_start(channel->ccwdev,
1789 &channel->ccw, (addr_t) iob, 0, 0);
1790 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1791
1792 if (rc) {
1793 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1794 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1795 atomic_set(&channel->irq_pending, 0);
1796 wake_up(&card->wait_q);
1797 return rc;
1798 }
1799 rc = wait_event_interruptible_timeout(card->wait_q,
1800 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1801 if (rc == -ERESTARTSYS)
1802 return rc;
1803 if (channel->state != CH_STATE_UP) {
1804 rc = -ETIME;
1805 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1806 qeth_clear_cmd_buffers(channel);
1807 } else
1808 rc = 0;
1809 return rc;
1810 }
1811
qeth_idx_activate_channel(struct qeth_channel * channel,void (* idx_reply_cb)(struct qeth_channel *,struct qeth_cmd_buffer *))1812 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1813 void (*idx_reply_cb)(struct qeth_channel *,
1814 struct qeth_cmd_buffer *))
1815 {
1816 struct qeth_card *card;
1817 struct qeth_cmd_buffer *iob;
1818 unsigned long flags;
1819 __u16 temp;
1820 __u8 tmp;
1821 int rc;
1822 struct ccw_dev_id temp_devid;
1823
1824 card = CARD_FROM_CDEV(channel->ccwdev);
1825
1826 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1827
1828 iob = qeth_get_buffer(channel);
1829 iob->callback = idx_reply_cb;
1830 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1831 channel->ccw.count = IDX_ACTIVATE_SIZE;
1832 channel->ccw.cda = (__u32) __pa(iob->data);
1833 if (channel == &card->write) {
1834 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1835 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1836 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1837 card->seqno.trans_hdr++;
1838 } else {
1839 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1840 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1841 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1842 }
1843 tmp = ((__u8)card->info.portno) | 0x80;
1844 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1845 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1846 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1847 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1848 &card->info.func_level, sizeof(__u16));
1849 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1850 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1851 temp = (card->info.cula << 8) + card->info.unit_addr2;
1852 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1853
1854 wait_event(card->wait_q,
1855 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1856 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1857 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1858 rc = ccw_device_start(channel->ccwdev,
1859 &channel->ccw, (addr_t) iob, 0, 0);
1860 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1861
1862 if (rc) {
1863 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1864 rc);
1865 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1866 atomic_set(&channel->irq_pending, 0);
1867 wake_up(&card->wait_q);
1868 return rc;
1869 }
1870 rc = wait_event_interruptible_timeout(card->wait_q,
1871 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1872 if (rc == -ERESTARTSYS)
1873 return rc;
1874 if (channel->state != CH_STATE_ACTIVATING) {
1875 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1876 " failed to recover an error on the device\n");
1877 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1878 dev_name(&channel->ccwdev->dev));
1879 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1880 qeth_clear_cmd_buffers(channel);
1881 return -ETIME;
1882 }
1883 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1884 }
1885
qeth_peer_func_level(int level)1886 static int qeth_peer_func_level(int level)
1887 {
1888 if ((level & 0xff) == 8)
1889 return (level & 0xff) + 0x400;
1890 if (((level >> 8) & 3) == 1)
1891 return (level & 0xff) + 0x200;
1892 return level;
1893 }
1894
qeth_idx_write_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)1895 static void qeth_idx_write_cb(struct qeth_channel *channel,
1896 struct qeth_cmd_buffer *iob)
1897 {
1898 struct qeth_card *card;
1899 __u16 temp;
1900
1901 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1902
1903 if (channel->state == CH_STATE_DOWN) {
1904 channel->state = CH_STATE_ACTIVATING;
1905 goto out;
1906 }
1907 card = CARD_FROM_CDEV(channel->ccwdev);
1908
1909 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1910 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1911 dev_err(&card->write.ccwdev->dev,
1912 "The adapter is used exclusively by another "
1913 "host\n");
1914 else
1915 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1916 " negative reply\n",
1917 dev_name(&card->write.ccwdev->dev));
1918 goto out;
1919 }
1920 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1921 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1922 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1923 "function level mismatch (sent: 0x%x, received: "
1924 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1925 card->info.func_level, temp);
1926 goto out;
1927 }
1928 channel->state = CH_STATE_UP;
1929 out:
1930 qeth_release_buffer(channel, iob);
1931 }
1932
qeth_idx_read_cb(struct qeth_channel * channel,struct qeth_cmd_buffer * iob)1933 static void qeth_idx_read_cb(struct qeth_channel *channel,
1934 struct qeth_cmd_buffer *iob)
1935 {
1936 struct qeth_card *card;
1937 __u16 temp;
1938
1939 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1940 if (channel->state == CH_STATE_DOWN) {
1941 channel->state = CH_STATE_ACTIVATING;
1942 goto out;
1943 }
1944
1945 card = CARD_FROM_CDEV(channel->ccwdev);
1946 if (qeth_check_idx_response(card, iob->data))
1947 goto out;
1948
1949 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1950 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1951 case QETH_IDX_ACT_ERR_EXCL:
1952 dev_err(&card->write.ccwdev->dev,
1953 "The adapter is used exclusively by another "
1954 "host\n");
1955 break;
1956 case QETH_IDX_ACT_ERR_AUTH:
1957 case QETH_IDX_ACT_ERR_AUTH_USER:
1958 dev_err(&card->read.ccwdev->dev,
1959 "Setting the device online failed because of "
1960 "insufficient authorization\n");
1961 break;
1962 default:
1963 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1964 " negative reply\n",
1965 dev_name(&card->read.ccwdev->dev));
1966 }
1967 QETH_CARD_TEXT_(card, 2, "idxread%c",
1968 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1969 goto out;
1970 }
1971
1972 /**
1973 * * temporary fix for microcode bug
1974 * * to revert it,replace OR by AND
1975 * */
1976 if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1977 (card->info.type == QETH_CARD_TYPE_OSD))
1978 card->info.portname_required = 1;
1979
1980 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1981 if (temp != qeth_peer_func_level(card->info.func_level)) {
1982 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1983 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1984 dev_name(&card->read.ccwdev->dev),
1985 card->info.func_level, temp);
1986 goto out;
1987 }
1988 memcpy(&card->token.issuer_rm_r,
1989 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1990 QETH_MPC_TOKEN_LENGTH);
1991 memcpy(&card->info.mcl_level[0],
1992 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1993 channel->state = CH_STATE_UP;
1994 out:
1995 qeth_release_buffer(channel, iob);
1996 }
1997
qeth_prepare_control_data(struct qeth_card * card,int len,struct qeth_cmd_buffer * iob)1998 void qeth_prepare_control_data(struct qeth_card *card, int len,
1999 struct qeth_cmd_buffer *iob)
2000 {
2001 qeth_setup_ccw(&card->write, iob->data, len);
2002 iob->callback = qeth_release_buffer;
2003
2004 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2005 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2006 card->seqno.trans_hdr++;
2007 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2008 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2009 card->seqno.pdu_hdr++;
2010 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2011 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2012 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2013 }
2014 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2015
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)2016 int qeth_send_control_data(struct qeth_card *card, int len,
2017 struct qeth_cmd_buffer *iob,
2018 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2019 unsigned long),
2020 void *reply_param)
2021 {
2022 int rc;
2023 unsigned long flags;
2024 struct qeth_reply *reply = NULL;
2025 unsigned long timeout, event_timeout;
2026 struct qeth_ipa_cmd *cmd;
2027
2028 QETH_CARD_TEXT(card, 2, "sendctl");
2029
2030 if (card->read_or_write_problem) {
2031 qeth_release_buffer(iob->channel, iob);
2032 return -EIO;
2033 }
2034 reply = qeth_alloc_reply(card);
2035 if (!reply) {
2036 return -ENOMEM;
2037 }
2038 reply->callback = reply_cb;
2039 reply->param = reply_param;
2040 if (card->state == CARD_STATE_DOWN)
2041 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2042 else
2043 reply->seqno = card->seqno.ipa++;
2044 init_waitqueue_head(&reply->wait_q);
2045 spin_lock_irqsave(&card->lock, flags);
2046 list_add_tail(&reply->list, &card->cmd_waiter_list);
2047 spin_unlock_irqrestore(&card->lock, flags);
2048 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2049
2050 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2051 qeth_prepare_control_data(card, len, iob);
2052
2053 if (IS_IPA(iob->data))
2054 event_timeout = QETH_IPA_TIMEOUT;
2055 else
2056 event_timeout = QETH_TIMEOUT;
2057 timeout = jiffies + event_timeout;
2058
2059 QETH_CARD_TEXT(card, 6, "noirqpnd");
2060 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2061 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2062 (addr_t) iob, 0, 0);
2063 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2064 if (rc) {
2065 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2066 "ccw_device_start rc = %i\n",
2067 dev_name(&card->write.ccwdev->dev), rc);
2068 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2069 spin_lock_irqsave(&card->lock, flags);
2070 list_del_init(&reply->list);
2071 qeth_put_reply(reply);
2072 spin_unlock_irqrestore(&card->lock, flags);
2073 qeth_release_buffer(iob->channel, iob);
2074 atomic_set(&card->write.irq_pending, 0);
2075 wake_up(&card->wait_q);
2076 return rc;
2077 }
2078
2079 /* we have only one long running ipassist, since we can ensure
2080 process context of this command we can sleep */
2081 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2082 if ((cmd->hdr.command == IPA_CMD_SETIP) &&
2083 (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
2084 if (!wait_event_timeout(reply->wait_q,
2085 atomic_read(&reply->received), event_timeout))
2086 goto time_err;
2087 } else {
2088 while (!atomic_read(&reply->received)) {
2089 if (time_after(jiffies, timeout))
2090 goto time_err;
2091 cpu_relax();
2092 }
2093 }
2094
2095 if (reply->rc == -EIO)
2096 goto error;
2097 rc = reply->rc;
2098 qeth_put_reply(reply);
2099 return rc;
2100
2101 time_err:
2102 reply->rc = -ETIME;
2103 spin_lock_irqsave(&reply->card->lock, flags);
2104 list_del_init(&reply->list);
2105 spin_unlock_irqrestore(&reply->card->lock, flags);
2106 atomic_inc(&reply->received);
2107 error:
2108 atomic_set(&card->write.irq_pending, 0);
2109 qeth_release_buffer(iob->channel, iob);
2110 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2111 rc = reply->rc;
2112 qeth_put_reply(reply);
2113 return rc;
2114 }
2115 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2116
qeth_cm_enable_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2117 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2118 unsigned long data)
2119 {
2120 struct qeth_cmd_buffer *iob;
2121
2122 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2123
2124 iob = (struct qeth_cmd_buffer *) data;
2125 memcpy(&card->token.cm_filter_r,
2126 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2127 QETH_MPC_TOKEN_LENGTH);
2128 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2129 return 0;
2130 }
2131
qeth_cm_enable(struct qeth_card * card)2132 static int qeth_cm_enable(struct qeth_card *card)
2133 {
2134 int rc;
2135 struct qeth_cmd_buffer *iob;
2136
2137 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2138
2139 iob = qeth_wait_for_buffer(&card->write);
2140 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2141 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2142 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2143 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2144 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2145
2146 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2147 qeth_cm_enable_cb, NULL);
2148 return rc;
2149 }
2150
qeth_cm_setup_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2151 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2152 unsigned long data)
2153 {
2154
2155 struct qeth_cmd_buffer *iob;
2156
2157 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2158
2159 iob = (struct qeth_cmd_buffer *) data;
2160 memcpy(&card->token.cm_connection_r,
2161 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2162 QETH_MPC_TOKEN_LENGTH);
2163 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2164 return 0;
2165 }
2166
qeth_cm_setup(struct qeth_card * card)2167 static int qeth_cm_setup(struct qeth_card *card)
2168 {
2169 int rc;
2170 struct qeth_cmd_buffer *iob;
2171
2172 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2173
2174 iob = qeth_wait_for_buffer(&card->write);
2175 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2176 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2177 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2178 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2179 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2180 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2181 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2182 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2183 qeth_cm_setup_cb, NULL);
2184 return rc;
2185
2186 }
2187
qeth_get_initial_mtu_for_card(struct qeth_card * card)2188 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2189 {
2190 switch (card->info.type) {
2191 case QETH_CARD_TYPE_UNKNOWN:
2192 return 1500;
2193 case QETH_CARD_TYPE_IQD:
2194 return card->info.max_mtu;
2195 case QETH_CARD_TYPE_OSD:
2196 switch (card->info.link_type) {
2197 case QETH_LINK_TYPE_HSTR:
2198 case QETH_LINK_TYPE_LANE_TR:
2199 return 2000;
2200 default:
2201 return 1492;
2202 }
2203 case QETH_CARD_TYPE_OSM:
2204 case QETH_CARD_TYPE_OSX:
2205 return 1492;
2206 default:
2207 return 1500;
2208 }
2209 }
2210
qeth_get_mtu_outof_framesize(int framesize)2211 static inline int qeth_get_mtu_outof_framesize(int framesize)
2212 {
2213 switch (framesize) {
2214 case 0x4000:
2215 return 8192;
2216 case 0x6000:
2217 return 16384;
2218 case 0xa000:
2219 return 32768;
2220 case 0xffff:
2221 return 57344;
2222 default:
2223 return 0;
2224 }
2225 }
2226
qeth_mtu_is_valid(struct qeth_card * card,int mtu)2227 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2228 {
2229 switch (card->info.type) {
2230 case QETH_CARD_TYPE_OSD:
2231 case QETH_CARD_TYPE_OSM:
2232 case QETH_CARD_TYPE_OSX:
2233 case QETH_CARD_TYPE_IQD:
2234 return ((mtu >= 576) &&
2235 (mtu <= card->info.max_mtu));
2236 case QETH_CARD_TYPE_OSN:
2237 case QETH_CARD_TYPE_UNKNOWN:
2238 default:
2239 return 1;
2240 }
2241 }
2242
qeth_ulp_enable_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2243 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2244 unsigned long data)
2245 {
2246
2247 __u16 mtu, framesize;
2248 __u16 len;
2249 __u8 link_type;
2250 struct qeth_cmd_buffer *iob;
2251
2252 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2253
2254 iob = (struct qeth_cmd_buffer *) data;
2255 memcpy(&card->token.ulp_filter_r,
2256 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2257 QETH_MPC_TOKEN_LENGTH);
2258 if (card->info.type == QETH_CARD_TYPE_IQD) {
2259 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2260 mtu = qeth_get_mtu_outof_framesize(framesize);
2261 if (!mtu) {
2262 iob->rc = -EINVAL;
2263 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2264 return 0;
2265 }
2266 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2267 /* frame size has changed */
2268 if (card->dev &&
2269 ((card->dev->mtu == card->info.initial_mtu) ||
2270 (card->dev->mtu > mtu)))
2271 card->dev->mtu = mtu;
2272 qeth_free_qdio_buffers(card);
2273 }
2274 card->info.initial_mtu = mtu;
2275 card->info.max_mtu = mtu;
2276 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2277 } else {
2278 card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2279 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2280 iob->data);
2281 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2282 }
2283
2284 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2285 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2286 memcpy(&link_type,
2287 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2288 card->info.link_type = link_type;
2289 } else
2290 card->info.link_type = 0;
2291 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2292 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2293 return 0;
2294 }
2295
qeth_ulp_enable(struct qeth_card * card)2296 static int qeth_ulp_enable(struct qeth_card *card)
2297 {
2298 int rc;
2299 char prot_type;
2300 struct qeth_cmd_buffer *iob;
2301
2302 /*FIXME: trace view callbacks*/
2303 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2304
2305 iob = qeth_wait_for_buffer(&card->write);
2306 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2307
2308 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2309 (__u8) card->info.portno;
2310 if (card->options.layer2)
2311 if (card->info.type == QETH_CARD_TYPE_OSN)
2312 prot_type = QETH_PROT_OSN2;
2313 else
2314 prot_type = QETH_PROT_LAYER2;
2315 else
2316 prot_type = QETH_PROT_TCPIP;
2317
2318 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2319 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2320 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2321 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2322 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2323 memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
2324 card->info.portname, 9);
2325 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2326 qeth_ulp_enable_cb, NULL);
2327 return rc;
2328
2329 }
2330
qeth_ulp_setup_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2331 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2332 unsigned long data)
2333 {
2334 struct qeth_cmd_buffer *iob;
2335
2336 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2337
2338 iob = (struct qeth_cmd_buffer *) data;
2339 memcpy(&card->token.ulp_connection_r,
2340 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2341 QETH_MPC_TOKEN_LENGTH);
2342 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2343 3)) {
2344 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2345 dev_err(&card->gdev->dev, "A connection could not be "
2346 "established because of an OLM limit\n");
2347 iob->rc = -EMLINK;
2348 }
2349 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2350 return 0;
2351 }
2352
qeth_ulp_setup(struct qeth_card * card)2353 static int qeth_ulp_setup(struct qeth_card *card)
2354 {
2355 int rc;
2356 __u16 temp;
2357 struct qeth_cmd_buffer *iob;
2358 struct ccw_dev_id dev_id;
2359
2360 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2361
2362 iob = qeth_wait_for_buffer(&card->write);
2363 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2364
2365 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2366 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2367 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2368 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2369 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2370 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2371
2372 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2373 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2374 temp = (card->info.cula << 8) + card->info.unit_addr2;
2375 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2376 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2377 qeth_ulp_setup_cb, NULL);
2378 return rc;
2379 }
2380
qeth_init_qdio_out_buf(struct qeth_qdio_out_q * q,int bidx)2381 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2382 {
2383 int rc;
2384 struct qeth_qdio_out_buffer *newbuf;
2385
2386 rc = 0;
2387 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2388 if (!newbuf) {
2389 rc = -ENOMEM;
2390 goto out;
2391 }
2392 newbuf->buffer = &q->qdio_bufs[bidx];
2393 skb_queue_head_init(&newbuf->skb_list);
2394 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2395 newbuf->q = q;
2396 newbuf->aob = NULL;
2397 newbuf->next_pending = q->bufs[bidx];
2398 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2399 q->bufs[bidx] = newbuf;
2400 if (q->bufstates) {
2401 q->bufstates[bidx].user = newbuf;
2402 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2403 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2404 QETH_CARD_TEXT_(q->card, 2, "%lx",
2405 (long) newbuf->next_pending);
2406 }
2407 out:
2408 return rc;
2409 }
2410
2411
qeth_alloc_qdio_buffers(struct qeth_card * card)2412 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2413 {
2414 int i, j;
2415
2416 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2417
2418 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2419 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2420 return 0;
2421
2422 card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2423 GFP_KERNEL);
2424 if (!card->qdio.in_q)
2425 goto out_nomem;
2426 QETH_DBF_TEXT(SETUP, 2, "inq");
2427 QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
2428 memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
2429 /* give inbound qeth_qdio_buffers their qdio_buffers */
2430 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
2431 card->qdio.in_q->bufs[i].buffer =
2432 &card->qdio.in_q->qdio_bufs[i];
2433 card->qdio.in_q->bufs[i].rx_skb = NULL;
2434 }
2435 /* inbound buffer pool */
2436 if (qeth_alloc_buffer_pool(card))
2437 goto out_freeinq;
2438
2439 /* outbound */
2440 card->qdio.out_qs =
2441 kzalloc(card->qdio.no_out_queues *
2442 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2443 if (!card->qdio.out_qs)
2444 goto out_freepool;
2445 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2446 card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2447 GFP_KERNEL);
2448 if (!card->qdio.out_qs[i])
2449 goto out_freeoutq;
2450 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2451 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2452 card->qdio.out_qs[i]->queue_no = i;
2453 /* give outbound qeth_qdio_buffers their qdio_buffers */
2454 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2455 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2456 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2457 goto out_freeoutqbufs;
2458 }
2459 }
2460
2461 /* completion */
2462 if (qeth_alloc_cq(card))
2463 goto out_freeoutq;
2464
2465 return 0;
2466
2467 out_freeoutqbufs:
2468 while (j > 0) {
2469 --j;
2470 kmem_cache_free(qeth_qdio_outbuf_cache,
2471 card->qdio.out_qs[i]->bufs[j]);
2472 card->qdio.out_qs[i]->bufs[j] = NULL;
2473 }
2474 out_freeoutq:
2475 while (i > 0) {
2476 kfree(card->qdio.out_qs[--i]);
2477 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2478 }
2479 kfree(card->qdio.out_qs);
2480 card->qdio.out_qs = NULL;
2481 out_freepool:
2482 qeth_free_buffer_pool(card);
2483 out_freeinq:
2484 kfree(card->qdio.in_q);
2485 card->qdio.in_q = NULL;
2486 out_nomem:
2487 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2488 return -ENOMEM;
2489 }
2490
qeth_create_qib_param_field(struct qeth_card * card,char * param_field)2491 static void qeth_create_qib_param_field(struct qeth_card *card,
2492 char *param_field)
2493 {
2494
2495 param_field[0] = _ascebc['P'];
2496 param_field[1] = _ascebc['C'];
2497 param_field[2] = _ascebc['I'];
2498 param_field[3] = _ascebc['T'];
2499 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
2500 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
2501 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
2502 }
2503
qeth_create_qib_param_field_blkt(struct qeth_card * card,char * param_field)2504 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2505 char *param_field)
2506 {
2507 param_field[16] = _ascebc['B'];
2508 param_field[17] = _ascebc['L'];
2509 param_field[18] = _ascebc['K'];
2510 param_field[19] = _ascebc['T'];
2511 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
2512 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
2513 *((unsigned int *) (¶m_field[28])) =
2514 card->info.blkt.inter_packet_jumbo;
2515 }
2516
qeth_qdio_activate(struct qeth_card * card)2517 static int qeth_qdio_activate(struct qeth_card *card)
2518 {
2519 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2520 return qdio_activate(CARD_DDEV(card));
2521 }
2522
qeth_dm_act(struct qeth_card * card)2523 static int qeth_dm_act(struct qeth_card *card)
2524 {
2525 int rc;
2526 struct qeth_cmd_buffer *iob;
2527
2528 QETH_DBF_TEXT(SETUP, 2, "dmact");
2529
2530 iob = qeth_wait_for_buffer(&card->write);
2531 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2532
2533 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2534 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2535 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2536 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2537 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2538 return rc;
2539 }
2540
qeth_mpc_initialize(struct qeth_card * card)2541 static int qeth_mpc_initialize(struct qeth_card *card)
2542 {
2543 int rc;
2544
2545 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2546
2547 rc = qeth_issue_next_read(card);
2548 if (rc) {
2549 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2550 return rc;
2551 }
2552 rc = qeth_cm_enable(card);
2553 if (rc) {
2554 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2555 goto out_qdio;
2556 }
2557 rc = qeth_cm_setup(card);
2558 if (rc) {
2559 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2560 goto out_qdio;
2561 }
2562 rc = qeth_ulp_enable(card);
2563 if (rc) {
2564 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2565 goto out_qdio;
2566 }
2567 rc = qeth_ulp_setup(card);
2568 if (rc) {
2569 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2570 goto out_qdio;
2571 }
2572 rc = qeth_alloc_qdio_buffers(card);
2573 if (rc) {
2574 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2575 goto out_qdio;
2576 }
2577 rc = qeth_qdio_establish(card);
2578 if (rc) {
2579 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2580 qeth_free_qdio_buffers(card);
2581 goto out_qdio;
2582 }
2583 rc = qeth_qdio_activate(card);
2584 if (rc) {
2585 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2586 goto out_qdio;
2587 }
2588 rc = qeth_dm_act(card);
2589 if (rc) {
2590 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2591 goto out_qdio;
2592 }
2593
2594 return 0;
2595 out_qdio:
2596 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2597 return rc;
2598 }
2599
qeth_print_status_with_portname(struct qeth_card * card)2600 static void qeth_print_status_with_portname(struct qeth_card *card)
2601 {
2602 char dbf_text[15];
2603 int i;
2604
2605 sprintf(dbf_text, "%s", card->info.portname + 1);
2606 for (i = 0; i < 8; i++)
2607 dbf_text[i] =
2608 (char) _ebcasc[(__u8) dbf_text[i]];
2609 dbf_text[8] = 0;
2610 dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
2611 "with link type %s (portname: %s)\n",
2612 qeth_get_cardname(card),
2613 (card->info.mcl_level[0]) ? " (level: " : "",
2614 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2615 (card->info.mcl_level[0]) ? ")" : "",
2616 qeth_get_cardname_short(card),
2617 dbf_text);
2618
2619 }
2620
qeth_print_status_no_portname(struct qeth_card * card)2621 static void qeth_print_status_no_portname(struct qeth_card *card)
2622 {
2623 if (card->info.portname[0])
2624 dev_info(&card->gdev->dev, "Device is a%s "
2625 "card%s%s%s\nwith link type %s "
2626 "(no portname needed by interface).\n",
2627 qeth_get_cardname(card),
2628 (card->info.mcl_level[0]) ? " (level: " : "",
2629 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2630 (card->info.mcl_level[0]) ? ")" : "",
2631 qeth_get_cardname_short(card));
2632 else
2633 dev_info(&card->gdev->dev, "Device is a%s "
2634 "card%s%s%s\nwith link type %s.\n",
2635 qeth_get_cardname(card),
2636 (card->info.mcl_level[0]) ? " (level: " : "",
2637 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2638 (card->info.mcl_level[0]) ? ")" : "",
2639 qeth_get_cardname_short(card));
2640 }
2641
qeth_print_status_message(struct qeth_card * card)2642 void qeth_print_status_message(struct qeth_card *card)
2643 {
2644 switch (card->info.type) {
2645 case QETH_CARD_TYPE_OSD:
2646 case QETH_CARD_TYPE_OSM:
2647 case QETH_CARD_TYPE_OSX:
2648 /* VM will use a non-zero first character
2649 * to indicate a HiperSockets like reporting
2650 * of the level OSA sets the first character to zero
2651 * */
2652 if (!card->info.mcl_level[0]) {
2653 sprintf(card->info.mcl_level, "%02x%02x",
2654 card->info.mcl_level[2],
2655 card->info.mcl_level[3]);
2656
2657 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2658 break;
2659 }
2660 /* fallthrough */
2661 case QETH_CARD_TYPE_IQD:
2662 if ((card->info.guestlan) ||
2663 (card->info.mcl_level[0] & 0x80)) {
2664 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2665 card->info.mcl_level[0]];
2666 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2667 card->info.mcl_level[1]];
2668 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2669 card->info.mcl_level[2]];
2670 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2671 card->info.mcl_level[3]];
2672 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2673 }
2674 break;
2675 default:
2676 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2677 }
2678 if (card->info.portname_required)
2679 qeth_print_status_with_portname(card);
2680 else
2681 qeth_print_status_no_portname(card);
2682 }
2683 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2684
qeth_initialize_working_pool_list(struct qeth_card * card)2685 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2686 {
2687 struct qeth_buffer_pool_entry *entry;
2688
2689 QETH_CARD_TEXT(card, 5, "inwrklst");
2690
2691 list_for_each_entry(entry,
2692 &card->qdio.init_pool.entry_list, init_list) {
2693 qeth_put_buffer_pool_entry(card, entry);
2694 }
2695 }
2696
qeth_find_free_buffer_pool_entry(struct qeth_card * card)2697 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2698 struct qeth_card *card)
2699 {
2700 struct list_head *plh;
2701 struct qeth_buffer_pool_entry *entry;
2702 int i, free;
2703 struct page *page;
2704
2705 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2706 return NULL;
2707
2708 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2709 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2710 free = 1;
2711 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2712 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2713 free = 0;
2714 break;
2715 }
2716 }
2717 if (free) {
2718 list_del_init(&entry->list);
2719 return entry;
2720 }
2721 }
2722
2723 /* no free buffer in pool so take first one and swap pages */
2724 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2725 struct qeth_buffer_pool_entry, list);
2726 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2727 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2728 page = alloc_page(GFP_ATOMIC);
2729 if (!page) {
2730 return NULL;
2731 } else {
2732 free_page((unsigned long)entry->elements[i]);
2733 entry->elements[i] = page_address(page);
2734 if (card->options.performance_stats)
2735 card->perf_stats.sg_alloc_page_rx++;
2736 }
2737 }
2738 }
2739 list_del_init(&entry->list);
2740 return entry;
2741 }
2742
qeth_init_input_buffer(struct qeth_card * card,struct qeth_qdio_buffer * buf)2743 static int qeth_init_input_buffer(struct qeth_card *card,
2744 struct qeth_qdio_buffer *buf)
2745 {
2746 struct qeth_buffer_pool_entry *pool_entry;
2747 int i;
2748
2749 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2750 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2751 if (!buf->rx_skb)
2752 return 1;
2753 }
2754
2755 pool_entry = qeth_find_free_buffer_pool_entry(card);
2756 if (!pool_entry)
2757 return 1;
2758
2759 /*
2760 * since the buffer is accessed only from the input_tasklet
2761 * there shouldn't be a need to synchronize; also, since we use
2762 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2763 * buffers
2764 */
2765
2766 buf->pool_entry = pool_entry;
2767 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2768 buf->buffer->element[i].length = PAGE_SIZE;
2769 buf->buffer->element[i].addr = pool_entry->elements[i];
2770 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2771 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2772 else
2773 buf->buffer->element[i].eflags = 0;
2774 buf->buffer->element[i].sflags = 0;
2775 }
2776 return 0;
2777 }
2778
qeth_init_qdio_queues(struct qeth_card * card)2779 int qeth_init_qdio_queues(struct qeth_card *card)
2780 {
2781 int i, j;
2782 int rc;
2783
2784 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2785
2786 /* inbound queue */
2787 memset(card->qdio.in_q->qdio_bufs, 0,
2788 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2789 qeth_initialize_working_pool_list(card);
2790 /*give only as many buffers to hardware as we have buffer pool entries*/
2791 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2792 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2793 card->qdio.in_q->next_buf_to_init =
2794 card->qdio.in_buf_pool.buf_count - 1;
2795 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2796 card->qdio.in_buf_pool.buf_count - 1);
2797 if (rc) {
2798 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2799 return rc;
2800 }
2801
2802 /* completion */
2803 rc = qeth_cq_init(card);
2804 if (rc) {
2805 return rc;
2806 }
2807
2808 /* outbound queue */
2809 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2810 memset(card->qdio.out_qs[i]->qdio_bufs, 0,
2811 QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
2812 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2813 qeth_clear_output_buffer(card->qdio.out_qs[i],
2814 card->qdio.out_qs[i]->bufs[j],
2815 QETH_QDIO_BUF_EMPTY);
2816 }
2817 card->qdio.out_qs[i]->card = card;
2818 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2819 card->qdio.out_qs[i]->do_pack = 0;
2820 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2821 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2822 atomic_set(&card->qdio.out_qs[i]->state,
2823 QETH_OUT_Q_UNLOCKED);
2824 }
2825 return 0;
2826 }
2827 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2828
qeth_get_ipa_adp_type(enum qeth_link_types link_type)2829 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2830 {
2831 switch (link_type) {
2832 case QETH_LINK_TYPE_HSTR:
2833 return 2;
2834 default:
2835 return 1;
2836 }
2837 }
2838
qeth_fill_ipacmd_header(struct qeth_card * card,struct qeth_ipa_cmd * cmd,__u8 command,enum qeth_prot_versions prot)2839 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2840 struct qeth_ipa_cmd *cmd, __u8 command,
2841 enum qeth_prot_versions prot)
2842 {
2843 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2844 cmd->hdr.command = command;
2845 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2846 cmd->hdr.seqno = card->seqno.ipa;
2847 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2848 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2849 if (card->options.layer2)
2850 cmd->hdr.prim_version_no = 2;
2851 else
2852 cmd->hdr.prim_version_no = 1;
2853 cmd->hdr.param_count = 1;
2854 cmd->hdr.prot_version = prot;
2855 cmd->hdr.ipa_supported = 0;
2856 cmd->hdr.ipa_enabled = 0;
2857 }
2858
qeth_get_ipacmd_buffer(struct qeth_card * card,enum qeth_ipa_cmds ipacmd,enum qeth_prot_versions prot)2859 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2860 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2861 {
2862 struct qeth_cmd_buffer *iob;
2863 struct qeth_ipa_cmd *cmd;
2864
2865 iob = qeth_wait_for_buffer(&card->write);
2866 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2867 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2868
2869 return iob;
2870 }
2871 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2872
qeth_prepare_ipa_cmd(struct qeth_card * card,struct qeth_cmd_buffer * iob,char prot_type)2873 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2874 char prot_type)
2875 {
2876 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2877 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2878 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2879 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2880 }
2881 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2882
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)2883 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2884 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2885 unsigned long),
2886 void *reply_param)
2887 {
2888 int rc;
2889 char prot_type;
2890
2891 QETH_CARD_TEXT(card, 4, "sendipa");
2892
2893 if (card->options.layer2)
2894 if (card->info.type == QETH_CARD_TYPE_OSN)
2895 prot_type = QETH_PROT_OSN2;
2896 else
2897 prot_type = QETH_PROT_LAYER2;
2898 else
2899 prot_type = QETH_PROT_TCPIP;
2900 qeth_prepare_ipa_cmd(card, iob, prot_type);
2901 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2902 iob, reply_cb, reply_param);
2903 if (rc == -ETIME) {
2904 qeth_clear_ipacmd_list(card);
2905 qeth_schedule_recovery(card);
2906 }
2907 return rc;
2908 }
2909 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2910
qeth_send_startlan(struct qeth_card * card)2911 int qeth_send_startlan(struct qeth_card *card)
2912 {
2913 int rc;
2914 struct qeth_cmd_buffer *iob;
2915
2916 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2917
2918 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2919 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2920 return rc;
2921 }
2922 EXPORT_SYMBOL_GPL(qeth_send_startlan);
2923
qeth_default_setadapterparms_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2924 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2925 struct qeth_reply *reply, unsigned long data)
2926 {
2927 struct qeth_ipa_cmd *cmd;
2928
2929 QETH_CARD_TEXT(card, 4, "defadpcb");
2930
2931 cmd = (struct qeth_ipa_cmd *) data;
2932 if (cmd->hdr.return_code == 0)
2933 cmd->hdr.return_code =
2934 cmd->data.setadapterparms.hdr.return_code;
2935 return 0;
2936 }
2937
qeth_query_setadapterparms_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2938 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2939 struct qeth_reply *reply, unsigned long data)
2940 {
2941 struct qeth_ipa_cmd *cmd;
2942
2943 QETH_CARD_TEXT(card, 3, "quyadpcb");
2944
2945 cmd = (struct qeth_ipa_cmd *) data;
2946 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2947 card->info.link_type =
2948 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2949 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
2950 }
2951 card->options.adp.supported_funcs =
2952 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2953 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
2954 }
2955
qeth_get_adapter_cmd(struct qeth_card * card,__u32 command,__u32 cmdlen)2956 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2957 __u32 command, __u32 cmdlen)
2958 {
2959 struct qeth_cmd_buffer *iob;
2960 struct qeth_ipa_cmd *cmd;
2961
2962 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
2963 QETH_PROT_IPV4);
2964 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2965 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
2966 cmd->data.setadapterparms.hdr.command_code = command;
2967 cmd->data.setadapterparms.hdr.used_total = 1;
2968 cmd->data.setadapterparms.hdr.seq_no = 1;
2969
2970 return iob;
2971 }
2972
qeth_query_setadapterparms(struct qeth_card * card)2973 int qeth_query_setadapterparms(struct qeth_card *card)
2974 {
2975 int rc;
2976 struct qeth_cmd_buffer *iob;
2977
2978 QETH_CARD_TEXT(card, 3, "queryadp");
2979 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2980 sizeof(struct qeth_ipacmd_setadpparms));
2981 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2982 return rc;
2983 }
2984 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
2985
qeth_query_ipassists_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)2986 static int qeth_query_ipassists_cb(struct qeth_card *card,
2987 struct qeth_reply *reply, unsigned long data)
2988 {
2989 struct qeth_ipa_cmd *cmd;
2990
2991 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
2992
2993 cmd = (struct qeth_ipa_cmd *) data;
2994
2995 switch (cmd->hdr.return_code) {
2996 case IPA_RC_NOTSUPP:
2997 case IPA_RC_L2_UNSUPPORTED_CMD:
2998 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
2999 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3000 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3001 return -0;
3002 default:
3003 if (cmd->hdr.return_code) {
3004 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3005 "rc=%d\n",
3006 dev_name(&card->gdev->dev),
3007 cmd->hdr.return_code);
3008 return 0;
3009 }
3010 }
3011
3012 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3013 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3014 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3015 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3016 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3017 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3018 } else
3019 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3020 "\n", dev_name(&card->gdev->dev));
3021 return 0;
3022 }
3023
qeth_query_ipassists(struct qeth_card * card,enum qeth_prot_versions prot)3024 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3025 {
3026 int rc;
3027 struct qeth_cmd_buffer *iob;
3028
3029 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3030 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3031 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3032 return rc;
3033 }
3034 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3035
qeth_query_setdiagass_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3036 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3037 struct qeth_reply *reply, unsigned long data)
3038 {
3039 struct qeth_ipa_cmd *cmd;
3040 __u16 rc;
3041
3042 cmd = (struct qeth_ipa_cmd *)data;
3043 rc = cmd->hdr.return_code;
3044 if (rc)
3045 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3046 else
3047 card->info.diagass_support = cmd->data.diagass.ext;
3048 return 0;
3049 }
3050
qeth_query_setdiagass(struct qeth_card * card)3051 static int qeth_query_setdiagass(struct qeth_card *card)
3052 {
3053 struct qeth_cmd_buffer *iob;
3054 struct qeth_ipa_cmd *cmd;
3055
3056 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3057 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3058 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3059 cmd->data.diagass.subcmd_len = 16;
3060 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3061 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3062 }
3063
qeth_get_trap_id(struct qeth_card * card,struct qeth_trap_id * tid)3064 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3065 {
3066 unsigned long info = get_zeroed_page(GFP_KERNEL);
3067 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3068 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3069 struct ccw_dev_id ccwid;
3070 int level;
3071
3072 tid->chpid = card->info.chpid;
3073 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3074 tid->ssid = ccwid.ssid;
3075 tid->devno = ccwid.devno;
3076 if (!info)
3077 return;
3078 level = stsi(NULL, 0, 0, 0);
3079 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3080 tid->lparnr = info222->lpar_number;
3081 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3082 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3083 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3084 }
3085 free_page(info);
3086 return;
3087 }
3088
qeth_hw_trap_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)3089 static int qeth_hw_trap_cb(struct qeth_card *card,
3090 struct qeth_reply *reply, unsigned long data)
3091 {
3092 struct qeth_ipa_cmd *cmd;
3093 __u16 rc;
3094
3095 cmd = (struct qeth_ipa_cmd *)data;
3096 rc = cmd->hdr.return_code;
3097 if (rc)
3098 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3099 return 0;
3100 }
3101
qeth_hw_trap(struct qeth_card * card,enum qeth_diags_trap_action action)3102 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3103 {
3104 struct qeth_cmd_buffer *iob;
3105 struct qeth_ipa_cmd *cmd;
3106
3107 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3108 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3109 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3110 cmd->data.diagass.subcmd_len = 80;
3111 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3112 cmd->data.diagass.type = 1;
3113 cmd->data.diagass.action = action;
3114 switch (action) {
3115 case QETH_DIAGS_TRAP_ARM:
3116 cmd->data.diagass.options = 0x0003;
3117 cmd->data.diagass.ext = 0x00010000 +
3118 sizeof(struct qeth_trap_id);
3119 qeth_get_trap_id(card,
3120 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3121 break;
3122 case QETH_DIAGS_TRAP_DISARM:
3123 cmd->data.diagass.options = 0x0001;
3124 break;
3125 case QETH_DIAGS_TRAP_CAPTURE:
3126 break;
3127 }
3128 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3129 }
3130 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3131
qeth_check_qdio_errors(struct qeth_card * card,struct qdio_buffer * buf,unsigned int qdio_error,const char * dbftext)3132 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3133 unsigned int qdio_error, const char *dbftext)
3134 {
3135 if (qdio_error) {
3136 QETH_CARD_TEXT(card, 2, dbftext);
3137 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3138 buf->element[15].sflags);
3139 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3140 buf->element[14].sflags);
3141 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3142 if ((buf->element[15].sflags) == 0x12) {
3143 card->stats.rx_dropped++;
3144 return 0;
3145 } else
3146 return 1;
3147 }
3148 return 0;
3149 }
3150 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3151
qeth_buffer_reclaim_work(struct work_struct * work)3152 void qeth_buffer_reclaim_work(struct work_struct *work)
3153 {
3154 struct qeth_card *card = container_of(work, struct qeth_card,
3155 buffer_reclaim_work.work);
3156
3157 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3158 qeth_queue_input_buffer(card, card->reclaim_index);
3159 }
3160
qeth_queue_input_buffer(struct qeth_card * card,int index)3161 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3162 {
3163 struct qeth_qdio_q *queue = card->qdio.in_q;
3164 struct list_head *lh;
3165 int count;
3166 int i;
3167 int rc;
3168 int newcount = 0;
3169
3170 count = (index < queue->next_buf_to_init)?
3171 card->qdio.in_buf_pool.buf_count -
3172 (queue->next_buf_to_init - index) :
3173 card->qdio.in_buf_pool.buf_count -
3174 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3175 /* only requeue at a certain threshold to avoid SIGAs */
3176 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3177 for (i = queue->next_buf_to_init;
3178 i < queue->next_buf_to_init + count; ++i) {
3179 if (qeth_init_input_buffer(card,
3180 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3181 break;
3182 } else {
3183 newcount++;
3184 }
3185 }
3186
3187 if (newcount < count) {
3188 /* we are in memory shortage so we switch back to
3189 traditional skb allocation and drop packages */
3190 atomic_set(&card->force_alloc_skb, 3);
3191 count = newcount;
3192 } else {
3193 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3194 }
3195
3196 if (!count) {
3197 i = 0;
3198 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3199 i++;
3200 if (i == card->qdio.in_buf_pool.buf_count) {
3201 QETH_CARD_TEXT(card, 2, "qsarbw");
3202 card->reclaim_index = index;
3203 schedule_delayed_work(
3204 &card->buffer_reclaim_work,
3205 QETH_RECLAIM_WORK_TIME);
3206 }
3207 return;
3208 }
3209
3210 /*
3211 * according to old code it should be avoided to requeue all
3212 * 128 buffers in order to benefit from PCI avoidance.
3213 * this function keeps at least one buffer (the buffer at
3214 * 'index') un-requeued -> this buffer is the first buffer that
3215 * will be requeued the next time
3216 */
3217 if (card->options.performance_stats) {
3218 card->perf_stats.inbound_do_qdio_cnt++;
3219 card->perf_stats.inbound_do_qdio_start_time =
3220 qeth_get_micros();
3221 }
3222 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3223 queue->next_buf_to_init, count);
3224 if (card->options.performance_stats)
3225 card->perf_stats.inbound_do_qdio_time +=
3226 qeth_get_micros() -
3227 card->perf_stats.inbound_do_qdio_start_time;
3228 if (rc) {
3229 QETH_CARD_TEXT(card, 2, "qinberr");
3230 }
3231 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3232 QDIO_MAX_BUFFERS_PER_Q;
3233 }
3234 }
3235 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3236
qeth_handle_send_error(struct qeth_card * card,struct qeth_qdio_out_buffer * buffer,unsigned int qdio_err)3237 static int qeth_handle_send_error(struct qeth_card *card,
3238 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3239 {
3240 int sbalf15 = buffer->buffer->element[15].sflags;
3241
3242 QETH_CARD_TEXT(card, 6, "hdsnderr");
3243 if (card->info.type == QETH_CARD_TYPE_IQD) {
3244 if (sbalf15 == 0) {
3245 qdio_err = 0;
3246 } else {
3247 qdio_err = 1;
3248 }
3249 }
3250 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3251
3252 if (!qdio_err)
3253 return QETH_SEND_ERROR_NONE;
3254
3255 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3256 return QETH_SEND_ERROR_RETRY;
3257
3258 QETH_CARD_TEXT(card, 1, "lnkfail");
3259 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3260 (u16)qdio_err, (u8)sbalf15);
3261 return QETH_SEND_ERROR_LINK_FAILURE;
3262 }
3263
3264 /*
3265 * Switched to packing state if the number of used buffers on a queue
3266 * reaches a certain limit.
3267 */
qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q * queue)3268 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3269 {
3270 if (!queue->do_pack) {
3271 if (atomic_read(&queue->used_buffers)
3272 >= QETH_HIGH_WATERMARK_PACK){
3273 /* switch non-PACKING -> PACKING */
3274 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3275 if (queue->card->options.performance_stats)
3276 queue->card->perf_stats.sc_dp_p++;
3277 queue->do_pack = 1;
3278 }
3279 }
3280 }
3281
3282 /*
3283 * Switches from packing to non-packing mode. If there is a packing
3284 * buffer on the queue this buffer will be prepared to be flushed.
3285 * In that case 1 is returned to inform the caller. If no buffer
3286 * has to be flushed, zero is returned.
3287 */
qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q * queue)3288 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3289 {
3290 struct qeth_qdio_out_buffer *buffer;
3291 int flush_count = 0;
3292
3293 if (queue->do_pack) {
3294 if (atomic_read(&queue->used_buffers)
3295 <= QETH_LOW_WATERMARK_PACK) {
3296 /* switch PACKING -> non-PACKING */
3297 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3298 if (queue->card->options.performance_stats)
3299 queue->card->perf_stats.sc_p_dp++;
3300 queue->do_pack = 0;
3301 /* flush packing buffers */
3302 buffer = queue->bufs[queue->next_buf_to_fill];
3303 if ((atomic_read(&buffer->state) ==
3304 QETH_QDIO_BUF_EMPTY) &&
3305 (buffer->next_element_to_fill > 0)) {
3306 atomic_set(&buffer->state,
3307 QETH_QDIO_BUF_PRIMED);
3308 flush_count++;
3309 queue->next_buf_to_fill =
3310 (queue->next_buf_to_fill + 1) %
3311 QDIO_MAX_BUFFERS_PER_Q;
3312 }
3313 }
3314 }
3315 return flush_count;
3316 }
3317
3318
3319 /*
3320 * Called to flush a packing buffer if no more pci flags are on the queue.
3321 * Checks if there is a packing buffer and prepares it to be flushed.
3322 * In that case returns 1, otherwise zero.
3323 */
qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q * queue)3324 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3325 {
3326 struct qeth_qdio_out_buffer *buffer;
3327
3328 buffer = queue->bufs[queue->next_buf_to_fill];
3329 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3330 (buffer->next_element_to_fill > 0)) {
3331 /* it's a packing buffer */
3332 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3333 queue->next_buf_to_fill =
3334 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3335 return 1;
3336 }
3337 return 0;
3338 }
3339
qeth_flush_buffers(struct qeth_qdio_out_q * queue,int index,int count)3340 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3341 int count)
3342 {
3343 struct qeth_qdio_out_buffer *buf;
3344 int rc;
3345 int i;
3346 unsigned int qdio_flags;
3347
3348 for (i = index; i < index + count; ++i) {
3349 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3350 buf = queue->bufs[bidx];
3351 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3352 SBAL_EFLAGS_LAST_ENTRY;
3353
3354 if (queue->bufstates)
3355 queue->bufstates[bidx].user = buf;
3356
3357 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3358 continue;
3359
3360 if (!queue->do_pack) {
3361 if ((atomic_read(&queue->used_buffers) >=
3362 (QETH_HIGH_WATERMARK_PACK -
3363 QETH_WATERMARK_PACK_FUZZ)) &&
3364 !atomic_read(&queue->set_pci_flags_count)) {
3365 /* it's likely that we'll go to packing
3366 * mode soon */
3367 atomic_inc(&queue->set_pci_flags_count);
3368 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3369 }
3370 } else {
3371 if (!atomic_read(&queue->set_pci_flags_count)) {
3372 /*
3373 * there's no outstanding PCI any more, so we
3374 * have to request a PCI to be sure the the PCI
3375 * will wake at some time in the future then we
3376 * can flush packed buffers that might still be
3377 * hanging around, which can happen if no
3378 * further send was requested by the stack
3379 */
3380 atomic_inc(&queue->set_pci_flags_count);
3381 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3382 }
3383 }
3384 }
3385
3386 queue->card->dev->trans_start = jiffies;
3387 if (queue->card->options.performance_stats) {
3388 queue->card->perf_stats.outbound_do_qdio_cnt++;
3389 queue->card->perf_stats.outbound_do_qdio_start_time =
3390 qeth_get_micros();
3391 }
3392 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3393 if (atomic_read(&queue->set_pci_flags_count))
3394 qdio_flags |= QDIO_FLAG_PCI_OUT;
3395 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3396 queue->queue_no, index, count);
3397 if (queue->card->options.performance_stats)
3398 queue->card->perf_stats.outbound_do_qdio_time +=
3399 qeth_get_micros() -
3400 queue->card->perf_stats.outbound_do_qdio_start_time;
3401 atomic_add(count, &queue->used_buffers);
3402 if (rc) {
3403 queue->card->stats.tx_errors += count;
3404 /* ignore temporary SIGA errors without busy condition */
3405 if (rc == -ENOBUFS)
3406 return;
3407 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3408 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3409 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3410 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3411 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3412
3413 /* this must not happen under normal circumstances. if it
3414 * happens something is really wrong -> recover */
3415 qeth_schedule_recovery(queue->card);
3416 return;
3417 }
3418 if (queue->card->options.performance_stats)
3419 queue->card->perf_stats.bufs_sent += count;
3420 }
3421
qeth_check_outbound_queue(struct qeth_qdio_out_q * queue)3422 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3423 {
3424 int index;
3425 int flush_cnt = 0;
3426 int q_was_packing = 0;
3427
3428 /*
3429 * check if weed have to switch to non-packing mode or if
3430 * we have to get a pci flag out on the queue
3431 */
3432 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3433 !atomic_read(&queue->set_pci_flags_count)) {
3434 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3435 QETH_OUT_Q_UNLOCKED) {
3436 /*
3437 * If we get in here, there was no action in
3438 * do_send_packet. So, we check if there is a
3439 * packing buffer to be flushed here.
3440 */
3441 netif_stop_queue(queue->card->dev);
3442 index = queue->next_buf_to_fill;
3443 q_was_packing = queue->do_pack;
3444 /* queue->do_pack may change */
3445 barrier();
3446 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3447 if (!flush_cnt &&
3448 !atomic_read(&queue->set_pci_flags_count))
3449 flush_cnt +=
3450 qeth_flush_buffers_on_no_pci(queue);
3451 if (queue->card->options.performance_stats &&
3452 q_was_packing)
3453 queue->card->perf_stats.bufs_sent_pack +=
3454 flush_cnt;
3455 if (flush_cnt)
3456 qeth_flush_buffers(queue, index, flush_cnt);
3457 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3458 }
3459 }
3460 }
3461
qeth_qdio_start_poll(struct ccw_device * ccwdev,int queue,unsigned long card_ptr)3462 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3463 unsigned long card_ptr)
3464 {
3465 struct qeth_card *card = (struct qeth_card *)card_ptr;
3466
3467 if (card->dev && (card->dev->flags & IFF_UP))
3468 napi_schedule(&card->napi);
3469 }
3470 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3471
qeth_configure_cq(struct qeth_card * card,enum qeth_cq cq)3472 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3473 {
3474 int rc;
3475
3476 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3477 rc = -1;
3478 goto out;
3479 } else {
3480 if (card->options.cq == cq) {
3481 rc = 0;
3482 goto out;
3483 }
3484
3485 if (card->state != CARD_STATE_DOWN &&
3486 card->state != CARD_STATE_RECOVER) {
3487 rc = -1;
3488 goto out;
3489 }
3490
3491 qeth_free_qdio_buffers(card);
3492 card->options.cq = cq;
3493 rc = 0;
3494 }
3495 out:
3496 return rc;
3497
3498 }
3499 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3500
3501
qeth_qdio_cq_handler(struct qeth_card * card,unsigned int qdio_err,unsigned int queue,int first_element,int count)3502 static void qeth_qdio_cq_handler(struct qeth_card *card,
3503 unsigned int qdio_err,
3504 unsigned int queue, int first_element, int count) {
3505 struct qeth_qdio_q *cq = card->qdio.c_q;
3506 int i;
3507 int rc;
3508
3509 if (!qeth_is_cq(card, queue))
3510 goto out;
3511
3512 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3513 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3514 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3515
3516 if (qdio_err) {
3517 netif_stop_queue(card->dev);
3518 qeth_schedule_recovery(card);
3519 goto out;
3520 }
3521
3522 if (card->options.performance_stats) {
3523 card->perf_stats.cq_cnt++;
3524 card->perf_stats.cq_start_time = qeth_get_micros();
3525 }
3526
3527 for (i = first_element; i < first_element + count; ++i) {
3528 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3529 struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
3530 int e;
3531
3532 e = 0;
3533 while (buffer->element[e].addr) {
3534 unsigned long phys_aob_addr;
3535
3536 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3537 qeth_qdio_handle_aob(card, phys_aob_addr);
3538 buffer->element[e].addr = NULL;
3539 buffer->element[e].eflags = 0;
3540 buffer->element[e].sflags = 0;
3541 buffer->element[e].length = 0;
3542
3543 ++e;
3544 }
3545
3546 buffer->element[15].eflags = 0;
3547 buffer->element[15].sflags = 0;
3548 }
3549 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3550 card->qdio.c_q->next_buf_to_init,
3551 count);
3552 if (rc) {
3553 dev_warn(&card->gdev->dev,
3554 "QDIO reported an error, rc=%i\n", rc);
3555 QETH_CARD_TEXT(card, 2, "qcqherr");
3556 }
3557 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3558 + count) % QDIO_MAX_BUFFERS_PER_Q;
3559
3560 netif_wake_queue(card->dev);
3561
3562 if (card->options.performance_stats) {
3563 int delta_t = qeth_get_micros();
3564 delta_t -= card->perf_stats.cq_start_time;
3565 card->perf_stats.cq_time += delta_t;
3566 }
3567 out:
3568 return;
3569 }
3570
qeth_qdio_input_handler(struct ccw_device * ccwdev,unsigned int qdio_err,unsigned int queue,int first_elem,int count,unsigned long card_ptr)3571 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3572 unsigned int queue, int first_elem, int count,
3573 unsigned long card_ptr)
3574 {
3575 struct qeth_card *card = (struct qeth_card *)card_ptr;
3576
3577 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3578 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3579
3580 if (qeth_is_cq(card, queue))
3581 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3582 else if (qdio_err)
3583 qeth_schedule_recovery(card);
3584
3585
3586 }
3587 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3588
qeth_qdio_output_handler(struct ccw_device * ccwdev,unsigned int qdio_error,int __queue,int first_element,int count,unsigned long card_ptr)3589 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3590 unsigned int qdio_error, int __queue, int first_element,
3591 int count, unsigned long card_ptr)
3592 {
3593 struct qeth_card *card = (struct qeth_card *) card_ptr;
3594 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3595 struct qeth_qdio_out_buffer *buffer;
3596 int i;
3597
3598 QETH_CARD_TEXT(card, 6, "qdouhdl");
3599 if (qdio_error & QDIO_ERROR_FATAL) {
3600 QETH_CARD_TEXT(card, 2, "achkcond");
3601 netif_stop_queue(card->dev);
3602 qeth_schedule_recovery(card);
3603 return;
3604 }
3605 if (card->options.performance_stats) {
3606 card->perf_stats.outbound_handler_cnt++;
3607 card->perf_stats.outbound_handler_start_time =
3608 qeth_get_micros();
3609 }
3610 for (i = first_element; i < (first_element + count); ++i) {
3611 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3612 buffer = queue->bufs[bidx];
3613 qeth_handle_send_error(card, buffer, qdio_error);
3614
3615 if (queue->bufstates &&
3616 (queue->bufstates[bidx].flags &
3617 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3618 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3619
3620 if (atomic_cmpxchg(&buffer->state,
3621 QETH_QDIO_BUF_PRIMED,
3622 QETH_QDIO_BUF_PENDING) ==
3623 QETH_QDIO_BUF_PRIMED) {
3624 qeth_notify_skbs(queue, buffer,
3625 TX_NOTIFY_PENDING);
3626 }
3627 buffer->aob = queue->bufstates[bidx].aob;
3628 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3629 QETH_CARD_TEXT(queue->card, 5, "aob");
3630 QETH_CARD_TEXT_(queue->card, 5, "%lx",
3631 virt_to_phys(buffer->aob));
3632 if (qeth_init_qdio_out_buf(queue, bidx)) {
3633 QETH_CARD_TEXT(card, 2, "outofbuf");
3634 qeth_schedule_recovery(card);
3635 }
3636 } else {
3637 if (card->options.cq == QETH_CQ_ENABLED) {
3638 enum iucv_tx_notify n;
3639
3640 n = qeth_compute_cq_notification(
3641 buffer->buffer->element[15].sflags, 0);
3642 qeth_notify_skbs(queue, buffer, n);
3643 }
3644
3645 qeth_clear_output_buffer(queue, buffer,
3646 QETH_QDIO_BUF_EMPTY);
3647 }
3648 qeth_cleanup_handled_pending(queue, bidx, 0);
3649 }
3650 atomic_sub(count, &queue->used_buffers);
3651 /* check if we need to do something on this outbound queue */
3652 if (card->info.type != QETH_CARD_TYPE_IQD)
3653 qeth_check_outbound_queue(queue);
3654
3655 netif_wake_queue(queue->card->dev);
3656 if (card->options.performance_stats)
3657 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3658 card->perf_stats.outbound_handler_start_time;
3659 }
3660 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3661
qeth_get_priority_queue(struct qeth_card * card,struct sk_buff * skb,int ipv,int cast_type)3662 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3663 int ipv, int cast_type)
3664 {
3665 if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
3666 card->info.type == QETH_CARD_TYPE_OSX))
3667 return card->qdio.default_out_queue;
3668 switch (card->qdio.no_out_queues) {
3669 case 4:
3670 if (cast_type && card->info.is_multicast_different)
3671 return card->info.is_multicast_different &
3672 (card->qdio.no_out_queues - 1);
3673 if (card->qdio.do_prio_queueing && (ipv == 4)) {
3674 const u8 tos = ip_hdr(skb)->tos;
3675
3676 if (card->qdio.do_prio_queueing ==
3677 QETH_PRIO_Q_ING_TOS) {
3678 if (tos & IP_TOS_NOTIMPORTANT)
3679 return 3;
3680 if (tos & IP_TOS_HIGHRELIABILITY)
3681 return 2;
3682 if (tos & IP_TOS_HIGHTHROUGHPUT)
3683 return 1;
3684 if (tos & IP_TOS_LOWDELAY)
3685 return 0;
3686 }
3687 if (card->qdio.do_prio_queueing ==
3688 QETH_PRIO_Q_ING_PREC)
3689 return 3 - (tos >> 6);
3690 } else if (card->qdio.do_prio_queueing && (ipv == 6)) {
3691 /* TODO: IPv6!!! */
3692 }
3693 return card->qdio.default_out_queue;
3694 case 1: /* fallthrough for single-out-queue 1920-device */
3695 default:
3696 return card->qdio.default_out_queue;
3697 }
3698 }
3699 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3700
qeth_get_elements_for_frags(struct sk_buff * skb)3701 int qeth_get_elements_for_frags(struct sk_buff *skb)
3702 {
3703 int cnt, length, e, elements = 0;
3704 struct skb_frag_struct *frag;
3705 char *data;
3706
3707 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3708 frag = &skb_shinfo(skb)->frags[cnt];
3709 data = (char *)page_to_phys(skb_frag_page(frag)) +
3710 frag->page_offset;
3711 length = frag->size;
3712 e = PFN_UP((unsigned long)data + length - 1) -
3713 PFN_DOWN((unsigned long)data);
3714 elements += e;
3715 }
3716 return elements;
3717 }
3718 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3719
qeth_get_elements_no(struct qeth_card * card,struct sk_buff * skb,int elems)3720 int qeth_get_elements_no(struct qeth_card *card,
3721 struct sk_buff *skb, int elems)
3722 {
3723 int dlen = skb->len - skb->data_len;
3724 int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
3725 PFN_DOWN((unsigned long)skb->data);
3726
3727 elements_needed += qeth_get_elements_for_frags(skb);
3728
3729 if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3730 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3731 "(Number=%d / Length=%d). Discarded.\n",
3732 (elements_needed+elems), skb->len);
3733 return 0;
3734 }
3735 return elements_needed;
3736 }
3737 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3738
qeth_hdr_chk_and_bounce(struct sk_buff * skb,struct qeth_hdr ** hdr,int len)3739 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3740 {
3741 int hroom, inpage, rest;
3742
3743 if (((unsigned long)skb->data & PAGE_MASK) !=
3744 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3745 hroom = skb_headroom(skb);
3746 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3747 rest = len - inpage;
3748 if (rest > hroom)
3749 return 1;
3750 memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
3751 skb->data -= rest;
3752 skb->tail -= rest;
3753 *hdr = (struct qeth_hdr *)skb->data;
3754 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3755 }
3756 return 0;
3757 }
3758 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3759
__qeth_fill_buffer(struct sk_buff * skb,struct qdio_buffer * buffer,int is_tso,int * next_element_to_fill,int offset)3760 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3761 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3762 int offset)
3763 {
3764 int length = skb->len - skb->data_len;
3765 int length_here;
3766 int element;
3767 char *data;
3768 int first_lap, cnt;
3769 struct skb_frag_struct *frag;
3770
3771 element = *next_element_to_fill;
3772 data = skb->data;
3773 first_lap = (is_tso == 0 ? 1 : 0);
3774
3775 if (offset >= 0) {
3776 data = skb->data + offset;
3777 length -= offset;
3778 first_lap = 0;
3779 }
3780
3781 while (length > 0) {
3782 /* length_here is the remaining amount of data in this page */
3783 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3784 if (length < length_here)
3785 length_here = length;
3786
3787 buffer->element[element].addr = data;
3788 buffer->element[element].length = length_here;
3789 length -= length_here;
3790 if (!length) {
3791 if (first_lap)
3792 if (skb_shinfo(skb)->nr_frags)
3793 buffer->element[element].eflags =
3794 SBAL_EFLAGS_FIRST_FRAG;
3795 else
3796 buffer->element[element].eflags = 0;
3797 else
3798 buffer->element[element].eflags =
3799 SBAL_EFLAGS_MIDDLE_FRAG;
3800 } else {
3801 if (first_lap)
3802 buffer->element[element].eflags =
3803 SBAL_EFLAGS_FIRST_FRAG;
3804 else
3805 buffer->element[element].eflags =
3806 SBAL_EFLAGS_MIDDLE_FRAG;
3807 }
3808 data += length_here;
3809 element++;
3810 first_lap = 0;
3811 }
3812
3813 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3814 frag = &skb_shinfo(skb)->frags[cnt];
3815 data = (char *)page_to_phys(skb_frag_page(frag)) +
3816 frag->page_offset;
3817 length = frag->size;
3818 while (length > 0) {
3819 length_here = PAGE_SIZE -
3820 ((unsigned long) data % PAGE_SIZE);
3821 if (length < length_here)
3822 length_here = length;
3823
3824 buffer->element[element].addr = data;
3825 buffer->element[element].length = length_here;
3826 buffer->element[element].eflags =
3827 SBAL_EFLAGS_MIDDLE_FRAG;
3828 length -= length_here;
3829 data += length_here;
3830 element++;
3831 }
3832 }
3833
3834 if (buffer->element[element - 1].eflags)
3835 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3836 *next_element_to_fill = element;
3837 }
3838
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)3839 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3840 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3841 struct qeth_hdr *hdr, int offset, int hd_len)
3842 {
3843 struct qdio_buffer *buffer;
3844 int flush_cnt = 0, hdr_len, large_send = 0;
3845
3846 buffer = buf->buffer;
3847 atomic_inc(&skb->users);
3848 skb_queue_tail(&buf->skb_list, skb);
3849
3850 /*check first on TSO ....*/
3851 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3852 int element = buf->next_element_to_fill;
3853
3854 hdr_len = sizeof(struct qeth_hdr_tso) +
3855 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
3856 /*fill first buffer entry only with header information */
3857 buffer->element[element].addr = skb->data;
3858 buffer->element[element].length = hdr_len;
3859 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3860 buf->next_element_to_fill++;
3861 skb->data += hdr_len;
3862 skb->len -= hdr_len;
3863 large_send = 1;
3864 }
3865
3866 if (offset >= 0) {
3867 int element = buf->next_element_to_fill;
3868 buffer->element[element].addr = hdr;
3869 buffer->element[element].length = sizeof(struct qeth_hdr) +
3870 hd_len;
3871 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3872 buf->is_header[element] = 1;
3873 buf->next_element_to_fill++;
3874 }
3875
3876 __qeth_fill_buffer(skb, buffer, large_send,
3877 (int *)&buf->next_element_to_fill, offset);
3878
3879 if (!queue->do_pack) {
3880 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3881 /* set state to PRIMED -> will be flushed */
3882 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3883 flush_cnt = 1;
3884 } else {
3885 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3886 if (queue->card->options.performance_stats)
3887 queue->card->perf_stats.skbs_sent_pack++;
3888 if (buf->next_element_to_fill >=
3889 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
3890 /*
3891 * packed buffer if full -> set state PRIMED
3892 * -> will be flushed
3893 */
3894 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3895 flush_cnt = 1;
3896 }
3897 }
3898 return flush_cnt;
3899 }
3900
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)3901 int qeth_do_send_packet_fast(struct qeth_card *card,
3902 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
3903 struct qeth_hdr *hdr, int elements_needed,
3904 int offset, int hd_len)
3905 {
3906 struct qeth_qdio_out_buffer *buffer;
3907 int index;
3908
3909 /* spin until we get the queue ... */
3910 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3911 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3912 /* ... now we've got the queue */
3913 index = queue->next_buf_to_fill;
3914 buffer = queue->bufs[queue->next_buf_to_fill];
3915 /*
3916 * check if buffer is empty to make sure that we do not 'overtake'
3917 * ourselves and try to fill a buffer that is already primed
3918 */
3919 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3920 goto out;
3921 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3922 QDIO_MAX_BUFFERS_PER_Q;
3923 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3924 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
3925 qeth_flush_buffers(queue, index, 1);
3926 return 0;
3927 out:
3928 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3929 return -EBUSY;
3930 }
3931 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
3932
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)3933 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3934 struct sk_buff *skb, struct qeth_hdr *hdr,
3935 int elements_needed)
3936 {
3937 struct qeth_qdio_out_buffer *buffer;
3938 int start_index;
3939 int flush_count = 0;
3940 int do_pack = 0;
3941 int tmp;
3942 int rc = 0;
3943
3944 /* spin until we get the queue ... */
3945 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3946 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3947 start_index = queue->next_buf_to_fill;
3948 buffer = queue->bufs[queue->next_buf_to_fill];
3949 /*
3950 * check if buffer is empty to make sure that we do not 'overtake'
3951 * ourselves and try to fill a buffer that is already primed
3952 */
3953 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3954 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3955 return -EBUSY;
3956 }
3957 /* check if we need to switch packing state of this queue */
3958 qeth_switch_to_packing_if_needed(queue);
3959 if (queue->do_pack) {
3960 do_pack = 1;
3961 /* does packet fit in current buffer? */
3962 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
3963 buffer->next_element_to_fill) < elements_needed) {
3964 /* ... no -> set state PRIMED */
3965 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3966 flush_count++;
3967 queue->next_buf_to_fill =
3968 (queue->next_buf_to_fill + 1) %
3969 QDIO_MAX_BUFFERS_PER_Q;
3970 buffer = queue->bufs[queue->next_buf_to_fill];
3971 /* we did a step forward, so check buffer state
3972 * again */
3973 if (atomic_read(&buffer->state) !=
3974 QETH_QDIO_BUF_EMPTY) {
3975 qeth_flush_buffers(queue, start_index,
3976 flush_count);
3977 atomic_set(&queue->state,
3978 QETH_OUT_Q_UNLOCKED);
3979 return -EBUSY;
3980 }
3981 }
3982 }
3983 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
3984 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
3985 QDIO_MAX_BUFFERS_PER_Q;
3986 flush_count += tmp;
3987 if (flush_count)
3988 qeth_flush_buffers(queue, start_index, flush_count);
3989 else if (!atomic_read(&queue->set_pci_flags_count))
3990 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3991 /*
3992 * queue->state will go from LOCKED -> UNLOCKED or from
3993 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3994 * (switch packing state or flush buffer to get another pci flag out).
3995 * In that case we will enter this loop
3996 */
3997 while (atomic_dec_return(&queue->state)) {
3998 flush_count = 0;
3999 start_index = queue->next_buf_to_fill;
4000 /* check if we can go back to non-packing state */
4001 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4002 /*
4003 * check if we need to flush a packing buffer to get a pci
4004 * flag out on the queue
4005 */
4006 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4007 flush_count += qeth_flush_buffers_on_no_pci(queue);
4008 if (flush_count)
4009 qeth_flush_buffers(queue, start_index, flush_count);
4010 }
4011 /* at this point the queue is UNLOCKED again */
4012 if (queue->card->options.performance_stats && do_pack)
4013 queue->card->perf_stats.bufs_sent_pack += flush_count;
4014
4015 return rc;
4016 }
4017 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4018
qeth_setadp_promisc_mode_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4019 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4020 struct qeth_reply *reply, unsigned long data)
4021 {
4022 struct qeth_ipa_cmd *cmd;
4023 struct qeth_ipacmd_setadpparms *setparms;
4024
4025 QETH_CARD_TEXT(card, 4, "prmadpcb");
4026
4027 cmd = (struct qeth_ipa_cmd *) data;
4028 setparms = &(cmd->data.setadapterparms);
4029
4030 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4031 if (cmd->hdr.return_code) {
4032 QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
4033 setparms->data.mode = SET_PROMISC_MODE_OFF;
4034 }
4035 card->info.promisc_mode = setparms->data.mode;
4036 return 0;
4037 }
4038
qeth_setadp_promisc_mode(struct qeth_card * card)4039 void qeth_setadp_promisc_mode(struct qeth_card *card)
4040 {
4041 enum qeth_ipa_promisc_modes mode;
4042 struct net_device *dev = card->dev;
4043 struct qeth_cmd_buffer *iob;
4044 struct qeth_ipa_cmd *cmd;
4045
4046 QETH_CARD_TEXT(card, 4, "setprom");
4047
4048 if (((dev->flags & IFF_PROMISC) &&
4049 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4050 (!(dev->flags & IFF_PROMISC) &&
4051 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4052 return;
4053 mode = SET_PROMISC_MODE_OFF;
4054 if (dev->flags & IFF_PROMISC)
4055 mode = SET_PROMISC_MODE_ON;
4056 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4057
4058 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4059 sizeof(struct qeth_ipacmd_setadpparms));
4060 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4061 cmd->data.setadapterparms.data.mode = mode;
4062 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4063 }
4064 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4065
qeth_change_mtu(struct net_device * dev,int new_mtu)4066 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4067 {
4068 struct qeth_card *card;
4069 char dbf_text[15];
4070
4071 card = dev->ml_priv;
4072
4073 QETH_CARD_TEXT(card, 4, "chgmtu");
4074 sprintf(dbf_text, "%8x", new_mtu);
4075 QETH_CARD_TEXT(card, 4, dbf_text);
4076
4077 if (new_mtu < 64)
4078 return -EINVAL;
4079 if (new_mtu > 65535)
4080 return -EINVAL;
4081 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4082 (!qeth_mtu_is_valid(card, new_mtu)))
4083 return -EINVAL;
4084 dev->mtu = new_mtu;
4085 return 0;
4086 }
4087 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4088
qeth_get_stats(struct net_device * dev)4089 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4090 {
4091 struct qeth_card *card;
4092
4093 card = dev->ml_priv;
4094
4095 QETH_CARD_TEXT(card, 5, "getstat");
4096
4097 return &card->stats;
4098 }
4099 EXPORT_SYMBOL_GPL(qeth_get_stats);
4100
qeth_setadpparms_change_macaddr_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4101 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4102 struct qeth_reply *reply, unsigned long data)
4103 {
4104 struct qeth_ipa_cmd *cmd;
4105
4106 QETH_CARD_TEXT(card, 4, "chgmaccb");
4107
4108 cmd = (struct qeth_ipa_cmd *) data;
4109 if (!card->options.layer2 ||
4110 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4111 memcpy(card->dev->dev_addr,
4112 &cmd->data.setadapterparms.data.change_addr.addr,
4113 OSA_ADDR_LEN);
4114 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4115 }
4116 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4117 return 0;
4118 }
4119
qeth_setadpparms_change_macaddr(struct qeth_card * card)4120 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4121 {
4122 int rc;
4123 struct qeth_cmd_buffer *iob;
4124 struct qeth_ipa_cmd *cmd;
4125
4126 QETH_CARD_TEXT(card, 4, "chgmac");
4127
4128 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4129 sizeof(struct qeth_ipacmd_setadpparms));
4130 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4131 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4132 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4133 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4134 card->dev->dev_addr, OSA_ADDR_LEN);
4135 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4136 NULL);
4137 return rc;
4138 }
4139 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4140
qeth_setadpparms_set_access_ctrl_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4141 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4142 struct qeth_reply *reply, unsigned long data)
4143 {
4144 struct qeth_ipa_cmd *cmd;
4145 struct qeth_set_access_ctrl *access_ctrl_req;
4146 int fallback = *(int *)reply->param;
4147
4148 QETH_CARD_TEXT(card, 4, "setaccb");
4149
4150 cmd = (struct qeth_ipa_cmd *) data;
4151 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4152 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4153 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4154 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4155 cmd->data.setadapterparms.hdr.return_code);
4156 if (cmd->data.setadapterparms.hdr.return_code !=
4157 SET_ACCESS_CTRL_RC_SUCCESS)
4158 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4159 card->gdev->dev.kobj.name,
4160 access_ctrl_req->subcmd_code,
4161 cmd->data.setadapterparms.hdr.return_code);
4162 switch (cmd->data.setadapterparms.hdr.return_code) {
4163 case SET_ACCESS_CTRL_RC_SUCCESS:
4164 if (card->options.isolation == ISOLATION_MODE_NONE) {
4165 dev_info(&card->gdev->dev,
4166 "QDIO data connection isolation is deactivated\n");
4167 } else {
4168 dev_info(&card->gdev->dev,
4169 "QDIO data connection isolation is activated\n");
4170 }
4171 break;
4172 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4173 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4174 "deactivated\n", dev_name(&card->gdev->dev));
4175 if (fallback)
4176 card->options.isolation = card->options.prev_isolation;
4177 break;
4178 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4179 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4180 " activated\n", dev_name(&card->gdev->dev));
4181 if (fallback)
4182 card->options.isolation = card->options.prev_isolation;
4183 break;
4184 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4185 dev_err(&card->gdev->dev, "Adapter does not "
4186 "support QDIO data connection isolation\n");
4187 break;
4188 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4189 dev_err(&card->gdev->dev,
4190 "Adapter is dedicated. "
4191 "QDIO data connection isolation not supported\n");
4192 if (fallback)
4193 card->options.isolation = card->options.prev_isolation;
4194 break;
4195 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4196 dev_err(&card->gdev->dev,
4197 "TSO does not permit QDIO data connection isolation\n");
4198 if (fallback)
4199 card->options.isolation = card->options.prev_isolation;
4200 break;
4201 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4202 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4203 "support reflective relay mode\n");
4204 if (fallback)
4205 card->options.isolation = card->options.prev_isolation;
4206 break;
4207 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4208 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4209 "enabled at the adjacent switch port");
4210 if (fallback)
4211 card->options.isolation = card->options.prev_isolation;
4212 break;
4213 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4214 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4215 "at the adjacent switch failed\n");
4216 break;
4217 default:
4218 /* this should never happen */
4219 if (fallback)
4220 card->options.isolation = card->options.prev_isolation;
4221 break;
4222 }
4223 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4224 return 0;
4225 }
4226
qeth_setadpparms_set_access_ctrl(struct qeth_card * card,enum qeth_ipa_isolation_modes isolation,int fallback)4227 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4228 enum qeth_ipa_isolation_modes isolation, int fallback)
4229 {
4230 int rc;
4231 struct qeth_cmd_buffer *iob;
4232 struct qeth_ipa_cmd *cmd;
4233 struct qeth_set_access_ctrl *access_ctrl_req;
4234
4235 QETH_CARD_TEXT(card, 4, "setacctl");
4236
4237 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4238 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4239
4240 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4241 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4242 sizeof(struct qeth_set_access_ctrl));
4243 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4244 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4245 access_ctrl_req->subcmd_code = isolation;
4246
4247 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4248 &fallback);
4249 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4250 return rc;
4251 }
4252
qeth_set_access_ctrl_online(struct qeth_card * card,int fallback)4253 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4254 {
4255 int rc = 0;
4256
4257 QETH_CARD_TEXT(card, 4, "setactlo");
4258
4259 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4260 card->info.type == QETH_CARD_TYPE_OSX) &&
4261 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4262 rc = qeth_setadpparms_set_access_ctrl(card,
4263 card->options.isolation, fallback);
4264 if (rc) {
4265 QETH_DBF_MESSAGE(3,
4266 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4267 card->gdev->dev.kobj.name,
4268 rc);
4269 rc = -EOPNOTSUPP;
4270 }
4271 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4272 card->options.isolation = ISOLATION_MODE_NONE;
4273
4274 dev_err(&card->gdev->dev, "Adapter does not "
4275 "support QDIO data connection isolation\n");
4276 rc = -EOPNOTSUPP;
4277 }
4278 return rc;
4279 }
4280 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4281
qeth_tx_timeout(struct net_device * dev)4282 void qeth_tx_timeout(struct net_device *dev)
4283 {
4284 struct qeth_card *card;
4285
4286 card = dev->ml_priv;
4287 QETH_CARD_TEXT(card, 4, "txtimeo");
4288 card->stats.tx_errors++;
4289 qeth_schedule_recovery(card);
4290 }
4291 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4292
qeth_mdio_read(struct net_device * dev,int phy_id,int regnum)4293 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4294 {
4295 struct qeth_card *card = dev->ml_priv;
4296 int rc = 0;
4297
4298 switch (regnum) {
4299 case MII_BMCR: /* Basic mode control register */
4300 rc = BMCR_FULLDPLX;
4301 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4302 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4303 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4304 rc |= BMCR_SPEED100;
4305 break;
4306 case MII_BMSR: /* Basic mode status register */
4307 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4308 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4309 BMSR_100BASE4;
4310 break;
4311 case MII_PHYSID1: /* PHYS ID 1 */
4312 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4313 dev->dev_addr[2];
4314 rc = (rc >> 5) & 0xFFFF;
4315 break;
4316 case MII_PHYSID2: /* PHYS ID 2 */
4317 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4318 break;
4319 case MII_ADVERTISE: /* Advertisement control reg */
4320 rc = ADVERTISE_ALL;
4321 break;
4322 case MII_LPA: /* Link partner ability reg */
4323 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4324 LPA_100BASE4 | LPA_LPACK;
4325 break;
4326 case MII_EXPANSION: /* Expansion register */
4327 break;
4328 case MII_DCOUNTER: /* disconnect counter */
4329 break;
4330 case MII_FCSCOUNTER: /* false carrier counter */
4331 break;
4332 case MII_NWAYTEST: /* N-way auto-neg test register */
4333 break;
4334 case MII_RERRCOUNTER: /* rx error counter */
4335 rc = card->stats.rx_errors;
4336 break;
4337 case MII_SREVISION: /* silicon revision */
4338 break;
4339 case MII_RESV1: /* reserved 1 */
4340 break;
4341 case MII_LBRERROR: /* loopback, rx, bypass error */
4342 break;
4343 case MII_PHYADDR: /* physical address */
4344 break;
4345 case MII_RESV2: /* reserved 2 */
4346 break;
4347 case MII_TPISTATUS: /* TPI status for 10mbps */
4348 break;
4349 case MII_NCONFIG: /* network interface config */
4350 break;
4351 default:
4352 break;
4353 }
4354 return rc;
4355 }
4356 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4357
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)4358 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4359 struct qeth_cmd_buffer *iob, int len,
4360 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4361 unsigned long),
4362 void *reply_param)
4363 {
4364 u16 s1, s2;
4365
4366 QETH_CARD_TEXT(card, 4, "sendsnmp");
4367
4368 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4369 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4370 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4371 /* adjust PDU length fields in IPA_PDU_HEADER */
4372 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4373 s2 = (u32) len;
4374 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4375 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4376 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4377 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4378 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4379 reply_cb, reply_param);
4380 }
4381
qeth_snmp_command_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long sdata)4382 static int qeth_snmp_command_cb(struct qeth_card *card,
4383 struct qeth_reply *reply, unsigned long sdata)
4384 {
4385 struct qeth_ipa_cmd *cmd;
4386 struct qeth_arp_query_info *qinfo;
4387 struct qeth_snmp_cmd *snmp;
4388 unsigned char *data;
4389 __u16 data_len;
4390
4391 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4392
4393 cmd = (struct qeth_ipa_cmd *) sdata;
4394 data = (unsigned char *)((char *)cmd - reply->offset);
4395 qinfo = (struct qeth_arp_query_info *) reply->param;
4396 snmp = &cmd->data.setadapterparms.data.snmp;
4397
4398 if (cmd->hdr.return_code) {
4399 QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
4400 return 0;
4401 }
4402 if (cmd->data.setadapterparms.hdr.return_code) {
4403 cmd->hdr.return_code =
4404 cmd->data.setadapterparms.hdr.return_code;
4405 QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
4406 return 0;
4407 }
4408 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4409 if (cmd->data.setadapterparms.hdr.seq_no == 1)
4410 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4411 else
4412 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4413
4414 /* check if there is enough room in userspace */
4415 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4416 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4417 cmd->hdr.return_code = IPA_RC_ENOMEM;
4418 return 0;
4419 }
4420 QETH_CARD_TEXT_(card, 4, "snore%i",
4421 cmd->data.setadapterparms.hdr.used_total);
4422 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4423 cmd->data.setadapterparms.hdr.seq_no);
4424 /*copy entries to user buffer*/
4425 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4426 memcpy(qinfo->udata + qinfo->udata_offset,
4427 (char *)snmp,
4428 data_len + offsetof(struct qeth_snmp_cmd, data));
4429 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4430 } else {
4431 memcpy(qinfo->udata + qinfo->udata_offset,
4432 (char *)&snmp->request, data_len);
4433 }
4434 qinfo->udata_offset += data_len;
4435 /* check if all replies received ... */
4436 QETH_CARD_TEXT_(card, 4, "srtot%i",
4437 cmd->data.setadapterparms.hdr.used_total);
4438 QETH_CARD_TEXT_(card, 4, "srseq%i",
4439 cmd->data.setadapterparms.hdr.seq_no);
4440 if (cmd->data.setadapterparms.hdr.seq_no <
4441 cmd->data.setadapterparms.hdr.used_total)
4442 return 1;
4443 return 0;
4444 }
4445
qeth_snmp_command(struct qeth_card * card,char __user * udata)4446 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4447 {
4448 struct qeth_cmd_buffer *iob;
4449 struct qeth_ipa_cmd *cmd;
4450 struct qeth_snmp_ureq *ureq;
4451 int req_len;
4452 struct qeth_arp_query_info qinfo = {0, };
4453 int rc = 0;
4454
4455 QETH_CARD_TEXT(card, 3, "snmpcmd");
4456
4457 if (card->info.guestlan)
4458 return -EOPNOTSUPP;
4459
4460 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4461 (!card->options.layer2)) {
4462 return -EOPNOTSUPP;
4463 }
4464 /* skip 4 bytes (data_len struct member) to get req_len */
4465 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4466 return -EFAULT;
4467 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4468 if (IS_ERR(ureq)) {
4469 QETH_CARD_TEXT(card, 2, "snmpnome");
4470 return PTR_ERR(ureq);
4471 }
4472 qinfo.udata_len = ureq->hdr.data_len;
4473 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4474 if (!qinfo.udata) {
4475 kfree(ureq);
4476 return -ENOMEM;
4477 }
4478 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4479
4480 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4481 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4482 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4483 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4484 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4485 qeth_snmp_command_cb, (void *)&qinfo);
4486 if (rc)
4487 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4488 QETH_CARD_IFNAME(card), rc);
4489 else {
4490 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4491 rc = -EFAULT;
4492 }
4493
4494 kfree(ureq);
4495 kfree(qinfo.udata);
4496 return rc;
4497 }
4498 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4499
qeth_setadpparms_query_oat_cb(struct qeth_card * card,struct qeth_reply * reply,unsigned long data)4500 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4501 struct qeth_reply *reply, unsigned long data)
4502 {
4503 struct qeth_ipa_cmd *cmd;
4504 struct qeth_qoat_priv *priv;
4505 char *resdata;
4506 int resdatalen;
4507
4508 QETH_CARD_TEXT(card, 3, "qoatcb");
4509
4510 cmd = (struct qeth_ipa_cmd *)data;
4511 priv = (struct qeth_qoat_priv *)reply->param;
4512 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4513 resdata = (char *)data + 28;
4514
4515 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4516 cmd->hdr.return_code = IPA_RC_FFFF;
4517 return 0;
4518 }
4519
4520 memcpy((priv->buffer + priv->response_len), resdata,
4521 resdatalen);
4522 priv->response_len += resdatalen;
4523
4524 if (cmd->data.setadapterparms.hdr.seq_no <
4525 cmd->data.setadapterparms.hdr.used_total)
4526 return 1;
4527 return 0;
4528 }
4529
qeth_query_oat_command(struct qeth_card * card,char __user * udata)4530 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4531 {
4532 int rc = 0;
4533 struct qeth_cmd_buffer *iob;
4534 struct qeth_ipa_cmd *cmd;
4535 struct qeth_query_oat *oat_req;
4536 struct qeth_query_oat_data oat_data;
4537 struct qeth_qoat_priv priv;
4538 void __user *tmp;
4539
4540 QETH_CARD_TEXT(card, 3, "qoatcmd");
4541
4542 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4543 rc = -EOPNOTSUPP;
4544 goto out;
4545 }
4546
4547 if (copy_from_user(&oat_data, udata,
4548 sizeof(struct qeth_query_oat_data))) {
4549 rc = -EFAULT;
4550 goto out;
4551 }
4552
4553 priv.buffer_len = oat_data.buffer_len;
4554 priv.response_len = 0;
4555 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL);
4556 if (!priv.buffer) {
4557 rc = -ENOMEM;
4558 goto out;
4559 }
4560
4561 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4562 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4563 sizeof(struct qeth_query_oat));
4564 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4565 oat_req = &cmd->data.setadapterparms.data.query_oat;
4566 oat_req->subcmd_code = oat_data.command;
4567
4568 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4569 &priv);
4570 if (!rc) {
4571 if (is_compat_task())
4572 tmp = compat_ptr(oat_data.ptr);
4573 else
4574 tmp = (void __user *)(unsigned long)oat_data.ptr;
4575
4576 if (copy_to_user(tmp, priv.buffer,
4577 priv.response_len)) {
4578 rc = -EFAULT;
4579 goto out_free;
4580 }
4581
4582 oat_data.response_len = priv.response_len;
4583
4584 if (copy_to_user(udata, &oat_data,
4585 sizeof(struct qeth_query_oat_data)))
4586 rc = -EFAULT;
4587 } else
4588 if (rc == IPA_RC_FFFF)
4589 rc = -EFAULT;
4590
4591 out_free:
4592 kfree(priv.buffer);
4593 out:
4594 return rc;
4595 }
4596 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4597
qeth_get_qdio_q_format(struct qeth_card * card)4598 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4599 {
4600 switch (card->info.type) {
4601 case QETH_CARD_TYPE_IQD:
4602 return 2;
4603 default:
4604 return 0;
4605 }
4606 }
4607
qeth_determine_capabilities(struct qeth_card * card)4608 static void qeth_determine_capabilities(struct qeth_card *card)
4609 {
4610 int rc;
4611 int length;
4612 char *prcd;
4613 struct ccw_device *ddev;
4614 int ddev_offline = 0;
4615
4616 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4617 ddev = CARD_DDEV(card);
4618 if (!ddev->online) {
4619 ddev_offline = 1;
4620 rc = ccw_device_set_online(ddev);
4621 if (rc) {
4622 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4623 goto out;
4624 }
4625 }
4626
4627 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4628 if (rc) {
4629 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4630 dev_name(&card->gdev->dev), rc);
4631 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4632 goto out_offline;
4633 }
4634 qeth_configure_unitaddr(card, prcd);
4635 if (ddev_offline)
4636 qeth_configure_blkt_default(card, prcd);
4637 kfree(prcd);
4638
4639 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4640 if (rc)
4641 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4642
4643 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4644 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4645 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4646 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4647 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4648 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4649 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4650 dev_info(&card->gdev->dev,
4651 "Completion Queueing supported\n");
4652 } else {
4653 card->options.cq = QETH_CQ_NOTAVAILABLE;
4654 }
4655
4656
4657 out_offline:
4658 if (ddev_offline == 1)
4659 ccw_device_set_offline(ddev);
4660 out:
4661 return;
4662 }
4663
qeth_qdio_establish_cq(struct qeth_card * card,struct qdio_buffer ** in_sbal_ptrs,void (** queue_start_poll)(struct ccw_device *,int,unsigned long))4664 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4665 struct qdio_buffer **in_sbal_ptrs,
4666 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4667 int i;
4668
4669 if (card->options.cq == QETH_CQ_ENABLED) {
4670 int offset = QDIO_MAX_BUFFERS_PER_Q *
4671 (card->qdio.no_in_queues - 1);
4672 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4673 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4674 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4675 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4676 }
4677
4678 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4679 }
4680 }
4681
qeth_qdio_establish(struct qeth_card * card)4682 static int qeth_qdio_establish(struct qeth_card *card)
4683 {
4684 struct qdio_initialize init_data;
4685 char *qib_param_field;
4686 struct qdio_buffer **in_sbal_ptrs;
4687 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4688 struct qdio_buffer **out_sbal_ptrs;
4689 int i, j, k;
4690 int rc = 0;
4691
4692 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4693
4694 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4695 GFP_KERNEL);
4696 if (!qib_param_field) {
4697 rc = -ENOMEM;
4698 goto out_free_nothing;
4699 }
4700
4701 qeth_create_qib_param_field(card, qib_param_field);
4702 qeth_create_qib_param_field_blkt(card, qib_param_field);
4703
4704 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4705 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4706 GFP_KERNEL);
4707 if (!in_sbal_ptrs) {
4708 rc = -ENOMEM;
4709 goto out_free_qib_param;
4710 }
4711 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4712 in_sbal_ptrs[i] = (struct qdio_buffer *)
4713 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4714 }
4715
4716 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4717 GFP_KERNEL);
4718 if (!queue_start_poll) {
4719 rc = -ENOMEM;
4720 goto out_free_in_sbals;
4721 }
4722 for (i = 0; i < card->qdio.no_in_queues; ++i)
4723 queue_start_poll[i] = card->discipline->start_poll;
4724
4725 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4726
4727 out_sbal_ptrs =
4728 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4729 sizeof(void *), GFP_KERNEL);
4730 if (!out_sbal_ptrs) {
4731 rc = -ENOMEM;
4732 goto out_free_queue_start_poll;
4733 }
4734 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4735 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4736 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4737 card->qdio.out_qs[i]->bufs[j]->buffer);
4738 }
4739
4740 memset(&init_data, 0, sizeof(struct qdio_initialize));
4741 init_data.cdev = CARD_DDEV(card);
4742 init_data.q_format = qeth_get_qdio_q_format(card);
4743 init_data.qib_param_field_format = 0;
4744 init_data.qib_param_field = qib_param_field;
4745 init_data.no_input_qs = card->qdio.no_in_queues;
4746 init_data.no_output_qs = card->qdio.no_out_queues;
4747 init_data.input_handler = card->discipline->input_handler;
4748 init_data.output_handler = card->discipline->output_handler;
4749 init_data.queue_start_poll_array = queue_start_poll;
4750 init_data.int_parm = (unsigned long) card;
4751 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
4752 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4753 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4754 init_data.scan_threshold =
4755 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4756
4757 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4758 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4759 rc = qdio_allocate(&init_data);
4760 if (rc) {
4761 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4762 goto out;
4763 }
4764 rc = qdio_establish(&init_data);
4765 if (rc) {
4766 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4767 qdio_free(CARD_DDEV(card));
4768 }
4769 }
4770
4771 switch (card->options.cq) {
4772 case QETH_CQ_ENABLED:
4773 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4774 break;
4775 case QETH_CQ_DISABLED:
4776 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4777 break;
4778 default:
4779 break;
4780 }
4781 out:
4782 kfree(out_sbal_ptrs);
4783 out_free_queue_start_poll:
4784 kfree(queue_start_poll);
4785 out_free_in_sbals:
4786 kfree(in_sbal_ptrs);
4787 out_free_qib_param:
4788 kfree(qib_param_field);
4789 out_free_nothing:
4790 return rc;
4791 }
4792
qeth_core_free_card(struct qeth_card * card)4793 static void qeth_core_free_card(struct qeth_card *card)
4794 {
4795
4796 QETH_DBF_TEXT(SETUP, 2, "freecrd");
4797 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4798 qeth_clean_channel(&card->read);
4799 qeth_clean_channel(&card->write);
4800 if (card->dev)
4801 free_netdev(card->dev);
4802 kfree(card->ip_tbd_list);
4803 qeth_free_qdio_buffers(card);
4804 unregister_service_level(&card->qeth_service_level);
4805 kfree(card);
4806 }
4807
qeth_trace_features(struct qeth_card * card)4808 void qeth_trace_features(struct qeth_card *card)
4809 {
4810 QETH_CARD_TEXT(card, 2, "features");
4811 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
4812 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
4813 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
4814 QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
4815 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
4816 QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
4817 QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
4818 }
4819 EXPORT_SYMBOL_GPL(qeth_trace_features);
4820
4821 static struct ccw_device_id qeth_ids[] = {
4822 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4823 .driver_info = QETH_CARD_TYPE_OSD},
4824 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4825 .driver_info = QETH_CARD_TYPE_IQD},
4826 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4827 .driver_info = QETH_CARD_TYPE_OSN},
4828 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4829 .driver_info = QETH_CARD_TYPE_OSM},
4830 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4831 .driver_info = QETH_CARD_TYPE_OSX},
4832 {},
4833 };
4834 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4835
4836 static struct ccw_driver qeth_ccw_driver = {
4837 .driver = {
4838 .owner = THIS_MODULE,
4839 .name = "qeth",
4840 },
4841 .ids = qeth_ids,
4842 .probe = ccwgroup_probe_ccwdev,
4843 .remove = ccwgroup_remove_ccwdev,
4844 };
4845
qeth_core_hardsetup_card(struct qeth_card * card)4846 int qeth_core_hardsetup_card(struct qeth_card *card)
4847 {
4848 int retries = 3;
4849 int rc;
4850
4851 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
4852 atomic_set(&card->force_alloc_skb, 0);
4853 qeth_update_from_chp_desc(card);
4854 retry:
4855 if (retries < 3)
4856 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
4857 dev_name(&card->gdev->dev));
4858 ccw_device_set_offline(CARD_DDEV(card));
4859 ccw_device_set_offline(CARD_WDEV(card));
4860 ccw_device_set_offline(CARD_RDEV(card));
4861 rc = ccw_device_set_online(CARD_RDEV(card));
4862 if (rc)
4863 goto retriable;
4864 rc = ccw_device_set_online(CARD_WDEV(card));
4865 if (rc)
4866 goto retriable;
4867 rc = ccw_device_set_online(CARD_DDEV(card));
4868 if (rc)
4869 goto retriable;
4870 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4871 retriable:
4872 if (rc == -ERESTARTSYS) {
4873 QETH_DBF_TEXT(SETUP, 2, "break1");
4874 return rc;
4875 } else if (rc) {
4876 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4877 if (--retries < 0)
4878 goto out;
4879 else
4880 goto retry;
4881 }
4882 qeth_determine_capabilities(card);
4883 qeth_init_tokens(card);
4884 qeth_init_func_level(card);
4885 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
4886 if (rc == -ERESTARTSYS) {
4887 QETH_DBF_TEXT(SETUP, 2, "break2");
4888 return rc;
4889 } else if (rc) {
4890 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4891 if (--retries < 0)
4892 goto out;
4893 else
4894 goto retry;
4895 }
4896 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
4897 if (rc == -ERESTARTSYS) {
4898 QETH_DBF_TEXT(SETUP, 2, "break3");
4899 return rc;
4900 } else if (rc) {
4901 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
4902 if (--retries < 0)
4903 goto out;
4904 else
4905 goto retry;
4906 }
4907 card->read_or_write_problem = 0;
4908 rc = qeth_mpc_initialize(card);
4909 if (rc) {
4910 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4911 goto out;
4912 }
4913
4914 card->options.ipa4.supported_funcs = 0;
4915 card->options.adp.supported_funcs = 0;
4916 card->info.diagass_support = 0;
4917 qeth_query_ipassists(card, QETH_PROT_IPV4);
4918 if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
4919 qeth_query_setadapterparms(card);
4920 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
4921 qeth_query_setdiagass(card);
4922 return 0;
4923 out:
4924 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4925 "an error on the device\n");
4926 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
4927 dev_name(&card->gdev->dev), rc);
4928 return rc;
4929 }
4930 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4931
qeth_create_skb_frag(struct qeth_qdio_buffer * qethbuffer,struct qdio_buffer_element * element,struct sk_buff ** pskb,int offset,int * pfrag,int data_len)4932 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
4933 struct qdio_buffer_element *element,
4934 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
4935 {
4936 struct page *page = virt_to_page(element->addr);
4937 if (*pskb == NULL) {
4938 if (qethbuffer->rx_skb) {
4939 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
4940 *pskb = qethbuffer->rx_skb;
4941 qethbuffer->rx_skb = NULL;
4942 } else {
4943 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
4944 if (!(*pskb))
4945 return -ENOMEM;
4946 }
4947
4948 skb_reserve(*pskb, ETH_HLEN);
4949 if (data_len <= QETH_RX_PULL_LEN) {
4950 memcpy(skb_put(*pskb, data_len), element->addr + offset,
4951 data_len);
4952 } else {
4953 get_page(page);
4954 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
4955 element->addr + offset, QETH_RX_PULL_LEN);
4956 skb_fill_page_desc(*pskb, *pfrag, page,
4957 offset + QETH_RX_PULL_LEN,
4958 data_len - QETH_RX_PULL_LEN);
4959 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
4960 (*pskb)->len += data_len - QETH_RX_PULL_LEN;
4961 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
4962 (*pfrag)++;
4963 }
4964 } else {
4965 get_page(page);
4966 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
4967 (*pskb)->data_len += data_len;
4968 (*pskb)->len += data_len;
4969 (*pskb)->truesize += data_len;
4970 (*pfrag)++;
4971 }
4972
4973
4974 return 0;
4975 }
4976
qeth_core_get_next_skb(struct qeth_card * card,struct qeth_qdio_buffer * qethbuffer,struct qdio_buffer_element ** __element,int * __offset,struct qeth_hdr ** hdr)4977 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4978 struct qeth_qdio_buffer *qethbuffer,
4979 struct qdio_buffer_element **__element, int *__offset,
4980 struct qeth_hdr **hdr)
4981 {
4982 struct qdio_buffer_element *element = *__element;
4983 struct qdio_buffer *buffer = qethbuffer->buffer;
4984 int offset = *__offset;
4985 struct sk_buff *skb = NULL;
4986 int skb_len = 0;
4987 void *data_ptr;
4988 int data_len;
4989 int headroom = 0;
4990 int use_rx_sg = 0;
4991 int frag = 0;
4992
4993 /* qeth_hdr must not cross element boundaries */
4994 if (element->length < offset + sizeof(struct qeth_hdr)) {
4995 if (qeth_is_last_sbale(element))
4996 return NULL;
4997 element++;
4998 offset = 0;
4999 if (element->length < sizeof(struct qeth_hdr))
5000 return NULL;
5001 }
5002 *hdr = element->addr + offset;
5003
5004 offset += sizeof(struct qeth_hdr);
5005 switch ((*hdr)->hdr.l2.id) {
5006 case QETH_HEADER_TYPE_LAYER2:
5007 skb_len = (*hdr)->hdr.l2.pkt_length;
5008 break;
5009 case QETH_HEADER_TYPE_LAYER3:
5010 skb_len = (*hdr)->hdr.l3.length;
5011 headroom = ETH_HLEN;
5012 break;
5013 case QETH_HEADER_TYPE_OSN:
5014 skb_len = (*hdr)->hdr.osn.pdu_length;
5015 headroom = sizeof(struct qeth_hdr);
5016 break;
5017 default:
5018 break;
5019 }
5020
5021 if (!skb_len)
5022 return NULL;
5023
5024 if (((skb_len >= card->options.rx_sg_cb) &&
5025 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5026 (!atomic_read(&card->force_alloc_skb))) ||
5027 (card->options.cq == QETH_CQ_ENABLED)) {
5028 use_rx_sg = 1;
5029 } else {
5030 skb = dev_alloc_skb(skb_len + headroom);
5031 if (!skb)
5032 goto no_mem;
5033 if (headroom)
5034 skb_reserve(skb, headroom);
5035 }
5036
5037 data_ptr = element->addr + offset;
5038 while (skb_len) {
5039 data_len = min(skb_len, (int)(element->length - offset));
5040 if (data_len) {
5041 if (use_rx_sg) {
5042 if (qeth_create_skb_frag(qethbuffer, element,
5043 &skb, offset, &frag, data_len))
5044 goto no_mem;
5045 } else {
5046 memcpy(skb_put(skb, data_len), data_ptr,
5047 data_len);
5048 }
5049 }
5050 skb_len -= data_len;
5051 if (skb_len) {
5052 if (qeth_is_last_sbale(element)) {
5053 QETH_CARD_TEXT(card, 4, "unexeob");
5054 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5055 dev_kfree_skb_any(skb);
5056 card->stats.rx_errors++;
5057 return NULL;
5058 }
5059 element++;
5060 offset = 0;
5061 data_ptr = element->addr;
5062 } else {
5063 offset += data_len;
5064 }
5065 }
5066 *__element = element;
5067 *__offset = offset;
5068 if (use_rx_sg && card->options.performance_stats) {
5069 card->perf_stats.sg_skbs_rx++;
5070 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5071 }
5072 return skb;
5073 no_mem:
5074 if (net_ratelimit()) {
5075 QETH_CARD_TEXT(card, 2, "noskbmem");
5076 }
5077 card->stats.rx_dropped++;
5078 return NULL;
5079 }
5080 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5081
qeth_unregister_dbf_views(void)5082 static void qeth_unregister_dbf_views(void)
5083 {
5084 int x;
5085 for (x = 0; x < QETH_DBF_INFOS; x++) {
5086 debug_unregister(qeth_dbf[x].id);
5087 qeth_dbf[x].id = NULL;
5088 }
5089 }
5090
qeth_dbf_longtext(debug_info_t * id,int level,char * fmt,...)5091 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5092 {
5093 char dbf_txt_buf[32];
5094 va_list args;
5095
5096 if (level > id->level)
5097 return;
5098 va_start(args, fmt);
5099 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5100 va_end(args);
5101 debug_text_event(id, level, dbf_txt_buf);
5102 }
5103 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5104
qeth_register_dbf_views(void)5105 static int qeth_register_dbf_views(void)
5106 {
5107 int ret;
5108 int x;
5109
5110 for (x = 0; x < QETH_DBF_INFOS; x++) {
5111 /* register the areas */
5112 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5113 qeth_dbf[x].pages,
5114 qeth_dbf[x].areas,
5115 qeth_dbf[x].len);
5116 if (qeth_dbf[x].id == NULL) {
5117 qeth_unregister_dbf_views();
5118 return -ENOMEM;
5119 }
5120
5121 /* register a view */
5122 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5123 if (ret) {
5124 qeth_unregister_dbf_views();
5125 return ret;
5126 }
5127
5128 /* set a passing level */
5129 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5130 }
5131
5132 return 0;
5133 }
5134
qeth_core_load_discipline(struct qeth_card * card,enum qeth_discipline_id discipline)5135 int qeth_core_load_discipline(struct qeth_card *card,
5136 enum qeth_discipline_id discipline)
5137 {
5138 int rc = 0;
5139 mutex_lock(&qeth_mod_mutex);
5140 switch (discipline) {
5141 case QETH_DISCIPLINE_LAYER3:
5142 card->discipline = try_then_request_module(
5143 symbol_get(qeth_l3_discipline), "qeth_l3");
5144 break;
5145 case QETH_DISCIPLINE_LAYER2:
5146 card->discipline = try_then_request_module(
5147 symbol_get(qeth_l2_discipline), "qeth_l2");
5148 break;
5149 }
5150 if (!card->discipline) {
5151 dev_err(&card->gdev->dev, "There is no kernel module to "
5152 "support discipline %d\n", discipline);
5153 rc = -EINVAL;
5154 }
5155 mutex_unlock(&qeth_mod_mutex);
5156 return rc;
5157 }
5158
qeth_core_free_discipline(struct qeth_card * card)5159 void qeth_core_free_discipline(struct qeth_card *card)
5160 {
5161 if (card->options.layer2)
5162 symbol_put(qeth_l2_discipline);
5163 else
5164 symbol_put(qeth_l3_discipline);
5165 card->discipline = NULL;
5166 }
5167
5168 static const struct device_type qeth_generic_devtype = {
5169 .name = "qeth_generic",
5170 .groups = qeth_generic_attr_groups,
5171 };
5172 static const struct device_type qeth_osn_devtype = {
5173 .name = "qeth_osn",
5174 .groups = qeth_osn_attr_groups,
5175 };
5176
5177 #define DBF_NAME_LEN 20
5178
5179 struct qeth_dbf_entry {
5180 char dbf_name[DBF_NAME_LEN];
5181 debug_info_t *dbf_info;
5182 struct list_head dbf_list;
5183 };
5184
5185 static LIST_HEAD(qeth_dbf_list);
5186 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5187
qeth_get_dbf_entry(char * name)5188 static debug_info_t *qeth_get_dbf_entry(char *name)
5189 {
5190 struct qeth_dbf_entry *entry;
5191 debug_info_t *rc = NULL;
5192
5193 mutex_lock(&qeth_dbf_list_mutex);
5194 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5195 if (strcmp(entry->dbf_name, name) == 0) {
5196 rc = entry->dbf_info;
5197 break;
5198 }
5199 }
5200 mutex_unlock(&qeth_dbf_list_mutex);
5201 return rc;
5202 }
5203
qeth_add_dbf_entry(struct qeth_card * card,char * name)5204 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5205 {
5206 struct qeth_dbf_entry *new_entry;
5207
5208 card->debug = debug_register(name, 2, 1, 8);
5209 if (!card->debug) {
5210 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5211 goto err;
5212 }
5213 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5214 goto err_dbg;
5215 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5216 if (!new_entry)
5217 goto err_dbg;
5218 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5219 new_entry->dbf_info = card->debug;
5220 mutex_lock(&qeth_dbf_list_mutex);
5221 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5222 mutex_unlock(&qeth_dbf_list_mutex);
5223
5224 return 0;
5225
5226 err_dbg:
5227 debug_unregister(card->debug);
5228 err:
5229 return -ENOMEM;
5230 }
5231
qeth_clear_dbf_list(void)5232 static void qeth_clear_dbf_list(void)
5233 {
5234 struct qeth_dbf_entry *entry, *tmp;
5235
5236 mutex_lock(&qeth_dbf_list_mutex);
5237 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5238 list_del(&entry->dbf_list);
5239 debug_unregister(entry->dbf_info);
5240 kfree(entry);
5241 }
5242 mutex_unlock(&qeth_dbf_list_mutex);
5243 }
5244
qeth_core_probe_device(struct ccwgroup_device * gdev)5245 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5246 {
5247 struct qeth_card *card;
5248 struct device *dev;
5249 int rc;
5250 unsigned long flags;
5251 char dbf_name[DBF_NAME_LEN];
5252
5253 QETH_DBF_TEXT(SETUP, 2, "probedev");
5254
5255 dev = &gdev->dev;
5256 if (!get_device(dev))
5257 return -ENODEV;
5258
5259 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5260
5261 card = qeth_alloc_card();
5262 if (!card) {
5263 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5264 rc = -ENOMEM;
5265 goto err_dev;
5266 }
5267
5268 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5269 dev_name(&gdev->dev));
5270 card->debug = qeth_get_dbf_entry(dbf_name);
5271 if (!card->debug) {
5272 rc = qeth_add_dbf_entry(card, dbf_name);
5273 if (rc)
5274 goto err_card;
5275 }
5276
5277 card->read.ccwdev = gdev->cdev[0];
5278 card->write.ccwdev = gdev->cdev[1];
5279 card->data.ccwdev = gdev->cdev[2];
5280 dev_set_drvdata(&gdev->dev, card);
5281 card->gdev = gdev;
5282 gdev->cdev[0]->handler = qeth_irq;
5283 gdev->cdev[1]->handler = qeth_irq;
5284 gdev->cdev[2]->handler = qeth_irq;
5285
5286 rc = qeth_determine_card_type(card);
5287 if (rc) {
5288 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5289 goto err_card;
5290 }
5291 rc = qeth_setup_card(card);
5292 if (rc) {
5293 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5294 goto err_card;
5295 }
5296
5297 if (card->info.type == QETH_CARD_TYPE_OSN)
5298 gdev->dev.type = &qeth_osn_devtype;
5299 else
5300 gdev->dev.type = &qeth_generic_devtype;
5301
5302 switch (card->info.type) {
5303 case QETH_CARD_TYPE_OSN:
5304 case QETH_CARD_TYPE_OSM:
5305 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5306 if (rc)
5307 goto err_card;
5308 rc = card->discipline->setup(card->gdev);
5309 if (rc)
5310 goto err_disc;
5311 case QETH_CARD_TYPE_OSD:
5312 case QETH_CARD_TYPE_OSX:
5313 default:
5314 break;
5315 }
5316
5317 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5318 list_add_tail(&card->list, &qeth_core_card_list.list);
5319 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5320
5321 qeth_determine_capabilities(card);
5322 return 0;
5323
5324 err_disc:
5325 qeth_core_free_discipline(card);
5326 err_card:
5327 qeth_core_free_card(card);
5328 err_dev:
5329 put_device(dev);
5330 return rc;
5331 }
5332
qeth_core_remove_device(struct ccwgroup_device * gdev)5333 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5334 {
5335 unsigned long flags;
5336 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5337
5338 QETH_DBF_TEXT(SETUP, 2, "removedv");
5339
5340 if (card->discipline) {
5341 card->discipline->remove(gdev);
5342 qeth_core_free_discipline(card);
5343 }
5344
5345 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5346 list_del(&card->list);
5347 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5348 qeth_core_free_card(card);
5349 dev_set_drvdata(&gdev->dev, NULL);
5350 put_device(&gdev->dev);
5351 return;
5352 }
5353
qeth_core_set_online(struct ccwgroup_device * gdev)5354 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5355 {
5356 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5357 int rc = 0;
5358 int def_discipline;
5359
5360 if (!card->discipline) {
5361 if (card->info.type == QETH_CARD_TYPE_IQD)
5362 def_discipline = QETH_DISCIPLINE_LAYER3;
5363 else
5364 def_discipline = QETH_DISCIPLINE_LAYER2;
5365 rc = qeth_core_load_discipline(card, def_discipline);
5366 if (rc)
5367 goto err;
5368 rc = card->discipline->setup(card->gdev);
5369 if (rc)
5370 goto err;
5371 }
5372 rc = card->discipline->set_online(gdev);
5373 err:
5374 return rc;
5375 }
5376
qeth_core_set_offline(struct ccwgroup_device * gdev)5377 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5378 {
5379 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5380 return card->discipline->set_offline(gdev);
5381 }
5382
qeth_core_shutdown(struct ccwgroup_device * gdev)5383 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5384 {
5385 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5386 if (card->discipline && card->discipline->shutdown)
5387 card->discipline->shutdown(gdev);
5388 }
5389
qeth_core_prepare(struct ccwgroup_device * gdev)5390 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5391 {
5392 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5393 if (card->discipline && card->discipline->prepare)
5394 return card->discipline->prepare(gdev);
5395 return 0;
5396 }
5397
qeth_core_complete(struct ccwgroup_device * gdev)5398 static void qeth_core_complete(struct ccwgroup_device *gdev)
5399 {
5400 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5401 if (card->discipline && card->discipline->complete)
5402 card->discipline->complete(gdev);
5403 }
5404
qeth_core_freeze(struct ccwgroup_device * gdev)5405 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5406 {
5407 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5408 if (card->discipline && card->discipline->freeze)
5409 return card->discipline->freeze(gdev);
5410 return 0;
5411 }
5412
qeth_core_thaw(struct ccwgroup_device * gdev)5413 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5414 {
5415 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5416 if (card->discipline && card->discipline->thaw)
5417 return card->discipline->thaw(gdev);
5418 return 0;
5419 }
5420
qeth_core_restore(struct ccwgroup_device * gdev)5421 static int qeth_core_restore(struct ccwgroup_device *gdev)
5422 {
5423 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5424 if (card->discipline && card->discipline->restore)
5425 return card->discipline->restore(gdev);
5426 return 0;
5427 }
5428
5429 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5430 .driver = {
5431 .owner = THIS_MODULE,
5432 .name = "qeth",
5433 },
5434 .setup = qeth_core_probe_device,
5435 .remove = qeth_core_remove_device,
5436 .set_online = qeth_core_set_online,
5437 .set_offline = qeth_core_set_offline,
5438 .shutdown = qeth_core_shutdown,
5439 .prepare = qeth_core_prepare,
5440 .complete = qeth_core_complete,
5441 .freeze = qeth_core_freeze,
5442 .thaw = qeth_core_thaw,
5443 .restore = qeth_core_restore,
5444 };
5445
qeth_core_driver_group_store(struct device_driver * ddrv,const char * buf,size_t count)5446 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5447 const char *buf, size_t count)
5448 {
5449 int err;
5450
5451 err = ccwgroup_create_dev(qeth_core_root_dev,
5452 &qeth_core_ccwgroup_driver, 3, buf);
5453
5454 return err ? err : count;
5455 }
5456 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5457
5458 static struct attribute *qeth_drv_attrs[] = {
5459 &driver_attr_group.attr,
5460 NULL,
5461 };
5462 static struct attribute_group qeth_drv_attr_group = {
5463 .attrs = qeth_drv_attrs,
5464 };
5465 static const struct attribute_group *qeth_drv_attr_groups[] = {
5466 &qeth_drv_attr_group,
5467 NULL,
5468 };
5469
5470 static struct {
5471 const char str[ETH_GSTRING_LEN];
5472 } qeth_ethtool_stats_keys[] = {
5473 /* 0 */{"rx skbs"},
5474 {"rx buffers"},
5475 {"tx skbs"},
5476 {"tx buffers"},
5477 {"tx skbs no packing"},
5478 {"tx buffers no packing"},
5479 {"tx skbs packing"},
5480 {"tx buffers packing"},
5481 {"tx sg skbs"},
5482 {"tx sg frags"},
5483 /* 10 */{"rx sg skbs"},
5484 {"rx sg frags"},
5485 {"rx sg page allocs"},
5486 {"tx large kbytes"},
5487 {"tx large count"},
5488 {"tx pk state ch n->p"},
5489 {"tx pk state ch p->n"},
5490 {"tx pk watermark low"},
5491 {"tx pk watermark high"},
5492 {"queue 0 buffer usage"},
5493 /* 20 */{"queue 1 buffer usage"},
5494 {"queue 2 buffer usage"},
5495 {"queue 3 buffer usage"},
5496 {"rx poll time"},
5497 {"rx poll count"},
5498 {"rx do_QDIO time"},
5499 {"rx do_QDIO count"},
5500 {"tx handler time"},
5501 {"tx handler count"},
5502 {"tx time"},
5503 /* 30 */{"tx count"},
5504 {"tx do_QDIO time"},
5505 {"tx do_QDIO count"},
5506 {"tx csum"},
5507 {"tx lin"},
5508 {"cq handler count"},
5509 {"cq handler time"}
5510 };
5511
qeth_core_get_sset_count(struct net_device * dev,int stringset)5512 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5513 {
5514 switch (stringset) {
5515 case ETH_SS_STATS:
5516 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5517 default:
5518 return -EINVAL;
5519 }
5520 }
5521 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5522
qeth_core_get_ethtool_stats(struct net_device * dev,struct ethtool_stats * stats,u64 * data)5523 void qeth_core_get_ethtool_stats(struct net_device *dev,
5524 struct ethtool_stats *stats, u64 *data)
5525 {
5526 struct qeth_card *card = dev->ml_priv;
5527 data[0] = card->stats.rx_packets -
5528 card->perf_stats.initial_rx_packets;
5529 data[1] = card->perf_stats.bufs_rec;
5530 data[2] = card->stats.tx_packets -
5531 card->perf_stats.initial_tx_packets;
5532 data[3] = card->perf_stats.bufs_sent;
5533 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5534 - card->perf_stats.skbs_sent_pack;
5535 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5536 data[6] = card->perf_stats.skbs_sent_pack;
5537 data[7] = card->perf_stats.bufs_sent_pack;
5538 data[8] = card->perf_stats.sg_skbs_sent;
5539 data[9] = card->perf_stats.sg_frags_sent;
5540 data[10] = card->perf_stats.sg_skbs_rx;
5541 data[11] = card->perf_stats.sg_frags_rx;
5542 data[12] = card->perf_stats.sg_alloc_page_rx;
5543 data[13] = (card->perf_stats.large_send_bytes >> 10);
5544 data[14] = card->perf_stats.large_send_cnt;
5545 data[15] = card->perf_stats.sc_dp_p;
5546 data[16] = card->perf_stats.sc_p_dp;
5547 data[17] = QETH_LOW_WATERMARK_PACK;
5548 data[18] = QETH_HIGH_WATERMARK_PACK;
5549 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5550 data[20] = (card->qdio.no_out_queues > 1) ?
5551 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5552 data[21] = (card->qdio.no_out_queues > 2) ?
5553 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5554 data[22] = (card->qdio.no_out_queues > 3) ?
5555 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5556 data[23] = card->perf_stats.inbound_time;
5557 data[24] = card->perf_stats.inbound_cnt;
5558 data[25] = card->perf_stats.inbound_do_qdio_time;
5559 data[26] = card->perf_stats.inbound_do_qdio_cnt;
5560 data[27] = card->perf_stats.outbound_handler_time;
5561 data[28] = card->perf_stats.outbound_handler_cnt;
5562 data[29] = card->perf_stats.outbound_time;
5563 data[30] = card->perf_stats.outbound_cnt;
5564 data[31] = card->perf_stats.outbound_do_qdio_time;
5565 data[32] = card->perf_stats.outbound_do_qdio_cnt;
5566 data[33] = card->perf_stats.tx_csum;
5567 data[34] = card->perf_stats.tx_lin;
5568 data[35] = card->perf_stats.cq_cnt;
5569 data[36] = card->perf_stats.cq_time;
5570 }
5571 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5572
qeth_core_get_strings(struct net_device * dev,u32 stringset,u8 * data)5573 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5574 {
5575 switch (stringset) {
5576 case ETH_SS_STATS:
5577 memcpy(data, &qeth_ethtool_stats_keys,
5578 sizeof(qeth_ethtool_stats_keys));
5579 break;
5580 default:
5581 WARN_ON(1);
5582 break;
5583 }
5584 }
5585 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5586
qeth_core_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)5587 void qeth_core_get_drvinfo(struct net_device *dev,
5588 struct ethtool_drvinfo *info)
5589 {
5590 struct qeth_card *card = dev->ml_priv;
5591
5592 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5593 sizeof(info->driver));
5594 strlcpy(info->version, "1.0", sizeof(info->version));
5595 strlcpy(info->fw_version, card->info.mcl_level,
5596 sizeof(info->fw_version));
5597 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5598 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5599 }
5600 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5601
qeth_core_ethtool_get_settings(struct net_device * netdev,struct ethtool_cmd * ecmd)5602 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5603 struct ethtool_cmd *ecmd)
5604 {
5605 struct qeth_card *card = netdev->ml_priv;
5606 enum qeth_link_types link_type;
5607
5608 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5609 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5610 else
5611 link_type = card->info.link_type;
5612
5613 ecmd->transceiver = XCVR_INTERNAL;
5614 ecmd->supported = SUPPORTED_Autoneg;
5615 ecmd->advertising = ADVERTISED_Autoneg;
5616 ecmd->duplex = DUPLEX_FULL;
5617 ecmd->autoneg = AUTONEG_ENABLE;
5618
5619 switch (link_type) {
5620 case QETH_LINK_TYPE_FAST_ETH:
5621 case QETH_LINK_TYPE_LANE_ETH100:
5622 ecmd->supported |= SUPPORTED_10baseT_Half |
5623 SUPPORTED_10baseT_Full |
5624 SUPPORTED_100baseT_Half |
5625 SUPPORTED_100baseT_Full |
5626 SUPPORTED_TP;
5627 ecmd->advertising |= ADVERTISED_10baseT_Half |
5628 ADVERTISED_10baseT_Full |
5629 ADVERTISED_100baseT_Half |
5630 ADVERTISED_100baseT_Full |
5631 ADVERTISED_TP;
5632 ecmd->speed = SPEED_100;
5633 ecmd->port = PORT_TP;
5634 break;
5635
5636 case QETH_LINK_TYPE_GBIT_ETH:
5637 case QETH_LINK_TYPE_LANE_ETH1000:
5638 ecmd->supported |= SUPPORTED_10baseT_Half |
5639 SUPPORTED_10baseT_Full |
5640 SUPPORTED_100baseT_Half |
5641 SUPPORTED_100baseT_Full |
5642 SUPPORTED_1000baseT_Half |
5643 SUPPORTED_1000baseT_Full |
5644 SUPPORTED_FIBRE;
5645 ecmd->advertising |= ADVERTISED_10baseT_Half |
5646 ADVERTISED_10baseT_Full |
5647 ADVERTISED_100baseT_Half |
5648 ADVERTISED_100baseT_Full |
5649 ADVERTISED_1000baseT_Half |
5650 ADVERTISED_1000baseT_Full |
5651 ADVERTISED_FIBRE;
5652 ecmd->speed = SPEED_1000;
5653 ecmd->port = PORT_FIBRE;
5654 break;
5655
5656 case QETH_LINK_TYPE_10GBIT_ETH:
5657 ecmd->supported |= SUPPORTED_10baseT_Half |
5658 SUPPORTED_10baseT_Full |
5659 SUPPORTED_100baseT_Half |
5660 SUPPORTED_100baseT_Full |
5661 SUPPORTED_1000baseT_Half |
5662 SUPPORTED_1000baseT_Full |
5663 SUPPORTED_10000baseT_Full |
5664 SUPPORTED_FIBRE;
5665 ecmd->advertising |= ADVERTISED_10baseT_Half |
5666 ADVERTISED_10baseT_Full |
5667 ADVERTISED_100baseT_Half |
5668 ADVERTISED_100baseT_Full |
5669 ADVERTISED_1000baseT_Half |
5670 ADVERTISED_1000baseT_Full |
5671 ADVERTISED_10000baseT_Full |
5672 ADVERTISED_FIBRE;
5673 ecmd->speed = SPEED_10000;
5674 ecmd->port = PORT_FIBRE;
5675 break;
5676
5677 default:
5678 ecmd->supported |= SUPPORTED_10baseT_Half |
5679 SUPPORTED_10baseT_Full |
5680 SUPPORTED_TP;
5681 ecmd->advertising |= ADVERTISED_10baseT_Half |
5682 ADVERTISED_10baseT_Full |
5683 ADVERTISED_TP;
5684 ecmd->speed = SPEED_10;
5685 ecmd->port = PORT_TP;
5686 }
5687
5688 return 0;
5689 }
5690 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
5691
qeth_core_init(void)5692 static int __init qeth_core_init(void)
5693 {
5694 int rc;
5695
5696 pr_info("loading core functions\n");
5697 INIT_LIST_HEAD(&qeth_core_card_list.list);
5698 INIT_LIST_HEAD(&qeth_dbf_list);
5699 rwlock_init(&qeth_core_card_list.rwlock);
5700 mutex_init(&qeth_mod_mutex);
5701
5702 qeth_wq = create_singlethread_workqueue("qeth_wq");
5703
5704 rc = qeth_register_dbf_views();
5705 if (rc)
5706 goto out_err;
5707 qeth_core_root_dev = root_device_register("qeth");
5708 rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
5709 if (rc)
5710 goto register_err;
5711 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
5712 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
5713 if (!qeth_core_header_cache) {
5714 rc = -ENOMEM;
5715 goto slab_err;
5716 }
5717 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
5718 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
5719 if (!qeth_qdio_outbuf_cache) {
5720 rc = -ENOMEM;
5721 goto cqslab_err;
5722 }
5723 rc = ccw_driver_register(&qeth_ccw_driver);
5724 if (rc)
5725 goto ccw_err;
5726 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
5727 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
5728 if (rc)
5729 goto ccwgroup_err;
5730
5731 return 0;
5732
5733 ccwgroup_err:
5734 ccw_driver_unregister(&qeth_ccw_driver);
5735 ccw_err:
5736 kmem_cache_destroy(qeth_qdio_outbuf_cache);
5737 cqslab_err:
5738 kmem_cache_destroy(qeth_core_header_cache);
5739 slab_err:
5740 root_device_unregister(qeth_core_root_dev);
5741 register_err:
5742 qeth_unregister_dbf_views();
5743 out_err:
5744 pr_err("Initializing the qeth device driver failed\n");
5745 return rc;
5746 }
5747
qeth_core_exit(void)5748 static void __exit qeth_core_exit(void)
5749 {
5750 qeth_clear_dbf_list();
5751 destroy_workqueue(qeth_wq);
5752 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
5753 ccw_driver_unregister(&qeth_ccw_driver);
5754 kmem_cache_destroy(qeth_qdio_outbuf_cache);
5755 kmem_cache_destroy(qeth_core_header_cache);
5756 root_device_unregister(qeth_core_root_dev);
5757 qeth_unregister_dbf_views();
5758 pr_info("core functions removed\n");
5759 }
5760
5761 module_init(qeth_core_init);
5762 module_exit(qeth_core_exit);
5763 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
5764 MODULE_DESCRIPTION("qeth core functions");
5765 MODULE_LICENSE("GPL");
5766